/* ============================================
   Study Facil - Modern Design System
   ============================================ */

:root {
    /* Superfícies e texto: neutros quentes (papel e tinta), sem tons azulados */
    --bg-primary: #151412;
    --bg-secondary: #1d1c19;
    --bg-tertiary: #262521;
    --bg-elevated: #2e2c28;
    --text-primary: #ece8e0;
    --text-secondary: #a8a298;
    --text-tertiary: #7d786f;
    --border-color: #302e2a;
    --border-light: #403d38;

    /* Cor de marca: um violeta só, sempre liso (sem gradientes nem brilhos) */
    --accent-primary: #9184ea;
    --accent-secondary: #aaa0f0;
    --accent-solid: #6f5fd0;          /* fundo de botões (contraste com texto branco) */
    --accent-solid-hover: #6154bd;
    --on-accent: #ffffff;
    --accent-soft: rgba(145, 132, 234, 0.12);
    --accent-gradient: var(--accent-solid);   /* compatibilidade: já não há gradientes */
    /* Aliases usadas nas páginas legadas */
    --accent-color: #9184ea;
    --accent-light: #aaa0f0;
    --success-color: #10b981;
    --danger-color:  #ef4444;

    /* Semantic Colors */
    --success: #10b981;
    --success-light: #34d399;
    --danger: #ef4444;
    --danger-light: #f87171;
    --warning: #f59e0b;
    --warning-light: #fbbf24;
    --info: #3b82f6;
    --info-light: #60a5fa;
    /* Legacy aliases */
    --info-color:    #3b82f6;
    --success-color: #10b981;
    --danger-color:  #ef4444;
    --warning-color: #f59e0b;

    /* Spacing System */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border Radius: cantos discretos */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 10px;
    --radius-2xl: 12px;
    --radius-full: 9999px;

    /* Shadows: sombras curtas e neutras */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.18);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.22);
    --shadow-xl: 0 8px 28px rgba(0, 0, 0, 0.28);
    --shadow-accent: 0 1px 3px rgba(0, 0, 0, 0.25);

    /* Transitions */
    --transition-fast: all 0.12s ease;
    --transition: all 0.18s ease;
    --transition-slow: all 0.3s ease;

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;

    /* Z-index layers */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-popover: 500;
    --z-tooltip: 600;
}

/* Light Theme */
body.light-theme {
    --bg-primary: #f4f0e8;
    --bg-secondary: #fbf9f5;
    --bg-tertiary: #ece7dc;
    --bg-elevated: #ffffff;
    --text-primary: #1f1c17;
    --text-secondary: #5c564b;
    --text-tertiary: #8a8377;
    --border-color: #d8d1c2;
    --border-light: #c9c1af;
    --accent-primary: #5a4bb8;
    --accent-secondary: #6f5fd0;
    --accent-solid: #5a4bb8;
    --accent-solid-hover: #4d3fa3;
    --accent-soft: rgba(90, 75, 184, 0.10);
    /* Aliases — versão escura para contraste em fundo claro */
    --accent-color:  #5a4bb8;
    --accent-light:  #6f5fd0;
    --info-color:    #1d4ed8;
    --success-color: #047857;
    --danger-color:  #dc2626;
    --warning-color: #b45309;

    --shadow-sm: 0 1px 2px rgba(60, 50, 30, 0.08);
    --shadow-md: 0 2px 8px rgba(60, 50, 30, 0.10);
    --shadow-lg: 0 4px 16px rgba(60, 50, 30, 0.12);
    --shadow-xl: 0 8px 28px rgba(60, 50, 30, 0.16);
}

/* ============================================
   Global Resets & Base Styles
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    scroll-behavior: smooth;
    -webkit-touch-callout: none;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    position: relative;
    min-height: 100vh;
    -webkit-user-select: none;
    user-select: none;
    -webkit-user-drag: none;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Allow text selection */
body * {
    -webkit-user-select: text;
    user-select: text;
}

input, textarea, select {
    -webkit-user-select: text !important;
    user-select: text !important;
}

/* ============================================
   Typography System
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

h1 {
    font-family: var(--font-serif);
    font-size: clamp(1.9rem, 4vw, 2.6rem);
    font-weight: 600;
    line-height: 1.15;
}

h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 600;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

h5 {
    font-size: 1.125rem;
}

h6 {
    font-size: 1rem;
    font-weight: 600;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    line-height: 1.7;
}

.text-gradient {
    color: var(--accent-primary);
}

.text-sm {
    font-size: 0.875rem;
}

.text-lg {
    font-size: 1.125rem;
}

.text-xl {
    font-size: 1.25rem;
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    color: var(--accent-secondary);
}

/* ============================================
   Header/Navigation
   ============================================ */

.header {
    width: 100%;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.header-container {
    max-width: 1280px;
    margin: 0 auto;
    height: 72px;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: var(--transition-fast);
}

.logo:hover {
    opacity: 0.8;
}

.logo-text {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    letter-spacing: -0.01em;
}

/* Header Right */
.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.actions, .header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* Plans Button */
.nav-plans, .btn-planos {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--accent-solid);
    color: var(--on-accent);
    border: none;
    border-radius: var(--radius-md);
    padding: 0.55rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.nav-plans:hover, .btn-planos:hover {
    background: var(--accent-solid-hover);
    color: var(--on-accent);
}

/* Avatar */
.user-avatar-dropdown .avatar-btn,
.avatar,
.avatar-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    object-fit: cover;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    padding: 0;
    cursor: pointer;
    transition: var(--transition-fast);
}

.avatar-btn:hover {
    border-color: var(--accent-primary);
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
}

.toggle-btn {
  width: 36px;
  height: 36px;
  background: #1f1f1f;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  cursor: pointer;
  transition: opacity 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toggle-btn:hover {
  opacity: 0.8;
}

.btn-theme {
  width: 36px;
  height: 36px;
  background: #1f1f1f;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  cursor: pointer;
}

/* MENU HAMBURGER */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: #fff;
  cursor: pointer;
}

.btn-menu {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: #fff;
  cursor: pointer;
}

/* NAV LINK ESTILOS */
.nav-link {
  color: var(--text-primary);
  transition: var(--transition);
}

/* DROPDOWN AVATAR */
.avatar-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  min-width: 200px;
  margin-top: var(--spacing-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition);
  z-index: 1000;
  display: none;
}

.avatar-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  display: block;
}

.dropdown-header {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.dropdown-username {
  display: block;
  font-weight: 600;
  margin-bottom: 4px;
}

.dropdown-role {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.dropdown-divider {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 0;
}

.dropdown-item {
  display: block;
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--text-primary);
  transition: var(--transition);
  text-decoration: none;
}

.dropdown-item:hover {
  background-color: var(--bg-tertiary);
  color: var(--accent-color);
}

.dropdown-item.dropdown-logout {
  color: var(--danger-color);
}

.dropdown-item.dropdown-logout:hover {
  background-color: rgba(214, 48, 49, 0.1);
}

.dropdown-icon {
  margin-right: 8px;
}

/* NAV */
.nav {
  display: none;
}

.nav-list {
  list-style: none;
}

/* AVATAR DROPDOWN */
.avatar-dropdown-wrapper {
  position: relative;
  display: inline-block;
}

