:root {
  --bg: #0f1115;
  --panel: #171a21;
  --border: #2a2f3a;
  --text: #e7e9ee;
  --muted: #9aa1ad;
  --accent: #4f8cff;
  --accent2: #7c5cff;
  --ok: #35c46b;
  --check: #e0b13a;
  --flagged: #e0503a;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px;
  border-bottom: 1px solid var(--border);
}
.logo { height: 40px; display: block; }
.auth-status { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 12px; }
.auth-status a { color: var(--accent); text-decoration: none; }
.auth-status a:hover { text-decoration: underline; }
main { max-width: 900px; margin: 24px auto; padding: 0 16px; }
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
}
.hidden { display: none !important; }
.dropzone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 40px;
  text-align: center;
  cursor: pointer;
  color: var(--muted);
  transition: border-color .15s;
}
.dropzone.drag { border-color: var(--accent); color: var(--text); }
.target-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}
.target-buttons { display: flex; gap: 8px; }
.target-btn, button, .button {
  background: #232733;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  text-decoration: none;
  display: inline-block;
}
.target-btn.active, button:not(:disabled):hover, .button:hover { border-color: var(--accent); }
.target-btn.active { background: var(--accent); color: #fff; }
.custom-target {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #232733;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0 10px;
}
.custom-target input {
  background: transparent;
  border: none;
  color: var(--text);
  padding: 8px 0;
  width: 70px;
  font-size: 14px;
}
.custom-target input:focus { outline: none; }
.custom-target span { color: var(--muted); font-size: 13px; }

#startBtn, #applyBtn, #downloadBtn {
  font-weight: 600;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border: none;
  color: #fff;
  box-shadow: 0 2px 10px rgba(79,140,255,.25);
  transition: transform .12s, box-shadow .12s;
}
#startBtn:not(:disabled):hover, #applyBtn:not(:disabled):hover, #downloadBtn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(79,140,255,.4);
  border: none;
}
#startBtn { margin-top: 16px; }
#startBtn:disabled { opacity: .4; cursor: not-allowed; transform: none; box-shadow: none; }
#downloadBtn { background: linear-gradient(135deg, var(--ok), #1f9a52); box-shadow: 0 2px 10px rgba(53,196,107,.25); }
#downloadBtn:hover { box-shadow: 0 4px 16px rgba(53,196,107,.4); }

.progress-bar {
  height: 8px;
  background: #232733;
  border-radius: 4px;
  overflow: hidden;
  margin-top: 10px;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  width: 0%;
  transition: width .5s ease;
  background-size: 200% 100%;
  animation: shimmer 1.6s linear infinite;
}
@keyframes shimmer { 0% { background-position: 0% 0; } 100% { background-position: -200% 0; } }
.progress-tip { color: var(--muted); font-size: 13px; margin: 10px 0 0; min-height: 18px; }

.warning-banner {
  background: rgba(224,177,58,.12);
  border: 1px solid var(--check);
  color: #f0d189;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 16px;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.legend strong { color: var(--text); }
.legend-sep { color: var(--border); }

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 10px;
}
#resultSizes { color: var(--muted); margin-left: 10px; font-size: 13px; }
.result-actions { display: flex; gap: 10px; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 14px;
}
.card {
  background: #1d212b;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.card img { width: 100%; display: block; cursor: zoom-in; background: #000; }
.card-body { padding: 8px; font-size: 12px; }
.card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.badge { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.badge.ok { background: var(--ok); }
.badge.check { background: var(--check); }
.badge.flagged { background: var(--flagged); }
.page-size { color: var(--muted); }
.toggle-row { display: flex; gap: 4px; margin-top: 6px; }
.toggle-row button {
  flex: 1;
  padding: 4px 2px;
  font-size: 11px;
  border-radius: 4px;
}
.toggle-row button.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.modal {
  position: fixed; inset: 0; background: rgba(0,0,0,.8);
  display: flex; align-items: center; justify-content: center; z-index: 100;
}
.zoom-loading { color: var(--muted); padding: 40px; text-align: center; }
.close-btn {
  background: none; border: none;
  color: #fff; font-size: 24px; cursor: pointer; line-height: 1;
}

/* --- page-by-page navigator modal --- */
.nav-modal-content {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: min(720px, 92vw);
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.nav-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
.nav-title { flex: 1; display: flex; align-items: center; gap: 8px; justify-content: center; font-size: 14px; }
.nav-arrow {
  background: #232733; border: 1px solid var(--border); color: var(--text);
  width: 32px; height: 32px; border-radius: 6px; font-size: 18px; cursor: pointer; padding: 0;
}
.nav-arrow:disabled { opacity: .3; cursor: not-allowed; }
.nav-toggle { display: flex; gap: 8px; padding: 10px 14px 0; }
.nav-toggle-btn {
  flex: 1; background: #232733; border: 1px solid var(--border); color: var(--muted);
  padding: 8px; border-radius: 6px; font-size: 13px; cursor: pointer;
}
.nav-toggle-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.nav-image-wrap {
  flex: 1;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
  overflow: auto;
  background: #000;
}
.nav-img { max-width: 100%; max-height: 60vh; display: block; }
.nav-footer { padding: 12px 14px 16px; border-top: 1px solid var(--border); }
.nav-override-row button { flex: 1; }
.nav-hint { color: var(--muted); font-size: 12px; margin: 10px 0 0; }

/* --- admin page --- */
.admin-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.admin-table th, .admin-table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
.admin-table th { color: var(--muted); font-weight: 600; }
.status-pill { padding: 2px 8px; border-radius: 10px; font-size: 11px; }
.status-pill.done { background: rgba(53,196,107,.15); color: var(--ok); }
.status-pill.failed { background: rgba(224,80,58,.15); color: var(--flagged); }
.status-pill.compressing, .status-pill.queued, .status-pill.analyzing { background: rgba(79,140,255,.15); color: var(--accent); }
.insight-card {
  background: #1d212b;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 10px;
}
.insight-card .meta { color: var(--muted); font-size: 12px; margin-top: 8px; }
.insight-actions { display: flex; gap: 8px; margin-top: 10px; }
.insight-actions button { font-size: 12px; padding: 6px 12px; }