/* IllumiDoc cloud viewer — standalone styles (dark, touch-first).
   presentation.css (copied from public/css) styles the slideshow overlay. */

:root {
  --color-primary: #2563eb;
  --bar-bg: rgba(18, 20, 26, 0.92);
  --bar-fg: #e8eaf0;
  --bar-muted: rgba(232, 234, 240, 0.55);
  --bar-border: rgba(255, 255, 255, 0.08);
  --btn-hover: rgba(255, 255, 255, 0.08);
  --btn-active: rgba(255, 255, 255, 0.16);
  --bar-h: 48px;
}

/* Light interface (toolbar/tray/panel chrome). The plan itself is coloured by the
   plan-view filter and the canvas background, chosen separately in the Display panel. */
[data-theme="light"] {
  --bar-bg: rgba(248, 250, 252, 0.94);
  --bar-fg: #1e293b;
  --bar-muted: rgba(30, 41, 59, 0.55);
  --bar-border: rgba(0, 0, 0, 0.08);
  --btn-hover: rgba(0, 0, 0, 0.06);
  --btn-active: rgba(0, 0, 0, 0.12);
}
[data-theme="light"] body, [data-theme="light"] .viewer-layout { background: #e5e7eb; }
[data-theme="light"] .sheet-thumb { background: #fff; }
[data-theme="light"] .sheet-thumb img { background: #f1f5f9; }

/* The hidden attribute must beat our display:flex/inline-flex rules. */
[hidden] { display: none !important; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: #000;
  color: var(--bar-fg);
  font: 14px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  overscroll-behavior: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

/* ── Layout ── */
.viewer-layout {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  background: #000;
}
.viewer-canvas { position: relative; flex: 1; min-height: 0; }
#osd-viewer { position: absolute; inset: 0; }

/* ── Toolbar ── */
.vtoolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: var(--bar-h);
  padding: 4px 8px;
  padding-top: max(4px, env(safe-area-inset-top));
  background: var(--bar-bg);
  border-bottom: 1px solid var(--bar-border);
  backdrop-filter: blur(8px);
  z-index: 10;
}
.vt-left { flex: 1 1 auto; min-width: 0; display: flex; align-items: center; gap: 8px; }
.vt-center, .vt-right { flex: 0 0 auto; display: flex; align-items: center; gap: 2px; }
.vt-title {
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.vt-brand {
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--bar-muted);
  flex: 0 0 auto;
}
.vtoolbar button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--bar-fg);
  min-width: 40px;
  height: 40px;
  padding: 0 8px;
  border-radius: 8px;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.vtoolbar button:hover { background: var(--btn-hover); }
.vtoolbar button:active { background: var(--btn-active); }
.vtoolbar button:disabled { opacity: 0.35; cursor: default; background: transparent; }
.vtoolbar button.vt-primary {
  background: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0 14px;
}
.vtoolbar button.vt-primary:hover { filter: brightness(1.1); }
.vt-sheet-label { font-size: 0.85rem !important; font-variant-numeric: tabular-nums; }
.vt-zoom {
  min-width: 46px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--bar-muted);
  font-variant-numeric: tabular-nums;
}
.vt-sep { width: 1px; height: 22px; background: var(--bar-border); margin: 0 4px; }

/* ── Sheet tray (thumbnail strip) ── */
.sheet-tray {
  display: flex;
  gap: 8px;
  padding: 8px 10px;
  padding-bottom: max(8px, env(safe-area-inset-bottom));
  overflow-x: auto;
  background: var(--bar-bg);
  border-top: 1px solid var(--bar-border);
  z-index: 10;
  scroll-snap-type: x proximity;
}
.sheet-thumb {
  flex: 0 0 auto;
  width: 120px;
  border: 2px solid transparent;
  border-radius: 6px;
  background: #111;
  padding: 0;
  cursor: pointer;
  color: var(--bar-muted);
  font-size: 0.7rem;
  text-align: center;
  scroll-snap-align: center;
  overflow: hidden;
}
.sheet-thumb img { display: block; width: 100%; height: 80px; object-fit: contain; background: #1a1a1a; }
.sheet-thumb span { display: block; padding: 3px 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sheet-thumb.active { border-color: var(--color-primary); color: var(--bar-fg); }
.sheet-thumb:hover { border-color: rgba(255,255,255,0.35); }
.composite-thumb { display: grid; grid-template-columns: 1fr 1fr; grid-auto-rows: minmax(0, 1fr); gap: 2px; height: 80px; background: #1a1a1a; }
.composite-thumb img { width: 100%; height: 100%; min-height: 0; object-fit: cover; }
[data-theme="light"] .composite-thumb { background: #f1f5f9; }