.avatar-btn {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s;
}

.avatar-btn:hover {
  opacity: 0.85;
}

.avatar-btn .avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
}

/* Sem foto: inicial do nome, em cor lisa */
.avatar-btn .avatar--initial {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-solid);
  color: var(--on-accent);
  font-size: .95rem;
  font-weight: 600;
  border: 0;
}

.avatar-menu {
  position: absolute;
  top: 100%;
  right: 0;
  background: #1f1f1f;
  border: 1px solid #2a2a2a;
  border-radius: 8px;
  min-width: 160px;
  margin-top: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1000;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.avatar-menu.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.avatar-menu-item {
  display: block;
  padding: 12px 16px;
  color: #fff;
  text-decoration: none;
  transition: background 0.3s;
  font-size: 14px;
}

.avatar-menu-item:hover {
  background: #282828;
}

.avatar-menu-item:first-child {
  border-radius: 8px 8px 0 0;
}

.avatar-menu-divider {
  height: 1px;
  background: #2a2a2a;
  margin: 0;
}

.avatar-logout {
  border-radius: 0 0 8px 8px;
  color: #ff6b6b;
}

.avatar-logout:hover {
  background: rgba(255, 107, 107, 0.1);
}

/* THEME SUBMENU */
.avatar-theme-toggle {
  position: relative;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.theme-arrow {
  font-size: 18px;
  transition: transform 0.3s;
}

.theme-submenu {
  position: absolute;
    right: 100%;
    left: auto;
  top: 0;
  background: #1f1f1f;
  border: 1px solid #2a2a2a;
  border-radius: 8px;
  min-width: 140px;
    margin-right: 8px;
    margin-left: 0;
  opacity: 0;
  visibility: hidden;
    pointer-events: none;
    transform: translateX(10px);
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  z-index: 1001;
}

.theme-submenu.show {
  opacity: 1;
  visibility: visible;
    pointer-events: auto;
  transform: translateX(0);
}

.theme-option {
  display: block;
  padding: 12px 16px;
  color: #fff;
  text-decoration: none;
  transition: background 0.3s;
  font-size: 14px;
  white-space: nowrap;
}

.theme-option:hover {
  background: #282828;
}

.theme-option:first-child {
  border-radius: 8px 8px 0 0;
}

.theme-option:last-child {
  border-radius: 0 0 8px 8px;
}

/* LOGIN BUTTON */
.login-btn {
  padding: 10px 16px;
  background: #7b6df6;
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 14px;
  cursor: pointer;
  transition: opacity 0.3s;
}

.login-btn:hover {
  opacity: 0.9;
}

/* 📱 MOBILE */
@media (max-width: 768px) {
  .header-container {
    flex-direction: row;
    justify-content: space-between;
    height: 60px;
    padding: 0 12px;
    overflow: visible;
  }

  .logo {
    order: 1;
    flex: 0 0 auto;
  }

  .logo-text {
    font-size: 22px;
  }

  .actions {
    order: 2;
    justify-content: flex-end;
    gap: 8px;
  }

  .avatar-btn .avatar {
    width: 32px;
    height: 32px;
  }

  .btn-theme {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .btn-menu {
    display: none !important;
  }

  .menu-toggle {
    display: none !important;
  }

  .nav-plans,
  .btn-planos {
    display: none !important;
  }
}

/* ============================================
   Main Content
   ============================================ */

.main-content {
    flex: 1;
    min-height: calc(100vh - 120px);
    padding: var(--spacing-2xl) 0;
}

.container {
    width: 100%;
    margin: 0 auto;
    padding: 0 1rem;
    box-sizing: border-box;
}

/* Messages/Alerts */
.messages {
    margin-bottom: var(--spacing-xl);
}

.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid var(--info-color);
    background-color: var(--bg-tertiary);
}

.alert-error {
    border-left-color: var(--danger-color);
}

.alert-success {
    border-left-color: var(--success-color);
}

.alert-warning {
    border-left-color: var(--warning-color);
}

/* ============================================
   Dashboard
   ============================================ */

.dashboard-header {
    margin-bottom: var(--spacing-2xl);
}

.dashboard-header h2 {
    margin-bottom: var(--spacing-sm);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

/* Dashboard Cards */
.dashboard-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.dashboard-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-light));
}

.dashboard-card:hover {
    border-color: var(--accent-color);
    box-shadow: 0 8px 16px rgba(108, 92, 231, 0.2);
    transform: translateY(-2px);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.dashboard-card h3 {
    margin-bottom: var(--spacing-md);
}

.card-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: var(--spacing-sm);
}

.card-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-lg);
}

.card-link {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
    transition: var(--transition);
    font-weight: 500;
}

.card-link:hover {
    background-color: var(--accent-color);
    color: white;
    text-decoration: none;
}

.card-link.btn-primary {
    background-color: var(--accent-color);
    color: white;
}

.card-link.btn-primary:hover {
    background-color: var(--accent-light);
    color: white;
    text-decoration: none;
}

/* ============================================
   Recent Activities Section
   ============================================ */

.recent-section {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.recent-section h3 {
    margin-bottom: var(--spacing-lg);
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.activity-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-left: 3px solid var(--accent-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-tertiary);
}

.activity-icon {
    font-size: 1.5rem;
    min-width: 2rem;
}

.activity-content {
    flex: 1;
}

.activity-text {
    margin: 0;
    color: var(--text-primary);
}

.activity-time {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* ============================================
   Materials Section
   ============================================ */

.materials-header {
    margin-bottom: var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.materials-filter {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.filter-form {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.search-input,
.filter-select {
    flex: 1;
    min-width: 200px;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.search-input::placeholder {
    color: var(--text-secondary);
}

.search-input:focus,
.filter-select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.1);
}

.materials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

/* Material Cards */
.material-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.material-card:hover {
    border-color: var(--accent-color);
    box-shadow: 0 12px 24px rgba(108, 92, 231, 0.15);
    transform: translateY(-4px);
}

.card-header {
    padding: var(--spacing-lg);
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.material-title {
    margin: 0 0 var(--spacing-sm) 0;
    font-size: 1.3rem;
}

.material-institution {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--accent-color);
    color: white;
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: 500;
}

.card-body {
    padding: var(--spacing-lg);
    flex: 1;
}

.material-content {
    color: var(--text-secondary);
    line-height: 1.5;
}

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-tertiary);
}

.material-meta {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.meta-icon {
    font-size: 1rem;
}

.card-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.action-link {
    flex: 1;
    text-align: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--accent-color);
    transition: var(--transition);
    font-size: 0.9rem;
}

.action-link:hover {
    background-color: var(--accent-color);
    color: white;
    text-decoration: none;
    border-color: var(--accent-color);
}

.action-danger {
    color: var(--danger-color);
}

.action-danger:hover {
    background-color: var(--danger-color);
    border-color: var(--danger-color);
}

/* Material Preview (for teacher dashboard) */
.materials-preview {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.material-preview-item {
    padding: var(--spacing-lg);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    border-left: 3px solid var(--accent-color);
}

.material-preview-item h4 {
    margin-bottom: var(--spacing-sm);
}

.preview-content {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
}

.preview-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.preview-institution {
    background-color: var(--accent-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
}

