/* ==========================================================================
   VIDSYNTH — DESIGN SYSTEM & CINEMATIC DARKROOM ARCHITECTURE
   Direction: Cinematic Darkroom × Premium Creative Software × Enterprise SaaS
   ========================================================================== */

:root {
  /* Core Brand Color Tokens */
  --bg-obsidian: #040407;
  --bg-deep: #08080C;
  --bg-elevated: #101117;
  --bg-elevated-hover: #151720;
  --border-titanium: #252832;
  --border-subtle: #191B24;
  --accent-cyan: #00F0FF;
  --accent-cyan-dim: rgba(0, 240, 255, 0.12);
  --accent-cyan-border: rgba(0, 240, 255, 0.42);
  --accent-violet: #7161FF;
  --accent-violet-dim: rgba(113, 97, 255, 0.14);
  --text-primary: #F5F6FA;
  --text-secondary: #9296A3;
  --text-muted: #626775;

  /* Semantic Status Tokens */
  --status-success: #10B981;
  --status-warning: #F59E0B;
  --status-danger: #EF4444;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Layout & Precision Radii */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --container-max: 1360px;
  --header-height: 64px;
}

/* Base Reset & Accessibility */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  background-color: var(--bg-obsidian);
  color: var(--text-primary);
  font-family: var(--font-sans);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color-scheme: dark;
}

body {
  margin: 0;
  background-color: var(--bg-obsidian);
  color: var(--text-primary);
  line-height: 1.55;
  overflow-x: hidden;
  selection-background-color: var(--accent-cyan);
}

::selection {
  background: rgba(0, 240, 255, 0.22);
  color: var(--text-primary);
}

/* Focus Visible Compliance (WCAG 2.2 AA) */
:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 2px;
}

/* Skip to Content Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 9999;
  background: var(--accent-cyan);
  color: var(--bg-obsidian);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  text-decoration: none;
}
.skip-link:focus {
  top: 12px;
}

/* Typography Hierarchy */
.font-mono-tech {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.eyebrow-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 4px 10px;
  background: var(--bg-deep);
  border: 1px solid var(--border-titanium);
  border-radius: var(--radius-xs);
}

.eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  display: inline-block;
}

.eyebrow-dot.violet {
  background: var(--accent-violet);
}

.eyebrow-dot.amber {
  background: var(--status-warning);
}

/* Structural Darkroom Surfaces */
.surface-obsidian {
  background-color: var(--bg-obsidian);
}

.surface-deep {
  background-color: var(--bg-deep);
}

.surface-elevated {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-titanium);
  border-radius: var(--radius-sm);
}

/* Architectural Technical Grid Background (Subtle, Non-Gimmicky) */
.darkroom-grid-bg {
  background-image:
    linear-gradient(to right, rgba(37, 40, 50, 0.24) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(37, 40, 50, 0.24) 1px, transparent 1px);
  background-size: 64px 64px;
}

/* Corner Reticle Marks for Technical Viewports */
.reticle-frame {
  position: relative;
}
.reticle-frame::before,
.reticle-frame::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  pointer-events: none;
  z-index: 10;
}
.reticle-frame::before {
  top: -1px;
  left: -1px;
  border-top: 2px solid var(--accent-cyan);
  border-left: 2px solid var(--accent-cyan);
}
.reticle-frame::after {
  bottom: -1px;
  right: -1px;
  border-bottom: 2px solid var(--accent-cyan);
  border-right: 2px solid var(--accent-cyan);
}

/* Buttons — Restrained Precision */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--accent-cyan);
  color: var(--bg-obsidian);
  font-weight: 600;
  font-size: 0.875rem;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--accent-cyan);
  transition: background-color 150ms ease, transform 120ms ease, box-shadow 150ms ease;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary:hover {
  background-color: #26F3FF;
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.22);
}
.btn-primary:active {
  transform: translateY(1px);
}
.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--bg-elevated);
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.875rem;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-titanium);
  transition: border-color 150ms ease, background-color 150ms ease, color 150ms ease;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}
.btn-secondary:hover {
  background-color: var(--bg-elevated-hover);
  border-color: #3E4354;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.84rem;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: color 150ms ease, background-color 150ms ease, border-color 150ms ease;
  cursor: pointer;
  text-decoration: none;
}
.btn-ghost:hover {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.03);
  border-color: var(--border-titanium);
}

/* Interactive Comparison Studio Viewport */
.comparison-viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: var(--bg-deep);
  border: 1px solid var(--border-titanium);
  border-radius: var(--radius-sm);
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  touch-action: pan-y;
}

.comparison-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.comparison-layer video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Left layer is clipped dynamically from 0% to slider% */
.comparison-layer-before {
  z-index: 2;
  clip-path: inset(0 50% 0 0);
}

