/* ─────────────────────────────────────────────
   Filmstrip portfolio section (A2 "The Filmstrip")
   Extracted from docs/design/2026-06-21-shanku-portfolio/direction-a2.html
   Color/font values mapped to site tokens (css/tokens.css).
   Loaded after main.css so var(--*) resolve.
   ───────────────────────────────────────────── */

/* ---- FILMSTRIP SECTION ---- */
/* #work (the <section>) carries the standard `section` padding + header.
   .filmstrip-section is the inner stage holding the fixed-height scroll
   mechanics. NOTE: this class name is deliberately reused (not renamed) so
   browsers holding a cached older filmstrip.css still style the stage and
   keep the absolute progress-bar contained. */
#work .container { position: relative; z-index: 1; }

.filmstrip-section {
  position: relative;
  height: 80vh;
  min-height: 500px;
  background: var(--bg);
  overflow: hidden;
}

.filmstrip {
  display: flex;
  height: 100%;
  overflow-x: scroll;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  cursor: grab;
  padding-left: 8vw;
  padding-right: 8vw;
  padding-top: 32px;
  padding-bottom: 80px;
  gap: 28px;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
}
.filmstrip::-webkit-scrollbar { display: none; }
.filmstrip.is-dragging { cursor: grabbing; }
.filmstrip.is-dragging * { user-select: none; }

/* ---- CARD ---- */
.card {
  flex: 0 0 42vw;
  height: 100%;
  scroll-snap-align: center;
  position: relative;
  opacity: 0.65;
  filter: brightness(0.8);
  transition: opacity 0.3s ease, transform 0.3s ease, filter 0.3s ease;
  cursor: pointer;
}
.card:nth-child(odd)  { transform: perspective(900px) rotateY(-3deg) scale(0.97); }
.card:nth-child(even) { transform: perspective(900px) rotateY(3deg)  scale(0.97); }
.card.active {
  opacity: 1;
  filter: brightness(1);
}
.card.active:nth-child(odd)  { transform: perspective(900px) rotateY(-3deg) scale(1.02); }
.card.active:nth-child(even) { transform: perspective(900px) rotateY(3deg)  scale(1.02); }

.card-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* Browser chrome bar */
.chrome-bar {
  background: var(--card-bg);
  border: 1px solid var(--rule);
  border-bottom: none;
  border-radius: 8px 8px 0 0;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.chrome-dots {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}
.chrome-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red   { background: #FF5F57; }
.dot-yellow{ background: #FFBD2E; }
.dot-green { background: #28C840; }
.chrome-url {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  background: rgba(255,255,255,0.05);
  border-radius: 4px;
  padding: 3px 10px;
  flex: 1;
}

/* Screenshot area */
.card-screenshot {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: var(--card-bg);
  border: 1px solid var(--rule);
  border-top: none;
  border-radius: 0 0 8px 8px;
}
.card-screenshot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top left;
  display: block;
  transition: transform 0.4s ease;
}
.card:hover .card-screenshot img {
  transform: scale(1.03);
}

.loop-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  background: rgba(13,31,28,0.85);
  border: 1px solid rgba(194,138,5,0.35);
  padding: 3px 8px;
  border-radius: 3px;
  letter-spacing: 0.06em;
  backdrop-filter: blur(4px);
}

/* Card label below frame */
.card-label {
  padding: 14px 4px 0;
  flex-shrink: 0;
}
.card-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.card-name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.2;
}
.card-desc {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 3px;
}

/* ---- SCROLL HINT ARROW ---- */
.scroll-hint {
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  pointer-events: none;
  opacity: 1;
  transition: opacity 0.6s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.scroll-hint.hidden { opacity: 0; }
.scroll-hint-arrow {
  font-family: var(--font-mono);
  font-size: 28px;
  color: var(--accent);
  animation: bounce-x 1.4s ease-in-out infinite;
}
.scroll-hint-text {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  writing-mode: horizontal-tb;
}
@keyframes bounce-x {
  0%, 100% { transform: translateX(0); }
  50%       { transform: translateX(6px); }
}

/* ---- PROGRESS INDICATOR ---- */
.progress-bar {
  position: absolute;
  bottom: 20px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  z-index: 10;
  pointer-events: none;
}
.progress-counter {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.12em;
}
.progress-dots {
  display: flex;
  gap: 8px;
}
.progress-dot {
  width: 24px;
  height: 2px;
  background: var(--rule);
  border-radius: 2px;
  transition: background 0.3s ease, width 0.3s ease;
}
.progress-dot.active {
  background: var(--accent);
  width: 36px;
}

/* ---- RIGHT DRAWER ---- */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.drawer-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.drawer {
  position: fixed;
  right: 0;
  top: 0;
  bottom: 0;
  width: 75vw;
  max-width: 640px;
  background: var(--surface);
  border-left: 1px solid var(--rule);
  z-index: 201;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--rule) transparent;
}
.drawer.open { transform: translateX(0); }

.drawer-close {
  position: absolute;
  top: 16px;
  right: 20px;
  width: 32px;
  height: 32px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--rule);
  border-radius: 4px;
  color: var(--text-muted);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: background 0.2s ease, color 0.2s ease;
  line-height: 1;
}
.drawer-close:hover { background: rgba(255,255,255,0.12); color: var(--text); }

.drawer-hero-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.drawer-body {
  padding: 28px 32px 48px;
}

.drawer-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}
.drawer-name {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.15;
}
.drawer-url {
  display: inline-block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.04em;
}
.drawer-url:hover { text-decoration: underline; }

.drawer-tag {
  margin-top: 8px;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-muted);
}

.drawer-divider {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 24px 0;
}

.drawer-section { margin-bottom: 22px; }
.drawer-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.drawer-content {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}

.drawer-stack {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.7;
}
.drawer-stack-item {
  display: inline-block;
  margin-right: 8px;
  margin-bottom: 4px;
  background: var(--accent-subtle);
  border: 1px solid rgba(194,138,5,0.18);
  padding: 3px 8px;
  border-radius: 3px;
  color: var(--text-muted);
}

.drawer-quote {
  margin-top: 24px;
  border-left: 2px solid var(--accent);
  padding: 12px 0 12px 18px;
  font-family: var(--font-display);
  font-size: 17px;
  font-style: italic;
  color: var(--text);
  line-height: 1.45;
}

/* ---- MOBILE ---- */
@media (max-width: 768px) {
  .filmstrip-section { height: 78vh; min-height: 420px; }
  .card { flex: 0 0 85vw; }
  .card:nth-child(odd), .card:nth-child(even),
  .card.active:nth-child(odd), .card.active:nth-child(even) {
    transform: none !important; /* no tilt on mobile - too cramped */
  }
  .filmstrip { padding-left: 5vw; padding-right: 5vw; gap: 16px; padding-top: 20px; }
  .card-name { font-size: 17px; }
  .card-desc { font-size: 12px; }
  .chrome-url { font-size: 10px; }
  .drawer { width: 100%; max-width: 100%; height: 80vh; bottom: 0; top: auto; right: 0; left: 0;
    transform: translateY(100%); border-left: none; border-top: 1px solid var(--rule);
    border-radius: 12px 12px 0 0; }
  .drawer.open { transform: translateY(0); }
  .scroll-hint { display: none; } /* touch devices don't need the arrow hint */
}