/* ============================================
   Modern Button System
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.7rem 1.35rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    min-height: 44px;
    touch-action: manipulation;
    -webkit-user-select: none;
    user-select: none;
    text-decoration: none;
    position: relative;
}

.btn:active {
    transform: translateY(1px);
}

.btn:hover {
    background: var(--bg-elevated);
    border-color: var(--border-light);
}

/* Button Variants */
.btn-primary {
    background: var(--accent-solid);
    color: var(--on-accent);
    border: 1px solid transparent;
}

.btn-primary:hover {
    background: var(--accent-solid-hover);
    border-color: transparent;
    color: var(--on-accent);
}

.btn-secondary {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
}

.btn-secondary:hover {
    background: var(--bg-elevated);
    border-color: var(--accent-primary);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-light);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: var(--bg-tertiary);
    border-color: var(--text-tertiary);
    color: var(--text-primary);
}

.btn-danger {
    background: var(--danger);
    color: #ffffff;
    border: none;
}

.btn-danger:hover {
    background: var(--danger-light);
}

.btn-success {
    background: var(--success);
    color: #ffffff;
    border: none;
}

.btn-success:hover {
    background: var(--success-light);
}

/* Button Sizes */
.btn-sm, .btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    min-height: 36px;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
    min-height: 52px;
}

/* Button States */
.btn:disabled,
.btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.btn-block {
    width: 100%;
    display: flex;
}

/* ============================================
   Modern Card System
   ============================================ */

.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: var(--transition);
    position: relative;
}

.card:hover {
    border-color: var(--border-light);
}

.card-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.card-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.card-body {
    color: var(--text-secondary);
    line-height: 1.6;
}

.card-footer {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

/* Card Variants */
.card-elevated {
    box-shadow: var(--shadow-md);
}

.card-gradient {
    background: var(--accent-solid);
    border: none;
    color: var(--on-accent);
}

.card-gradient .card-title,
.card-gradient .card-body {
    color: #ffffff;
}

/* ============================================
   Modern Form System
   ============================================ */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.form-control,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="url"],
input[type="tel"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9375rem;
    transition: var(--transition-fast);
    font-family: var(--font-sans);
}

.form-control:focus,
input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: var(--bg-secondary);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-control:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

textarea.form-control,
textarea {
    min-height: 120px;
    resize: vertical;
}

.form-text {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.form-error {
    color: var(--danger);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.form-check-input {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.form-check-label {
    cursor: pointer;
    color: var(--text-secondary);
}

/* ============================================
   Home (humanizado)
   ============================================ */

.home {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.home-hero {
    padding: 4.5rem 0 3.5rem;
    max-width: 44rem;
}

.home-title {
    font-family: var(--font-serif);
    font-size: clamp(2.1rem, 5vw, 3.25rem);
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.015em;
    margin-bottom: 1.25rem;
}

.home-lead {
    font-size: 1.125rem;
    line-height: 1.65;
    color: var(--text-secondary);
    max-width: 60ch;
    margin-bottom: 2rem;
}

.home-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.home-section {
    padding: 2.5rem 0;
    border-top: 1px solid var(--border-color);
}

.home-section h2 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.home-steps {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    counter-reset: step;
}

.home-steps li {
    counter-increment: step;
}

.home-steps li::before {
    content: counter(step) ".";
    display: block;
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--accent-primary);
    margin-bottom: 0.4rem;
}

.home-steps h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.home-steps p {
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

.home-numbers {
    display: flex;
    gap: 3rem;
    flex-wrap: wrap;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.home-numbers strong {
    display: block;
    font-family: var(--font-serif);
    font-size: 1.9rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.2;
}

.home-note {
    margin: 0;
    color: var(--text-secondary);
}

.home-actions + .home-note {
    margin-top: .9rem;
    font-size: .92rem;
}

@media (max-width: 720px) {
    .home-hero { padding: 2.5rem 0 2rem; }
    .home-steps { grid-template-columns: 1fr; gap: 1.5rem; }
}

/* Cartões de informação e números (páginas de instituição, disciplina e planeador) */
.info-section {
    max-width: 1400px;
    margin: 3rem auto;
    padding: 0 1rem;
}

.info-cards,
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.25rem;
}

.info-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
}

.info-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.info-icon {
    font-size: 1.25rem;
}

.info-header h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    font-weight: 600;
    margin: 0;
}

.info-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.info-list li {
    padding: 0.6rem 0;
    color: var(--text-secondary);
    line-height: 1.6;
    border-bottom: 1px solid var(--border-color);
}

.info-list li:last-child {
    border-bottom: none;
}

.section-header {
    text-align: left;
    margin-bottom: var(--spacing-xl);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem 1rem;
    border-radius: var(--radius-xl);
    text-align: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.stat-number {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.stat-divider {
    display: none;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 600;
    line-height: 1.15;
    margin-bottom: var(--spacing-lg);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .hero-actions { justify-content: flex-start; }

    .info-cards {
        display: flex;
        flex-direction: row;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        gap: 1rem;
        padding: 1rem;
        -webkit-overflow-scrolling: touch;
    }

    .info-card {
        min-width: 280px;
        max-width: 300px;
        flex-shrink: 0;
        scroll-snap-align: start;
    }

    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================
   Authentication Pages (Login/Signup)
   ============================================ */

.auth-page {
    min-height: 100vh;
    background: var(--bg-primary);
}

.auth-wrapper {
    display: grid;
    grid-template-columns: minmax(420px, 480px) 1fr;
    min-height: 100vh;
}

/* Form Section */
.auth-form-section {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl) var(--spacing-2xl);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
}

.auth-form-container {
    width: 100%;
    max-width: 380px;
}

/* Auth Logo */
.auth-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

.logo-icon svg {
    width: 48px;
    height: 48px;
}

.auth-logo .logo-text {
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.03em;
}

/* Auth Header */
.auth-header {
    margin-bottom: var(--spacing-2xl);
}

.auth-header h1 {
    font-size: clamp(1.5rem, 3vw, 1.875rem);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
    letter-spacing: -0.02em;
}

.auth-header p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* Auth Alert */
.auth-alert {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xl);
    font-size: 0.875rem;
    line-height: 1.5;
}

.auth-alert.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.auth-alert.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

/* Auth Form */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.input-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-tertiary);
    pointer-events: none;
    z-index: 1;
}

.input-group input[type="text"],
.input-group input[type="email"],
.input-group input[type="password"] {
    width: 100%;
    padding: 0.875rem 1rem 0.875rem 2.75rem;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition-fast);
    box-sizing: border-box;
    font-family: var(--font-sans);
}

.input-group input:hover {
    border-color: var(--border-light);
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: var(--bg-secondary);
    box-shadow: 0 0 0 3px rgba(139, 124, 246, 0.1);
}

.input-group input::placeholder {
    color: var(--text-tertiary);
    opacity: 0.7;
}

.toggle-password {
    position: absolute;
    right: 0.75rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-tertiary);
    padding: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.toggle-password:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.input-error {
    font-size: 0.8125rem;
    color: var(--danger);
    margin-top: var(--spacing-xs);
}

/* Form Options */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: calc(-1 * var(--spacing-xs));
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.checkbox-label:hover {
    color: var(--text-primary);
}

.checkbox-label input {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-primary);
    cursor: pointer;
    border-radius: var(--radius-sm);
}

