:root {
  --bg-dark: #0a1118;
  --bg-card: #121e2b;
  --bg-card-hover: #172739;
  --bg-accent: #1e3a5f;
  --primary: #00a8ff;
  --primary-hover: #0090db;
  --accent-cyan: #00e5ff;
  --accent-green: #00e676;
  --accent-amber: #ffb300;
  --accent-purple: #b388ff;
  --accent-red: #ff5252;
  --text-main: #f0f4f8;
  --text-muted: #8b9eb3;
  --border-color: #22374d;
  --border-focus: #00a8ff;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --card-radius: 14px;
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-family);
  line-height: 1.5;
  padding: 16px;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 16px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

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

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, #00a8ff, #00e5ff);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px rgba(0, 168, 255, 0.4);
}

.logo-icon svg {
  width: 24px;
  height: 24px;
  fill: #0a1118;
}

.brand-text h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-text p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  padding: 2px 8px;
  background: rgba(0, 230, 118, 0.12);
  color: var(--accent-green);
  border: 1px solid rgba(0, 230, 118, 0.3);
  border-radius: 20px;
  font-weight: 600;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.refresh-info {
  text-align: right;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.refresh-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  color: #fff;
  border: none;
  padding: 9px 18px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 10px rgba(0, 168, 255, 0.3);
}

.refresh-btn:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.refresh-btn:active {
  transform: translateY(0);
}

.refresh-btn.rotating svg {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Timeframe Bar */
.timeframe-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  gap: 12px;
  flex-wrap: wrap;
}

.timeframe-pills {
  display: inline-flex;
  background: var(--bg-card);
  padding: 4px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  gap: 4px;
}

.time-pill {
  background: transparent;
  color: var(--text-muted);
  border: none;
  padding: 8px 16px;
  border-radius: 7px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.time-pill.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 168, 255, 0.4);
}

.time-pill:hover:not(.active) {
  color: var(--text-main);
  background: rgba(255,255,255,0.05);
}

/* Site Selector Carousel / Tabs */
.site-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 20px;
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

.site-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
  user-select: none;
}

.site-tab:hover {
  background: var(--bg-card-hover);
  color: var(--text-main);
}

.site-tab.active {
  background: var(--bg-accent);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 12px rgba(0, 168, 255, 0.25);
}

.site-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

/* Executive KPI Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 18px 20px;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease;
}

.kpi-card:hover {
  transform: translateY(-2px);
  border-color: rgba(0, 168, 255, 0.4);
}

.kpi-title {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  margin-bottom: 6px;
  display: flex;
  justify-content: space-between;
}

.kpi-value {
  font-size: 1.85rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.kpi-subtext {
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.kpi-growth {
  font-weight: 600;
  color: var(--accent-green);
}

.kpi-growth.down {
  color: var(--accent-red);
}

/* Chart Container */
.chart-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 20px;
  margin-bottom: 24px;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 10px;
}

.chart-header h2 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
}

.chart-wrapper {
  position: relative;
  height: 320px;
  width: 100%;
}

/* 5 Sites Leaderboard Grid */
.leaderboard-section {
  margin-bottom: 24px;
}

.section-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sites-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
}

.site-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 18px;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.site-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.site-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.site-card-name {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
}

.site-card-domain {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.site-card-badge {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 6px;
  background: rgba(255,255,255,0.06);
  color: var(--text-muted);
}

.site-card-stats {
  display: flex;
  justify-content: space-between;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.site-stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.site-stat-val {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
}

/* Drill Down Details Grid */
.details-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
  margin-bottom: 30px;
}

.details-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 20px;
}

.details-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.rank-list {
  list-style: none;
}

.rank-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  font-size: 0.85rem;
}

.rank-item:last-child {
  border-bottom: none;
}

.rank-name {
  color: var(--text-main);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 220px;
}

.rank-val {
  font-weight: 600;
  color: var(--primary);
}

/* Device bars */
.device-bars {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.device-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
}

.device-name {
  width: 70px;
  color: var(--text-muted);
}

.device-bar-container {
  flex: 1;
  height: 8px;
  background: rgba(255,255,255,0.08);
  border-radius: 4px;
  overflow: hidden;
}

.device-bar-fill {
  height: 100%;
  border-radius: 4px;
}

.device-pct {
  width: 40px;
  text-align: right;
  font-weight: 600;
}

/* PIN Lock Screen Modal */
.lock-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 17, 24, 0.96);
  backdrop-filter: blur(12px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.lock-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  width: 100%;
  max-width: 360px;
  padding: 32px 24px;
  text-align: center;
  box-shadow: 0 10px 40px rgba(0,0,0,0.6);
}

.lock-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: rgba(0, 168, 255, 0.12);
  border: 1px solid rgba(0, 168, 255, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

.lock-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.lock-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.pin-input {
  width: 100%;
  background: var(--bg-dark);
  border: 2px solid var(--border-color);
  border-radius: 10px;
  padding: 12px;
  font-size: 1.5rem;
  letter-spacing: 0.3em;
  text-align: center;
  color: #fff;
  outline: none;
  margin-bottom: 16px;
  transition: border-color 0.2s;
}

.pin-input:focus {
  border-color: var(--primary);
}

.unlock-btn {
  width: 100%;
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 13px;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: filter 0.2s;
}

.unlock-btn:hover {
  filter: brightness(1.1);
}

.lock-error {
  color: var(--accent-red);
  font-size: 0.8rem;
  margin-top: 10px;
  min-height: 20px;
}

/* Mobile Optimizations */
@media (max-width: 768px) {
  body { padding: 10px; }
  header { padding: 12px; margin-bottom: 14px; }
  .brand-text h1 { font-size: 1.1rem; }
  .timeframe-bar { flex-direction: column; align-items: stretch; }
  .timeframe-pills { width: 100%; display: grid; grid-template-columns: repeat(4, 1fr); text-align: center; }
  .time-pill { padding: 8px 4px; font-size: 0.78rem; text-align: center; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .kpi-card { padding: 14px; }
  .kpi-value { font-size: 1.45rem; }
  .chart-wrapper { height: 240px; }
  .sites-grid { grid-template-columns: 1fr; }
  .details-grid { grid-template-columns: 1fr; }
}