:root {
  --bg: #f0f4f8;
  --bg-accent: linear-gradient(135deg, #eef2ff 0%, #f0fdf4 45%, #f8fafc 100%);
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-muted: #64748b;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-soft: #eef2ff;
  --success: #059669;
  --success-soft: #ecfdf5;
  --warning: #d97706;
  --warning-soft: #fffbeb;
  --danger: #dc2626;
  --danger-soft: #fef2f2;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.1);
  --radius: 14px;
  --radius-sm: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  background: var(--bg);
  background-image: var(--bg-accent);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.5;
}

.hidden { display: none !important; }

.muted { color: var(--text-muted); font-size: 13px; margin-left: 8px; }

/* ── Login ── */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-lg);
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 8px;
}

.login-brand-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}

.login-brand-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.login-box h1 { margin: 0; font-size: 1.35rem; }

.login-box label {
  display: block;
  margin: 20px 0 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}

.login-box input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-top: 4px;
  font: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.login-box input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.login-box button {
  width: 100%;
  margin-top: 16px;
  padding: 12px;
  border: none;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #4f46e5, #6366f1);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform 0.1s, box-shadow 0.15s;
}

.login-box button:hover {
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
}

.hint { font-size: 12px; color: var(--text-muted); margin-top: 14px; }

/* ── App shell ── */
.app { min-height: 100vh; display: flex; flex-direction: column; }

.top {
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(12px);
  color: #fff;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-md);
}

.top-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.top-logo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}

.top-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.btn-link {
  display: inline-flex;
  align-items: center;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--border);
  transition: color 0.15s, background 0.15s;
}

.btn-link:hover {
  color: var(--text);
  background: var(--surface2);
}

.top-title { font-weight: 700; font-size: 1.05rem; letter-spacing: -0.02em; }

.top-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.top button,
.toolbar button,
.form-actions button,
#test-run {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 14px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.15s, transform 0.1s;
}

.top button:hover,
.toolbar button:hover,
.form-actions button:hover,
#test-run:hover {
  background: var(--primary-hover);
}

.top button.ghost {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.top button.ghost:hover { background: rgba(255, 255, 255, 0.18); }

.admin-version {
  margin-left: 6px;
  font-size: 10px;
  font-weight: 600;
  background: rgba(99, 102, 241, 0.35);
  color: #e0e7ff;
  padding: 3px 8px;
  border-radius: 999px;
  vertical-align: middle;
}

/* ── Tabs ── */
.tabs {
  display: flex;
  gap: 6px;
  padding: 10px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
}

.tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  background: transparent;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  transition: background 0.15s, color 0.15s;
}

.tab svg { opacity: 0.7; flex-shrink: 0; }

.tab:hover { background: var(--surface-2); color: var(--text); }

.tab.active {
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 600;
}

.tab.active svg { opacity: 1; stroke: var(--primary); }

/* ── Main ── */
.main { flex: 1; padding: 20px; }

.panel { max-width: 1280px; margin: 0 auto; }

.panel-hint {
  font-size: 13px;
  line-height: 1.5;
  color: #92400e;
  background: var(--warning-soft);
  border: 1px solid #fcd34d;
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin: 0 0 16px;
}

.panel-hint code { font-size: 12px; background: rgba(0,0,0,0.05); padding: 1px 5px; border-radius: 4px; }

/* ── Stats grid ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s, box-shadow 0.15s;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon.indigo { background: #eef2ff; color: #4f46e5; }
.stat-icon.emerald { background: #ecfdf5; color: #059669; }
.stat-icon.sky { background: #e0f2fe; color: #0284c7; }
.stat-icon.amber { background: #fffbeb; color: #d97706; }
.stat-icon.rose { background: #fff1f2; color: #e11d48; }
.stat-icon.violet { background: #f5f3ff; color: #7c3aed; }
.stat-icon.slate { background: #f1f5f9; color: #475569; }

.stat-body { min-width: 0; flex: 1; }

.stat-card .stat-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  line-height: 1.35;
  margin-bottom: 4px;
}

.stat-card strong {
  display: block;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.stat-card .stat-sub {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ── Info cards ── */
.info-section { display: flex; flex-direction: column; gap: 14px; }

.info-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  font-size: 14px;
  line-height: 1.55;
  box-shadow: var(--shadow-sm);
}

