/* ==========================================================================
   SMARTDOCIFY - PDF TO JPG CONVERTER STYLESHEET
   Clean, Modern, Accessible Design matching SmartDocify Reference UI
   Light & Dark Theme Support, Responsive Grid, High-DPI Canvas Rendering
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS VARIABLES & THEMES
   -------------------------------------------------------------------------- */
:root {
  /* Brand Palette */
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: rgba(37, 99, 235, 0.12);
  --primary-border: rgba(37, 99, 235, 0.3);
  --secondary: #7c3aed;
  --secondary-hover: #6d28d9;
  --secondary-light: rgba(124, 58, 237, 0.12);
  --accent: #06b6d4;
  --success: #10b981;
  --success-hover: #059669;
  --success-light: rgba(16, 185, 129, 0.12);
  --success-border: rgba(16, 185, 129, 0.3);
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --danger-light: rgba(239, 68, 68, 0.12);
  --danger-border: rgba(239, 68, 68, 0.3);
  --warning: #f59e0b;
  --warning-light: rgba(245, 158, 11, 0.12);
  --warning-border: rgba(245, 158, 11, 0.3);

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Default Dark Theme */
  --bg-page: #080d1a;
  --bg-card: #111c30;
  --bg-card-alt: #16233b;
  --bg-card-hover: #192742;
  --bg-backdrop: rgba(3, 7, 18, 0.75);
  --text-main: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;
  --border-color: #1e293b;
  --border-light: #162032;
  --border-hover: #334155;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 24px rgba(37, 99, 235, 0.25);
  --shadow-glow-success: 0 0 24px rgba(16, 185, 129, 0.25);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

/* Light Theme Overrides */
[data-theme="light"] {
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-alt: #f1f5f9;
  --bg-card-hover: #e2e8f0;
  --bg-backdrop: rgba(15, 23, 42, 0.6);
  --text-main: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-subtle: #94a3b8;
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  --border-hover: #cbd5e1;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08);
}

/* --------------------------------------------------------------------------
   2. RESET & BASE ELEMENTS
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

[hidden] {
  display: none !important;
}

/* --------------------------------------------------------------------------
   3. LAYOUT & CONTAINERS
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 2.5rem 0;
}

/* --------------------------------------------------------------------------
   4. SITE HEADER & NAVIGATION
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(8, 13, 26, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-normal);
}

[data-theme="light"] .site-header {
  background-color: rgba(255, 255, 255, 0.9);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Brand Logo */
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--text-main);
  transition: opacity var(--transition-fast);
}

.brand-logo:hover {
  opacity: 0.9;
}

.logo-icon-wrapper {
  display: flex;
  align-items: center;
}

.logo-svg {
  width: 28px;
  height: 28px;
}

.logo-text {
  font-weight: 800;
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Desktop Nav */
.desktop-nav .nav-list {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  background-color: var(--primary-light);
}

/* Header Action Buttons */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.action-btn:hover {
  color: var(--text-main);
  border-color: var(--border-hover);
  background-color: var(--bg-card-alt);
}

.ui-icon {
  width: 20px;
  height: 20px;
}

/* Theme toggle icon switching */
[data-theme="dark"] .icon-sun {
  display: block;
}
[data-theme="dark"] .icon-moon {
  display: none;
}
[data-theme="light"] .icon-sun {
  display: none;
}
[data-theme="light"] .icon-moon {
  display: block;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
}

.hamburger-box {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

.hamburger-line {
  height: 2px;
  width: 100%;
  background-color: currentColor;
  border-radius: 2px;
}

/* Mobile Navigation Drawer */
.mobile-nav-backdrop {
  position: fixed;
  inset: 0;
  background-color: var(--bg-backdrop);
  backdrop-filter: blur(4px);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.mobile-nav-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 280px;
  max-width: 85vw;
  background-color: var(--bg-card);
  border-left: 1px solid var(--border-color);
  z-index: 999;
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
}

.mobile-nav-drawer.open {
  transform: translateX(0);
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}

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

.mobile-nav-link {
  display: block;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--primary);
  background-color: var(--primary-light);
}

/* --------------------------------------------------------------------------
   5. BUTTONS & UI ATOMS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-align: center;
  white-space: nowrap;
  user-select: none;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-icon {
  width: 18px;
  height: 18px;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  background-color: var(--bg-card-alt);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

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

.btn-success {
  background-color: var(--success);
  color: #ffffff;
}

.btn-success:hover {
  background-color: var(--success-hover);
  box-shadow: var(--shadow-glow-success);
}

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

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

.btn-sm {
  font-size: 0.82rem;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-md {
  font-size: 0.92rem;
  padding: 0.65rem 1.25rem;
}

.btn-lg {
  font-size: 1.05rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-lg);
}

/* --------------------------------------------------------------------------
   6. HERO SECTION & TRUST BADGES
   -------------------------------------------------------------------------- */
.tool-hero-section {
  padding: 3rem 0 1.5rem;
  text-align: center;
}

.hero-badges-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 1.25rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  background-color: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-border);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: currentColor;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto 1.5rem;
}

