/* ============================================
   TrackPDF — CSS
   Inspired by WeTransfer: bold, minimal, premium
   ============================================ */

/* --- Variables --- */
:root {
  /* Colors */
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --bg-card: #141414;
  --bg-hover: #1e1e1e;
  --bg-input: #0f0f0f;

  --text-primary: #f5f5f5;
  --text-secondary: #a0a0a0;
  --text-tertiary: #666666;
  --text-inverse: #0a0a0a;

  --accent: #2563eb;
  --accent-hover: #3b82f6;
  --accent-subtle: rgba(37, 99, 235, 0.12);
  --accent-glow: rgba(37, 99, 235, 0.25);

  --success: #22c55e;
  --success-subtle: rgba(34, 197, 94, 0.12);
  --warning: #eab308;
  --warning-subtle: rgba(234, 179, 8, 0.12);
  --danger: #ef4444;
  --danger-subtle: rgba(239, 68, 68, 0.12);

  --border: #222222;
  --border-light: #2a2a2a;
  --border-focus: #2563eb;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", SFMono-Regular, ui-monospace, Menlo, monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;

  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.5;
  --leading-relaxed: 1.65;

  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

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

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px var(--accent-glow);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
}

/* --- Reset --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: var(--leading-normal);
  min-height: 100vh;
}

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

img, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

ul, ol { list-style: none; }

/* --- Utility --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-narrow {
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.text-center { text-align: center; }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-accent { color: var(--accent); }
.text-sm { font-size: var(--text-sm); }
.text-xs { font-size: var(--text-xs); }
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.hidden { display: none !important; }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  font-weight: 600;
}

.headline-xl {
  font-size: clamp(2.5rem, 6vw, var(--text-7xl));
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.05;
}

.headline-lg {
  font-size: clamp(1.75rem, 4vw, var(--text-5xl));
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.headline-md {
  font-size: var(--text-2xl);
  font-weight: 600;
}

.headline-sm {
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
}

.mb-3 {
  margin-bottom: var(--space-3);
}

.subtitle {
  font-size: clamp(var(--text-lg), 2vw, var(--text-xl));
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  font-weight: 400;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

/* --- Navigation --- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.nav-logo {
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.nav-logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
  font-weight: 500;
}

.nav-link:hover {
  color: var(--text-primary);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.65em 1.4em;
  font-size: var(--text-sm);
  font-weight: 550;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
  user-select: none;
  outline: none;
}

.btn:focus-visible {
  box-shadow: 0 0 0 2px var(--bg-primary), 0 0 0 4px var(--accent);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: translateY(0);
}

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

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover {
  background: #dc2626;
}

.btn-lg {
  padding: 0.85em 2em;
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 0.4em 0.9em;
  font-size: var(--text-xs);
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* --- Form Inputs --- */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.form-input {
  width: 100%;
  padding: 0.7em 0.9em;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--text-base);
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
  outline: none;
}

.form-input::placeholder {
  color: var(--text-tertiary);
}

.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}

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

.form-hint {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-top: var(--space-1);
}

.form-error {
  font-size: var(--text-xs);
  color: var(--danger);
  margin-top: var(--space-1);
}

/* Toggle switch */
.toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.toggle input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-track {
  width: 40px;
  height: 22px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  transition: all var(--duration-normal) var(--ease-out);
  flex-shrink: 0;
}

.toggle-track::after {
  content: "";
  display: block;
  width: 16px;
  height: 16px;
  margin: 2px;
  background: var(--text-secondary);
  border-radius: 50%;
  transition: all var(--duration-normal) var(--ease-out);
}

.toggle input:checked + .toggle-track {
  background: var(--accent);
  border-color: var(--accent);
}

.toggle input:checked + .toggle-track::after {
  transform: translateX(18px);
  background: #fff;
}

/* --- Cards --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: border-color var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.card-elevated {
  box-shadow: var(--shadow-md);
}

/* --- Upload Area --- */
.upload-zone {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 380px;
  border: 2px dashed var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--space-12);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  text-align: center;
  overflow: hidden;
}

