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

:root {
  --bg: #0f1117;
  --bg-surface: #1a1d27;
  --bg-surface-2: #222535;
  --bg-surface-3: #2a2e42;
  --border: #2e3248;
  --text: #e2e4ed;
  --text-muted: #8a8fa8;
  --text-dim: #5a5f77;
  --accent: #6366f1;
  --accent-hover: #4f52d9;
  --accent-dim: rgba(99, 102, 241, 0.15);
  --green: #22c55e;
  --blue: #3b82f6;
  --yellow: #eab308;
  --red: #ef4444;
  --radius: 8px;
  --radius-sm: 4px;
  --sidebar-width: 260px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

html,
body,
#app {
  height: 100%;
  width: 100%;
  overflow: hidden;
}

/* ── Layout ────────────────────────────────────────────── */

.layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

.main-content {
  flex: 1;
  overflow-y: auto;
  padding: 32px;
}

/* ── Shared content areas ───────────────────────────────── */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 12px;
  color: var(--text-muted);
  text-align: center;
}

.empty-state h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
}

/* ── Buttons ────────────────────────────────────────────── */

.btn-primary {
  padding: 10px 20px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}

.btn-secondary {
  padding: 10px 20px;
  background: var(--bg-surface-2);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-surface-3);
}