/* ============================================================
   SATURN V: Terminal viewport, animation, and showcase layout
   A CRT-terminal exhibition space for ASCII rendering projects.
   ============================================================ */

/* ---- Project description text ---- */
.project-desc {
  font-family: 'VT323', monospace;
  font-size: 1.2rem;
  color: var(--color-dim);
  line-height: 1.7;
  margin-bottom: 1.25rem;
  max-width: 680px;
}

.project-desc a {
  color: var(--color-accent-amber);
}

/* ---- Showcase sections ---- */
.showcase-section {
  min-height: calc(100vh - 3.5rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-bottom: 0;
}

.showcase-section + .showcase-section {
  margin-top: 1rem;
}

.section-label {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.5rem;
  color: var(--color-accent-cyan);
  letter-spacing: 3px;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  opacity: 0.7;
}

.section-divider {
  border: none;
  border-top: 1px solid var(--color-dim);
  margin: 4rem 0 2.5rem;
  position: relative;
}

/* Decorative notch on divider */
.section-divider::after {
  content: '\25C6';
  position: absolute;
  top: -0.5em;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-bg);
  padding: 0 1rem;
  color: var(--color-dim);
  font-size: 0.6rem;
}

/* ---- Terminal chrome ---- */
.terminal-area {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.terminal-chrome {
  /* Win95 raised window */
  border: 2px solid;
  border-color: var(--win-lighter) var(--win-darker) var(--win-darker) var(--win-lighter);
  box-shadow: inset 1px 1px 0 var(--win-light), inset -1px -1px 0 var(--win-dark);
  border-radius: 0;
  overflow: hidden;
  background: var(--win-face);
}

/* ---- Terminal viewport ---- */
.terminal-viewport {
  position: relative;
  overflow: hidden;
  background: #000;
  /* Win95 sunken content area */
  border: 2px solid;
  border-color: var(--win-dark) var(--win-light) var(--win-light) var(--win-dark);
  box-shadow: inset 1px 1px 0 var(--win-darker);
  margin: 2px;
}

.terminal-canvas {
  display: block;
  margin: 0 auto;
  background: #000;
}

/* ---- Overlays ---- */
.terminal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.88);
  z-index: 10;
}

.terminal-overlay.hidden {
  display: none;
}

.terminal-overlay--loading .overlay-text {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.65rem;
  color: var(--color-accent-cyan);
  animation: blink-text 1s step-end infinite;
}

@keyframes blink-text {
  50% { opacity: 0; }
}

/* ---- Launch button (Win95 raised) ---- */
.btn-play {
  font-family: Tahoma, 'Noto Sans Mono', sans-serif;
  font-size: 0.85rem;
  font-weight: bold;
  color: var(--color-primary);
  background: var(--win-face);
  border: 2px solid;
  border-color: var(--win-lighter) var(--win-darker) var(--win-darker) var(--win-lighter);
  box-shadow: inset 1px 1px 0 var(--win-light);
  padding: 0.6rem 2rem;
  cursor: pointer;
  letter-spacing: 1px;
  transition: background 0.1s;
}

.btn-play:hover {
  background: var(--win-light);
  color: #fff;
}

.btn-play:active {
  border-color: var(--win-darker) var(--win-lighter) var(--win-lighter) var(--win-darker);
  box-shadow: inset 1px 1px 0 var(--win-dark);
}

/* ---- Replay button (below terminal) ---- */
.btn-replay {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.5rem;
  color: var(--color-dim);
  border: 1px solid rgba(139, 94, 0, 0.3);
  background: transparent;
  padding: 0.4rem 1.2rem;
  cursor: pointer;
  letter-spacing: 1px;
  margin-top: 0.75rem;
  transition: color 0.15s, border-color 0.15s;
}

.btn-replay:hover {
  color: var(--color-accent-amber);
  border-color: var(--color-accent-amber);
}

.btn-replay.hidden {
  display: none;
}

/* ---- Status text ---- */
.status-text {
  font-family: 'VT323', monospace;
  font-size: 1rem;
  color: var(--color-dim);
  margin-top: 0.75rem;
  min-height: 1.2em;
}