.upload-zone::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, var(--accent-subtle) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease-out);
  pointer-events: none;
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--accent);
  background: rgba(37, 99, 235, 0.03);
}

.upload-zone:hover::before,
.upload-zone.drag-over::before {
  opacity: 1;
}

.upload-zone.drag-over {
  transform: scale(1.01);
  box-shadow: var(--shadow-glow);
}

.upload-icon {
  position: relative;
  width: 72px;
  height: 72px;
  margin-bottom: var(--space-6);
  margin-left: auto;
  margin-right: auto;
  display: block;
  color: var(--text-tertiary);
  transition: color var(--duration-normal) var(--ease-out),
              transform var(--duration-normal) var(--ease-out);
  flex-shrink: 0;
}

.upload-zone:hover .upload-icon,
.upload-zone.drag-over .upload-icon {
  color: var(--accent);
  transform: translateY(-4px);
}

.upload-title {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-2);
  position: relative;
}

.upload-subtitle {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  position: relative;
}

.upload-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

/* Upload progress */
.upload-progress {
  width: 100%;
  max-width: 400px;
  text-align: center;
}

.upload-progress .filename {
  font-weight: 500;
  margin-bottom: var(--space-4);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* --- Progress Bar --- */
.progress {
  width: 100%;
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--accent);
  border-radius: var(--radius-full);
  transition: width var(--duration-normal) var(--ease-out);
  position: relative;
}

.progress-bar::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  animation: progress-shimmer 1.5s infinite;
}

@keyframes progress-shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.progress-text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-top: var(--space-2);
}

.upload-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto var(--space-3);
}

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

/* --- Upload Result --- */
.upload-result {
  text-align: left;
}

.result-link-box {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-4);
}

.result-link-box input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  outline: none;
  min-width: 0;
}

.result-section {
  margin-bottom: var(--space-6);
}

.result-section h3 {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-3);
}

.admin-code {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: 0.15em;
  background: var(--bg-tertiary);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}


/* --- Stats Cards --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  font-weight: 500;
  margin-bottom: var(--space-1);
}

.stat-value {
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
}

.stat-change {
  font-size: var(--text-xs);
  margin-top: var(--space-1);
}

.stat-change.up { color: var(--success); }
.stat-change.down { color: var(--danger); }

/* --- Charts (CSS bar chart) --- */
.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
  height: 180px;
  padding-top: var(--space-4);
  border-bottom: 1px solid var(--border);
}

.bar-chart .bar {
  flex: 1;
  background: var(--accent);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  min-height: 4px;
  transition: height var(--duration-slow) var(--ease-out);
  position: relative;
  cursor: default;
}

.bar-chart .bar:hover {
  background: var(--accent-hover);
}

.bar-chart .bar-label {
  position: absolute;
  bottom: -24px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  color: var(--text-tertiary);
  white-space: nowrap;
}

.bar-chart .bar-value {
  position: absolute;
  top: -22px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  opacity: 0;
  transition: opacity var(--duration-fast);
}

.bar-chart .bar:hover .bar-value {
  opacity: 1;
}

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

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

.table th {
  text-align: left;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  font-size: var(--text-sm);
  vertical-align: middle;
}

.table tr:last-child td {
  border-bottom: none;
}

.table tbody tr {
  transition: background var(--duration-fast);
}

.table tbody tr:hover {
  background: var(--bg-hover);
}

/* --- Modal / Dialog --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-6);
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px) scale(0.97);
  transition: transform var(--duration-normal) var(--ease-out);
  box-shadow: var(--shadow-lg);
}

.modal-overlay.active .modal {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast);
}

.modal-close:hover {
  color: var(--text-primary);
}

/* --- Toast Notifications --- */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}

.toast {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  transform: translateX(120%);
  opacity: 0;
  transition: all var(--duration-normal) var(--ease-out);
  max-width: 360px;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.toast.show {
  transform: translateX(0);
  opacity: 1;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.info { border-left: 3px solid var(--accent); }
.toast.warning { border-left: 3px solid var(--warning); }

.toast-icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
}

/* --- PDF Viewer --- */
.viewer-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg-primary);
}

