/* === ChainPulse Dashboard — Vercel-inspired, dark theme === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #000000;
  --surface: #0a0a0a;
  --card: #111111;
  --card-hover: #1a1a1a;
  --border: #222222;
  --border-hover: #333333;
  --text: #ededed;
  --text-secondary: #888888;
  --text-dim: #555555;
  --accent: #4d8dff;
  --accent-cyan: #00d4ff;
  --green: #00c853;
  --red: #ff4444;
  --gradient: linear-gradient(135deg, #4d8dff 0%, #00d4ff 100%);
  --sidebar-w: 220px;
  --topbar-h: 56px;
  --radius: 8px;
  --radius-lg: 12px;
  --transition: 150ms ease;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  min-height: 100vh;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

/* === Sidebar === */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: transform var(--transition);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 16px;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: -0.2px;
  height: var(--topbar-h);
  border-bottom: 1px solid var(--border);
}

.sidebar-logo { width: 24px; height: 24px; border-radius: 6px; }

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

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition);
  letter-spacing: -0.1px;
}

.nav-item:hover { background: var(--card); color: var(--text); }
.nav-item.active { background: var(--card); color: var(--text); }
.nav-icon { font-size: 15px; width: 20px; text-align: center; opacity: 0.7; }
.nav-item.active .nav-icon { opacity: 1; }
.nav-icon-svg { width: 16px; height: 16px; stroke: var(--text-secondary); stroke-width: 1.5; flex-shrink: 0; }
.nav-item:hover .nav-icon-svg { stroke: var(--text); }
.nav-item.active .nav-icon-svg { stroke: var(--text); }
.empty-icon-svg { width: 32px; height: 32px; stroke: var(--text-dim); stroke-width: 1.5; display: block; margin: 0 auto 12px; }

.sidebar-footer {
  padding: 8px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 1px;
}

/* === Main === */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-height: 100vh;
  background: var(--bg);
}

/* === Top Bar === */
.topbar {
  height: var(--topbar-h);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 50;
}

.topbar-left { display: flex; align-items: center; gap: 12px; }
.page-title { font-size: 14px; font-weight: 600; letter-spacing: -0.2px; }
.sidebar-toggle { display: none; background: none; border: none; color: var(--text); font-size: 18px; cursor: pointer; }

.wallet-input-wrap { display: flex; gap: 6px; }
.wallet-input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  color: var(--text);
  font-size: 13px;
  width: 300px;
  outline: none;
  transition: border var(--transition);
  font-family: 'Geist Mono', 'SF Mono', 'Fira Code', monospace;
}
.wallet-input:focus { border-color: var(--text-dim); }
.wallet-input::placeholder { color: var(--text-dim); }
.wallet-input.full { width: 100%; }

.btn-scan, .btn-add, .btn-refresh {
  background: var(--text);
  color: var(--bg);
  border: none;
  border-radius: 6px;
  padding: 6px 14px;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: opacity var(--transition);
  white-space: nowrap;
}
.btn-scan:hover, .btn-add:hover { opacity: 0.85; }
.btn-refresh {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-weight: 500;
}
.btn-refresh:hover { border-color: var(--border-hover); color: var(--text); }

/* === Stats === */
.stats-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 1px;
  padding: 24px 24px 0;
  background: transparent;
}

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

.stat-total { border-color: var(--border); }
.stat-label { font-size: 11px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 1px; font-weight: 500; margin-bottom: 8px; }
.stat-value { font-size: 32px; font-weight: 700; letter-spacing: -1.5px; line-height: 1; }
.stat-total .stat-value { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.stat-change { font-size: 12px; color: var(--text-dim); margin-top: 8px; }
.stat-sub { font-size: 12px; color: var(--text-dim); margin-top: 8px; }

/* === Cards === */
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin: 16px 24px 24px;
  overflow: hidden;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}

