:root {
  --brand: #ff9900;
  --brand-dark: #cc7a00;
  --sidebar-width: 240px;
  --sidebar-bg: #1a1a2e;
  --topbar-height: 60px;
  --card-bg: #ffffff;
  --body-bg: #f0f2f5;
}

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

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--body-bg);
  color: #333;
  display: flex;
}

/* ── SIDEBAR ──────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--sidebar-bg);
  position: fixed;
  left: 0; top: 0;
  display: flex;
  flex-direction: column;
  z-index: 1000;
  transition: transform 0.3s;
}

.sidebar-brand {
  padding: 20px 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon { font-size: 22px; }
.brand-text {
  color: var(--brand);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.5px;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 0;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 20px;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 14px;
  transition: all 0.2s;
  border-left: 3px solid transparent;
}

.nav-item:hover {
  background: rgba(255,153,0,0.1);
  color: #fff;
  border-left-color: var(--brand);
}

.nav-item.active {
  background: rgba(255,153,0,0.15);
  color: var(--brand);
  border-left-color: var(--brand);
  font-weight: 600;
}

.nav-item i { width: 18px; text-align: center; font-size: 13px; }

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.refresh-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.5);
  font-size: 11px;
}

/* ── PULSE ANIMATION ──────────────────────────────────── */
.pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #00c853;
  display: inline-block;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(0, 200, 83, 0.4); }
  70% { box-shadow: 0 0 0 8px rgba(0, 200, 83, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 200, 83, 0); }
}

/* ── MAIN CONTENT ─────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── TOPBAR ───────────────────────────────────────────── */
.topbar {
  height: var(--topbar-height);
  background: #fff;
  border-bottom: 1px solid #e0e0e0;
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.topbar-title {
  flex: 1;
  font-weight: 600;
  font-size: 16px;
  color: #333;
  margin: 0;
}

.topbar-right { display: flex; align-items: center; }

/* ── PAGES ────────────────────────────────────────────── */
.page { display: none; padding: 24px; }
.page.active { display: block; }

/* ── STAT CARDS ───────────────────────────────────────── */
.stat-card {
  background: #fff;
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  transition: transform 0.2s;
}

.stat-card:hover { transform: translateY(-2px); }

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: #1a1a2e;
  line-height: 1;
}

.stat-label {
  font-size: 12px;
  color: #888;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ── CARD PANELS ──────────────────────────────────────── */
.card-panel {
  background: #fff;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  margin-bottom: 0;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #f0f0f0;
}

.panel-header h6 {
  margin: 0;
  font-weight: 600;
  font-size: 14px;
  color: #333;
}

/* ── TABLES ───────────────────────────────────────────── */
.table { font-size: 13px; }
.table th {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #888;
  border-bottom: 2px solid #f0f0f0;
  white-space: nowrap;
}

.table td { vertical-align: middle; }
.table-hover tbody tr:hover { background: #fef9f0; }

/* ── STATUS BADGES ────────────────────────────────────── */
.badge-status {
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-finished { background: #e8f5e9; color: #2e7d32; }
.badge-running { background: #fff3e0; color: #e65100; }
.badge-draft { background: #f5f5f5; color: #666; }
.badge-paused { background: #fff8e1; color: #f57f17; }
.badge-scheduled { background: #e3f2fd; color: #1565c0; }

/* ── LIVE FEED ────────────────────────────────────────── */
.live-event {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid #f5f5f5;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

.live-event-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
}

.live-open { background: #e8f5e9; color: #2e7d32; }
.live-click { background: #fff3e0; color: #e65100; }

.live-event-body { flex: 1; min-width: 0; }
.live-event-email { font-weight: 600; font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.live-event-campaign { font-size: 12px; color: #888; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.live-event-time { font-size: 11px; color: #aaa; white-space: nowrap; }

/* ── HEATMAP ──────────────────────────────────────────── */
.heatmap-grid { display: grid; grid-template-columns: 60px repeat(24, 1fr); gap: 2px; }
.heatmap-cell {
  height: 32px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  cursor: pointer;
  transition: opacity 0.2s;
}
.heatmap-cell:hover { opacity: 0.8; }
.heatmap-label { font-size: 11px; color: #888; display: flex; align-items: center; }
.heatmap-hour { font-size: 10px; color: #888; text-align: center; margin-bottom: 4px; }

/* ── ENGAGEMENT SCORE ────────────────────────────────── */
.engagement-ring {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin: 0 auto;
}

/* ── PROGRESS BARS ────────────────────────────────────── */
.mini-progress { height: 6px; border-radius: 3px; background: #f0f0f0; overflow: hidden; }
.mini-progress-bar { height: 100%; border-radius: 3px; background: var(--brand); transition: width 0.8s ease; }

/* ── MOBILE ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
}