/* ===== GIAO DIỆN TỐI ===== */
[data-theme="dark"] {
    /* Primary Colors - Deep Purple (Softer for Dark Mode) */
    --color-primary: #22d3ee;
    --color-primary-hover: #7c3aed;
    --color-secondary: #e879f9;
    --color-primary-rgb: 34, 211, 238;

    /* Status Colors */
    --color-success: #34d399;
    --color-warning: #fbbf24;
    --color-error: #f87171;
    --color-info: #60a5fa;

    /* Background Colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-elevated: #1e293b;

    /* Text Colors - Improved Contrast */
    --text-primary: #f1f5f9;
    --text-secondary: #e2e8f0;
    /* Increased from #cbd5e1 for better contrast */
    --text-tertiary: #cbd5e1;
    /* Increased from #94a3b8 for readability */
    --btn-hover-color: #ffffff;

    /* Border Colors */
    --border-primary: #334155;
    --border-secondary: #475569;

    /* Glass Morphism */
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(148, 163, 184, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.6);

}

/* Sửa màu nút chế độ tối */
[data-theme="dark"] .btn {
    color: #fff;
}

[data-theme="dark"] .btn:hover {
    background-color: var(--bg-tertiary);
}

[data-theme="dark"] .btn-primary {
    background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 100%);
    color: #ffffff;
}