.privacy-trust-note {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
}

.trust-icon {
  width: 16px;
  height: 16px;
  color: var(--success);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   7. UPLOAD SECTION & DROPZONE
   -------------------------------------------------------------------------- */
.upload-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem;
  max-width: 780px;
  margin: 0 auto;
  box-shadow: var(--shadow-md);
  transition: border-color var(--transition-normal);
}

.upload-dropzone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  background-color: var(--bg-card-alt);
  transition: all var(--transition-normal);
}

.upload-dropzone.dragover {
  border-color: var(--primary);
  background-color: var(--primary-light);
  transform: scale(1.01);
}

.dropzone-icon-box {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.25rem;
  border-radius: var(--radius-lg);
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.dropzone-svg {
  width: 32px;
  height: 32px;
}

.dropzone-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.35rem;
}

.dropzone-text {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.dropzone-divider {
  position: relative;
  max-width: 240px;
  margin: 0 auto 1.25rem;
  text-align: center;
}

.dropzone-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background-color: var(--border-color);
}

.dropzone-divider span {
  position: relative;
  background-color: var(--bg-card-alt);
  padding: 0 0.85rem;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-subtle);
  letter-spacing: 0.05em;
}

.dropzone-formats {
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   8. ALERTS & NOTIFICATIONS
   -------------------------------------------------------------------------- */
.alert {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  margin-top: 1.25rem;
}

.alert-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.alert-error {
  background-color: var(--danger-light);
  color: var(--danger);
  border: 1px solid var(--danger-border);
}

.alert-warning {
  background-color: var(--warning-light);
  color: var(--warning);
  border: 1px solid var(--warning-border);
  margin-bottom: 1.25rem;
}

/* --------------------------------------------------------------------------
   9. LOADING & RENDERING PROGRESS
   -------------------------------------------------------------------------- */
.loading-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 3rem 2rem;
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.spinner-ring {
  display: inline-block;
  width: 50px;
  height: 50px;
  border: 3.5px solid var(--border-color);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.85s linear infinite;
  margin-bottom: 1.5rem;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.loading-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.loading-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.progress-bar-wrapper {
  display: flex;
  align-items: center;
  gap: 1rem;
  max-width: 420px;
  margin: 0 auto;
}

.progress-bar-track {
  flex: 1;
  height: 10px;
  background-color: var(--bg-card-alt);
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: var(--radius-full);
  transition: width 0.2s ease-out;
}

.progress-bar-success {
  background: linear-gradient(90deg, var(--primary), var(--success));
}

.progress-percent-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  min-width: 38px;
}

/* --------------------------------------------------------------------------
   10. SUCCESS BANNER
   -------------------------------------------------------------------------- */
.success-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--success-light);
  border: 1.5px solid var(--success-border);
  border-radius: var(--radius-lg);
  padding: 1.15rem 1.5rem;
  margin: 1.5rem auto 0;
  max-width: 1200px;
  gap: 1rem;
}

.success-banner-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.success-icon-wrap {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--success);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.success-icon-wrap svg {
  width: 22px;
  height: 22px;
}

.success-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
}

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

/* --------------------------------------------------------------------------
   11. ACTIVE WORKSPACE & FILE SUMMARY
   -------------------------------------------------------------------------- */
.file-summary-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.file-summary-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.pdf-icon-badge {
  width: 44px;
  height: 44px;
  background-color: var(--danger-light);
  color: var(--danger);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.pdf-icon-badge svg {
  width: 26px;
  height: 26px;
}

.file-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  word-break: break-all;
}

.file-meta-tags {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.25rem;
  flex-wrap: wrap;
}

.file-meta-tag {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-card-alt);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.tag-pages {
  background-color: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary-border);
}

.tag-selected {
  background-color: var(--success-light);
  color: var(--success);
  border-color: var(--success-border);
}

.file-summary-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   12. SETTINGS PANEL
   -------------------------------------------------------------------------- */
.settings-panel {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
}

.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.6fr;
  gap: 1.5rem;
  align-items: flex-start;
}

.setting-item {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.setting-label {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-main);
}

.setting-hint {
  font-size: 0.74rem;
  font-weight: 500;
  color: var(--text-muted);
}

.form-select,
.form-input {
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-card-alt);
  color: var(--text-main);
  outline: none;
  transition: all var(--transition-fast);
}

.form-select:focus,
.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18);
}

/* Checkbox Toggle */
.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  cursor: pointer;
  user-select: none;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.4rem;
}

.checkbox-label input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.checkbox-custom {
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--border-hover);
  border-radius: 4px;
  background-color: var(--bg-card-alt);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
  background-color: var(--primary);
  border-color: var(--primary);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
  content: '';
  width: 5px;
  height: 9px;
  border: solid #ffffff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) translate(-0.5px, -1px);
}

.checkbox-label input[type="checkbox"]:indeterminate + .checkbox-custom {
  background-color: var(--primary);
  border-color: var(--primary);
}

.checkbox-label input[type="checkbox"]:indeterminate + .checkbox-custom::after {
  content: '';
  width: 8px;
  height: 2px;
  background-color: #ffffff;
}

