:root {
  --bg: #0f0f10;
  --surface: #1a1a1c;
  --surface2: #232326;
  --border: rgba(255,255,255,0.08);
  --border2: rgba(255,255,255,0.14);
  --text: #f0efe8;
  --text2: #8a8a8f;
  --text3: #55555a;
  --accent: #e8e0c8;
  --green: #4ade80;
  --green-dim: rgba(74,222,128,0.12);
  --amber: #fbbf24;
  --amber-dim: rgba(251,191,36,0.12);
  --red: #f87171;
  --red-dim: rgba(248,113,113,0.12);
  --blue: #60a5fa;
  --blue-dim: rgba(96,165,250,0.12);
  --radius: 10px;
  --radius-lg: 16px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans TC', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.6;
}

/* Layout */
.shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 220px;
  flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 1.5rem 0;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 10;
}
.main { margin-left: 220px; flex: 1; padding: 2rem 2.5rem; max-width: 860px; }
.logo {
  padding: 0 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}
.logo-mark {
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text2);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.logo-name { font-size: 15px; font-weight: 700; letter-spacing: -0.01em; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 1.25rem;
  color: var(--text2);
  cursor: pointer;
  font-size: 13.5px;
  border-left: 2px solid transparent;
  transition: all 0.15s;
  user-select: none;
}
.nav-item:hover { color: var(--text); background: rgba(255,255,255,0.03); }
.nav-item.active { color: var(--text); border-left-color: var(--accent); background: rgba(255,255,255,0.04); }
.nav-icon { font-size: 15px; width: 18px; text-align: center; }
.nav-divider { height: 1px; background: var(--border); margin: 0.75rem 1.25rem; }
.status-dot {
  width: 7px; height: 7px; border-radius: 50%;
  margin-left: auto; flex-shrink: 0;
}
.status-dot.online { background: var(--green); box-shadow: 0 0 6px var(--green); }
.status-dot.offline { background: var(--text3); }
.db-status { padding: 0 1.25rem; margin-top: auto; font-size: 12px; color: var(--text3); display: flex; align-items: center; gap: 6px; }

/* Pages */
.page { display: none; }
.page.active { display: block; }
.page-header { margin-bottom: 1.75rem; }
.page-title { font-size: 22px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 4px; }
.page-sub { font-size: 13px; color: var(--text2); }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}
.card-title { font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text2); margin-bottom: 1rem; font-family: 'DM Mono', monospace; }

/* Forms */
.field { margin-bottom: 1rem; }
.field label { display: block; font-size: 12px; color: var(--text2); margin-bottom: 6px; letter-spacing: 0.04em; }
.field input, .field select, .field textarea {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 9px 12px;
  color: var(--text);
  font-family: 'Noto Sans TC', sans-serif;
  font-size: 14px;
  transition: border-color 0.15s;
  outline: none;
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--border2);
}
.field input[readonly] {
  background: rgba(255,255,255,0.03);
  color: var(--text3);
  cursor: not-allowed;
}
.field select { cursor: pointer; }
option { background: #1a1a1c; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }

/* User buttons */
.user-btn-row { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 1.5rem; }
.user-btn {
  padding: 10px 22px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-family: 'Noto Sans TC', sans-serif;
  font-size: 14px;
  font-weight: 500;
  transition: transform 0.12s, box-shadow 0.12s;
  position: relative;
}
.user-btn::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 999px;
  border: 2px solid transparent;
  transition: border-color 0.15s;
}
.user-btn.selected::after { border-color: #fff; }
.user-btn:active { transform: scale(0.95); }

/* Checkbox items */
.check-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.check-item {
  display: flex; align-items: center; gap: 9px;
  padding: 10px 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
  transition: border-color 0.15s, background 0.15s;
  user-select: none;
}
.check-item input[type=checkbox] { accent-color: var(--green); cursor: pointer; width: auto; }
.check-item.checked { border-color: rgba(74,222,128,0.35); background: rgba(74,222,128,0.06); }

/* Upload */
.upload-zone {
  border: 1px dashed var(--border2);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  cursor: pointer;
  color: var(--text2);
  font-size: 13px;
  transition: background 0.15s, border-color 0.15s;
}
.upload-zone:hover { background: rgba(255,255,255,0.03); border-color: rgba(255,255,255,0.2); }
.upload-zone img { max-height: 100px; max-width: 100%; border-radius: 6px; margin-bottom: 8px; display: block; margin: 0 auto 8px; }
.ocr-badge {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 8px; padding: 6px 12px;
  background: var(--blue-dim); border-radius: var(--radius);
  font-size: 12px; color: var(--blue);
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  font-family: 'Noto Sans TC', sans-serif;
  font-size: 14px;
  font-weight: 500;
  transition: opacity 0.15s, transform 0.1s;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--accent); color: #0f0f10; width: 100%; padding: 12px; margin-top: 0.5rem; }
.btn-primary:hover { opacity: 0.88; }
.btn-primary:disabled { opacity: 0.35; cursor: not-allowed; }
.btn-ghost { background: transparent; border: 1px solid var(--border2); color: var(--text); width: 100%; margin-top: 8px; }
.btn-ghost:hover { background: rgba(255,255,255,0.05); }
.btn-sm { padding: 6px 14px; font-size: 12px; }
.btn-danger { background: var(--red-dim); border: 1px solid rgba(248,113,113,0.25); color: var(--red); }

