:root {
  --bg: #f4f6fb;
  --card: #ffffff;
  --ink: #1e293b;
  --muted: #64748b;
  --line: #e2e8f0;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --green: #16a34a;
  --red: #dc2626;
  --amber: #d97706;
  --shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 1px 2px rgba(15, 23, 42, .06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}

main {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

.site-header {
  text-align: center;
  padding: 40px 20px 24px;
}
.site-header h1 {
  margin: 0;
  font-size: 2.1rem;
  letter-spacing: -.5px;
}
.logo {
  background: var(--blue);
  color: #fff;
  padding: 2px 10px;
  border-radius: 8px;
}
.logo.jpg { background: var(--green); }
.arrow { color: var(--muted); margin: 0 4px; }
.tagline {
  color: var(--muted);
  max-width: 520px;
  margin: 12px auto 0;
}

/* Dropzone */
.dropzone {
  background: var(--card);
  border: 2px dashed #c3cce0;
  border-radius: 16px;
  padding: 38px 20px;
  text-align: center;
  transition: border-color .15s, background .15s;
  box-shadow: var(--shadow);
}
.dropzone.drag {
  border-color: var(--blue);
  background: #eef4ff;
}
.dz-icon { font-size: 2rem; }
.dz-title { font-weight: 600; margin: 8px 0 0; }
.dz-or { color: var(--muted); margin: 6px 0; font-size: .9rem; }
.dz-uploading { color: var(--blue); font-weight: 600; margin: 14px 0 0; }

/* Buttons */
.btn {
  font: inherit;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  padding: 9px 16px;
  border-radius: 9px;
  cursor: pointer;
  transition: background .15s, border-color .15s, opacity .15s;
}
.btn:hover { background: #f1f5f9; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn.primary:hover { background: var(--blue-dark); }
.btn.small { padding: 5px 11px; font-size: .85rem; }
.btn.link { border: none; background: none; color: var(--blue); padding: 4px 6px; }
.btn.link:hover { background: none; text-decoration: underline; }

/* Toolbar */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  margin: 22px 0 10px;
}
.toolbar-left { color: var(--muted); }
.toolbar-left strong { color: var(--ink); }
.toolbar-right { display: flex; gap: 8px; flex-wrap: wrap; }

/* Zip link panel */
.ziplink {
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  border-radius: 12px;
  padding: 12px 14px;
  margin: 6px 0 14px;
}
.ziplink-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.ziplink-label { font-weight: 600; color: #065f46; }
#zipUrl {
  flex: 1;
  min-width: 200px;
  font: inherit;
  padding: 7px 10px;
  border: 1px solid #a7f3d0;
  border-radius: 8px;
  background: #fff;
}
.ziplink-expiry { margin: 8px 0 0; color: #047857; font-size: .85rem; }

/* Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(168px, 1fr));
  gap: 16px;
  margin-top: 8px;
}
.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.card.failed { border-color: #fecaca; }
.card .sel {
  position: absolute;
  top: 9px;
  left: 9px;
  width: 20px;
  height: 20px;
  z-index: 2;
  cursor: pointer;
  accent-color: var(--blue);
}
.card .sel:disabled { cursor: default; opacity: .35; }

.thumb {
  aspect-ratio: 1 / 1;
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
}
.card.done .thumb { cursor: pointer; }
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }

.icon.error {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: #fee2e2;
  color: var(--red);
  font-weight: 700;
  font-size: 1.4rem;
  display: flex; align-items: center; justify-content: center;
}

.spinner {
  width: 30px; height: 30px;
  border: 3px solid #cbd5e1;
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.meta { padding: 9px 11px 4px; }
.meta .name {
  font-size: .85rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.meta .status { font-size: .78rem; color: var(--muted); }
.card.processing .status { color: var(--blue); }
.card.queued .status { color: var(--amber); }
.card.failed .status { color: var(--red); }

.card-actions { padding: 6px 11px 11px; margin-top: auto; }
.card-actions .btn { display: inline-block; text-decoration: none; }

.footnote {
  text-align: center;
  color: var(--muted);
  font-size: .85rem;
  margin-top: 34px;
}

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  background: #111827;
  color: #fff;
  padding: 11px 18px;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
  z-index: 50;
  max-width: 90vw;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --card: #1e293b;
    --ink: #e2e8f0;
    --muted: #94a3b8;
    --line: #334155;
  }
  .dropzone { border-color: #3b4a63; }
  .dropzone.drag { background: #1e2a44; }
  .btn { background: #243044; color: var(--ink); }
  .btn:hover { background: #2c3a52; }
  .thumb { background: #0f172a; }
  #zipUrl { background: #0f172a; color: var(--ink); }
  .ziplink { background: #0c2a22; border-color: #14532d; }
}