/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f1117;
  --bg-surface: #181a20;
  --bg-raised: #1e2028;
  --bg-hover: #252730;
  --border: #2a2d38;
  --text: #e4e4e7;
  --text-muted: #9395a0;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --green: #22c55e;
  --yellow: #eab308;
  --red: #ef4444;
  --radius: 8px;
  --sidebar-w: 240px;
}

html { font-size: 15px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* === App Layout === */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* === Sidebar === */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
}

.sidebar-brand {
  padding: 1.25rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.brand-icon {
  width: 32px; height: 32px;
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

.brand-text { font-weight: 600; font-size: 1rem; }

.sidebar-nav {
  flex: 1;
  padding: 0.75rem 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: all 0.15s;
}

.nav-item:hover { background: var(--bg-hover); color: var(--text); }
.nav-item.active { background: var(--bg-hover); color: var(--accent); font-weight: 500; }
.nav-icon { width: 1.25rem; text-align: center; font-size: 0.85rem; }

.sidebar-footer {
  padding: 0.75rem 0.5rem;
  border-top: 1px solid var(--border);
}

/* === Main Area === */
.main-area {
  flex: 1;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
}

/* === Topbar === */
.topbar {
  padding: 1rem 1.5rem;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-title { font-size: 1.15rem; font-weight: 600; }
.topbar-user { color: var(--text-muted); font-size: 0.85rem; }

/* === Content === */
.content {
  padding: 1.5rem;
  flex: 1;
}

/* === Auth Layout === */
.auth-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
}

/* === Cards === */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.card-title { font-size: 0.95rem; font-weight: 600; }

/* === Stat Cards === */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
}

.stat-value { font-size: 1.75rem; font-weight: 700; margin-bottom: 0.25rem; }
.stat-label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.stat-sublabel { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.25rem; }
.stat-good .stat-value { color: var(--green); }
.stat-warn .stat-value { color: var(--yellow); }
.stat-bad .stat-value { color: var(--red); }

/* === Alerts / Flash === */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: 0.9rem;
  border: 1px solid;
}

.alert-success { background: rgba(34,197,94,0.1); border-color: var(--green); color: var(--green); }
.alert-error { background: rgba(239,68,68,0.1); border-color: var(--red); color: var(--red); }
.alert-info { background: rgba(99,102,241,0.1); border-color: var(--accent); color: var(--accent); }

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

th, td {
  padding: 0.65rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

tr:hover td { background: var(--bg-hover); }

/* === Badges === */
.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 500;
}

.badge-green { background: rgba(34,197,94,0.15); color: var(--green); }
.badge-yellow { background: rgba(234,179,8,0.15); color: var(--yellow); }
.badge-red { background: rgba(239,68,68,0.15); color: var(--red); }
.badge-gray { background: rgba(147,149,160,0.15); color: var(--text-muted); }
.badge-blue { background: rgba(99,102,241,0.15); color: var(--accent); }

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--text);
  cursor: pointer;
  transition: all 0.15s;
}

.btn:hover { background: var(--bg-hover); border-color: var(--text-muted); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn:disabled, .btn.disabled { opacity: 0.5; pointer-events: none; }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

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

.btn-danger { background: rgba(239,68,68,0.15); border-color: var(--red); color: var(--red); }
.btn-danger:hover { background: rgba(239,68,68,0.25); }

.btn-sm { padding: 0.3rem 0.6rem; font-size: 0.8rem; }

/* === Forms === */
.form-group { margin-bottom: 1rem; }

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
  color: var(--text-muted);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.55rem 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.9rem;
  font-family: inherit;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(99,102,241,0.2);
}

.form-textarea { min-height: 100px; resize: vertical; }
.form-hint { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.25rem; }
.form-check { display: flex; align-items: center; gap: 0.5rem; }

/* === Login Form === */
.login-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  width: 100%;
  max-width: 380px;
}

.login-title {
  text-align: center;
  margin-bottom: 1.5rem;
  font-size: 1.25rem;
}

/* === Log Viewer === */
.log-output {
  background: #0a0b0f;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
  font-size: 0.8rem;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 500px;
  overflow-y: auto;
  color: var(--text-muted);
}

/* === Prompt Output === */
.prompt-output {
  background: #0a0b0f;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
  font-size: 0.8rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text);
}

/* === Empty State === */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

.empty-state h2 { font-size: 1.1rem; margin-bottom: 0.5rem; color: var(--text); }
.empty-state p { font-size: 0.9rem; }

/* === Grid Layouts === */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

/* === Utility === */
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 0.8rem; }
.text-green { color: var(--green); }
.text-red { color: var(--red); }
.text-yellow { color: var(--yellow); }
.mono { font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace; }

/* === Detail list === */
.detail-list { list-style: none; }
.detail-list li {
  display: flex;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.detail-list li:last-child { border-bottom: none; }
.detail-label { width: 160px; color: var(--text-muted); flex-shrink: 0; }
.detail-value { flex: 1; }

/* === Mobile Menu Toggle === */
.mobile-toggle {
  display: none;
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 200;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 0.5rem 0.65rem;
  font-size: 1.1rem;
  cursor: pointer;
  line-height: 1;
}

/* === Responsive === */
@media (max-width: 768px) {
  .mobile-toggle { display: block; }
  .sidebar { display: none; position: fixed; z-index: 150; }
  .sidebar.open { display: flex; }
  .main-area { margin-left: 0; }
  .topbar-title { margin-left: 2.5rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}