/* ============================================================
   CSS VARIABLES
   ============================================================ */
:root {
  --bg:         #0d1117;
  --surface:    #161b22;
  --surface2:   #1c2230;
  --surface3:   #21262d;
  --border:     #2d333b;
  --border-dim: #1e2530;
  --accent:     #58a6ff;
  --accent2:    #79c0ff;
  --accent-dim: rgba(88,166,255,0.1);
  --green:      #3fb950;
  --purple:     #bc8cff;
  --orange:     #ffa657;
  --red:        #f85149;
  --text:       #e6edf3;
  --text-muted: #8b949e;
  --text-dim:   #6e7681;
  --radius:     8px;
  --radius-lg:  14px;
  --font:       'Inter', system-ui, -apple-system, sans-serif;
  --mono:       'JetBrains Mono', monospace;
  --sidebar-w:  220px;
  --topbar-h:   64px;
  --transition: 0.18s ease;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent2); }

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::selection { background: rgba(88,166,255,0.2); color: var(--text); }
.accent { color: var(--accent); }

/* ============================================================
   APP SHELL — sidebar + main
   ============================================================ */
.app {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ─────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border-dim);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  overflow-y: auto;
}
.sidebar-brand {
  padding: 24px 20px 16px;
  border-bottom: 1px solid var(--border-dim);
  margin-bottom: 12px;
}
.brand-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.5px;
  line-height: 1;
  display: block;
}
.brand-logo:hover { color: var(--text); }
.brand-sub {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 600;
  margin-top: 4px;
}
.sidebar-nav {
  padding: 8px 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.sidebar-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  transition: color var(--transition), background var(--transition);
}
.sidebar-link:hover { color: var(--text); background: var(--surface2); }
.sidebar-link.active { color: var(--accent); background: var(--accent-dim); }
.sidebar-icon {
  font-size: 0.85rem;
  width: 18px;
  text-align: center;
  flex-shrink: 0;
}
.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-dim);
}
.sidebar-status {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 4px;
}
.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--orange);
  flex-shrink: 0;
  animation: pulse 2.5s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}
.sidebar-updated {
  font-size: 0.7rem;
  color: var(--text-dim);
}

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

/* ── Topbar ──────────────────────────────────────────────────── */
.topbar {
  height: var(--topbar-h);
  background: rgba(13,17,23,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-dim);
  position: sticky;
  top: 0;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  gap: 16px;
}
.topbar-title {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.2px;
}
.topbar-sub {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 1px;
}
.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}
.badge-mock {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--orange);
  background: rgba(255,166,87,0.12);
  border: 1px solid rgba(255,166,87,0.25);
  padding: 3px 10px;
  border-radius: 20px;
}
.topbar-btn {
  background: var(--accent);
  color: #0d1117;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 7px 14px;
  border-radius: var(--radius);
  transition: background var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}
.topbar-btn:hover {
  background: var(--accent2);
  color: #0d1117;
  box-shadow: 0 4px 16px rgba(88,166,255,0.3);
}

/* ── Content area ────────────────────────────────────────────── */
.content {
  padding: 28px 32px 48px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ============================================================
   KPI CARDS
   ============================================================ */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.kpi-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.kpi-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--purple));
}
.kpi-card:hover {
  border-color: rgba(88,166,255,0.3);
  box-shadow: 0 8px 32px rgba(0,0,0,0.35);
}
.kpi-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 10px;
}
.kpi-value {
  font-size: 1.9rem;
  font-weight: 800;
  letter-spacing: -0.8px;
  color: var(--text);
  font-family: var(--mono);
  line-height: 1;
  margin-bottom: 10px;
}
.kpi-change {
  font-size: 0.75rem;
  font-weight: 600;
}
.kpi-change.pos { color: var(--green); }
.kpi-change.neg { color: var(--red); }

/* ============================================================
   CHART CARDS
   ============================================================ */
.charts-row {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 16px;
}
.chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: border-color var(--transition);
}
.chart-card:hover { border-color: var(--border); }
.chart-card.wide {
  /* already wider via grid */
}
.chart-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-shrink: 0;
}
.chart-title {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: -0.1px;
}
.chart-sub {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 2px;
}
.chart-wrap {
  position: relative;
  height: 220px;
  flex-shrink: 0;
}
.chart-wrap-sm {
  height: 200px;
}

/* ============================================================
   CLIENTS TABLE
   ============================================================ */
.table-wrap {
  overflow-x: auto;
}
.clients-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.83rem;
}
.clients-table thead th {
  text-align: left;
  padding: 10px 14px;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border-dim);
  white-space: nowrap;
}
.clients-table tbody tr {
  border-bottom: 1px solid var(--border-dim);
  transition: background var(--transition);
}
.clients-table tbody tr:last-child { border-bottom: none; }
.clients-table tbody tr:hover { background: var(--surface2); }
.clients-table td {
  padding: 11px 14px;
  color: var(--text-muted);
  vertical-align: middle;
}
.td-name { color: var(--text); font-weight: 500; }
.td-value {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 500;
}
.td-date {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-dim);
}
.type-tag {
  background: var(--surface3);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 2px 9px;
  border-radius: 8px;
  font-size: 0.72rem;
  font-weight: 500;
  white-space: nowrap;
}
.status-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 9px;
  border-radius: 8px;
  font-size: 0.72rem;
  font-weight: 600;
  white-space: nowrap;
}
.status-tag::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
}
.status-live {
  background: rgba(63,185,80,0.1);
  border: 1px solid rgba(63,185,80,0.25);
  color: var(--green);
}
.status-live::before { background: var(--green); }
.status-progress {
  background: rgba(255,166,87,0.1);
  border: 1px solid rgba(255,166,87,0.25);
  color: var(--orange);
}
.status-progress::before { background: var(--orange); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1200px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .charts-row { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --sidebar-w: 0px; }
  .sidebar { display: none; }
  .main { margin-left: 0; }
  .content { padding: 20px 18px 48px; }
  .topbar { padding: 0 18px; }
  .kpi-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .kpi-value { font-size: 1.5rem; }
}

@media (max-width: 480px) {
  .kpi-grid { grid-template-columns: 1fr; }
  .topbar-btn { display: none; }
}