* {
    box-sizing: border-box;
}

:root {
    --bg: #050816;
    --panel: #0f1731;
    --panel-2: #111d41;
    --ink: #f4f7ff;
    --muted: #a9b6dc;
    --gold: #f7c948;
    --gold-2: #ffd96d;
    --correct: #2ecc71;
    --wrong: #ff6b6b;
    --border: rgba(255, 255, 255, 0.08);
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
    --radius: 22px;
}

html,
body {
    margin: 0;
    min-height: 100%;
    background:
        radial-gradient(circle at top left, rgba(80, 129, 255, 0.22), transparent 28%),
        radial-gradient(circle at top right, rgba(255, 204, 86, 0.12), transparent 22%),
        linear-gradient(180deg, #06102a 0%, #04070f 100%);
    color: var(--ink);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
    min-height: 100vh;
}

.game-shell {
    min-height: 100vh;
    padding: 20px;
    width: 100%;
}

.hero-head {
    margin: 0 auto 18px;
    width: min(1600px, 100%);
}

.eyebrow {
    margin: 0 0 8px;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--gold-2);
    font-size: 0.76rem;
}

h1 {
    margin: 0;
    font-size: clamp(2rem, 4vw, 3.4rem);
    line-height: 1;
}

.subtitle,
.small-copy {
    margin: 8px 0 0;
    color: var(--muted);
}

.content-grid {
    width: min(1600px, 100%);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
}

.stats-rail {
    display: grid;
    gap: 16px;
    align-self: start;
    position: sticky;
    top: 20px;
}

.status-card,
.score-card,
.board,
.board-panel {
    background: linear-gradient(180deg, rgba(16, 27, 60, 0.95), rgba(10, 17, 36, 0.92));
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
}

.status-card {
    min-height: 150px;
    padding: 18px 16px;
    text-align: center;
    display: grid;
    place-items: center;
}

.status-card .label {
    display: block;
    color: var(--muted);
    font-size: clamp(0.9rem, 1vw, 1.1rem);
    margin-bottom: 8px;
}

.status-card strong {
    font-size: clamp(2rem, 3vw, 3.4rem);
    line-height: 1;
}

.main-stage {
    min-width: 0;
    display: grid;
    gap: 20px;
}

.board-panel {
    min-width: 0;
    padding: 16px;
}

.panel-head {
    margin-bottom: 14px;
}

.panel-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.primary-btn,
.secondary-btn,
.board-btn,
.close-btn {
    border: 0;
    cursor: pointer;
    transition: transform 0.15s ease, opacity 0.15s ease, background 0.15s ease;
}

.primary-btn,
.secondary-btn {
    border-radius: 14px;
    padding: 14px 18px;
    font-weight: 700;
    font-size: 0.98rem;
}

.primary-btn {
    background: linear-gradient(180deg, var(--gold-2), var(--gold));
    color: #1a1730;
}

.secondary-btn {
    background: #1a2752;
    color: var(--ink);
    border: 1px solid var(--border);
}

.primary-btn:hover,
.secondary-btn:hover,
.board-btn:hover {
    transform: translateY(-1px);
}

.primary-btn:disabled,
.secondary-btn:disabled,
.board-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.message {
    min-height: 24px;
    color: var(--gold-2);
    font-weight: 600;
}

.board-scroll {
    width: 100%;
    overflow-x: auto;
    overflow-y: visible;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 6px;
}

.board {
    display: grid;
    grid-template-columns: repeat(5, minmax(150px, 1fr));
    gap: 10px;
    padding: 10px;
    min-width: 810px;
}

.column {
    display: grid;
    gap: 10px;
}

.category,
.board-btn {
    min-height: 100px;
    border-radius: 18px;
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    border: 1px solid rgba(247, 201, 72, 0.18);
}

.category {
    background: linear-gradient(180deg, #18316e, #102147);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: clamp(0.95rem, 1.15vw, 1.1rem);
    line-height: 1.15;
}

.board-btn {
    background: linear-gradient(180deg, #1f4fb9 0%, #14357b 100%);
    color: var(--gold);
    font-size: clamp(1.35rem, 2vw, 2rem);
    font-weight: 900;
    text-shadow: 0 2px 0 rgba(0, 0, 0, 0.25);
}

.board-btn.answered {
    background: linear-gradient(180deg, #0d1733, #091022);
    font-size: clamp(0.78rem, 1.05vw, 1rem);
    line-height: 1.2;
    padding: 10px;
    text-shadow: none;
    word-break: break-word;
}

.board-btn.correct {
    color: var(--correct);
    background: linear-gradient(180deg, rgba(46, 204, 113, 0.22), rgba(13, 23, 51, 0.96));
}

.board-btn.wrong {
    color: var(--wrong);
    background: linear-gradient(180deg, rgba(255, 107, 107, 0.22), rgba(13, 23, 51, 0.96));
}

.bottom-panels {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.score-card {
    padding: 18px;
}

.score-card h2 {
    margin: 0;
}

.rules {
    margin: 12px 0 0;
    padding-left: 18px;
    color: var(--muted);
    display: grid;
    gap: 10px;
}

.high-score-list {
    margin-top: 14px;
    display: grid;
    gap: 10px;
}

.high-score-row {
    display: grid;
    grid-template-columns: 34px 1fr auto;
    gap: 10px;
    align-items: center;
    padding: 10px 12px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.03);
}

