:root {
    --bg-color: #0f172a;
    --panel-bg: rgba(30, 41, 59, 0.7);
    --text-color: #e2e8f0;
    --accent-color: #38bdf8;
    --accent-hover: #0ea5e9;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --border-color: rgba(148, 163, 184, 0.1);
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}

.container {
    display: flex;
    height: 100%;
    width: 100%;
}

.canvas-container {
    flex-grow: 1;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);
}

canvas {
    display: block;
}

.controls {
    width: 320px;
    padding: 20px;
    background-color: var(--panel-bg);
    backdrop-filter: blur(10px);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 20px;
    overflow-y: auto;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.3);
    z-index: 10;
}

h1 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-color);
    text-align: center;
    letter-spacing: -0.025em;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

label {
    font-size: 0.875rem;
    color: #94a3b8;
    display: flex;
    justify-content: space-between;
}

label span {
    color: var(--text-color);
    font-weight: 500;
    font-feature-settings: "tnum";
}

input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    background: #334155;
    border-radius: 3px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent-color);
    cursor: pointer;
    transition: background 0.15s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    background: var(--accent-hover);
    transform: scale(1.1);
}

.button-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 10px;
}

button {
    padding: 10px;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    background-color: var(--accent-color);
    color: #0f172a;
}

button:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

button:active {
    transform: translateY(0);
}

button.secondary {
    background-color: #475569;
    color: white;
}

button.secondary:hover {
    background-color: #64748b;
}

button.danger {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
    border: 1px solid rgba(239, 68, 68, 0.5);
    grid-column: span 2;
}

button.danger:hover {
    background-color: rgba(239, 68, 68, 0.3);
}

button.warning {
    background-color: rgba(245, 158, 11, 0.2);
    color: var(--warning-color);
    border: 1px solid rgba(245, 158, 11, 0.5);
    grid-column: span 2;
}

button.warning:hover {
    background-color: rgba(245, 158, 11, 0.3);
}

.stats {
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-size: 0.875rem;
    color: #94a3b8;
}

.stats span {
    color: var(--text-color);
    font-weight: 600;
    font-size: 1.1rem;
}