/* MulVidya AI Official Terms of Service Viewer Styles */
:root {
  --tos-bg: #070b15;
  --tos-bg-deep: #04070e;
  --tos-panel: #0d1527;
  --tos-panel-elevated: #131d36;
  --tos-border: rgba(255, 255, 255, 0.08);
  --tos-border-hover: rgba(245, 158, 11, 0.35);
  --tos-gold: #f59e0b;
  --tos-gold-light: #fbbf24;
  --tos-gold-glow: rgba(245, 158, 11, 0.2);
  --tos-text: #f8fafc;
  --tos-text-muted: #94a3b8;
  --tos-text-subtle: #64748b;
  --tos-radius: 12px;
}

*, *::before, *::after {
  box-sizing: border-box;
}

body.tos-page {
  background-color: var(--tos-bg);
  color: var(--tos-text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Background ambiance */
.tos-ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.tos-glow-1 {
  position: absolute;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 500px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.09) 0%, rgba(7, 11, 21, 0) 70%);
  filter: blur(60px);
}

.tos-glow-2 {
  position: absolute;
  top: 40%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.05) 0%, rgba(7, 11, 21, 0) 70%);
  filter: blur(80px);
}

/* Document Hero */
.tos-hero {
  position: relative;
  z-index: 1;
  max-width: 1080px;
  margin: 0 auto;
  padding: 44px 20px 24px;
  text-align: center;
}

.tos-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: 9999px;
  color: var(--tos-gold-light);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.tos-badge-pill svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

.tos-hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.tos-hero-desc {
  max-width: 760px;
  margin: 0 auto 24px;
  color: var(--tos-text-muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

/* Metadata Bar */
.tos-meta-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 0 auto;
}

.tos-meta-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--tos-panel);
  border: 1px solid var(--tos-border);
  border-radius: 8px;
  font-size: 0.8rem;
  color: var(--tos-text-muted);
}

.tos-meta-tag strong {
  color: #ffffff;
  font-weight: 600;
}

.tos-meta-tag .tag-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

/* Sticky Toolbar */
.tos-toolbar-wrapper {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(7, 11, 21, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--tos-border);
  border-bottom: 1px solid var(--tos-border);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
}

/* Progress bar */
.tos-progress-track {
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.05);
}

.tos-progress-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #f59e0b, #fbbf24);
  transition: width 0.15s ease-out;
}

.tos-toolbar {
  max-width: 1100px;
  margin: 0 auto;
  padding: 10px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.tos-tool-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Buttons */
.tos-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 38px;
  padding: 0 14px;
  background: var(--tos-panel);
  border: 1px solid var(--tos-border);
  border-radius: 8px;
  color: var(--tos-text);
  font-size: 0.86rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.18s ease;
  user-select: none;
  white-space: nowrap;
}

.tos-btn:hover:not(:disabled) {
  background: var(--tos-panel-elevated);
  border-color: var(--tos-border-hover);
  color: #ffffff;
}

.tos-btn:active:not(:disabled) {
  transform: translateY(1px);
}

.tos-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.tos-btn-icon {
  width: 38px;
  height: 38px;
  padding: 0;
  flex-shrink: 0;
}

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

.tos-btn-accent {
  background: rgba(245, 158, 11, 0.12);
  border-color: rgba(245, 158, 11, 0.35);
  color: var(--tos-gold-light);
}

.tos-btn-accent:hover:not(:disabled) {
  background: rgba(245, 158, 11, 0.22);
  border-color: var(--tos-gold);
}

/* Page Indicator */
.tos-page-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--tos-panel);
  border: 1px solid var(--tos-border);
  height: 38px;
  padding: 0 12px;
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--tos-text-muted);
}

.tos-page-input {
  width: 44px;
  height: 26px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--tos-border);
  border-radius: 5px;
  color: #ffffff;
  text-align: center;
  font-size: 0.86rem;
  font-weight: 600;
  padding: 0 4px;
}

.tos-page-input:focus {
  outline: none;
  border-color: var(--tos-gold);
  box-shadow: 0 0 0 2px var(--tos-gold-glow);
}

/* Zoom Level label */
.tos-zoom-badge {
  display: inline-block;
  min-width: 48px;
  text-align: center;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--tos-text);
}

/* Document Viewport & Pages */
.tos-viewport-wrapper {
  position: relative;
  z-index: 1;
  flex: 1;
  padding: 24px 16px 64px;
  display: flex;
  justify-content: center;
  min-height: 400px;
}

.tos-document-container {
  width: 100%;
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  transition: max-width 0.2s ease-out;
}