/* ---- Video playback controls ---- */
.vid-controls {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  background: #080808;
  border-top: 1px solid rgba(139, 94, 0, 0.15);
}

.vid-controls.visible {
  display: flex;
}

.vid-playpause {
  font-size: 0.9rem;
  background: none;
  border: 1px solid rgba(139, 94, 0, 0.3);
  color: var(--color-primary);
  width: 28px;
  height: 28px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  flex-shrink: 0;
  transition: border-color 0.15s, color 0.15s;
}

.vid-playpause:hover {
  border-color: var(--color-accent-amber);
  color: var(--color-accent-amber);
}

.vid-time {
  font-family: 'VT323', monospace;
  font-size: 0.9rem;
  color: var(--color-dim);
  min-width: 36px;
  text-align: center;
  flex-shrink: 0;
}

.vid-scrubber {
  flex: 1;
  height: 3px;
  -webkit-appearance: none;
  appearance: none;
  background: #222;
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.vid-scrubber::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  transition: background 0.15s;
}

.vid-scrubber::-webkit-slider-thumb:hover {
  background: var(--color-accent-amber);
}

.vid-scrubber::-moz-range-thumb {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
  border: none;
  cursor: pointer;
}

.vid-scrubber::-webkit-slider-runnable-track {
  height: 3px;
  border-radius: 2px;
}

.vid-scrubber::-moz-range-track {
  height: 3px;
  border-radius: 2px;
  background: #222;
}

/* ---- Quality selector ---- */
.controls-panel {
  margin-top: 1rem;
}

.control-section {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.control-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.control-label {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.45rem;
  color: var(--color-dim);
  letter-spacing: 1px;
}

.control-input {
  font-family: 'VT323', monospace;
  font-size: 1rem;
  color: var(--color-primary);
  background: #0a0a0a;
  border: 1px solid rgba(139, 94, 0, 0.3);
  padding: 0.25rem 0.5rem;
  border-radius: 3px;
}

.control-input:focus {
  outline: 1px solid var(--color-primary);
}

/* ============================================================
   SECTION 3: HOW IT WORKS -- Technical diagrams
   ============================================================ */

.tech-citation {
  font-family: 'VT323', monospace;
  font-size: 1.1rem;
  color: var(--color-dim);
  line-height: 1.6;
  margin-bottom: 2.5rem;
}

.tech-citation a {
  color: var(--color-accent-amber);
}

.tech-citation--footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(139, 94, 0, 0.2);
}

/* Each step: heading + diagram/text row */
.tech-step {
  margin-bottom: 3rem;
}

.tech-step h4 {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.55rem;
  color: var(--color-accent-cyan);
  letter-spacing: 2px;
  margin-bottom: 1.25rem;
  opacity: 0.8;
}

.tech-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

.tech-diagram {
  display: flex;
  justify-content: center;
}

.diagram-svg {
  width: 100%;
  max-width: 220px;
  height: auto;
}

.diagram-svg.diagram-wide {
  max-width: 100%;
}

.tech-text {
  font-family: 'VT323', monospace;
  font-size: 1.1rem;
  color: var(--color-dim);
  line-height: 1.65;
}

.tech-text p {
  margin-bottom: 0.75rem;
}

.tech-text a {
  color: var(--color-accent-amber);
}

.tech-vector {
  font-family: 'Courier New', monospace;
  font-size: 1rem;
  color: var(--color-accent-cyan);
  padding: 0.25rem 0;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .terminal-area {
    padding: 0 0.5rem;
  }

  .btn-play {
    font-size: 0.6rem;
    padding: 0.7rem 1.5rem;
  }

  .tech-row {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .diagram-svg {
    max-width: 180px;
  }

  .diagram-svg.diagram-wide {
    max-width: 400px;
  }

  .section-divider {
    margin: 3rem 0 2rem;
  }
}

@media (max-width: 480px) {
  .terminal-viewport {
    min-height: 200px;
  }

  .project-desc {
    font-size: 1.05rem;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .terminal-overlay--loading .overlay-text {
    animation: none;
  }
}