:root {
  --bg: #0f0f14;
  --bg-panel: #1a1a24;
  --bg-card: #22222e;
  --bg-hover: #2a2a38;
  --border: #33334a;
  --text: #e4e4ef;
  --text-dim: #8888a0;
  --text-faint: #555570;
  --accent: #6366f1;
  --accent-hover: #7c7ff5;
  --accent-dim: #3a3d6e;
  --danger: #ef4444;
  --danger-hover: #f65858;
  --success: #22c55e;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow: 0 2px 8px rgba(0,0,0,0.3);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

/* --- Login --- */
.login-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}
.login-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 360px;
  box-shadow: var(--shadow);
}
.login-card h1 { font-size: 24px; margin-bottom: 8px; }
.login-card p { color: var(--text-dim); margin-bottom: 24px; }
.login-card input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  margin-bottom: 12px;
}
.login-card input:focus { outline: none; border-color: var(--accent); }
.login-error { color: var(--danger); font-size: 13px; margin-bottom: 12px; }

/* --- Buttons --- */
button, .btn {
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: background 0.15s;
}
.btn-primary { background: var(--accent); color: white; width: 100%; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
.btn-danger:hover { background: var(--danger); color: white; }
.btn-ghost { background: transparent; color: var(--text-dim); }
.btn-ghost:hover { background: var(--bg-hover); color: var(--text); }

/* --- Layout --- */
.app {
  display: grid;
  grid-template-columns: 280px 1fr;
  grid-template-rows: auto 1fr;
  height: 100vh;
}

/* --- Top bar --- */
.topbar {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 20px;
  height: 56px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
}
.topbar h1 { font-size: 18px; font-weight: 600; }
.topbar .stats { display: flex; gap: 20px; margin-left: auto; }
.stat-item { display: flex; gap: 6px; align-items: baseline; }
.stat-label { color: var(--text-faint); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
.stat-value { color: var(--text); font-weight: 600; font-size: 15px; }
.topbar .search-wrap { flex: 1; max-width: 500px; }
.topbar .search-wrap input {
  width: 100%;
  padding: 8px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
}
.topbar .search-wrap input:focus { outline: none; border-color: var(--accent); }
.topbar .actions { display: flex; gap: 8px; }

/* --- Sidebar --- */
.sidebar {
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 12px 0;
}
.sidebar-section { margin-bottom: 8px; }
.sidebar-header {
  padding: 6px 16px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-faint);
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}
.sidebar-header:hover { color: var(--text-dim); }
.sidebar-header .chevron { font-size: 10px; transition: transform 0.15s; }
.sidebar-header.collapsed .chevron { transform: rotate(-90deg); }
.sidebar-item {
  padding: 6px 16px 6px 32px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
}
.sidebar-item:hover { background: var(--bg-hover); color: var(--text); }
.sidebar-item.active { background: var(--accent-dim); color: var(--text); }
.sidebar-item .count {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-faint);
  background: var(--bg);
  padding: 1px 6px;
  border-radius: 10px;
}
.sidebar-item.active .count { color: var(--text); }
.sidebar-item.all { padding-left: 16px; font-weight: 500; }

/* --- Main content --- */
.main {
  overflow-y: auto;
  padding: 20px 24px;
}
.main-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.main-header h2 { font-size: 20px; font-weight: 600; }
.main-header .breadcrumb { color: var(--text-faint); font-size: 14px; }
.main-header .actions { margin-left: auto; display: flex; gap: 8px; }

/* --- Memory cards --- */
.memory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 16px;
}
.memory-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.memory-card:hover { border-color: var(--accent); background: var(--bg-hover); }
.memory-card .label { font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.memory-card .content { color: var(--text-dim); font-size: 13px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.memory-card .meta { display: flex; gap: 10px; margin-top: 10px; font-size: 11px; color: var(--text-faint); }
.memory-card .tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 8px; }
.tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  background: var(--accent-dim);
  color: var(--text);
}
.score-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  background: var(--success);
  color: var(--bg);
  font-weight: 600;
}