.card-header h3 { font-size: 13px; font-weight: 600; letter-spacing: -0.1px; }
.card-body { padding: 0; }

/* === Table === */
.data-table { width: 100%; border-collapse: collapse; }

.data-table th {
  text-align: left;
  padding: 10px 20px;
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 500;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.data-table td {
  padding: 12px 20px;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--card-hover); }

.token-name { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 13px; }
.token-icon {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--card);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px;
}

.chain-badge {
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.change-positive { color: var(--green); }
.change-negative { color: var(--red); }

/* === Empty State === */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-dim);
}
.empty-icon { font-size: 28px; display: block; margin-bottom: 12px; opacity: 0.5; }
.empty-state p { font-size: 13px; color: var(--text-secondary); }
.empty-sub { font-size: 12px; color: var(--text-dim); margin-top: 4px; }

/* === Wallets List === */
.wallets-list { padding: 4px; }
.wallet-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-radius: 6px;
  transition: background var(--transition);
}
.wallet-row:hover { background: var(--card-hover); }
.wallet-info { display: flex; align-items: center; gap: 10px; }
.wallet-chain-dot { width: 8px; height: 8px; border-radius: 50%; }
.wallet-addr { font-family: 'Geist Mono', 'SF Mono', monospace; font-size: 13px; color: var(--text); }
.wallet-label { font-size: 12px; color: var(--text-dim); }
.wallet-actions { display: flex; gap: 4px; opacity: 0; transition: opacity var(--transition); }
.wallet-row:hover .wallet-actions { opacity: 1; }
.btn-sm-icon {
  background: none;
  border: 1px solid transparent;
  border-radius: 4px;
  padding: 4px 6px;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 12px;
  transition: all var(--transition);
}
.btn-sm-icon:hover { border-color: var(--border); color: var(--text); background: var(--card); }

/* === Analytics === */
.analytics-input { display: flex; gap: 8px; padding: 16px 20px; }
.analytics-result { padding: 0 20px 20px; }
.analytics-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.analytics-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.analytics-card h4 { font-size: 11px; color: var(--text-dim); margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.5px; font-weight: 500; }
.analytics-row { display: flex; justify-content: space-between; padding: 5px 0; font-size: 13px; }
.analytics-row .label { color: var(--text-dim); }
.analytics-row .value { font-weight: 500; }
.analytics-row a { color: var(--accent); }

/* === Settings === */
.settings-group { padding: 4px 20px; }
.setting-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.setting-row:last-child { border-bottom: none; }
.setting-label { font-size: 13px; font-weight: 500; margin-bottom: 2px; }
.setting-desc { font-size: 12px; color: var(--text-dim); }

.toggle { position: relative; display: inline-block; width: 36px; height: 20px; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; cursor: pointer; inset: 0;
  background: var(--card); border-radius: 20px;
  border: 1px solid var(--border);
  transition: 0.2s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  height: 14px; width: 14px;
  left: 2px; bottom: 2px;
  background: var(--text-dim);
  border-radius: 50%;
  transition: 0.2s;
}
.toggle input:checked + .toggle-slider { background: var(--accent); border-color: var(--accent); }
.toggle input:checked + .toggle-slider::before { transform: translateX(16px); background: white; }

/* === Pages === */
.page { display: none; }
.page.active { display: block; }

/* === Loading === */
.loading { text-align: center; padding: 40px; color: var(--text-dim); }
.spinner {
  display: inline-block; width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--text);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin-bottom: 8px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* === Responsive === */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .sidebar-toggle { display: block; }
  .stats-row { grid-template-columns: 1fr; padding: 16px 16px 0; }
  .card { margin: 12px 16px 16px; }
  .topbar { padding: 0 16px; }
  .wallet-input { width: 160px; }
  .analytics-grid { grid-template-columns: 1fr; }
  .stat-value { font-size: 24px; }
}

/* === Scrollbar === */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* === Selection === */
::selection { background: rgba(77,141,255,0.2); }