/* ── Presentation mode: hide chrome (presentation.css moves .viewer-canvas to fixed inset 0) ── */
.viewer-layout.presentation-mode .vtoolbar,
.viewer-layout.presentation-mode .sheet-tray,
.viewer-layout.presentation-mode .navigator { display: none !important; }

/* Bigger, finger-friendly presentation controls on touch devices. */
@media (pointer: coarse) {
  .presentation-overlay .btn-pres { width: 48px; height: 48px; font-size: 20px; }
  .presentation-overlay { padding: 10px 14px; gap: 10px; }
  .vtoolbar button { min-width: 44px; height: 44px; }
}

/* ── Embed mode: compact chrome ── */
.viewer-layout.embed .vt-brand { display: none; }
.viewer-layout.embed .vtoolbar { --bar-h: 40px; padding-top: 4px; }
.viewer-layout.embed .vtoolbar button { height: 36px; min-width: 36px; font-size: 16px; }
.viewer-layout.embed .navigator { display: none !important; }

/* ── Narrow screens ── */
@media (max-width: 640px) {
  /* Budget at 375px: sheet ‹ n/N › (3) + − + ▶ ⛶ (4) = 7 × 44 + gaps < 340.
     Fit is reachable by double-tap/pinch and the 0 key; rotate/zoom% are desktop niceties. */
  .vt-brand, .vt-zoom, .vt-sep, #btn-rotate, #btn-fit { display: none; }
  .vtoolbar { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2px; padding-left: 4px; padding-right: 4px; }
  .vt-left { grid-column: 1; grid-row: 1; }
  .vt-right { grid-column: 2; grid-row: 1; }
  .vt-center { grid-column: 1 / -1; grid-row: 2; min-width: 0; }
  .vt-center .vt-sheet-label { flex: 1; min-width: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
  .vt-center .page-order-controls select { max-width: 112px; font-size: 13px; }
  .vt-center .page-order-controls input { width: 42px; }
  .vt-center, .vt-right { gap: 0; }
  .vtoolbar button { padding: 0 4px; }
  .vtoolbar button.vt-primary { padding: 0 10px; }
  .vtoolbar button.vt-primary .lbl { display: none; }
  .vt-sheet-label { padding: 0 6px !important; }
}

/* ── Landing (slideshow play screen) — same look as the share player ── */
#share-landing {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
  background: radial-gradient(circle at center, rgba(20,22,28,0.82), rgba(0,0,0,0.94));
  backdrop-filter: blur(2px);
  color: #fff;
  transition: opacity 0.35s ease;
}
#share-landing.hidden { opacity: 0; pointer-events: none; }
#share-landing h1 { font-size: clamp(1.2rem, 4vw, 1.9rem); margin: 0 0 6px; font-weight: 600; }
#share-landing .sub { font-size: 0.9rem; color: rgba(255,255,255,0.6); margin: 0 0 28px; }
.share-play-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 96px; height: 96px; border-radius: 50%; border: none; cursor: pointer;
  background: var(--color-primary); color: #fff;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  transition: transform 0.15s ease;
}
.share-play-btn:hover { transform: scale(1.06); }
.share-play-btn:active { transform: scale(0.96); }
.share-play-btn svg { width: 40px; height: 40px; margin-left: 5px; }
.share-play-windowed {
  display: block; margin: 18px auto 0; background: transparent;
  border: 1px solid rgba(255,255,255,0.35); color: rgba(255,255,255,0.85);
  border-radius: 999px; padding: 8px 18px; font-size: 0.85rem; cursor: pointer;
}
.share-play-windowed:hover { border-color: rgba(255,255,255,0.7); color: #fff; }
#share-landing .hint { margin-top: 22px; font-size: 0.78rem; color: rgba(255,255,255,0.45); max-width: 320px; line-height: 1.5; }
#share-landing .msg { font-size: 1rem; color: rgba(255,255,255,0.75); max-width: 360px; line-height: 1.6; }
#share-landing .msg small { display: block; margin-top: 10px; color: rgba(255,255,255,0.4); font-size: 0.75rem; }
.landing-close {
  position: absolute; top: max(10px, env(safe-area-inset-top)); right: 12px;
  background: transparent; border: 0; color: rgba(255,255,255,0.6); font-size: 26px; cursor: pointer; padding: 6px 10px;
}
.landing-close:hover { color: #fff; }