.forgot-link {
    font-size: 0.875rem;
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-fast);
}

.forgot-link:hover {
    color: var(--accent-secondary);
    text-decoration: underline;
}

/* Submit Button */
.btn-submit {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: 1rem 1.5rem;
    background: var(--accent-gradient);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-accent);
}

.btn-submit:active {
    transform: translateY(0);
}

/* Loading State */
.btn-submit.loading {
    opacity: 0.7;
    cursor: not-allowed;
    pointer-events: none;
}

/* Auth Divider */
.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

/* Auth Footer */
.auth-footer {
    margin-top: var(--spacing-xl);
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.auth-footer a {
    color: var(--accent-primary);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-fast);
}

.auth-footer a:hover {
    color: var(--accent-secondary);
    text-decoration: underline;
}

/* Visual Section */
.auth-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    padding: var(--spacing-3xl);
    position: relative;
    overflow: hidden;
}

.auth-visual::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: var(--accent-gradient);
    opacity: 0.1;
    border-radius: 50%;
    filter: blur(100px);
}

.visual-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 500px;
}

.visual-content h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    margin-bottom: var(--spacing-lg);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.visual-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Responsive - Auth Pages */
@media (max-width: 968px) {
    .auth-wrapper {
        grid-template-columns: 1fr;
    }

    .auth-visual {
        display: none;
    }

    .auth-form-section {
        border-right: none;
    }
}

@media (max-width: 480px) {
    .auth-form-section {
        padding: var(--spacing-2xl) var(--spacing-lg);
    }

    .auth-form-container {
        max-width: 100%;
    }
}

/* ============================================
   Footer
   ============================================ */

/* ============================================
   Rodapé
   ============================================ */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 0;
    margin-top: 3rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.footer-logo i {
    font-size: 1.25rem;
    color: var(--accent-primary);
}

.footer-logo span {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.65;
    margin-bottom: 1.25rem;
    max-width: 36ch;
}

.footer-section h3 {
    color: var(--text-primary);
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.footer-section h4 {
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.55rem;
    font-size: 0.9rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.15s;
}

.footer-links a i {
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.footer-links a:hover {
    color: var(--text-primary);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.65rem;
}

.footer-contact li i {
    color: var(--text-tertiary);
    font-size: 0.85rem;
    margin-top: 4px;
    flex-shrink: 0;
}

.footer-contact li span {
    line-height: 1.45;
}

.social-links {
    display: flex;
    gap: 0.5rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.15s, border-color 0.15s;
}

.social-link:hover {
    color: var(--text-primary);
    border-color: var(--text-tertiary);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 1.25rem 0;
}

.footer-bottom p {
    color: var(--text-tertiary);
    font-size: 0.82rem;
    margin: 0;
}

.footer-bottom a {
    color: var(--text-tertiary);
    font-size: 0.82rem;
    text-decoration: none;
}

.footer-bottom a:hover {
    color: var(--accent-primary);
    text-decoration: underline;
}

/* ============================================
   Form Elements - Mobile Optimized
   ============================================ */

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="time"],
input[type="search"],
input[type="tel"],
textarea,
select {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    transition: var(--transition);
    font-family: inherit;
    min-height: 44px;
    -webkit-appearance: none;
    appearance: none;
    touch-action: manipulation;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
input[type="time"]:focus,
input[type="search"]:focus,
input[type="tel"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.1);
    background-color: var(--bg-secondary);
}

input::placeholder,
textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

textarea {
    resize: vertical;
    min-height: 120px;
    font-size: 1rem;
}

select {
    cursor: pointer;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23e0e0e0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1.25rem;
    padding-right: 2.5rem;
}

/* ============================================
   Responsive Design - Mobile First Approach
   ============================================ */

/* Base styles are mobile-first (default) */

/* Images responsive by default */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Mobile hamburger menu hidden by default (shown via media queries) */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    order: 2;
}

.menu-toggle:hover {
    color: var(--accent-color);
}

/* Navigation mobile-first (vertical stacking) */
.nav {
    order: 3;
    flex: 0 0 100%;
    margin: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.nav.active {
    max-height: 400px;
}

.nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.5rem 0;
}

/* Avatar dropdown mobile-friendly */
.user-avatar-dropdown {
    position: relative;
}

.avatar-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-size: cover;
    background-position: center;
    border: 2px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    padding: 0;
    position: relative;
    overflow: hidden;
    font-size: 0;
}

.avatar-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.5);
    border-color: rgba(255, 255, 255, 0.4);
}

.avatar-btn:active {
    transform: scale(0.95);
}

.avatar-img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.avatar-initials {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
}

.avatar-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    min-width: 180px;
    margin-top: 0.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1000;
}

.avatar-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.dropdown-username {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
}

.dropdown-role {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.dropdown-divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 0;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.dropdown-item:hover {
    background: var(--bg-tertiary);
    color: var(--accent-color);
    text-decoration: none;
}

.dropdown-logout:hover {
    background: rgba(214, 48, 49, 0.1);
    color: var(--danger-color);
}

.dropdown-icon {
    font-size: 1rem;
}

/* Small Mobile - 480px */
@media (max-width: 480px) {
    :root {
        --spacing-xs: 0.125rem;
        --spacing-sm: 0.25rem;
        --spacing-md: 0.5rem;
        --spacing-lg: 0.75rem;
        --spacing-xl: 1rem;
        --spacing-2xl: 1.25rem;
    }

    body {
        font-size: 14px;
        line-height: 1.5;
    }

    h1 { font-size: 1.25rem; }
    h2 { font-size: 1.1rem; }
    h3 { font-size: 1rem; }

    .container {
        padding: 0.75rem;
    }

    .header {
        padding: 0.5rem 0;
    }

    .header-container {
        padding: 0 0.75rem;
        gap: 0.5rem;
        flex-wrap: nowrap;
        justify-content: space-between;
    }

    .logo {
        order: 1;
        flex-shrink: 0;
    }

    .logo h1 {
        font-size: 1.1rem;
        margin: 0;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }

    .logo::before {
        width: 32px;
        height: 32px;
    }

    .header-right {
        order: 2;
        display: flex;
        align-items: center;
        gap: 0.4rem;
        justify-content: flex-end;
        flex: 0;
    }

    .menu-toggle {
        display: none !important;
    }

    .nav {
        display: none;
    }

    .nav.active {
        display: none;
    }

    .header-actions {
        display: flex;
        align-items: center;
        gap: 0.4rem;
    }

    .avatar-btn {
        width: 40px;
        height: 40px;
        min-width: 40px;
        min-height: 40px;
    }

    .toggle-btn {
        width: 40px;
        height: 40px;
        padding: 0.5rem;
        font-size: 1.1rem;
    }

    /* Grid: 2 colunas lado a lado no mobile */
    .dashboard-grid {
        display: grid !important;
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 0.75rem;
        overflow-x: visible;
        overflow-y: visible;
    }

    .institutions-grid,
    .materials-grid,
    .grid,
    .grid-2,
    .grid-3,
    .grid-4 {
        display: flex !important;
        overflow-x: auto;
        overflow-y: hidden;
        gap: 0.75rem;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 0.5rem;
    }

    .dashboard-grid::-webkit-scrollbar,
    .institutions-grid::-webkit-scrollbar,
    .materials-grid::-webkit-scrollbar {
        height: 3px;
    }

