/* ─────────────────────────────────────────
   slide-converter / css/style.css
   PM Mayors · Slide → Handout Tool
───────────────────────────────────────── */

:root {
  --paper:       #f5f0e8;
  --paper-dark:  #e8e0d0;
  --ink:         #1a1410;
  --ink-light:   #4a3f35;
  --teal:        #2a9d8f;
  --teal-dark:   #1e7268;
  --red:         #e63946;
  --gold:        #c9a84c;
  --border:      #c8baa8;
  --floater-bg:           rgba(30,41,59,0.95);
  --floater-border:       rgba(255,255,255,0.1);
  --floater-hover-border: #0ea5e9;
  --floater-text:         #f8fafc;
  --floater-subtext:      #94a3b8;
  --gradient-brand: linear-gradient(135deg,#e63946 0%,#f4a261 25%,#2a9d8f 50%,#264653 75%,#e76f51 100%);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Noto Serif TC', serif;
  background: var(--paper);
  color: var(--ink);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header ── */
header {
  background: #1a2e2b;
  color: #f0ece4;
  padding: 24px 40px;
  border-bottom: 3px solid var(--gold);
  position: relative;
  overflow: hidden;
}
header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    45deg, transparent, transparent 20px,
    rgba(42,157,143,0.04) 20px, rgba(42,157,143,0.04) 21px
  );
  pointer-events: none;
  z-index: 0;
}
.header-inner {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  position: relative;
  z-index: 1;
  width: 100%;
}
.header-text { flex: 1; min-width: 0; }
header h1 { font-size: 1.5rem; font-weight: 700; letter-spacing: 0.04em; }
header h1 span { color: var(--gold); }
header h1 em   { font-style: normal; color: #a0c4bf; font-size: 0.9em; }
header p  { font-size: 0.8rem; color: #a0b4b0; margin-top: 4px; font-family: 'JetBrains Mono', monospace; }

/* ── Lang Toggle ── */
.lang-toggle {
  flex-shrink: 0;
  padding: 7px 18px;
  background: transparent;
  border: 1.5px solid rgba(255,255,255,0.25);
  border-radius: 20px;
  color: #d0e8e4;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: all 0.2s;
}
.lang-toggle:hover {
  border-color: var(--teal);
  color: #fff;
  background: rgba(42,157,143,0.2);
}

/* ── Main ── */
main { flex: 1; max-width: 860px; width: 100%; margin: 0 auto; padding: 36px 24px 120px; }

/* ── Drop Zone ── */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: 4px;
  padding: 56px 32px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: #faf7f2;
}
.drop-zone:hover, .drop-zone.drag-over { border-color: var(--teal); background: #f0faf8; }
.drop-zone input { display: none; }
.drop-icon { font-size: 3rem; display: block; margin-bottom: 16px; line-height: 1; }
.drop-zone h2 { font-size: 1.15rem; color: var(--ink-light); margin-bottom: 8px; }
.drop-zone p  { font-size: 0.8rem; color: #8a7a6a; font-family: 'JetBrains Mono', monospace; }
.btn-pick {
  display: inline-block; margin-top: 20px; padding: 10px 28px;
  background: var(--teal); color: white; border-radius: 3px;
  font-size: 0.88rem; font-family: 'JetBrains Mono', monospace;
  border: none; cursor: pointer; transition: background 0.2s; letter-spacing: 0.03em;
}
.btn-pick:hover { background: var(--teal-dark); }

/* ── Detection Banner ── */
.detect-banner {
  display: none; margin-top: 16px; padding: 12px 18px; border-radius: 4px;
  font-family: 'JetBrains Mono', monospace; font-size: 0.82rem;
  border-left: 4px solid; align-items: center; gap: 10px;
}
.detect-banner.visible { display: flex; }
.detect-banner.dark  { border-color: var(--teal); background: #f0faf8; color: #1e5a54; }
.detect-banner.light { border-color: var(--gold); background: #fdf8ed; color: #7a5a10; }
.detect-banner .detect-icon { font-size: 1.2rem; flex-shrink: 0; }

/* ── Controls ── */
.controls { display: none; margin-top: 28px; background: #faf7f2; border: 1px solid var(--border); border-radius: 4px; padding: 24px 28px; }
.controls.visible { display: block; }
.controls-title {
  font-size: 0.72rem; font-family: 'JetBrains Mono', monospace; color: var(--teal);
  letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 18px; border-bottom: 1px solid var(--paper-dark); padding-bottom: 10px;
}
.file-info {
  font-family: 'JetBrains Mono', monospace; font-size: 0.78rem; color: #7a6a5a;
  margin-bottom: 18px; padding: 8px 12px; background: var(--paper-dark);
  border-radius: 3px; display: flex; gap: 16px; flex-wrap: wrap;
}
.file-info span { color: var(--teal); }
.control-row { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }
.control-row label { font-size: 0.85rem; color: var(--ink-light); min-width: 100px; flex-shrink: 0; }
.control-row input[type="range"] { flex: 1; min-width: 140px; accent-color: var(--teal); cursor: pointer; }
.control-val { font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; color: var(--teal); min-width: 36px; text-align: right; }
.mode-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
.mode-btn {
  padding: 7px 18px; border: 1.5px solid var(--border); border-radius: 3px;
  background: white; font-size: 0.82rem; font-family: 'JetBrains Mono', monospace;
  cursor: pointer; color: var(--ink-light); transition: all 0.15s;
}
.mode-btn.active { border-color: var(--teal); background: var(--teal); color: white; }
.btn-convert {
  display: block; width: 100%; margin-top: 20px; padding: 14px;
  background: var(--ink); color: var(--paper); border: none; border-radius: 3px;
  font-size: 0.95rem; font-family: 'Noto Serif TC', serif; font-weight: 600;
  cursor: pointer; letter-spacing: 0.06em; transition: all 0.2s;
}
.btn-convert:hover:not(:disabled) { background: #2d2520; }
.btn-convert:disabled { opacity: 0.5; cursor: not-allowed; }

