:root {
  --primary: #6366f1;
  --bg: #0b0f19;
  --bg-secondary: #111827;
  --surface: rgba(255, 255, 255, 0.05);
  --text: #e5e7eb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --border: rgba(255, 255, 255, 0.08);
  --success: #22c55e;
  --error: #ef4444;
  --warning: #f59e0b;
  --accent: #8b5cf6;
  --radius: 16px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

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

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

.hidden { display: none !important; }

.login-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background: radial-gradient(circle at top, rgba(99, 102, 241, 0.15), transparent 45%), var(--bg);
}

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

.brand {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-bottom: 28px;
}

.brand-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 14px;
}

.brand-icon.sm { width: 40px; height: 40px; font-size: 12px; }

.brand h1 { font-size: 22px; margin-bottom: 4px; }
.brand p, .sidebar-brand span, #page-subtitle { color: var(--text-secondary); font-size: 14px; }

label { display: block; margin-bottom: 8px; color: var(--text-secondary); font-size: 14px; }

input, select {
  width: 100%;
  min-height: 44px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  padding: 12px 14px;
  margin-bottom: 16px;
}

input:focus { outline: 2px solid rgba(99, 102, 241, 0.45); border-color: var(--primary); }

.btn {
  min-height: 44px;
  border-radius: 12px;
  border: none;
  padding: 0 16px;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary { background: var(--primary); color: white; width: 100%; }
.btn-secondary { background: rgba(99, 102, 241, 0.15); color: var(--text); border: 1px solid var(--border); }
.btn-ghost { background: transparent; color: var(--text-secondary); border: 1px solid var(--border); width: 100%; }

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

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

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

.sidebar-brand { display: flex; gap: 12px; align-items: center; }
.sidebar-brand strong { display: block; }

.nav { display: flex; flex-direction: column; gap: 8px; flex: 1; }

.nav-link {
  min-height: 44px;
  display: flex;
  align-items: center;
  padding: 0 14px;
  border-radius: 12px;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
}

.nav-link:hover, .nav-link.active {
  background: rgba(99, 102, 241, 0.12);
  color: var(--text);
}

.main { padding: 24px; }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

#page-title { font-size: 28px; margin-bottom: 4px; }

.page { display: none; }
.page.active { display: block; }

.grid {
  display: grid;
  gap: 16px;
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

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

.card h3 { font-size: 14px; color: var(--text-secondary); margin-bottom: 8px; font-weight: 500; }
.card .value { font-size: 28px; font-weight: 700; }
.card .meta { margin-top: 8px; color: var(--text-muted); font-size: 13px; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.badge.ok { background: rgba(34, 197, 94, 0.15); color: var(--success); }
.badge.warn { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.badge.err { background: rgba(239, 68, 68, 0.15); color: var(--error); }
.badge.neutral { background: rgba(255, 255, 255, 0.08); color: var(--text-secondary); }

.table-wrap { overflow: auto; border-radius: var(--radius); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; min-width: 720px; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--border); font-size: 14px; }
th { color: var(--text-secondary); font-weight: 600; background: rgba(255, 255, 255, 0.02); }
td { color: var(--text); }

.preview {
  margin-top: 12px;
  padding: 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}

.log-view {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  line-height: 1.6;
  max-height: 480px;
  overflow: auto;
  padding: 16px;
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border);
}

.empty {
  text-align: center;
  padding: 48px 16px;
  color: var(--text-muted);
}

.loading { color: var(--text-secondary); padding: 24px; }

@media (max-width: 960px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { border-right: none; border-bottom: 1px solid var(--border); }
  .nav { flex-direction: row; flex-wrap: wrap; }
  .logout-btn { width: auto; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}