    .dashboard-grid::-webkit-scrollbar-track,
    .institutions-grid::-webkit-scrollbar-track,
    .materials-grid::-webkit-scrollbar-track {
        background: transparent;
    }

    .dashboard-grid::-webkit-scrollbar-thumb,
    .institutions-grid::-webkit-scrollbar-thumb,
    .materials-grid::-webkit-scrollbar-thumb {
        background: rgba(139, 124, 246, 0.5);
        border-radius: 4px;
    }

    /* Dashboard cards - 2 colunas lado a lado */
    .dashboard-grid .dashboard-card {
        min-width: auto;
        max-width: none;
        padding: 1rem;
    }

    /* Cards no scroll horizontal - tamanho reduzido */
    .institution-card,
    .material-card,
    .card {
        min-width: 160px;
        max-width: 180px;
        flex-shrink: 0;
        scroll-snap-align: start;
        padding: 1rem;
    }

    .dashboard-card h3 {
        font-size: 0.95rem;
        margin-bottom: 0.5rem;
    }

    .institution-card h3,
    .material-card h3,
    .card h3 {
        font-size: 0.95rem;
        margin-bottom: 0.5rem;
    }

    .dashboard-card .card-icon {
        font-size: 2rem;
        margin-bottom: 0.5rem;
    }

    .institution-card .institution-icon,
    .material-card .material-icon {
        font-size: 2rem;
        margin-bottom: 0.5rem;
    }

    .dashboard-card .card-value {
        font-size: 1.5rem;
        margin: 0.5rem 0;
    }

    .dashboard-card .card-label,
    .institution-card p,
    .material-card p {
        font-size: 0.8rem;
        margin: 0.5rem 0;
    }

    .dashboard-card .card-link {
        font-size: 0.85rem;
        padding: 0.4rem 0.75rem;
    }

    /* Forms mobile-friendly */
    input,
    textarea,
    select {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 0.75rem;
        min-height: 44px; /* Apple HIG minimum */
    }

    .btn {
        padding: 0.75rem 1rem;
        min-height: 44px;
        font-size: 1rem;
    }

    /* Footer single column */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footer-logo {
        justify-content: center;
    }

    .footer-section h4 {
        display: block;
    }

    .footer-links a {
        justify-content: center;
    }

    .footer-contact li {
        justify-content: center;
    }

    .social-links {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    /* Tables scroll horizontally */
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    table {
        min-width: 500px;
        font-size: 0.85rem;
    }

    /* Modal full-width on small screens */
    .modal-content {
        width: 95% !important;
        max-height: 90vh;
        margin: 5vh auto;
    }
}

/* Medium Mobile to Small Tablet - 481px to 768px */
@media (min-width: 481px) and (max-width: 768px) {
    body {
        font-size: 15px;
    }

    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.25rem; }
    h3 { font-size: 1.1rem; }

    .container {
        padding: 1rem;
    }

    .header-container {
        padding: 0 1rem;
        gap: 0.75rem;
    }

    .logo h1 {
        font-size: 1.4rem;
    }

    .menu-toggle {
        display: flex !important;
    }

    .nav.active {
        max-height: 350px;
    }

    .nav-link {
        padding: 0.75rem;
        background: var(--bg-tertiary);
    }

    .avatar-btn {
        width: 38px;
        height: 38px;
    }

    /* Grid: 1-2 columns depending on content */
    .dashboard-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1rem;
    }

    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }

    .modal-content {
        width: 90% !important;
    }
}

/* Tablet - 769px to 1024px */
@media (min-width: 769px) and (max-width: 1024px) {
    body {
        font-size: 16px;
    }

    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }

    .container {
        padding: 1rem 1.5rem;
        max-width: 90%;
    }

    .header-container {
        padding: 0 1.5rem;
    }

    /* Keep hamburger menu on tablet for space efficiency */
    .menu-toggle {
        display: flex !important;
    }

    .nav {
        order: 3;
        flex: 0 0 100%;
    }

    .nav.active {
        max-height: 400px;
    }

    .avatar-btn {
        width: 40px;
        height: 40px;
    }

    /* Grid: 2-3 columns */
    .dashboard-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }

    .grid-3 {
        grid-template-columns: repeat(3, 1fr) !important;
    }

    .grid-4 {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    .footer-grid {
        grid-template-columns: 1.6fr 1fr 1fr;
        gap: 2rem;
    }

    .modal-content {
        width: 80% !important;
        max-width: 600px;
    }
}

/* Desktop - 1025px and up */
@media (min-width: 1025px) {
    .container {
        max-width: 1200px;
        padding: 0 2rem;
    }

    .header-container {
        padding: 0 2rem;
        gap: 1rem;
        flex-wrap: nowrap;
    }

    .logo {
        flex-shrink: 0;
    }

    /* Hide hamburger, show full navigation */
    .menu-toggle {
        display: none !important;
    }

    .nav {
        flex: 1;
        order: 0;
        max-height: none !important;
        margin: 0;
    }

    .nav-list {
        flex-direction: row;
        gap: 1.5rem;
        padding: 0;
    }

    .nav-link {
        background: transparent !important;
        padding: 0.5rem 1rem;
        white-space: nowrap;
    }

    .header-right {
        display: flex;
        align-items: center;
        gap: 1.5rem;
        flex-shrink: 0;
        order: 2;
    }

    .avatar-btn {
        width: 42px;
        height: 42px;
    }

    /* Grid: Full columns */
    .dashboard-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 2rem;
    }

    .grid-3 {
        grid-template-columns: repeat(3, 1fr) !important;
    }

    .grid-4 {
        grid-template-columns: repeat(4, 1fr) !important;
    }

    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 2rem;
        text-align: left;
    }

    .social-links {
        justify-content: flex-start;
    }

    .modal-content {
        width: 60% !important;
        max-width: 800px;
    }

    /* Button groups horizontal */
    .btn-group {
        flex-direction: row;
        gap: 1rem;
    }

    .btn-group .btn {
        flex: 1;
        width: auto;
    }

    /* Forms can be more compact */
    .form-row {
        display: flex;
        gap: 1rem;
        align-items: end;
    }

    .form-row .form-group {
        flex: 1;
        margin-bottom: 0;
    }
}

/* ============================================
   Responsive Utilities (Web + Mobile)
   ============================================ */

/* Fluid images utility */
.img-fluid {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Simple layout helpers */
.stack {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.cluster {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-md);
}

/* Auto-fit grid utility */
.grid-responsive {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

/* Visibility helpers */
@media (max-width: 768px) {
    .hide-mobile { display: none !important; }
}

@media (min-width: 769px) {
    .hide-desktop { display: none !important; }
}

/* Prevent nav link wrapping on desktop */
@media (min-width: 1025px) {
    .nav-link { white-space: nowrap; }
}

/* ============================================
   Dynamic Layout Enhancements
   ============================================ */

/* Ensure cards scale properly */
.dashboard-card,
.card,
.material-card,
.institution-card {
    min-width: 0; /* Prevent overflow */
    break-inside: avoid;
}

/* Responsive tables */
.table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table {
    width: 100%;
    border-collapse: collapse;
}

/* Mobile: Stack form rows vertically */
@media (max-width: 768px) {
    .form-row {
        flex-direction: column !important;
        gap: 1rem !important;
    }