/* --------------------------------------------------------------------------
   13. WORKSPACE TOOLBAR & ZIP ACTIONS
   -------------------------------------------------------------------------- */
.workspace-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.toolbar-divider {
  color: var(--border-color);
}

.selected-status {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.zip-progress-bar-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
}

.zip-progress-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

/* --------------------------------------------------------------------------
   14. PAGE PREVIEWS GRID & CARDS
   -------------------------------------------------------------------------- */
.pages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

.page-card {
  background-color: var(--bg-card);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
}

.page-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.page-card.selected {
  border-color: var(--primary);
  background-color: var(--bg-card);
}

.page-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background-color: var(--bg-card-alt);
  border-bottom: 1px solid var(--border-color);
}

.page-badge {
  font-size: 0.82rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  background-color: var(--primary-light);
  color: var(--primary);
}

/* Canvas thumbnail container */
.page-thumbnail-box {
  padding: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #0b1120;
  min-height: 220px;
  flex: 1;
}

[data-theme="light"] .page-thumbnail-box {
  background-color: #e2e8f0;
}

.page-thumbnail-canvas {
  max-width: 100%;
  max-height: 280px;
  width: auto;
  height: auto;
  display: block;
  background-color: #ffffff;
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.page-card-footer {
  padding: 0.85rem 1rem;
  background-color: var(--bg-card);
  border-top: 1px solid var(--border-color);
}

.btn-download-page {
  width: 100%;
}

/* --------------------------------------------------------------------------
   15. BOTTOM FLOATING ACTION BAR
   -------------------------------------------------------------------------- */
.bottom-action-bar {
  margin-top: 2rem;
  padding: 1.25rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.bottom-action-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.bottom-selection-info {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
}

/* --------------------------------------------------------------------------
   16. SEO CONTENT & HIGHLIGHTS
   -------------------------------------------------------------------------- */
.seo-content-section {
  border-top: 1px solid var(--border-color);
  padding-top: 3.5rem;
}

.seo-text-block {
  max-width: 900px;
  margin: 0 auto 3rem;
  text-align: center;
}

.seo-heading {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 1rem;
}

.seo-paragraph {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.feature-highlights-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 3.5rem;
}

.feature-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.25rem;
  text-align: center;
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}

.feature-icon svg {
  width: 22px;
  height: 22px;
}

.feature-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.feature-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Guide Steps */
.guide-section-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem;
  margin-bottom: 3.5rem;
}

.guide-heading {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-main);
  text-align: center;
  margin-bottom: 2rem;
}

.guide-steps-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.25rem;
}

.step-card {
  text-align: center;
}

.step-badge {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 0.85rem;
}

.step-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.step-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* --------------------------------------------------------------------------
   17. FAQ ACCORDION
   -------------------------------------------------------------------------- */
.faq-section-box {
  max-width: 900px;
  margin: 0 auto 3.5rem;
}

.faq-heading {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-main);
  text-align: center;
  margin-bottom: 1.75rem;
}

.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 1.5rem;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-main);
  text-align: left;
  transition: background-color var(--transition-fast);
}

.faq-question:hover {
  background-color: var(--bg-card-alt);
}

.faq-icon {
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-card-alt);
}

.faq-content {
  padding: 1.15rem 1.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   18. DISCLAIMER CARD
   -------------------------------------------------------------------------- */
.disclaimer-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  max-width: 900px;
  margin: 0 auto;
}

.disclaimer-icon {
  width: 22px;
  height: 22px;
  color: var(--text-muted);
  flex-shrink: 0;
  margin-top: 2px;
}

.disclaimer-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   19. SITE FOOTER
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: #050811;
  border-top: 1px solid var(--border-color);
  padding: 3.5rem 0 2rem;
  margin-top: auto;
}

[data-theme="light"] .site-footer {
  background-color: #f1f5f9;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-logo {
  margin-bottom: 0.85rem;
}

.footer-tagline {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1.25rem;
  max-width: 320px;
}

.footer-brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.74rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  background-color: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-border);
}

.footer-heading {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  font-size: 0.86rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-subtle);
}

/* --------------------------------------------------------------------------
   20. RESPONSIVE BREAKPOINTS
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .desktop-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .settings-grid {
    grid-template-columns: 1fr 1fr;
  }

  .setting-filename {
    grid-column: span 2;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 1.95rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .upload-card {
    padding: 1.5rem 1rem;
  }

  .upload-dropzone {
    padding: 2rem 1rem;
  }

  .settings-grid {
    grid-template-columns: 1fr;
  }

  .setting-filename {
    grid-column: auto;
  }

  .workspace-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }

  .toolbar-right .btn {
    width: 100%;
  }

  .pages-grid {
    grid-template-columns: 1fr;
  }

  .file-summary-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .file-summary-actions {
    justify-content: stretch;
  }

  .file-summary-actions .btn {
    flex: 1;
  }

  .feature-highlights-grid {
    grid-template-columns: 1fr;
  }

  .guide-steps-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 480px) {
  .hero-badges-wrapper {
    flex-direction: column;
    align-items: center;
  }
}