/* ===== Kairos Trading Dashboard — Global Styles ===== */

:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-card: #1c2128;
  --bg-hover: #252c35;
  --border: #30363d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #656d76;
  --accent-blue: #58a6ff;
  --accent-green: #3fb950;
  --accent-red: #f85149;
  --accent-yellow: #d29922;
  --accent-purple: #bc8cff;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 2px 8px rgba(0,0,0,0.3);
  --transition: 0.2s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans TC', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* ===== Sidebar Navigation ===== */
.sidebar {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: 220px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 20px 0;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-logo {
  padding: 0 20px 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}

.sidebar-logo h1 {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent-blue);
  letter-spacing: 1px;
}

.sidebar-logo span {
  font-size: 11px;
  color: var(--text-muted);
}

.nav-section {
  padding: 8px 16px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: var(--transition);
  border-left: 3px solid transparent;
}

.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: rgba(88, 166, 255, 0.08);
  color: var(--accent-blue);
  border-left-color: var(--accent-blue);
}

.nav-item .icon { font-size: 16px; width: 20px; text-align: center; }

/* ===== Main Content ===== */
.main {
  margin-left: 220px;
  padding: 24px 32px;
  min-height: 100vh;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.page-header h2 {
  font-size: 22px;
  font-weight: 600;
}

.page-header .subtitle {
  color: var(--text-secondary);
  font-size: 13px;
  margin-top: 2px;
}

/* ===== Cards ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

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

.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

/* ===== Stats Row ===== */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.stat-value {
  font-size: 24px;
  font-weight: 700;
}

.stat-value.positive { color: var(--accent-green); }
.stat-value.negative { color: var(--accent-red); }

.stat-change {
  font-size: 12px;
  margin-top: 2px;
}

.stat-change.up { color: var(--accent-green); }
.stat-change.down { color: var(--accent-red); }

/* ===== Form Controls ===== */
.input-group {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

input[type="text"],
input[type="number"],
select {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 14px;
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}

input:focus, select:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(88,166,255,0.15);
}

input::placeholder { color: var(--text-muted); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.btn:hover { background: var(--bg-hover); }

.btn-primary {
  background: var(--accent-blue);
  color: #fff;
  border-color: var(--accent-blue);
}

.btn-primary:hover { background: #4090e0; }

.btn-danger {
  background: transparent;
  color: var(--accent-red);
  border-color: rgba(248,81,73,0.3);
}

.btn-danger:hover { background: rgba(248,81,73,0.1); }

.btn-success {
  background: transparent;
  color: var(--accent-green);
  border-color: rgba(63,185,80,0.3);
}

.btn-success:hover { background: rgba(63,185,80,0.1); }

.btn-sm { padding: 5px 10px; font-size: 12px; }

/* ===== Table ===== */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

thead th {
  text-align: left;
  padding: 10px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody td {
  padding: 12px 14px;
  border-bottom: 1px solid rgba(48,54,61,0.5);
  white-space: nowrap;
}

tbody tr {
  transition: var(--transition);
}

tbody tr:hover {
  background: var(--bg-hover);
}

.text-green { color: var(--accent-green); }
.text-red { color: var(--accent-red); }
.text-yellow { color: var(--accent-yellow); }
.text-blue { color: var(--accent-blue); }
.text-muted { color: var(--text-muted); }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}

.badge-green {
  background: rgba(63,185,80,0.15);
  color: var(--accent-green);
}

.badge-red {
  background: rgba(248,81,73,0.15);
  color: var(--accent-red);
}

.badge-yellow {
  background: rgba(210,153,34,0.15);
  color: var(--accent-yellow);
}

.badge-blue {
  background: rgba(88,166,255,0.15);
  color: var(--accent-blue);
}

/* ===== Quick Chips ===== */
.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  padding: 4px 12px;
  border-radius: 14px;
  font-size: 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.chip:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.chip.active {
  background: rgba(88,166,255,0.15);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

/* ===== Chart Container ===== */
.chart-container {
  width: 100%;
  height: 400px;
  background: var(--bg-primary);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.chart-container canvas {
  width: 100% !important;
  height: 100% !important;
}

/* ===== Tabs ===== */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.tab {
  padding: 10px 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

.tab:hover { color: var(--text-primary); }

.tab.active {
  color: var(--accent-blue);
  border-bottom-color: var(--accent-blue);
}

/* ===== Comparison Badge ===== */
.compare-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 4px;
}

.compare-badge.new {
  background: rgba(63,185,80,0.12);
  color: var(--accent-green);
}

.compare-badge.removed {
  background: rgba(248,81,73,0.12);
  color: var(--accent-red);
}

.compare-badge.changed {
  background: rgba(210,153,34,0.12);
  color: var(--accent-yellow);
}

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
}

.empty-state .icon { font-size: 48px; margin-bottom: 12px; }
.empty-state p { font-size: 14px; }

/* ===== Toast / Notification ===== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
  font-size: 13px;
  z-index: 1000;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s ease;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    width: 260px;
    z-index: 200;
  }

  .sidebar.open { transform: translateX(0); }

  .main { margin-left: 0; padding: 16px; }

  .mobile-header {
    display: flex !important;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    margin-bottom: 16px;
  }

  .hamburger {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
  }

  .overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 150;
    display: none;
  }

  .overlay.show { display: block; }

  .stats-row { grid-template-columns: repeat(2, 1fr); }

  .chart-container { height: 300px; }
}

@media (min-width: 769px) {
  .mobile-header { display: none !important; }
  .overlay { display: none !important; }
}