:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --surface2: #243044;
  --border: #2d3f56;
  --text: #e8edf4;
  --muted: #8fa3bf;
  --primary: #3ecf8e;
  --primary-dark: #2da86e;
  --accent: #5b9fd4;
  --danger: #f07178;
  --warning: #e6c07b;
  --radius: 12px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

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

body {
  background: linear-gradient(145deg, #0b1018 0%, #152033 50%, #0f1a12 100%);
  color: var(--text);
  min-height: 100vh;
}

.hidden { display: none !important; }

/* Auth */
.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 36px;
  box-shadow: var(--shadow);
}

.brand {
  text-align: center;
  margin-bottom: 28px;
}

.brand-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), #2a9d6a);
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 12px;
}

.brand h1 { font-size: 1.5rem; font-weight: 700; }
.brand p { color: var(--muted); font-size: 0.9rem; margin-top: 4px; }

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  background: var(--surface2);
  padding: 4px;
  border-radius: 10px;
}

.tab {
  flex: 1;
  padding: 10px;
  border: none;
  background: transparent;
  color: var(--muted);
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  transition: 0.2s;
}

.tab.active {
  background: var(--primary);
  color: #0a1410;
}

.form-group { margin-bottom: 16px; }

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 6px;
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 0.95rem;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: none;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: 0.2s;
}

.btn-primary {
  background: var(--primary);
  color: #0a1410;
  width: 100%;
}

.btn-primary:hover { background: var(--primary-dark); }

.btn-secondary {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover { border-color: var(--primary); }

.btn-sm { padding: 8px 14px; font-size: 0.85rem; }

.alert {
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.alert-error {
  background: rgba(240, 113, 120, 0.15);
  border: 1px solid rgba(240, 113, 120, 0.4);
  color: #ffb4b9;
}

.alert-success {
  background: rgba(62, 207, 142, 0.12);
  border: 1px solid rgba(62, 207, 142, 0.35);
  color: #9dffc8;
}

/* App layout */
.app-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

@media (max-width: 900px) {
  .app-layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .mobile-nav { display: flex !important; }
}

.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.sidebar-brand .logo {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), #2a9d6a);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.sidebar-brand span { font-weight: 700; font-size: 1.05rem; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 10px;
  color: var(--muted);
  cursor: pointer;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  font-size: 0.95rem;
  margin-bottom: 4px;
  transition: 0.2s;
}

.nav-item:hover,
.nav-item.active {
  background: var(--surface2);
  color: var(--text);
}

.nav-item.active { border-left: 3px solid var(--primary); }

.user-box {
  margin-top: auto;
  padding: 14px;
  background: var(--surface2);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.user-box .name { font-weight: 600; font-size: 0.9rem; }
.user-box .role { color: var(--muted); font-size: 0.8rem; margin-top: 2px; }

.main {
  padding: 28px 32px;
  overflow-y: auto;
}

.mobile-nav {
  display: none;
  gap: 8px;
  padding: 12px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}

.page-header {
  margin-bottom: 28px;
}

.page-header h2 { font-size: 1.6rem; font-weight: 700; }
.page-header p { color: var(--muted); margin-top: 6px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.card-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Upload dropzone */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: 14px;
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  transition: 0.2s;
  margin-bottom: 20px;
}

.dropzone:hover,
.dropzone.dragover {
  border-color: var(--primary);
  background: rgba(62, 207, 142, 0.06);
}

.dropzone-icon { font-size: 2.5rem; margin-bottom: 10px; }
.dropzone p { color: var(--muted); font-size: 0.9rem; }
.dropzone .filename { color: var(--primary); font-weight: 600; margin-top: 8px; }

.file-list {
  list-style: none;
  margin-bottom: 16px;
  max-height: 220px;
  overflow-y: auto;
}

.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.file-item small { color: var(--muted); }

.btn-remove {
  background: transparent;
  border: none;
  color: var(--danger);
  cursor: pointer;
  font-size: 1rem;
  padding: 4px 8px;
  border-radius: 6px;
}

.btn-remove:hover { background: rgba(240, 113, 120, 0.15); }

.upload-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.upload-actions .btn-primary { flex: 1; min-width: 200px; }

.upload-progress { margin-top: 16px; }

.progress-line {
  padding: 8px 12px;
  font-size: 0.88rem;
  border-bottom: 1px solid var(--border);
}

.progress-line:last-child { border-bottom: none; }

.api-card { margin-bottom: 20px; }

.api-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.api-method {
  background: var(--primary);
  color: #0a1410;
  font-weight: 700;
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: 6px;
}

.api-url {
  flex: 1;
  font-family: "Cascadia Code", "Consolas", monospace;
  font-size: 0.88rem;
  color: var(--accent);
  word-break: break-all;
}

.api-detail { margin-bottom: 12px; }

.api-label {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 6px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.api-url,
.api-code {
  user-select: all;
  cursor: text;
}

.api-code {
  display: block;
  font-family: "Cascadia Code", "Consolas", monospace;
  font-size: 0.84rem;
  background: #0d1117;
  color: #b8d4a8;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  white-space: pre-wrap;
  word-break: break-word;
  margin-bottom: 8px;
}

.api-note {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 8px;
  line-height: 1.5;
}

.api-note code {
  color: var(--accent);
  font-size: 0.82rem;
}

.search-status {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 0.9rem;
  margin-bottom: 16px;
  background: rgba(62, 207, 142, 0.1);
  border: 1px solid rgba(62, 207, 142, 0.3);
  color: #9dffc8;
}

.result-content-full {
  max-height: none;
}

/* Table */
.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th, td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th { color: var(--muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; }

tr:hover td { background: rgba(255,255,255,0.02); }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  background: rgba(91, 159, 212, 0.2);
  color: #9fd0ff;
}

/* Search results */
.search-box {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
}

.search-box input {
  flex: 1;
  padding: 14px 18px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-size: 1rem;
}

.search-box input:focus {
  outline: none;
  border-color: var(--accent);
}

.result-item {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  margin-bottom: 14px;
}

.result-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 0.85rem;
  color: var(--muted);
}

.result-content {
  font-size: 0.9rem;
  line-height: 1.6;
  color: #c5d3e3;
  margin-bottom: 14px;
  max-height: 120px;
  overflow: hidden;
}

.product-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  margin-top: 8px;
}

.product-card .pname { font-weight: 600; color: var(--primary); }
.product-card .pscore { font-size: 0.8rem; color: var(--warning); }
.product-card .preasons { font-size: 0.82rem; color: var(--muted); margin-top: 4px; }

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--muted);
}

.empty-state .icon { font-size: 3rem; margin-bottom: 12px; opacity: 0.5; }

.loading {
  text-align: center;
  padding: 24px;
  color: var(--muted);
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 12px;
}

@keyframes spin { to { transform: rotate(360deg); } }