/* LIGHT MODE (DEFAULT) */
:root {
    --bg-main: #f8fafc;
    --bg-header: rgba(248, 250, 252, 0.85);
    --card-bg: #ffffff;
    --card-inner: #f1f5f9;
    --card-border: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --accent-blue: #2563eb;
    --accent-cyan: #0284c7;
    --accent-emerald: #059669;
    --glow-effect: rgba(37, 99, 235, 0.08);
    --shadow-card: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
}

/* DARK MODE */
[data-theme="dark"] {
    --bg-main: #06090e;
    --bg-header: rgba(6, 9, 14, 0.85);
    --card-bg: #0d121d;
    --card-inner: #131b2e;
    --card-border: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-blue: #3b82f6;
    --accent-cyan: #38bdf8;
    --accent-emerald: #10b981;
    --glow-effect: rgba(56, 189, 248, 0.12);
    --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, sans-serif;
    transition: background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    letter-spacing: -0.011em;
}

/* Elegant Card Component */
.bm-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    box-shadow: var(--shadow-card);
}

.bm-card:hover {
    border-color: var(--accent-cyan);
    box-shadow: 0 12px 30px -8px var(--glow-effect);
}

/* Typography Accent */
.bm-heading {
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.bm-gradient-text {
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-main); }
::-webkit-scrollbar-thumb { background: var(--card-border); border-radius: 4px; }