/* Loading Overlay */
.tos-loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 60px 20px;
  color: var(--tos-text-muted);
  width: 100%;
}

.tos-spinner {
  width: 44px;
  height: 44px;
  border: 3px solid rgba(245, 158, 11, 0.2);
  border-top-color: var(--tos-gold);
  border-radius: 50%;
  animation: tosSpin 0.8s linear infinite;
}

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

/* Individual Page Card */
.tos-page-card {
  position: relative;
  width: 100%;
  background: #ffffff;
  border-radius: 8px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5), 0 1px 4px rgba(0, 0, 0, 0.25);
  overflow: hidden;
  box-sizing: border-box;
  user-select: none;
  -webkit-user-select: none;
}

.tos-page-card-header {
  position: absolute;
  top: 10px;
  right: 14px;
  z-index: 10;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(15, 23, 42, 0.88);
  color: #f1f5f9;
  padding: 3px 8px;
  border-radius: 4px;
  pointer-events: none;
  backdrop-filter: blur(4px);
}

.tos-page-canvas-wrap {
  position: relative;
  width: 100%;
  display: block;
  background-color: #ffffff;
}

.tos-page-skeleton {
  width: 100%;
  background: #ffffff;
  padding-bottom: 141.42%; /* standard A4 aspect ratio 1:1.4142 */
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.tos-page-skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(240,240,240,0.6) 0%, rgba(224,224,224,0.9) 50%, rgba(240,240,240,0.6) 100%);
  background-size: 200% 100%;
  animation: tosShimmer 1.5s infinite;
}

@keyframes tosShimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.tos-page-canvas {
  display: block;
  width: 100% !important;
  height: auto !important;
  pointer-events: none;
  background-color: #ffffff;
}

/* End of Document Section */
.tos-end-card {
  width: 100%;
  max-width: 880px;
  margin: 32px auto 0;
  padding: 36px 24px;
  background: var(--tos-panel);
  border: 1px solid var(--tos-border);
  border-radius: var(--tos-radius);
  text-align: center;
}

.tos-end-icon {
  width: 50px;
  height: 50px;
  margin: 0 auto 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 50%;
  color: #10b981;
}

.tos-end-icon svg {
  width: 26px;
  height: 26px;
}

.tos-end-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 8px;
}

.tos-end-text {
  color: var(--tos-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 620px;
  margin: 0 auto 24px;
}

.tos-end-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Toast alert */
.tos-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: #111a30;
  border: 1px solid rgba(245, 158, 11, 0.5);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  color: #ffffff;
  padding: 12px 22px;
  border-radius: 9999px;
  font-size: 0.88rem;
  font-weight: 500;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 10px;
  pointer-events: none;
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
}

.tos-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Fullscreen mode adjustments */
:fullscreen .tos-viewport-wrapper,
:-webkit-full-screen .tos-viewport-wrapper {
  background-color: var(--tos-bg-deep);
  padding-top: 16px;
}

/* Print security guard: prevent browser print dialog capture */
@media print {
  body {
    display: none !important;
  }
}

/* Responsive UI: Mobile & Tablet */
@media (max-width: 768px) {
  .tos-hero {
    padding: 24px 16px 16px;
  }
  .tos-hero h1 {
    font-size: 1.75rem;
  }
  .tos-hero-desc {
    font-size: 0.92rem;
    margin-bottom: 16px;
  }
  .tos-meta-grid {
    gap: 6px;
  }
  .tos-meta-tag {
    font-size: 0.74rem;
    padding: 4px 10px;
  }

  .tos-toolbar {
    padding: 8px 12px;
    gap: 8px;
    flex-direction: column;
    align-items: stretch;
  }
  .tos-tool-group {
    justify-content: center;
    width: 100%;
  }
  .tos-tool-group:first-child {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 6px;
  }

  .tos-btn {
    height: 36px;
    padding: 0 10px;
    font-size: 0.82rem;
  }
  .tos-btn-icon {
    width: 36px;
    height: 36px;
  }
  .tos-btn span.tos-btn-label {
    display: none;
  }
  .tos-page-indicator {
    height: 36px;
    padding: 0 8px;
    font-size: 0.8rem;
  }
  .tos-page-input {
    width: 38px;
    height: 24px;
    font-size: 0.82rem;
  }

  .tos-viewport-wrapper {
    padding: 12px 6px 40px;
  }
  .tos-document-container {
    gap: 14px;
  }
  .tos-page-card {
    border-radius: 6px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  }
  .tos-page-card-header {
    top: 6px;
    right: 8px;
    font-size: 0.62rem;
    padding: 2px 6px;
  }
}