    .form-row .form-group {
        width: 100%;
        margin-bottom: 0;
    }

    /* Responsive button groups */
    .btn-group {
        flex-direction: column !important;
    }

    .btn-group .btn {
        width: 100% !important;
    }

    /* Compact modals on mobile */
    .modal-content {
        max-height: 95vh;
        overflow-y: auto;
    }

    /* Responsive filter sections */
    .filter-section {
        flex-direction: column !important;
    }

    .filter-section input,
    .filter-section select {
        width: 100%;
    }
}

/* Tablet: 2-column layouts where applicable */
@media (min-width: 641px) and (max-width: 1024px) {
    .grid-responsive {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

/* Desktop: Full-featured layouts */
@media (min-width: 1025px) {
    .grid-responsive {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    }

    /* Compact spacing on desktop */
    .form-row {
        display: flex;
        gap: 1.5rem;
    }

    .form-row .form-group {
        flex: 1;
    }
}

/* ============================================
   Plans Page - Horizontal Layout
   ============================================ */

.plans-page {
  max-width: 1400px;
  margin: 0 auto;
  padding: 3rem 1rem;
  background: linear-gradient(180deg, rgba(139,124,246,0.03) 0%, transparent 100%);
}

.plans-header {
  text-align: center;
  margin-bottom: 4rem;
}

.plans-header h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #8b7cf6 0%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
  letter-spacing: -1px;
}

.plans-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  font-weight: 400;
}

/* Plans Grid - Desktop: Horizontal */
.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

/* Plan Card */
.plan-card {
  background: var(--bg-secondary);
  border: 2px solid transparent;
  border-radius: 24px;
  padding: 2.5rem 2rem;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.plan-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #8b7cf6, #a78bfa);
  opacity: 0;
  transition: opacity 0.4s;
}

.plan-card:hover {
  transform: translateY(-8px);
  border-color: rgba(139, 124, 246, 0.3);
  box-shadow: 0 20px 60px rgba(139, 124, 246, 0.15);
}

.plan-card:hover::before {
  opacity: 1;
}

.plan-card.featured {
  border: 2px solid #8b7cf6;
  box-shadow: 0 8px 32px rgba(139, 124, 246, 0.2);
  transform: scale(1.05);
  background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(139,124,246,0.05) 100%);
}

.plan-card.featured:hover {
  transform: scale(1.05) translateY(-8px);
}

.plan-card.featured::before {
  opacity: 1;
  height: 6px;
}

.plan-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  padding: 0.5rem 1.5rem;
  border-radius: 30px;
  font-size: 0.8rem;
  font-weight: 700;
  border: 2px solid var(--border-color);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.plan-badge.best {
  background: linear-gradient(135deg, #8b7cf6, #a78bfa);
  color: #fff;
  border: none;
  box-shadow: 0 4px 12px rgba(139, 124, 246, 0.4);
}

.plan-badge.discount {
  background: linear-gradient(135deg, #27ae60, #2ecc71);
  color: #fff;
  border: none;
  box-shadow: 0 4px 12px rgba(39, 174, 96, 0.4);
}

.plan-icon {
  font-size: 4rem;
  margin: 2rem 0 1.5rem;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));
}

.plan-name {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: -0.5px;
}

.plan-price {
  margin-bottom: 1.5rem;
}

.price {
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(135deg, #8b7cf6, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.price-old {
  font-size: 1.3rem;
  color: var(--text-secondary);
  text-decoration: line-through;
  display: block;
  margin-bottom: 0.5rem;
  opacity: 0.6;
}

.period {
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-left: 0.25rem;
}

.plan-description {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 1rem;
  font-weight: 500;
}

.plan-features {
  list-style: none;
  padding: 0;
  margin: 2rem 0;
  text-align: left;
  flex-grow: 1;
}

.plan-features li {
  padding: 0.75rem 0;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 1rem;
  transition: transform 0.2s;
}

.plan-features li:hover {
  transform: translateX(4px);
}

.plan-features li.disabled {
  color: var(--text-secondary);
  opacity: 0.5;
}

.plan-features .check {
  color: #27ae60;
  font-weight: 700;
  font-size: 1.3rem;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 4px rgba(39, 174, 96, 0.3));
}

.plan-features .x {
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 1.3rem;
  flex-shrink: 0;
  opacity: 0.4;
}

.plan-btn {
  display: block;
  width: 100%;
  padding: 1.1rem 2rem;
  border-radius: 16px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  margin-top: auto;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: relative;
  overflow: hidden;
}

.plan-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.plan-btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-free {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.btn-free:hover {
  background: var(--bg-primary);
  border-color: #8b7cf6;
  transform: scale(1.02);
}

.btn-standard {
  background: linear-gradient(135deg, #3498db, #2980b9);
  color: #fff;
  box-shadow: 0 4px 16px rgba(52, 152, 219, 0.3);
}

.btn-standard:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 24px rgba(52, 152, 219, 0.5);
}

.btn-premium {
  background: linear-gradient(135deg, #8b7cf6, #a78bfa);
  color: #fff;
  box-shadow: 0 4px 16px rgba(139, 124, 246, 0.4);
}

.btn-premium:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 24px rgba(139, 124, 246, 0.6);
}

.btn-trimestral {
  background: linear-gradient(135deg, #27ae60, #2ecc71);
  color: #fff;
  box-shadow: 0 4px 16px rgba(39, 174, 96, 0.3);
}

.btn-trimestral:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 24px rgba(39, 174, 96, 0.5);
}

/* Mobile: Horizontal Scroll */
@media (max-width: 768px) {
  .plans-page {
    padding: 2rem 0;
  }

  .plans-grid {
    display: flex !important;
    flex-direction: row !important;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    gap: 1rem;
    padding: 1rem;
    margin-bottom: 2rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: rgba(139,124,246,0.5) transparent;
    grid-template-columns: none;
  }

  .plans-grid::-webkit-scrollbar {
    height: 3px;
  }

  .plans-grid::-webkit-scrollbar-track {
    background: transparent;
  }

  .plans-grid::-webkit-scrollbar-thumb {
    background: rgba(139,124,246,0.5);
    border-radius: 10px;
  }

  .plan-card {
    min-width: 280px;
    max-width: 300px;
    flex-shrink: 0;
    scroll-snap-align: start;
    padding: 1.5rem 1rem;
  }

  .plan-card.featured {
    transform: none;
  }

  .plan-card.featured:hover {
    transform: translateY(-8px);
  }

  .plans-header {
    margin-bottom: 2rem;
  }

  .plans-header h1 {
    font-size: 1.8rem;
  }

  .plans-subtitle {
    font-size: 0.95rem;
  }

  .plan-badge {
    font-size: 0.7rem;
    padding: 0.35rem 1rem;
  }

  .plan-icon {
    font-size: 2.5rem;
    margin: 1rem 0 0.75rem;
  }

  .plan-name {
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
  }

  .plan-price {
    margin-bottom: 0.75rem;
  }

  .price {
    font-size: 2rem;
  }

  .period {
    font-size: 0.9rem;
  }

  .plan-description {
    font-size: 0.85rem;
    margin-bottom: 1rem;
  }

  .plan-features {
    margin: 1rem 0;
  }

  .plan-features li {
    padding: 0.5rem 0;
    font-size: 0.85rem;
    gap: 0.6rem;
  }