/* --- Memory detail --- */
.detail-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}
.detail-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 720px;
  max-height: 85vh;
  overflow-y: auto;
  padding: 28px;
  box-shadow: var(--shadow);
}
.detail-header { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 20px; }
.detail-header h2 { font-size: 22px; flex: 1; }
.detail-header .close { font-size: 22px; cursor: pointer; color: var(--text-faint); background: none; border: none; padding: 0; }
.detail-header .close:hover { color: var(--text); }
.detail-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 20px; }
.detail-meta .field { }
.detail-meta .field-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-faint); margin-bottom: 4px; }
.detail-meta .field-value { font-size: 14px; color: var(--text); }
.detail-content {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 14px;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
  margin-bottom: 20px;
}
.detail-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 20px; }
.detail-actions { display: flex; gap: 10px; }

/* --- Modal form --- */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-faint); margin-bottom: 6px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--accent); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* --- Search results --- */
.search-results { display: flex; flex-direction: column; gap: 12px; }
.search-result {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  cursor: pointer;
}
.search-result:hover { border-color: var(--accent); }
.search-result .top { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.search-result .label { font-weight: 600; font-size: 14px; }
.search-result .content { color: var(--text-dim); font-size: 13px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.search-result .meta { display: flex; gap: 10px; margin-top: 8px; font-size: 11px; color: var(--text-faint); }

/* --- Empty state --- */
.empty { text-align: center; padding: 60px 20px; color: var(--text-faint); }
.empty h3 { font-size: 18px; margin-bottom: 8px; }
.empty p { font-size: 14px; }

/* --- Search filters --- */
.search-filters {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 20px;
}
.filter-row {
  display: flex;
  gap: 16px;
  align-items: flex-end;
  flex-wrap: wrap;
}
.filter-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 140px;
}
.filter-group label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-faint);
}
.filter-group select {
  padding: 6px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
}
.filter-group select:focus { outline: none; border-color: var(--accent); }
.filter-group select:disabled { opacity: 0.5; cursor: not-allowed; }
.filter-group input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  outline: none;
  margin-top: 6px;
}
.filter-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}
.filter-group input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: none;
}
.filter-reset { margin-bottom: 2px; }
.filter-summary {
  margin-top: 10px;
  font-size: 12px;
  color: var(--text-faint);
}

/* --- Usage gauges (RAM / disk) --- */
.usage-gauge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 11px;
}
.usage-gauge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.6);
  animation: usage-pulse 1.8s ease-out infinite;
}
.usage-gauge-warn .usage-gauge-dot { background: #eab308; box-shadow: 0 0 0 0 rgba(234, 179, 8, 0.6); animation-name: usage-pulse-warn; }
.usage-gauge-danger .usage-gauge-dot { background: var(--danger); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6); animation-name: usage-pulse-danger; }
@keyframes usage-pulse {
  0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.55); }
  70% { box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}
@keyframes usage-pulse-warn {
  0% { box-shadow: 0 0 0 0 rgba(234, 179, 8, 0.55); }
  70% { box-shadow: 0 0 0 6px rgba(234, 179, 8, 0); }
  100% { box-shadow: 0 0 0 0 rgba(234, 179, 8, 0); }
}
@keyframes usage-pulse-danger {
  0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.55); }
  70% { box-shadow: 0 0 0 6px rgba(239, 68, 68, 0); }
  100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}
.usage-gauge-label {
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}
.usage-gauge-track {
  position: relative;
  width: 64px;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}
.usage-gauge-fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-hover));
  transition: width 0.5s ease;
  background-size: 200% 100%;
  animation: usage-shimmer 3s linear infinite;
}
.usage-gauge-track-indeterminate {
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  background-size: 50% 100%;
  animation: usage-scan 1.6s ease-in-out infinite;
}
@keyframes usage-scan {
  0% { background-position: -100% 0; }
  100% { background-position: 200% 0; }
}
.usage-gauge-warn .usage-gauge-fill { background: linear-gradient(90deg, #ca8a04, #eab308); background-size: 200% 100%; }
.usage-gauge-danger .usage-gauge-fill { background: linear-gradient(90deg, var(--danger-hover), var(--danger)); background-size: 200% 100%; }
@keyframes usage-shimmer {
  0% { background-position: 0% 0%; }
  100% { background-position: 200% 0%; }
}
.usage-gauge-value {
  color: var(--text-dim);
  font-weight: 600;
  white-space: nowrap;
}

/* --- Sidebar summary --- */
.sidebar-summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
}
.sidebar-summary-item {
  background: var(--bg-panel);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.sidebar-summary-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.sidebar-summary-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-faint);
}

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-faint); }