/* ── Display panel (◐) ── */
.vtoolbar button.active { background: var(--btn-active); }
.display-panel {
  position: absolute;
  top: calc(var(--bar-h) + 6px);
  right: 8px;
  z-index: 30;
  width: 260px;
  padding: 10px 12px 12px;
  background: var(--bar-bg);
  color: var(--bar-fg);
  border: 1px solid var(--bar-border);
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.35);
  backdrop-filter: blur(10px);
}
.dp-section + .dp-section { margin-top: 10px; }
.dp-label { font-size: 0.68rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--bar-muted); margin-bottom: 6px; }
.dp-row { display: flex; gap: 6px; }
.dp-row + .dp-row { margin-top: 6px; }
.dp-opt { flex: 1; height: 32px; border: 1px solid var(--bar-border); border-radius: 6px; background: transparent; color: var(--bar-fg); font: inherit; font-size: 0.8rem; cursor: pointer; }
.dp-opt:hover { background: var(--btn-hover); }
.dp-opt.active { border-color: var(--color-primary); box-shadow: 0 0 0 1px var(--color-primary) inset; color: var(--color-primary); font-weight: 600; }
.dp-colors .dp-opt { flex: 0 0 32px; width: 32px; border-radius: 50%; }
.dp-colors .dp-opt.active { box-shadow: 0 0 0 2px var(--bar-bg), 0 0 0 4px var(--color-primary); }
.dp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.dp-plan { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 6px 4px; border: 1px solid var(--bar-border); border-radius: 6px; background: transparent; color: var(--bar-muted); font: inherit; font-size: 0.68rem; cursor: pointer; }
.dp-plan:hover { background: var(--btn-hover); }
.dp-plan.active { border-color: var(--color-primary); color: var(--color-primary); font-weight: 600; box-shadow: 0 0 0 1px var(--color-primary) inset; }
.dp-swatch { width: 34px; height: 22px; border-radius: 3px; border: 1px solid var(--bar-border); }
.dp-reset { margin-top: 12px; width: 100%; height: 30px; border: 0; border-radius: 6px; background: transparent; color: var(--bar-muted); font: inherit; font-size: 0.75rem; cursor: pointer; }
.dp-reset:hover { background: var(--btn-hover); color: var(--bar-fg); }
@media (max-width: 640px) { .display-panel { right: 4px; left: 4px; width: auto; } }

/* Canvas grid patterns (colour set via --grid-color by display-settings.js) */
.canvas-grid-lines {
  background-image: linear-gradient(var(--grid-color, rgba(128,128,128,0.15)) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color, rgba(128,128,128,0.15)) 1px, transparent 1px) !important;
  background-size: 40px 40px !important;
}
.canvas-grid-dots {
  background-image: radial-gradient(circle, var(--grid-color, rgba(128,128,128,0.25)) 1px, transparent 1px) !important;
  background-size: 24px 24px !important;
}

/* ── Perf overlay (?perf=1) ── */
.perf-overlay {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 20;
  background: rgba(0,0,0,0.72);
  color: #9fe;
  font: 11px/1.45 ui-monospace, SFMono-Regular, Menlo, monospace;
  padding: 8px 10px;
  border-radius: 6px;
  pointer-events: none;
  white-space: pre;
}

/* Loading state */
.vt-loading { color: var(--bar-muted); font-weight: 400; }

/* Slideshow authoring stays in a tray alongside the canvas. */
.show-builder { position: absolute; z-index: 20; right: 8px; top: calc(var(--bar-h) + 12px); width: min(360px, calc(100vw - 16px)); max-height: calc(100dvh - 120px); overflow-y: auto; box-sizing: border-box; padding: 14px; background: var(--share-control-bg); color: var(--bar-fg); border: 1px solid var(--bar-border); border-radius: 10px; box-shadow: 0 6px 24px #0006; }
.show-builder header { display: flex; align-items: center; justify-content: space-between; }
.show-builder h2 { font-size: 17px; margin: 0; }
.show-builder p, .show-builder small { color: var(--share-control-muted); font-size: 12px; }
.show-builder button { min-height: 40px; min-width: 36px; cursor: pointer; padding: 6px; font: inherit; }
.show-builder button:disabled { opacity: .45; cursor: default; }
.show-builder button:hover:not(:disabled) { background: var(--btn-active); }
.show-builder :focus-visible { outline: 2px solid #60a5fa; outline-offset: 2px; }
.show-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.show-slides { padding-left: 0; }
.show-slide-number { width: 16px; flex-shrink: 0; color: var(--share-control-muted); }
.show-slides li { display: flex; align-items: center; gap: 4px; margin: 8px 0; }
.show-slides input { width: 0; flex: 1; min-width: 0; padding: 8px; font: inherit; }
.show-settings { display: grid; gap: 8px; margin: 12px 0; }
.show-settings input[type="number"] { width: 60px; padding: 6px; font: inherit; }
.show-play { width: 100%; }
@media (max-width: 640px) { .show-builder { top: 100px; max-height: calc(100dvh - 120px); } }