  .plan-features .check,
  .plan-features .x {
    font-size: 1rem;
  }

  .plan-btn {
    padding: 0.85rem 1.25rem;
    font-size: 0.9rem;
  }
}

/* ============================================
   Plans Comparison Table
   ============================================ */

.plans-comparison {
  background: var(--bg-secondary);
  border-radius: 24px;
  padding: 3rem 2rem;
  margin-bottom: 3rem;
  border: 2px solid transparent;
  background-image: linear-gradient(var(--bg-secondary), var(--bg-secondary)), 
                    linear-gradient(135deg, #8b7cf6, #a78bfa);
  background-origin: border-box;
  background-clip: padding-box, border-box;
}

.plans-comparison h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 2.5rem;
  background: linear-gradient(135deg, #8b7cf6, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

.comparison-table-wrapper {
  overflow-x: auto;
  border-radius: 16px;
  -webkit-overflow-scrolling: touch;
}

.comparison-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.comparison-table thead {
  background: linear-gradient(135deg, rgba(139,124,246,0.15), rgba(167,139,250,0.15));
}

.comparison-table th {
  padding: 1.25rem 1.5rem;
  text-align: center;
  font-weight: 700;
  color: var(--text-primary);
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 2px solid rgba(139,124,246,0.3);
}

.comparison-table th:first-child {
  text-align: left;
  background: linear-gradient(135deg, #8b7cf6, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.comparison-table tbody tr {
  transition: background 0.2s;
}

.comparison-table tbody tr:hover {
  background: rgba(139,124,246,0.05);
}

.comparison-table td {
  padding: 1rem 1.5rem;
  text-align: center;
  color: var(--text-primary);
  border-bottom: 1px solid rgba(139,124,246,0.1);
  font-size: 0.95rem;
}

.comparison-table td:first-child {
  text-align: left;
  font-weight: 600;
  color: var(--text-primary);
}

.comparison-table .yes {
  color: #27ae60;
  font-weight: 700;
  font-size: 1.5rem;
  filter: drop-shadow(0 2px 4px rgba(39, 174, 96, 0.3));
}

.comparison-table .no {
  color: var(--text-secondary);
  font-size: 1.5rem;
  opacity: 0.4;
}

.comparison-table .partial {
  color: #f39c12;
  font-size: 0.9rem;
  font-weight: 600;
  background: rgba(243, 156, 18, 0.1);
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  display: inline-block;
}

/* ============================================
   Plans FAQ Section
   ============================================ */

.plans-faq {
  background: var(--bg-secondary);
  border-radius: 24px;
  padding: 3rem 2rem;
  border: 2px solid rgba(139,124,246,0.2);
}

.plans-faq h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 3rem;
  background: linear-gradient(135deg, #8b7cf6, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.faq-item {
  background: linear-gradient(135deg, rgba(139,124,246,0.05), rgba(167,139,250,0.05));
  padding: 2rem;
  border-radius: 16px;
  border: 1px solid rgba(139,124,246,0.15);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.faq-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, #8b7cf6, #a78bfa);
  opacity: 0;
  transition: opacity 0.3s;
}

.faq-item:hover {
  transform: translateY(-4px);
  border-color: rgba(139,124,246,0.4);
  box-shadow: 0 12px 32px rgba(139, 124, 246, 0.15);
}

.faq-item:hover::before {
  opacity: 1;
}

.faq-item h4 {
  color: var(--text-primary);
  margin-bottom: 1rem;
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.faq-item h4::before {
  content: '💡';
  font-size: 1.25rem;
}

.faq-item p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
  .plans-comparison,
  .plans-faq {
    padding: 2rem 1rem;
    margin-bottom: 2rem;
  }

  .plans-comparison h2,
  .plans-faq h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
  }

  .comparison-table-wrapper {
    border-radius: 12px;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 0.75rem 0.5rem;
    font-size: 0.85rem;
  }

  .comparison-table th {
    font-size: 0.8rem;
  }

  .comparison-table .yes,
  .comparison-table .no {
    font-size: 1.2rem;
  }

  .faq-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .faq-item {
    padding: 1.5rem;
  }

  .faq-item h4 {
    font-size: 1rem;
  }

  .faq-item p {
    font-size: 0.9rem;
  }
}

/* ============================================
   Profile Plan Card - Same Design as Plans Page
   ============================================ */

.plan-info-card {
  position: relative;
  overflow: hidden;
}

.plan-info-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #8b7cf6, #a78bfa);
}

.plan-info-card.plan-free::before {
  background: linear-gradient(90deg, #6b7280, #9ca3af);
}

.plan-info-card.plan-standard::before {
  background: linear-gradient(90deg, #3498db, #2980b9);
}

.plan-info-card.plan-premium::before {
  background: linear-gradient(90deg, #8b7cf6, #a78bfa);
}

.plan-info-card.plan-trimestral::before {
  background: linear-gradient(90deg, #27ae60, #2ecc71);
}

.plan-info-main {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.plan-badge-large {
  font-size: 4rem;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));
  flex-shrink: 0;
}

.plan-details h3 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: -0.5px;
}

.plan-status {
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.plan-status.active {
  color: var(--success);
}

.plan-expiry {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

.plan-features-mini {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem 0;
}

.feature-item {
  padding: 0.75rem 0;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 1rem;
  transition: transform 0.2s;
  border-bottom: 1px solid var(--border-color);
}

.feature-item:last-child {
  border-bottom: none;
}

.feature-item:hover {
  transform: translateX(4px);
}

.feature-icon {
  color: #27ae60;
  font-weight: 700;
  font-size: 1.3rem;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 4px rgba(39, 174, 96, 0.3));
}

.btn-upgrade-profile {
  display: block;
  width: 100%;
  padding: 1.1rem 2rem;
  border-radius: 16px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
  text-align: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #8b7cf6, #a78bfa);
  color: #fff;
  box-shadow: 0 4px 16px rgba(139, 124, 246, 0.4);
}

.btn-upgrade-profile::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-upgrade-profile:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 24px rgba(139, 124, 246, 0.6);
}

.btn-upgrade-profile:hover::before {
  width: 300px;
  height: 300px;
}

/* ============================================================
   IN-APP NOTIFICATION SYSTEM  •  v1.0
   Bell: .notif-bell-wrap  |  Panel: .note  |  Item: .note_inner
   ============================================================ */

/* ── Bell button ────────────────────────────────────────────── */
.notif-bell-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.notif-bell {
    background: transparent;
    border: none;
    cursor: pointer;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    transition: background .15s, color .15s;
}
.notif-bell:hover {
    background: rgba(139, 124, 246, .12);
    color: var(--accent-primary);
}

/* ── Unread badge ────────────────────────────────────────────── */
.notif-badge {
    position: absolute;
    top: 1px;
    right: 1px;
    background: var(--danger);
    color: #fff;
    font-size: .6rem;
    font-weight: 800;
    min-width: 16px;
    height: 16px;
    border-radius: 99px;
    display: none;          /* hidden by default */
    align-items: center;
    justify-content: center;
    padding: 0 3px;
    line-height: 1;
    pointer-events: none;
    border: 2px solid var(--bg-primary);
}
.notif-badge.has-unread {
    display: flex;
}

