/* ============================================================
   Jenson USA Flipbook
   ============================================================ */
:root {
  --bg: #0f1115;
  --panel: #181a20;
  --panel-2: #20232b;
  --accent: #eb5820;
  --accent-2: #ff7a3c;
  --text: #f5f1ea;
  --muted: #9aa0aa;
  --shadow: 0 24px 60px rgba(0,0,0,.55);
  --radius: 10px;
  --bar-h: 56px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0; height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

#app { display: flex; flex-direction: column; height: 100vh; }

/* ---------- Top Bar ---------- */
.topbar {
  display: flex; align-items: center; gap: 16px;
  height: var(--bar-h);
  padding: 0 18px;
  background: var(--panel);
  border-bottom: 1px solid rgba(255,255,255,.05);
  z-index: 50;
}
.brand { display: flex; align-items: baseline; gap: 10px; }
.brand-mark { font-weight: 800; letter-spacing: .08em; color: var(--text); font-size: 16px; }
.brand-issue { color: var(--muted); font-size: 12px; }

.spacer { flex: 1; }

.iconbtn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px;
  background: transparent; border: 0; color: var(--text);
  border-radius: 8px; cursor: pointer;
  transition: background .15s, color .15s;
}
.iconbtn:hover { background: var(--panel-2); color: var(--accent-2); }
.iconbtn.active { background: var(--accent); color: #fff; }
.iconbtn svg { width: 20px; height: 20px; }

/* ---------- Stage ---------- */
.stage {
  flex: 1; position: relative; overflow: hidden;
  background:
    radial-gradient(circle at 50% 35%, #20232b 0%, #0f1115 70%);
}

#flipbook-wrap {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  transition: transform .25s ease-out;
}

#flipbook {
  filter: drop-shadow(var(--shadow));
}

.stPage {
  background: #111;
  overflow: hidden;
  position: relative;
}
.stPage img {
  width: 100%; height: 100%;
  display: block; user-select: none; -webkit-user-drag: none;
}
.stPage .hotspot-layer {
  position: absolute; inset: 0;
  pointer-events: none;
}
.stPage .hotspot {
  position: absolute; pointer-events: auto;
  border: 2px solid transparent;
  border-radius: 6px;
  transition: background .15s, border-color .15s, box-shadow .15s;
  text-decoration: none;
  display: flex; align-items: flex-end; padding: 6px;
  cursor: pointer;
}
.stPage .hotspot:hover,
.stPage .hotspot:focus-visible {
  background: rgba(235,88,32,.18);
  border-color: rgba(235,88,32,.85);
  box-shadow: 0 0 0 2px rgba(235,88,32,.25);
}
.stPage .hotspot .hotspot-label {
  background: rgba(15,17,21,.92);
  color: #fff;
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 999px;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .15s, transform .15s;
  pointer-events: none;
  white-space: nowrap;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}
.stPage .hotspot:hover .hotspot-label,
.stPage .hotspot:focus-visible .hotspot-label {
  opacity: 1; transform: translateY(0);
}

/* Outline-only mode toggled by 'Show hotspots' button */
body.hotspots-visible .stPage .hotspot {
  background: rgba(235,88,32,.10);
  border-color: rgba(235,88,32,.55);
}

/* Edge nav arrows */
.edgenav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 56px; height: 56px; border-radius: 50%;
  background: rgba(15,17,21,.65);
  border: 1px solid rgba(255,255,255,.08);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  z-index: 20;
  backdrop-filter: blur(6px);
  transition: background .15s, transform .15s;
}
.edgenav:hover { background: var(--accent); transform: translateY(-50%) scale(1.05); }
.edgenav.prev { left: 16px; }
.edgenav.next { right: 16px; }
.edgenav svg { width: 22px; height: 22px; }

/* ---------- Bottom bar ---------- */
.bottombar {
  display: flex; align-items: center; gap: 14px;
  height: var(--bar-h);
  padding: 0 18px;
  background: var(--panel);
  border-top: 1px solid rgba(255,255,255,.05);
}
.page-counter {
  display: flex; align-items: center; gap: 8px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
}
.page-counter input {
  width: 48px; text-align: center;
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 6px;
  padding: 4px 6px;
  font: inherit;
}

.progress {
  flex: 1; position: relative;
  height: 6px; background: var(--panel-2);
  border-radius: 999px; overflow: hidden;
  cursor: pointer;
}
.progress-fill {
  position: absolute; left: 0; top: 0; bottom: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  width: 0%;
  transition: width .25s ease;
}