/* ── Progress ── */
.progress-wrap { display: none; margin-top: 28px; background: #faf7f2; border: 1px solid var(--border); border-radius: 4px; padding: 24px 28px; }
.progress-wrap.visible { display: block; }
.progress-label { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.progress-label .stage { font-size: 0.82rem; color: var(--ink-light); font-family: 'JetBrains Mono', monospace; }
.progress-label .pct   { font-size: 0.9rem; font-family: 'JetBrains Mono', monospace; color: var(--teal); font-weight: 600; }
.progress-track { height: 6px; background: var(--paper-dark); border-radius: 99px; overflow: hidden; }
.progress-bar   { height: 100%; background: linear-gradient(90deg, var(--teal), #4ecdc4); border-radius: 99px; transition: width 0.3s ease; width: 0%; }
.page-grid { display: grid; grid-template-columns: repeat(auto-fill, 14px); gap: 3px; margin-top: 16px; }
.page-dot  { width: 14px; height: 14px; border-radius: 2px; background: var(--paper-dark); transition: background 0.2s; }
.page-dot.done    { background: var(--teal); }
.page-dot.current { background: var(--gold); animation: pulse 0.8s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.5} }

/* ── Preview ── */
.preview-section { display: none; margin-top: 28px; }
.preview-section.visible { display: block; }
.section-label {
  font-size: 0.72rem; font-family: 'JetBrains Mono', monospace; color: var(--teal);
  letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 14px; border-bottom: 1px solid var(--paper-dark); padding-bottom: 10px;
}
.preview-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }
.preview-card { border: 1px solid var(--border); border-radius: 3px; overflow: hidden; background: white; }
.preview-card img { width: 100%; display: block; }
.preview-card .pg-num { font-family: 'JetBrains Mono', monospace; font-size: 0.68rem; color: #8a7a6a; padding: 4px 8px; background: var(--paper-dark); text-align: center; }

/* ── Download ── */
.download-wrap { display: none; margin-top: 24px; text-align: center; }
.download-wrap.visible { display: block; }
.btn-download {
  display: inline-flex; align-items: center; gap: 10px; padding: 14px 36px;
  background: var(--teal); color: white; border-radius: 3px; font-size: 1rem;
  font-family: 'Noto Serif TC', serif; font-weight: 700; border: none;
  cursor: pointer; letter-spacing: 0.04em; transition: background 0.2s; text-decoration: none;
}
.btn-download:hover { background: var(--teal-dark); }
.btn-reset {
  display: inline-block; margin-top: 12px; padding: 8px 20px;
  background: transparent; color: var(--ink-light); border: 1px solid var(--border);
  border-radius: 3px; font-size: 0.8rem; font-family: 'JetBrains Mono', monospace;
  cursor: pointer; transition: all 0.15s;
}
.btn-reset:hover { border-color: var(--red); color: var(--red); }
.done-stats { font-family: 'JetBrains Mono', monospace; font-size: 0.78rem; color: #8a7a6a; margin-bottom: 16px; }
.done-stats span { color: var(--teal); }

/* ── PM Mayors Floater ── */
.brand-badge {
  position: fixed; bottom: 1.5rem; right: 1.5rem;
  display: flex; align-items: center; gap: 0.75rem; padding: 0.75rem 1.25rem;
  background: var(--floater-bg); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-radius: 50px; border: 1px solid var(--floater-border);
  text-decoration: none; color: var(--floater-text);
  transition: all 0.3s ease; z-index: 1000; box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}
.brand-badge:hover { transform: translateY(-4px); border-color: var(--floater-hover-border); box-shadow: 0 15px 50px rgba(14,165,233,0.3); }
.brand-badge img { width: 36px; height: 36px; border-radius: 10px; }
.brand-badge-text { display: flex; flex-direction: column; }
.brand-badge-text strong { font-size: 0.9rem; font-weight: 600; background: var(--gradient-brand); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.brand-badge-text span { font-size: 0.75rem; color: var(--floater-subtext); }
.globe-icon { width: 22px; height: 22px; fill: #0ea5e9; }

/* ── Responsive ── */
@media (max-width: 768px) {
  header { padding: 18px 20px; }
  header h1 { font-size: 1.1rem; }
  .lang-toggle { padding: 6px 14px; font-size: 0.75rem; }
  main { padding: 24px 16px 100px; }
  .brand-badge { bottom: 1rem; right: 1rem; padding: 0.6rem 1rem; }
  .brand-badge-text, .globe-icon { display: none; }
}