/* ── Notification panel (.note) ─────────────────────────────── */
.note {
    position: fixed;
    top: 66px;
    right: 16px;
    width: 340px;
    max-height: 520px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-popover);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    /* closed state */
    opacity: 0;
    transform: translateY(-8px) scale(.97);
    pointer-events: none;
    transition: opacity .2s ease, transform .2s cubic-bezier(.4, 0, .2, 1);
}
.note.open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

/* Panel header */
.note-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 15px 11px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}
.note-head h3 {
    font-size: .88rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}
.note-mark-all {
    font-size: .73rem;
    color: var(--accent-primary);
    background: none;
    border: none;
    cursor: pointer;
    font-weight: 600;
    padding: 0;
    transition: opacity .15s;
}
.note-mark-all:hover { opacity: .75; text-decoration: underline; }

/* Scrollable list */
.note-list {
    overflow-y: auto;
    flex: 1;
    padding: 4px 0;
}
.note-list::-webkit-scrollbar { width: 4px; }
.note-list::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 99px;
}

/* Empty state */
.note-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 44px 24px;
    color: var(--text-tertiary);
    font-size: .83rem;
}
.note-empty-icon { font-size: 1.9rem; opacity: .45; }

/* ── Item animation: fade + slide in, 0.75s, fill forwards ──── */
@keyframes note-slide-in {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ── Individual notification item (.note_inner) ──────────────── */
.note_inner {
    position: relative;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 11px 13px;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background .15s;
    /* entry animation */
    animation: note-slide-in .75s cubic-bezier(.4, 0, .2, 1) both;
}
.note_inner:last-child { border-bottom: none; }
.note_inner:hover { background: rgba(139, 124, 246, .07); }

/* Unread indicator */
.note_inner.unread { background: rgba(139, 124, 246, .05); }
.note_inner.unread::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--accent-primary);
    border-radius: 0 3px 3px 0;
}

/* Type-coloured icon background */
.note-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 1px;
}
.note_inner.type-success .note-icon { background: rgba(16, 185, 129, .13); }
.note_inner.type-info    .note-icon { background: rgba(59, 130, 246, .13); }
.note_inner.type-warning .note-icon { background: rgba(245, 158, 11,  .13); }
.note_inner.type-error   .note-icon { background: rgba(239, 68,  68,  .13); }
.note_inner.type-success .note-icon { color: var(--success); }
.note_inner.type-info    .note-icon { color: var(--info-light); }
.note_inner.type-warning .note-icon { color: var(--warning); }
.note_inner.type-error   .note-icon { color: var(--danger); }
.note-dismiss { line-height: 1; }

/* Text body */
.note-body { flex: 1; min-width: 0; }

.note-title {
    font-size: .81rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
}
.note-msg {
    font-size: .76rem;
    color: var(--text-secondary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Timestamp */
.note-time {
    font-size: .69rem;
    color: var(--text-tertiary);
    flex-shrink: 0;
    margin-top: 2px;
    white-space: nowrap;
}

/* Dismiss button */
.note-dismiss {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    font-size: .78rem;
    padding: 2px 5px;
    border-radius: 4px;
    opacity: 0;
    transition: opacity .15s, color .15s, background .15s;
    flex-shrink: 0;
    line-height: 1;
    align-self: flex-start;
}
.note_inner:hover .note-dismiss { opacity: 1; }
.note-dismiss:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, .1);
}

/* ── Light-theme adjustments ────────────────────────────────── */
body.light-theme .note {
    background: #ffffff;
    border-color: rgba(0,0,0,.10);
    box-shadow: 0 8px 32px rgba(0,0,0,.14);
}
body.light-theme .note-head { border-color: rgba(0,0,0,.09); }
body.light-theme .note_inner { border-color: rgba(0,0,0,.07); }
body.light-theme .note_inner:hover { background: rgba(99, 102, 241, .06); }
body.light-theme .note_inner.unread { background: rgba(99, 102, 241, .04); }
body.light-theme .note_inner.unread::before { background: #6366f1; }
body.light-theme .notif-badge { border-color: #eef0f4; }

/* ── "Ver todas" link + drawer pela direita ─────────────────── */
.note-view-all {
    flex-shrink: 0;
    width: 100%;
    padding: 10px 15px;
    background: none;
    border: none;
    border-top: 1px solid var(--border-color);
    color: var(--accent-primary);
    font-size: .78rem;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: background .15s;
}
.note-view-all:hover { background: rgba(139, 124, 246, .07); }

.note-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .4);
    z-index: var(--z-popover);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s ease;
}
.note-overlay.open { opacity: 1; pointer-events: auto; }

.note-drawer {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 400px;
    max-width: 100vw;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
    z-index: calc(var(--z-popover) + 1);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform .3s cubic-bezier(.4, 0, .2, 1), visibility 0s linear .3s;
}
.note-drawer.open {
    transform: translateX(0);
    visibility: visible;
    transition: transform .3s cubic-bezier(.4, 0, .2, 1), visibility 0s;
}
.note-drawer-actions { display: flex; align-items: center; gap: 12px; }
.note-drawer-close {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    font-size: .95rem;
    padding: 4px 6px;
    border-radius: 4px;
    line-height: 1;
}
.note-drawer-close:hover { color: var(--text-primary); background: rgba(139, 124, 246, .1); }
body.light-theme .note-drawer {
    background: #ffffff;
    border-color: rgba(0,0,0,.10);
    box-shadow: -8px 0 32px rgba(0,0,0,.14);
}
body.light-theme .note-view-all { border-color: rgba(0,0,0,.09); }

/* ── Auto-popup toast (notificação inicial, 5 s) ────────────── */
.notif-popup-toast {
    position: fixed;
    top: 66px;
    right: 16px;
    width: 340px;
    max-width: calc(100vw - 32px);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 13px 15px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--accent-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-popover);
    cursor: pointer;
    /* hidden state */
    opacity: 0;
    transform: translateY(-8px) scale(.97);
    transition: opacity .25s ease, transform .25s cubic-bezier(.4, 0, .2, 1);
}
.notif-popup-toast.show {
    opacity: 1;
    transform: translateY(0) scale(1);
}
.notif-popup-toast:hover { border-color: var(--accent-primary); }
.notif-popup-toast:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}
.notif-popup-toast__icon { font-size: 1.2rem; line-height: 1.3; flex-shrink: 0; }
.notif-popup-toast__body { min-width: 0; }
.notif-popup-toast__title {
    font-size: .86rem;
    font-weight: 700;
    color: var(--text-primary);
}
.notif-popup-toast__msg {
    margin-top: 3px;
    font-size: .78rem;
    line-height: 1.4;
    color: var(--text-secondary);
}
body.light-theme .notif-popup-toast {
    background: #ffffff;
    border-color: rgba(0,0,0,.10);
    border-left-color: #6366f1;
    box-shadow: 0 8px 32px rgba(0,0,0,.14);
}

/* ── Mobile ─────────────────────────────────────────────────── */
@media (max-width: 480px) {
    .note {
        right: 8px;
        left: 8px;
        width: auto;
        top: 62px;
    }
    .notif-popup-toast {
        right: 8px;
        left: 8px;
        width: auto;
        max-width: none;
        top: 62px;
    }
}