/* ---------- Drawer (thumbnails + TOC) ---------- */
.drawer {
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 280px;
  background: var(--panel);
  border-right: 1px solid rgba(255,255,255,.06);
  transform: translateX(-100%);
  transition: transform .25s ease;
  z-index: 40;
  display: flex; flex-direction: column;
}
.drawer.open { transform: translateX(0); }
.drawer-tabs {
  display: flex;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.drawer-tab {
  flex: 1; padding: 14px 10px;
  background: transparent; border: 0;
  color: var(--muted);
  font: inherit; font-size: 12px; letter-spacing: .1em;
  text-transform: uppercase;
  cursor: pointer;
}
.drawer-tab.active { color: var(--text); border-bottom: 2px solid var(--accent); }
.drawer-body { flex: 1; overflow-y: auto; padding: 12px; }

.thumbs {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px;
}
.thumb {
  border: 2px solid transparent;
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  background: var(--panel-2);
  position: relative;
}
.thumb img { width: 100%; display: block; }
.thumb-num {
  position: absolute; bottom: 4px; right: 6px;
  background: rgba(0,0,0,.65); color: #fff;
  font-size: 10px; padding: 2px 6px; border-radius: 4px;
}
.thumb.active { border-color: var(--accent); }
.thumb:hover { border-color: rgba(235,88,32,.5); }

.toc-list { list-style: none; margin: 0; padding: 0; }
.toc-list li {
  padding: 12px 10px;
  border-bottom: 1px solid rgba(255,255,255,.04);
  cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
  gap: 12px;
  color: var(--text);
  transition: background .15s;
}
.toc-list li:hover { background: var(--panel-2); color: var(--accent-2); }
.toc-list .toc-page { color: var(--muted); font-size: 12px; }

/* ---------- Share popover ---------- */
.popover {
  position: absolute; top: calc(var(--bar-h) + 8px); right: 12px;
  background: var(--panel);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 10px;
  padding: 14px;
  width: 280px;
  z-index: 60;
  display: none;
  box-shadow: 0 12px 30px rgba(0,0,0,.5);
}
.popover.open { display: block; }
.popover h4 { margin: 0 0 10px; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.share-row { display: flex; gap: 8px; flex-wrap: wrap; }
.share-row a, .share-row button {
  flex: 1; min-width: 0;
  padding: 8px 10px;
  background: var(--panel-2); color: var(--text);
  border: 1px solid rgba(255,255,255,.05);
  border-radius: 6px;
  text-decoration: none; text-align: center;
  font-size: 12px; cursor: pointer;
}
.share-row a:hover, .share-row button:hover { background: var(--accent); color: #fff; }
.share-url {
  margin-top: 10px;
  background: #0f1115;
  border: 1px solid rgba(255,255,255,.06);
  padding: 8px 10px;
  font-size: 11px; color: var(--muted);
  border-radius: 6px;
  word-break: break-all;
  font-family: ui-monospace, Menlo, monospace;
}

/* ---------- Zoom ---------- */
.zoom-controls {
  display: inline-flex; align-items: center; gap: 4px;
  background: var(--panel-2);
  border-radius: 8px;
  padding: 2px;
}
.zoom-controls .iconbtn { width: 32px; height: 32px; }
.zoom-controls .zoom-value {
  font-size: 11px; color: var(--muted); padding: 0 6px; min-width: 42px; text-align: center;
}

/* ---------- Loading ---------- */
.loader {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg);
  z-index: 100;
  transition: opacity .35s;
}
.loader.hidden { opacity: 0; pointer-events: none; }
.loader-spinner {
  width: 42px; height: 42px;
  border: 3px solid rgba(255,255,255,.1);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Toast ---------- */
.toast {
  position: absolute; bottom: calc(var(--bar-h) + 16px); left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--panel);
  border: 1px solid rgba(255,255,255,.08);
  color: var(--text);
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 70;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .brand-issue { display: none; }
  .iconbtn { width: 40px; height: 40px; }
  .iconbtn .label { display: none; }
  .drawer { width: 84vw; }
  .edgenav { width: 44px; height: 44px; }
  .edgenav.prev { left: 6px; }
  .edgenav.next { right: 6px; }
  .progress { display: none; }
}

/* fullscreen tweaks */
:fullscreen .topbar, :fullscreen .bottombar { background: #000; }