.rank-badge {
    width: 34px;
    height: 34px;
    border-radius: 999px;
    background: rgba(247, 201, 72, 0.15);
    color: var(--gold-2);
    display: grid;
    place-items: center;
    font-weight: 800;
}

.score-meta {
    color: var(--muted);
    font-size: 0.86rem;
}

.modal {
    width: min(92vw, 780px);
    border: 0;
    padding: 0;
    background: transparent;
}

.modal::backdrop {
    background: rgba(4, 7, 16, 0.78);
    backdrop-filter: blur(5px);
}

.modal-card {
    position: relative;
    background: linear-gradient(180deg, #152652, #0d1733);
    color: var(--ink);
    border-radius: 26px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 28px;
    display: grid;
    gap: 14px;
}

.modal-card h2 {
    margin: 0;
    font-size: clamp(1.4rem, 2vw, 2rem);
}

.modal-card label {
    color: var(--muted);
    font-weight: 600;
}

.modal-card input {
    width: 100%;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.06);
    color: var(--ink);
    padding: 14px 16px;
    font-size: 1rem;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 6px;
}

.close-btn {
    position: absolute;
    right: 14px;
    top: 12px;
    background: transparent;
    color: var(--muted);
    font-size: 2rem;
    line-height: 1;
}

.modal-value {
    margin: 0;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--gold-2);
}

.result-card.correct {
    border-color: rgba(46, 204, 113, 0.5);
    box-shadow: 0 20px 60px rgba(46, 204, 113, 0.18);
}

.result-card.wrong {
    border-color: rgba(255, 107, 107, 0.5);
    box-shadow: 0 20px 60px rgba(255, 107, 107, 0.18);
}

.result-answer {
    margin: 0;
    font-size: 1.05rem;
    color: var(--ink);
}

@media (max-width: 1200px) {
    .content-grid {
        grid-template-columns: 1fr;
    }

    .stats-rail {
        position: static;
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .status-card {
        min-height: 120px;
    }
}

@media (max-width: 900px) {
    .bottom-panels {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 760px) {
    .game-shell {
        padding: 12px;
    }

    .stats-rail {
        gap: 10px;
    }

    .status-card {
        min-height: 96px;
        padding: 14px 10px;
        border-radius: 18px;
    }

    .status-card strong {
        font-size: clamp(1.5rem, 5vw, 2rem);
    }

    .board-panel {
        padding: 12px;
    }

    .board {
        min-width: 660px;
        grid-template-columns: repeat(5, minmax(120px, 1fr));
        gap: 8px;
        padding: 8px;
    }

    .column {
        gap: 8px;
    }

    .category,
    .board-btn {
        min-height: 76px;
        padding: 8px;
        border-radius: 14px;
    }

    .category {
        font-size: 0.8rem;
    }

    .board-btn {
        font-size: 1.2rem;
    }

    .board-btn.answered {
        font-size: 0.74rem;
    }

    .modal {
        width: min(96vw, 780px);
    }

    .modal-card {
        padding: 20px;
    }
}

@media (max-width: 560px) {
    .hero-head {
        margin-bottom: 14px;
    }

    .stats-rail {
        grid-template-columns: 1fr;
    }

    .status-card {
        min-height: 84px;
    }

    .primary-btn,
    .secondary-btn {
        width: 100%;
    }

    .panel-actions {
        display: grid;
        grid-template-columns: 1fr;
    }

    .board {
        min-width: 560px;
    }

    .high-score-row {
        grid-template-columns: 30px 1fr;
    }

    .high-score-row > strong {
        grid-column: 2;
    }
}


@media (max-width: 760px) {
    .content-grid {
        gap: 12px;
    }

    .stats-rail {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .board-scroll {
        overflow-x: visible;
    }

    .board {
        min-width: 100%;
        grid-template-columns: repeat(5, minmax(0, 1fr));
        gap: 6px;
        padding: 6px;
    }

    .column {
        gap: 6px;
    }

    .category,
    .board-btn {
        min-height: 68px;
        border-radius: 12px;
        padding: 6px;
    }

    .category {
        font-size: 0.68rem;
        letter-spacing: 0.03em;
    }

    .board-btn {
        font-size: 1rem;
    }

    .board-btn.answered {
        font-size: 0.62rem;
        line-height: 1.1;
    }
}

@media (max-width: 560px) {
    .stats-rail {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .status-card {
        min-height: 82px;
        padding: 10px 6px;
    }

    .status-card .label {
        font-size: 0.78rem;
        margin-bottom: 6px;
    }

    .status-card strong {
        font-size: 1.55rem;
    }

    .panel-actions {
        grid-template-columns: 1fr;
    }

    .board {
        min-width: 100%;
        gap: 5px;
        padding: 5px;
    }

    .column {
        gap: 5px;
    }

    .category,
    .board-btn {
        min-height: 58px;
        padding: 5px 4px;
        border-radius: 10px;
    }

    .category {
        font-size: 0.58rem;
    }

    .board-btn {
        font-size: 0.88rem;
    }

    .board-btn.answered {
        font-size: 0.54rem;
    }
}

@media (max-width: 380px) {
    .board {
        gap: 4px;
        padding: 4px;
    }

    .column {
        gap: 4px;
    }

    .category,
    .board-btn {
        min-height: 54px;
        padding: 4px 3px;
    }

    .category {
        font-size: 0.52rem;
    }

    .board-btn {
        font-size: 0.8rem;
    }

    .board-btn.answered {
        font-size: 0.5rem;
    }
}