* {
    box-sizing: border-box;
}

::-webkit-scrollbar {
    width: 3px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--border-2);
    border-radius: 2px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-2);
}

html,
body {
    height: 100%;
    overflow: hidden;
}

body {
    margin: 0;
    font-family: var(--font-ui);
    font-size: 13px;
    color: var(--text-1);
    background:
        radial-gradient(
            ellipse 800px 500px at 10% -5%,
            rgba(21, 199, 138, 0.05),
            transparent
        ),
        radial-gradient(
            ellipse 500px 400px at 85% 90%,
            rgba(21, 199, 138, 0.03),
            transparent
        ),
        linear-gradient(160deg, var(--bg), var(--bg-2));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--sp-6);
}

.hidden {
    display: none;
}

.app {
    width: 100%;
    max-width: 1160px;
    height: 100%;
    display: grid;
    grid-template-columns: 1fr 296px;
    gap: var(--sp-5);
}

.game-section,
.leaderboard {
    background: var(--surface);
    border-radius: var(--section-border-radius);
    box-shadow: var(--shadow-panel);
    border-top: 1px solid var(--accent-border);
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    overflow: hidden;
}

.game-section {
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: var(--panel-pad);
    gap: var(--sp-3);
}

.game-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

h1 {
    margin: 0;
    font-family: var(--font-game);
    font-size: 13px;
    color: var(--accent);
    letter-spacing: 3px;
    text-shadow: 0 0 24px var(--accent-glow);
}

.game-header-right {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
}

.user-info {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-2);
    letter-spacing: 0.3px;
}

.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    color: var(--text-2);
    cursor: pointer;
    transition:
        color var(--t-base),
        border-color var(--t-base),
        background var(--t-base);
}

.icon-btn:hover {
    color: var(--accent);
    border-color: var(--accent-border);
    background: var(--accent-dim);
}

.icon-btn:focus-visible {
    outline: 2px solid var(--accent-border);
    outline-offset: 2px;
}

.canvas-area {
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.game-container {
    width: 100%;
    height: 100%;
    position: relative;
    border-radius: var(--r-md);
    overflow: hidden;
    background: var(--canvas-bg);
    border: 1px solid var(--accent-border);
    box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.6) inset,
        0 0 40px rgba(21, 199, 138, 0.04);
}

.game-container::after {
    content: "";
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.025) 0px,
        rgba(0, 0, 0, 0.025) 1px,
        transparent 1px,
        transparent 3px
    );
    pointer-events: none;
    z-index: 1;
}

canvas {
    width: 100%;
    height: 100%;
    display: block;
    image-rendering: pixelated;
}

.game-footer {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-3);
}

.stats-bar {
    display: flex;
    align-items: stretch;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    overflow: hidden;
}

.scoreboard,
.levelboard {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 7px 20px;
    gap: 3px;
}

.stat-sep {
    width: 1px;
    background: var(--border);
    align-self: stretch;
}

.stat-label {
    font-size: 8px;
    font-weight: 700;
    letter-spacing: 1.8px;
    color: var(--text-2);
    text-transform: uppercase;
}

.stat-value {
    font-family: var(--font-game);
    font-size: 11px;
    color: var(--accent);
    letter-spacing: 1px;
}

.controls {
    font-size: 11px;
    color: var(--text-3);
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--sp-2);
    padding: 10px 20px;
    border: none;
    border-radius: var(--r-sm);
    font-family: var(--font-ui);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.3px;
    cursor: pointer;
    transition:
        background var(--t-base),
        transform var(--t-fast),
        box-shadow var(--t-base);
    white-space: nowrap;
}

.btn-full {
    width: 100%;
}

.btn-primary {
    background: var(--accent);
    color: var(--bg);
}

.btn-primary:hover {
    background: var(--accent-bright);
    transform: translateY(-1px);
    box-shadow: var(--shadow-btn);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: none;
}

.btn-ghost-danger {
    background: transparent;
    color: var(--danger);
    border: 1px solid var(--danger-border);
}

.btn-ghost-danger:hover {
    background: var(--danger-dim);
    border-color: rgba(239, 68, 68, 0.4);
    transform: translateY(-1px);
}

.btn-ghost-danger:active {
    transform: translateY(0);
}

@media (max-width: 860px) {
    html,
    body {
        overflow: auto;
        height: auto;
    }

    body {
        padding: var(--sp-4);
        align-items: flex-start;
    }

    .app {
        height: auto;
        grid-template-columns: 1fr;
        gap: var(--sp-4);
    }

    .game-section {
        height: auto;
    }

    .canvas-area {
        height: auto;
    }

    .game-container {
        height: auto;
        width: 100%;
        aspect-ratio: 1;
    }

    .leaderboard {
        min-height: 320px;
    }
}