* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg: #0b0f1c;
    --card: rgba(14, 19, 34, 0.9);
    --text: #f2f6ff;
    --muted: rgba(210, 218, 255, 0.7);
    --accent-1: #7afcff;
    --accent-2: #ff5eea;
    --accent-3: #ffb347;
    --wall: #2a314a;
    --floor: #0f1424;
    --dark: rgba(3, 6, 12, 0.88);
    --glow: rgba(122, 252, 255, 0.45);
    --shadow: rgba(6, 10, 20, 0.7);
}

body {
    font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
    background:
        radial-gradient(circle at 10% 20%, rgba(122, 252, 255, 0.16), transparent 35%),
        radial-gradient(circle at 90% 15%, rgba(255, 94, 234, 0.18), transparent 40%),
        radial-gradient(circle at 40% 85%, rgba(255, 179, 71, 0.2), transparent 45%),
        linear-gradient(180deg, #0b0f1c 0%, #0a0d18 100%);
    color: var(--text);
    min-height: 100vh;
}

.glow-layer {
    position: fixed;
    inset: 0;
    background:
        radial-gradient(circle at 18% 28%, rgba(122, 252, 255, 0.25), transparent 48%),
        radial-gradient(circle at 82% 22%, rgba(255, 94, 234, 0.25), transparent 48%),
        radial-gradient(circle at 70% 85%, rgba(255, 179, 71, 0.18), transparent 55%);
    pointer-events: none;
    z-index: 0;
    filter: blur(0.5px);
}

.app {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 16px 32px;
}

.screen {
    display: none;
    width: 100%;
    max-width: 920px;
}

.screen.active {
    display: block;
}

.menu-card,
.result-card,
.arena {
    background: linear-gradient(160deg, rgba(18, 24, 44, 0.95), rgba(10, 14, 28, 0.9));
    border-radius: 30px;
    padding: 28px;
    border: 1px solid rgba(122, 252, 255, 0.2);
    box-shadow: 0 30px 70px var(--shadow);
    backdrop-filter: blur(18px);
}

.logo-chip {
    display: inline-flex;
    padding: 6px 16px;
    border-radius: 999px;
    background: rgba(122, 252, 255, 0.2);
    border: 1px solid rgba(122, 252, 255, 0.3);
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

h1 {
    font-size: 2.4rem;
    margin-bottom: 10px;
}

.tagline {
    color: var(--muted);
    margin-bottom: 22px;
}

.menu-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn {
    border: none;
    border-radius: 18px;
    padding: 12px 22px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    color: var(--text);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: inset 0 0 0 1px rgba(122, 252, 255, 0.12), 0 14px 28px rgba(6, 10, 20, 0.5);
    transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(255, 255, 255, 0.05), rgba(122, 252, 255, 0.2));
    opacity: 0;
    transition: opacity 0.2s ease;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: inset 0 0 0 1px rgba(122, 252, 255, 0.2), 0 18px 32px rgba(6, 10, 20, 0.6);
}

.btn:hover::after {
    opacity: 1;
}

.btn.primary {
    color: #061018;
    background: linear-gradient(120deg, var(--accent-1), var(--accent-2));
    box-shadow: 0 16px 32px rgba(122, 252, 255, 0.3);
}

.btn.ghost {
    background: rgba(9, 14, 26, 0.6);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.hud {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    padding: 12px 18px;
    border-radius: 20px;
    background: rgba(8, 12, 24, 0.9);
    border: 1px solid rgba(122, 252, 255, 0.15);
    margin-bottom: 16px;
    box-shadow: inset 0 0 18px rgba(122, 252, 255, 0.05);
}

.hud-block {
    text-align: center;
}

.hud-label {
    display: block;
    font-size: 0.8rem;
    color: var(--muted);
}

.arena {
    display: flex;
    justify-content: center;
    border: 1px solid rgba(122, 252, 255, 0.08);
}

.maze {
    display: grid;
    gap: 2px;
    background: rgba(6, 10, 20, 0.75);
    padding: 12px;
    border-radius: 22px;
    position: relative;
    width: min(82vw, 520px);
    height: min(82vw, 520px);
    box-shadow: inset 0 0 24px rgba(122, 252, 255, 0.06);
}

.cell {
    border-radius: 7px;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.04), transparent 60%), var(--floor);
    position: relative;
}

.cell.wall {
    background: linear-gradient(145deg, #1c2236, #2b3450);
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.4);
}

.cell.trap {
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.3), transparent 55%), #ff7a1a;
}

.cell.exit {
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.3), transparent 60%), #18c06b;
    box-shadow: 0 0 10px rgba(24, 192, 107, 0.6);
}

.cell.player::after {
    content: '';
    position: absolute;
    inset: 18%;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.7), transparent 50%), #7afcff;
    box-shadow: 0 0 14px rgba(122, 252, 255, 0.7);
}

.cell.dark::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 8px;
    background: var(--dark);
}

.controls {
    margin-top: 18px;
    display: grid;
    gap: 8px;
    justify-content: center;
    justify-items: center;
}

.control-row {
    display: grid;
    grid-template-columns: repeat(3, 56px);
    gap: 8px;
}

.control-btn {
    width: 56px;
    height: 56px;
    border-radius: 18px;
    border: none;
    font-size: 1.2rem;
    font-weight: 700;
    background: rgba(10, 16, 30, 0.8);
    color: var(--text);
    cursor: pointer;
    box-shadow: inset 0 0 0 1px rgba(122, 252, 255, 0.15), 0 10px 24px rgba(6, 10, 20, 0.5);
}

.actions {
    margin-top: 16px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-spacer {
    height: 64px;
}

.result-card h2 {
    font-size: 2.2rem;
    margin-bottom: 8px;
}

.result-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 22px;
}

.result-meta span {
    display: block;
    color: var(--muted);
    font-size: 0.85rem;
}

.result-badge {
    display: inline-flex;
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(122, 252, 255, 0.18);
    margin-bottom: 12px;
    font-weight: 700;
    border: 1px solid rgba(122, 252, 255, 0.2);
}

.result-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.modal {
    position: fixed;
    inset: 0;
    background: rgba(5, 7, 12, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 10;
}

.modal.hidden {
    display: none;
}

.modal-card {
    width: 100%;
    max-width: 520px;
    background: var(--card);
    padding: 24px;
    border-radius: 22px;
    border: 1px solid rgba(124, 77, 255, 0.2);
}

.stats-grid {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    margin: 16px 0 20px;
}

.stat-item {
    background: rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 12px;
}

.stat-item span {
    display: block;
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 6px;
}

@media (max-width: 640px) {
    .app {
        padding: 20px 12px 28px;
        align-items: center;
    }

    h1 {
        font-size: 2rem;
    }

    .menu-card,
    .result-card,
    .arena {
        padding: 20px;
    }

    .hud {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 6px;
        padding: 10px 12px;
    }

    .maze {
        width: min(86vw, 420px);
        height: min(86vw, 420px);
    }

    .controls {
        margin-top: 14px;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .control-btn {
        width: 52px;
        height: 52px;
    }


    .actions {
        flex-direction: column;
    }

    .result-actions {
        flex-direction: column;
    }
}