.comparison-layer-after {
  z-index: 1;
}

/* Draggable Comparison Handle */
.comparison-divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background-color: var(--accent-cyan);
  z-index: 15;
  transform: translateX(-50%);
  cursor: ew-resize;
}

.comparison-handle-knob {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  background-color: var(--bg-obsidian);
  border: 1.5px solid var(--accent-cyan);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.75);
  transition: background-color 150ms ease, transform 150ms ease;
}

.comparison-divider:hover .comparison-handle-knob,
.comparison-divider:focus-visible .comparison-handle-knob {
  background-color: #0B161B;
  transform: translate(-50%, -50%) scale(1.06);
}

/* Render Pass Toggle Pills */
.pass-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  text-align: left;
  padding: 11px 14px;
  background-color: var(--bg-deep);
  border: 1px solid var(--border-titanium);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 140ms ease;
}

.pass-toggle-btn:hover {
  border-color: #383D4E;
  color: var(--text-primary);
  background-color: var(--bg-elevated);
}

.pass-toggle-btn.active {
  background-color: rgba(0, 240, 255, 0.07);
  border-color: var(--accent-cyan);
  color: var(--text-primary);
}

.pass-toggle-btn.active .pass-indicator {
  background-color: var(--accent-cyan);
  box-shadow: 0 0 8px rgba(0, 240, 255, 0.6);
}

.pass-indicator {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--border-titanium);
  flex-shrink: 0;
}

/* Director Motion Rig Cards */
.motion-preset-btn {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background-color: var(--bg-deep);
  border: 1px solid var(--border-titanium);
  border-radius: var(--radius-sm);
  text-align: left;
  cursor: pointer;
  transition: border-color 140ms ease, background-color 140ms ease;
}

.motion-preset-btn:hover {
  background-color: var(--bg-elevated);
  border-color: #3A3F50;
}

.motion-preset-btn.active {
  background-color: var(--bg-elevated);
  border-color: var(--accent-cyan);
  box-shadow: inset 2px 0 0 var(--accent-cyan);
}

/* Asymmetric Bento Showcase Grid */
.bento-showcase-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 16px;
}

.bento-item-featured {
  grid-column: span 8;
  grid-row: span 2;
}
.bento-item-med-1 {
  grid-column: span 4;
}
.bento-item-med-2 {
  grid-column: span 4;
}
.bento-item-narrow {
  grid-column: span 4;
}
.bento-item-wide {
  grid-column: span 5;
}
.bento-item-spec {
  grid-column: span 3;
}

@media (max-width: 1100px) {
  .bento-item-featured {
    grid-column: span 12;
    grid-row: span 1;
  }
  .bento-item-med-1,
  .bento-item-med-2,
  .bento-item-narrow {
    grid-column: span 6;
  }
  .bento-item-wide {
    grid-column: span 6;
  }
  .bento-item-spec {
    grid-column: span 12;
  }
}

@media (max-width: 767px) {
  .bento-showcase-grid {
    grid-template-columns: 1fr;
  }
  .bento-item-featured,
  .bento-item-med-1,
  .bento-item-med-2,
  .bento-item-narrow,
  .bento-item-wide,
  .bento-item-spec {
    grid-column: span 1;
  }
}

.showcase-card {
  position: relative;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-titanium);
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 160ms ease;
}

.showcase-card:hover {
  border-color: #3E4456;
}

/* Form Controls */
.input-field {
  width: 100%;
  background-color: var(--bg-deep);
  border: 1px solid var(--border-titanium);
  border-radius: var(--radius-sm);
  padding: 10px 13px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  transition: border-color 140ms ease;
}
.input-field::placeholder {
  color: var(--text-muted);
}
.input-field:focus {
  outline: none;
  border-color: var(--accent-cyan);
}
.input-field.input-error {
  border-color: var(--status-danger);
}

/* Dashboard Sidebar Navigation */
.dash-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.84rem;
  font-weight: 500;
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  text-align: left;
  transition: all 120ms ease;
}
.dash-nav-item:hover {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.03);
}
.dash-nav-item.active {
  color: var(--text-primary);
  background-color: var(--bg-elevated);
  border-color: var(--border-titanium);
  box-shadow: inset 2px 0 0 var(--accent-cyan);
}

/* Modal Backdrop & Container */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(4, 4, 7, 0.82);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-panel {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-titanium);
  border-radius: var(--radius-sm);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.7);
}

/* Custom Range Input (Video Scrubber) */
input[type="range"].studio-scrubber {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 5px;
  background: var(--border-titanium);
  border-radius: 2px;
  cursor: pointer;
}
input[type="range"].studio-scrubber::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 2px;
  background: var(--accent-cyan);
  cursor: pointer;
}
input[type="range"].studio-scrubber::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  background: var(--accent-cyan);
  border: none;
  cursor: pointer;
}

/* Reduced Motion Respect */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}