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

:root {
  --primary: #1e3a5f;
  --accent: #2563eb;
  --accent-light: #dbeafe;
  --success: #16a34a;
  --error: #dc2626;
  --bg: #f1f5f9;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-muted: #64748b;
  --radius: 10px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

header {
  background: var(--primary);
  color: #fff;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,.2);
}
.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 32px;
  height: 56px;
}
.logo { font-weight: 700; font-size: 1.1rem; white-space: nowrap; display: inline-flex; align-items: center; gap: 8px; }
.logo-icon { width: 20px; height: 20px; border-radius: 4px; display: inline-block; }

nav { display: flex; gap: 4px; }
.tab-btn {
  background: transparent;
  border: none;
  color: rgba(255,255,255,.7);
  padding: 6px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: .9rem;
  transition: all .15s;
}
.tab-btn:hover { background: rgba(255,255,255,.1); color: #fff; }
.tab-btn.active { background: rgba(255,255,255,.15); color: #fff; font-weight: 600; }

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 20px;
}
.tab { display: none; }
.tab.active { display: block; }

.card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 28px;
  margin-bottom: 20px;
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
}
.card h2 { font-size: 1.1rem; color: var(--primary); margin-bottom: 20px; }
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}
.card-header h2 { margin-bottom: 0; }
.card-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

/* Drop zone */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: all .2s;
  background: var(--bg);
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--accent);
  background: var(--accent-light);
}
.drop-icon { font-size: 3rem; margin-bottom: 12px; }
.drop-text { color: var(--text-muted); margin-bottom: 14px; }
.drop-hint { color: var(--text-muted); font-size: .8rem; margin-top: 12px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 6px;
  font-size: .9rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all .15s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #1d4ed8; }
.btn-outline { background: transparent; color: var(--accent); border: 1.5px solid var(--accent); }
.btn-outline:hover { background: var(--accent-light); }
.btn-sm { padding: 5px 12px; font-size: .82rem; }
.btn-group { display: flex; gap: 12px; margin-top: 20px; flex-wrap: wrap; }

/* Status */
.status-area {
  padding: 14px 18px;
  border-radius: 8px;
  margin-top: 16px;
  font-size: .9rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.status-loading { background: #eff6ff; color: #1d4ed8; border: 1px solid #bfdbfe; }
.status-success { background: #f0fdf4; color: var(--success); border: 1px solid #bbf7d0; }
.status-error { background: #fef2f2; color: var(--error); border: 1px solid #fecaca; }

/* Stats */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}
.stat {
  background: var(--bg);
  border-radius: 8px;
  padding: 14px 18px;
  border: 1px solid var(--border);
}
.stat-label { display: block; font-size: .78rem; color: var(--text-muted); margin-bottom: 4px; }
.stat-val { font-size: 1.4rem; font-weight: 700; color: var(--primary); }

/* Preview */
.result-img-wrap { overflow: hidden; border-radius: 8px; border: 1px solid var(--border); max-height: 600px; overflow-y: auto; }
.preview-img { width: 100%; display: block; }

/* Table */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
th { background: #f8fafc; color: var(--text-muted); font-weight: 600; text-align: left; padding: 10px 14px; border-bottom: 2px solid var(--border); white-space: nowrap; }
td { padding: 10px 14px; border-bottom: 1px solid var(--border); }
tr:hover td { background: #fafbfc; }
.empty { text-align: center; color: var(--text-muted); padding: 32px !important; }
.filename { max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mono { font-family: monospace; font-size: .82rem; word-break: break-all; }
.link-btn { color: var(--accent); text-decoration: none; margin-right: 8px; font-weight: 500; }
.link-btn:hover { text-decoration: underline; }

/* Search */
.search-input {
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: .88rem;
  width: 220px;
  outline: none;
  transition: border .15s;
}
.search-input:focus { border-color: var(--accent); }
.count-text { margin-top: 12px; font-size: .82rem; color: var(--text-muted); }

/* Spinner */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin .6s linear infinite;
  flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 640px) {
  header { padding: 0 12px; }
  .header-inner { gap: 12px; }
  main { padding: 16px 12px; }
  .card { padding: 18px; }
  .tab-btn { padding: 5px 10px; font-size: .82rem; }
}