.viewer-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-6);
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
  gap: var(--space-4);
  flex-wrap: nowrap;
}

.viewer-title {
  font-size: var(--text-sm);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
  flex: 1;
}

.viewer-nav {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.viewer-nav .page-info {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
  min-width: 80px;
  text-align: center;
}

.viewer-canvas-wrap {
  flex: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: var(--space-6);
  overflow: auto;
}

.viewer-canvas-wrap canvas {
  max-width: 100%;
  height: auto;
  box-shadow: var(--shadow-lg);
  border-radius: 2px;
}

/* Email gate overlay */
.gate-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: var(--space-6);
}

.gate-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  max-width: 420px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.gate-card h2 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2);
}

.gate-card p {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  margin-bottom: var(--space-6);
}

/* --- Pricing Cards --- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  align-items: start;
  padding-top: var(--space-4);
}

.pricing-grid > * {
  height: 100%;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  position: relative;
  display: flex;
  flex-direction: column;
  margin-top: 0;
  transition: border-color var(--duration-normal) var(--ease-out),
              transform var(--duration-normal) var(--ease-out);
}

.pricing-card.featured {
  margin-top: 0;
}

.pricing-card:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
}

.pricing-card.featured {
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
}

.pricing-badge {
  position: absolute;
  top: calc(-1 * var(--space-3));
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.pricing-name {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.pricing-price {
  font-size: var(--text-4xl);
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-1);
}

.pricing-price span {
  font-size: var(--text-base);
  font-weight: 400;
  color: var(--text-tertiary);
}

.pricing-desc {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-bottom: var(--space-6);
}

.pricing-features {
  margin-bottom: var(--space-8);
  flex-grow: 1;
}

.pricing-features li {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  padding: var(--space-2) 0;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.pricing-features li::before {
  content: "";
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  background: var(--success-subtle);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2322c55e' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

/* --- Dashboard --- */
.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-6);
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-6);
  color: var(--text-tertiary);
  opacity: 0.5;
}

.empty-state h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

.empty-state p {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  margin-bottom: var(--space-6);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15em 0.6em;
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.badge-success {
  background: var(--success-subtle);
  color: var(--success);
}

.badge-accent {
  background: var(--accent-subtle);
  color: var(--accent);
}

/* --- Plan Banner --- */
.plan-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--accent-subtle);
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-6);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.plan-banner p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.plan-banner strong {
  color: var(--text-primary);
}

/* --- Auth Pages --- */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 64px);
  padding: var(--space-8) var(--space-6);
}

.auth-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-md);
}

.auth-card h1 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-1);
}

.auth-card .subtitle {
  font-size: var(--text-sm);
  margin-bottom: var(--space-8);
}

.auth-footer {
  text-align: center;
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

.auth-footer a {
  color: var(--accent);
  font-weight: 500;
}

.auth-footer a:hover {
  text-decoration: underline;
}

/* --- Footer --- */
.footer {
  border-top: 1px solid var(--border);
  padding: var(--space-10) 0;
  margin-top: var(--space-16);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-link {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  transition: color var(--duration-fast);
}

.footer-link:hover {
  color: var(--text-secondary);
}

.footer-copy {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

/* --- FAQ --- */
.faq-list {
  max-width: 680px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: var(--space-5) 0;
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}

.faq-question::after {
  content: "+";
  font-size: var(--text-xl);
  color: var(--text-tertiary);
  transition: transform var(--duration-normal) var(--ease-out);
  flex-shrink: 0;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-slow) var(--ease-out);
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

.faq-answer p {
  padding-bottom: var(--space-5);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* --- Settings Panel --- */
.settings-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--border);
  gap: var(--space-4);
}

.settings-row:last-child {
  border-bottom: none;
}

.settings-row-info h4 {
  font-size: var(--text-sm);
  font-weight: 500;
}

.settings-row-info p {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-top: 2px;
}

/* --- Loading Spinner --- */
.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border-light);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* --- Animations --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.animate-in {
  animation: fadeIn var(--duration-normal) var(--ease-out) both;
}