/* Records */
.record-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  margin-bottom: 8px;
  transition: border-color 0.15s;
}
.record-card:hover { border-color: var(--border2); }
.record-card.selectable { cursor: pointer; }
.record-card.selected { border-color: rgba(232,224,200,0.4); background: rgba(232,224,200,0.04); }
.record-top { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.user-pip { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; }
.record-name { font-size: 14px; font-weight: 500; }
.record-time { font-family: 'DM Mono', monospace; font-size: 11px; color: var(--text2); margin-left: auto; }
.badge {
  padding: 2px 9px; border-radius: 999px;
  font-size: 11px; font-weight: 500; letter-spacing: 0.03em;
}
.badge-pending { background: var(--amber-dim); color: var(--amber); }
.badge-done { background: var(--green-dim); color: var(--green); }
.record-meta { display: flex; flex-wrap: wrap; gap: 12px; }
.meta { font-size: 12px; color: var(--text2); }
.meta b { color: var(--text); font-weight: 500; }
.del-btn {
  background: none; border: none; cursor: pointer;
  color: var(--text3); font-size: 13px;
  padding: 2px 6px; border-radius: 4px;
  transition: color 0.15s;
}
.del-btn:hover { color: var(--red); }

/* Stats */
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 1.5rem; }
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.25rem;
}
.stat-label { font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text2); font-family: 'DM Mono', monospace; margin-bottom: 6px; }
.stat-val { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; }
.stat-unit { font-size: 12px; color: var(--text2); font-weight: 400; margin-left: 2px; }

/* User color management */
.color-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.color-dot {
  width: 26px; height: 26px; border-radius: 50%; cursor: pointer;
  border: 2px solid transparent; transition: transform 0.1s;
  outline: none;
}
.color-dot:hover { transform: scale(1.15); }
.color-dot.sel { border-color: #fff; }
.user-list-item {
  display: flex; align-items: center; gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin-bottom: 8px;
}
.user-circle {
  width: 36px; height: 36px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; flex-shrink: 0;
}
.add-row { display: flex; gap: 8px; }
.add-row input { flex: 1; }

/* Filter bar */
.filter-bar { display: flex; gap: 8px; margin-bottom: 1rem; flex-wrap: wrap; }
.filter-bar select {
  width: auto;
  padding: 7px 10px;
  font-size: 13px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: 'Noto Sans TC', sans-serif;
  cursor: pointer;
}

/* Empty */
.empty { text-align: center; padding: 3rem 1rem; color: var(--text3); font-size: 13px; }

/* Modal */
.modal-bg {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 100;
  display: none;
  align-items: center; justify-content: center;
}
.modal-bg.open { display: flex; }
.modal {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  width: 340px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
}
.modal h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.modal p { font-size: 13px; color: var(--text2); margin-bottom: 1.25rem; }
.modal-btns { display: flex; gap: 8px; }
.modal-btns button { flex: 1; }

/* Toast */
.toast {
  position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%);
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 10px 20px;
  font-size: 13px;
  opacity: 0;
  transition: opacity 0.25s, transform 0.25s;
  pointer-events: none;
  z-index: 200;
  white-space: nowrap;
  box-shadow: 0 8px 30px rgba(0,0,0,0.4);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(-4px); }

/* Spinner */
.spinner {
  display: inline-block; width: 13px; height: 13px;
  border: 2px solid var(--border2);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Loading overlay */
.loading-overlay {
  position: fixed; inset: 0;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  z-index: 300;
  transition: opacity 0.4s;
}
.loading-overlay.hidden { opacity: 0; pointer-events: none; }
.loading-text { font-family: 'DM Mono', monospace; font-size: 12px; letter-spacing: 0.1em; color: var(--text2); }

/* Scrollbar */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--surface2); border-radius: 3px; }

/* Mobile */
@media (max-width: 640px) {
  .sidebar { width: 100%; height: auto; position: static; flex-direction: row; overflow-x: auto; padding: 0.5rem; border-right: none; border-bottom: 1px solid var(--border); }
  .main { margin-left: 0; padding: 1rem; }
  .logo { display: none; }
  .nav-item { padding: 8px 14px; border-left: none; border-bottom: 2px solid transparent; white-space: nowrap; }
  .nav-item.active { border-left-color: transparent; border-bottom-color: var(--accent); }
  .nav-divider { display: none; }
  .db-status { display: none; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .grid2, .grid3 { grid-template-columns: 1fr; }
}