/* Base Theme Variables */
:root {
  --bg: #0b1020;
  --bg-soft: #0f152b;
  --text: #e6e9ef;
  --muted: #aab0bc;
  --card: rgba(255, 255, 255, 0.06);
  --card-border: rgba(255, 255, 255, 0.12);
  --brand: #4f8cff;
  --brand-2: #8a5cff;
  --accent: #22c55e;
  --danger: #ef4444;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

/* Light theme overrides */
html[data-theme="light"] {
  --bg: #f6f7fb;
  --bg-soft: #ffffff;
  --text: #1b2430;
  --muted: #5b6573;
  --card: rgba(0, 0, 0, 0.04);
  --card-border: rgba(0, 0, 0, 0.08);
  --brand: #0d6efd;
  --brand-2: #6f42c1;
}

/* Global */
html, body {
  height: 100%;
}
body {
  color: var(--text);
  background: radial-gradient(1200px 600px at 10% -10%, rgba(79, 140, 255, .25), transparent 60%),
              radial-gradient(900px 500px at 100% 0%, rgba(138, 92, 255, .18), transparent 60%),
              var(--bg);
  background-attachment: fixed;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  letter-spacing: 0.2px;
}

.container {
  max-width: 1100px;
}

/* Navbar */
.navbar {
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,0));
  border-bottom: 1px solid var(--card-border);
  backdrop-filter: blur(8px);
}
.navbar .navbar-brand {
  letter-spacing: 0.3px;
  font-weight: 700;
}

/* Card / Surfaces */
.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card-header {
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,0));
  border-bottom: 1px solid var(--card-border);
  color: var(--text);
  font-weight: 600;
}

/* Buttons */
.btn-primary {
  --bs-btn-color: #fff;
  --bs-btn-bg: var(--brand);
  --bs-btn-border-color: var(--brand);
  --bs-btn-hover-bg: color-mix(in oklab, var(--brand), #000 15%);
  --bs-btn-hover-border-color: color-mix(in oklab, var(--brand), #000 20%);
  --bs-btn-focus-shadow-rgb: 79, 140, 255;
}
.btn-outline-secondary {
  --bs-btn-color: var(--text);
  --bs-btn-border-color: var(--card-border);
  --bs-btn-hover-bg: var(--card);
  --bs-btn-hover-border-color: var(--brand);
}

/* Forms */
.form-label { color: var(--muted); font-weight: 600; }
.form-control, .form-select {
  color: var(--text);
  background: var(--bg-soft);
  border: 1px solid var(--card-border);
}
.form-control:focus, .form-select:focus {
  background: var(--bg-soft);
  border-color: var(--brand);
  box-shadow: 0 0 0 .25rem rgba(79,140,255,.15);
}

/* Tables */
.table { color: var(--text); }
.table > :not(caption) > * > * { background-color: transparent; }
.table-light { background: rgba(255,255,255, .06) !important; color: var(--text); }
.table-hover > tbody > tr:hover > * { background: rgba(79, 140, 255, 0.08); }

/* Alerts */
.alert { border: 1px solid var(--card-border); border-radius: 12px; }

/* Chart container */
.chart-wrap { position: relative; height: 380px; }

/* Subtle animations */
.fade-in { animation: fade-in .3s ease-out; }
@keyframes fade-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* Theme toggle */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  color: var(--text);
  border: 1px solid var(--card-border);
  background: var(--card);
}