.animate-in-up {
  animation: fadeInUp var(--duration-slow) var(--ease-out) both;
}

.animate-scale-in {
  animation: scaleIn var(--duration-normal) var(--ease-out) both;
}

/* Staggered children */
.stagger > *:nth-child(1) { animation-delay: 0ms; }
.stagger > *:nth-child(2) { animation-delay: 60ms; }
.stagger > *:nth-child(3) { animation-delay: 120ms; }
.stagger > *:nth-child(4) { animation-delay: 180ms; }
.stagger > *:nth-child(5) { animation-delay: 240ms; }
.stagger > *:nth-child(6) { animation-delay: 300ms; }

/* --- Responsive --- */
@media (max-width: 768px) {
  .nav-link,
  .footer-link {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    padding: 12px 8px;
  }

  .nav-logo {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

  .demo-link {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    padding: 12px 0;
  }

  .nav-links {
    gap: var(--space-4);
  }

  .upload-zone {
    min-height: 280px;
    padding: var(--space-8);
  }

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

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }

  .dashboard-header {
    flex-direction: column;
    align-items: stretch;
  }

  .viewer-toolbar {
    padding: var(--space-2) var(--space-3);
    gap: var(--space-1);
    overflow: hidden;
    height: 48px;
    max-height: 48px;
  }

  .viewer-toolbar .viewer-title {
    max-width: 120px;
    font-size: 12px;
  }

  .viewer-toolbar .viewer-nav {
    gap: var(--space-1);
  }

  .viewer-toolbar .viewer-nav button:not([style*="display: none"]),
  .viewer-toolbar #btn-prev,
  .viewer-toolbar #btn-next,
  .viewer-toolbar #btn-download {
    min-width: 44px;
    min-height: 44px;
  }

  .viewer-toolbar .viewer-nav .page-info {
    font-size: 11px;
  }

  .viewer-toolbar #btn-zoom-in,
  .viewer-toolbar #btn-zoom-out {
    display: none !important;
  }

  .viewer-toolbar #btn-download span {
    display: none !important;
  }

  .viewer-toolbar #btn-analytics {
    display: none !important;
  }

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

  .toast-container {
    left: var(--space-4);
    right: var(--space-4);
    bottom: var(--space-4);
  }

  .toast {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .auth-card {
    padding: var(--space-6);
  }

  .headline-xl {
    font-size: 2.2rem;
  }

  .upload-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-4);
  }

  .result-section[style*="margin-bottom: 0"],
  .result-section {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
  }

  .result-section .btn {
    flex: 1 1 auto;
    text-align: center;
    margin-right: 0 !important;
  }
}

/* ============================================
   Polish & Animations
   ============================================ */

/* Upload success checkmark animation */
@keyframes checkmark-draw {
    0% { stroke-dashoffset: 30; }
    100% { stroke-dashoffset: 0; }
}

@keyframes success-pulse {
    0% { transform: scale(0.8); opacity: 0; }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
}

.upload-success-icon {
    animation: success-pulse 0.5s ease-out forwards;
}

.upload-success-icon path {
    stroke-dasharray: 30;
    stroke-dashoffset: 30;
    animation: checkmark-draw 0.4s ease-out 0.3s forwards;
}

/* Upload result entrance */
.upload-result {
    animation: slide-up-fade 0.5s ease-out;
}

@keyframes slide-up-fade {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Enhanced card hover */
.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

/* Stat card hover */
.stat-card {
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
}

/* Button loading state */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin: -8px 0 0 -8px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* spin keyframes defined above */


/* Mobile improvements for pricing */
@media (max-width: 768px) {
    .pricing-card {
        margin-bottom: var(--space-4);
    }

    .result-link-box {
        flex-direction: column;
    }

    .result-link-box input {
        font-size: var(--text-sm);
    }
}

/* empty-state defined above */

/* viewer-toolbar backdrop defined above */

/* Loading skeleton */
@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.skeleton {
    background: linear-gradient(90deg, var(--bg-card) 25%, rgba(255,255,255,0.05) 50%, var(--bg-card) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 4px;
}