.info-box-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 15px;
  font-weight: 700;
}

.info-box-header svg { color: var(--primary); flex-shrink: 0; }

/* Pipeline sources */
.source-pipeline {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.source-step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.source-step-num {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.source-step-body { flex: 1; min-width: 0; }

.source-step-body b { font-weight: 600; }

.source-step-meta {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

.info-footnote {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

.info-footnote code {
  font-size: 11px;
  background: var(--surface-2);
  padding: 2px 6px;
  border-radius: 4px;
}

/* LLM status */
.llm-status {
  display: flex;
  align-items: center;
  gap: 12px;
}

.llm-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 4px var(--success-soft);
  flex-shrink: 0;
}

.llm-dot.error {
  background: var(--danger);
  box-shadow: 0 0 0 4px var(--danger-soft);
}

.llm-text strong { display: block; font-size: 14px; }

.llm-text small { color: var(--text-muted); font-size: 12px; }

/* ── Toolbar & lists ── */
.toolbar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
  align-items: center;
}

.toolbar input,
.toolbar select,
#test-ru {
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  min-width: 160px;
  font: inherit;
  background: var(--surface);
}

.toolbar input:focus,
.toolbar select:focus,
.editor input:focus,
.editor textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

.file-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 14px;
  background: var(--success);
  color: #fff;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
}

.toolbar-wrap {
  flex-wrap: wrap;
  align-items: center;
  background: var(--primary-soft);
  padding: 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  border: 1px solid #c7d2fe;
}

.meta-inline {
  font-size: 13px;
  color: var(--text);
  font-weight: 600;
  margin: 0 6px;
}

.toolbar-wrap button {
  padding: 7px 12px;
  border: none;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  font-size: 13px;
}

.toolbar-wrap button.ghost {
  background: var(--surface);
  color: var(--primary);
  border: 1px solid var(--primary);
}

.toolbar-wrap button:disabled { opacity: 0.35; }

.list-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

.pager { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }

.pager button {
  padding: 6px 12px;
  border: 1px solid var(--primary);
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  font-size: 13px;
}

.pager button.ghost {
  background: var(--surface);
  color: var(--primary);
}

.pager button:disabled { opacity: 0.35; cursor: default; }

.page-num {
  min-width: 4.5em;
  text-align: center;
  font-weight: 600;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 14px;
  min-height: 420px;
}

@media (max-width: 900px) {
  .split { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
}

.list {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: auto;
  max-height: 70vh;
  box-shadow: var(--shadow-sm);
}

.list-item {
  padding: 11px 14px;
  border-bottom: 1px solid #f1f5f9;
  cursor: pointer;
  transition: background 0.1s;
}

.list-item:hover { background: #f8fafc; }

.list-item.active {
  background: var(--primary-soft);
  border-left: 3px solid var(--primary);
  padding-left: 11px;
}

.list-item small { color: var(--text-muted); display: block; margin-top: 3px; font-size: 12px; }

.editor {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  overflow: auto;
  max-height: 70vh;
  box-shadow: var(--shadow-sm);
}

.editor h3 {
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
}

.editor label {
  display: block;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
}

.editor input,
.editor textarea,
.editor select {
  width: 100%;
  margin-top: 4px;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font: inherit;
  color: var(--text);
}

.form-actions { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }

.form-actions .danger { background: var(--danger); }

.form-actions .danger:hover { background: #b91c1c; }

.chip-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip-list li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 14px;
  display: flex;
  gap: 8px;
  align-items: center;
  box-shadow: var(--shadow-sm);
}

.chip-list button {
  border: none;
  background: transparent;
  color: var(--danger);
  cursor: pointer;
  font-weight: 600;
}

#panel-test label {
  display: block;
  font-weight: 500;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

#panel-test input { width: 100%; max-width: 480px; }

.test-result {
  margin-top: 14px;
  background: #0f172a;
  color: #e2e8f0;
  padding: 16px;
  border-radius: var(--radius-sm);
  white-space: pre-wrap;
  min-height: 100px;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 13px;
  line-height: 1.5;
  box-shadow: var(--shadow-md);
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  background: #0f172a;
  color: #fff;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  z-index: 9999;
  box-shadow: var(--shadow-lg);
  font-size: 14px;
  font-weight: 500;
}

.toast.error { background: var(--danger); }