:root {
    --bg-app: #000000;
    --bg-sidebar: #000000;
    --bg-card: #0A0A0A;
    --bg-input: #050505;
    --border-base: #27272a;
    --border-subtle: rgba(255, 255, 255, 0.08);

    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #52525b;

    --font-sans: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-app);
    color: var(--text-primary);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
}

/* Utilities */
.l-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-base);
    border-radius: 0.75rem; /* rounded-xl */
}

.l-card-hover {
    transition: border-color 0.2s, background-color 0.2s;
}

.l-card-hover:hover {
    border-color: var(--text-muted);
    background-color: #0f0f0f;
}

.l-input {
    background-color: var(--bg-input);
    border: 1px solid var(--border-base);
    border-radius: 0.375rem; /* rounded-md */
    color: white;
    padding: 0.5rem 0.75rem;
    width: 100%;
    outline: none;
    font-size: 0.875rem;
    transition: border-color 0.2s;
}

.l-input:focus {
    border-color: var(--text-muted);
    background-color: #000000;
}

.l-btn-primary {
    background-color: white;
    color: black;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    transition: opacity 0.2s;
}

.l-btn-primary:hover {
    opacity: 0.9;
}

.l-btn-secondary {
    background-color: transparent;
    border: 1px solid var(--border-base);
    color: var(--text-primary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    transition: background-color 0.2s;
}

.l-btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.l-label {
    display: block;
    font-size: 10px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.375rem;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #333;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #444;
}

/* Chart Container */
.chart-container {
    position: relative;
    width: 100%;
}

/* Animations */
.animate-in {
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

.hidden {
    display: none !important;
}