/*
 * Skill Snake: página do jogo (/skill-snake/).
 * Todas as classes usam o prefixo snake- para não interferir no style.css,
 * que também serve a home e as páginas de erro.
 */

/* ---------- Página ---------- */

/* O style.css centraliza e trava a rolagem do body; aqui a página precisa rolar */
body.page-snake {
    display: block;
    overflow-x: hidden;
    overflow-y: auto;
}

/* Um fundo só, preso à janela enquanto a página rola */
.page-snake .background-effects {
    position: fixed;
    inset: 0;
    pointer-events: none;
}

.snake-page {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    width: 100%;
    /* Topo reservado para o menu (1rem de margem + ~3.5rem de barra), para ele não cobrir o cartão */
    padding: 6rem 1rem 3rem;
}

.snake-card {
    --snake-blue: #60a5fa;
    --snake-violet: #8b5cf6;
    --snake-pink: #f472b6;
    --snake-muted: #94a3b8;
    --snake-line: rgba(255, 255, 255, 0.08);

    width: 100%;
    max-width: 976px;
    padding: 2.5rem;
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.035);
    border: 1px solid var(--snake-line);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    opacity: 0;
    animation: fadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.15s forwards;
}

/* ---------- Cabeçalho ---------- */

.snake-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.snake-title {
    font-size: 1.9rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    line-height: 1.1;
    color: var(--text-primary);
}

.snake-title-accent {
    background: linear-gradient(to right, var(--snake-blue), #c084fc);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.snake-tagline {
    margin-top: 0.35rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    color: var(--snake-muted);
}

.snake-signal {
    flex-shrink: 0;
    margin-top: 0.4rem;
}

/* ---------- Placar ---------- */

.snake-scorebar {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    padding: 0.8rem 1rem;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--snake-line);
    margin-bottom: 0.9rem;
}

.snake-score {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    min-width: 0;
}

.snake-score-label {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    color: var(--snake-muted);
}

.snake-score-value {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    font-variant-numeric: tabular-nums;
    color: var(--text-primary);
}

.snake-score-divider {
    align-self: stretch;
    width: 1px;
    background: var(--snake-line);
}

.snake-status {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    color: #64748b;
    white-space: nowrap;
}

.snake-status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #64748b;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.snake-status[data-state="playing"] {
    color: var(--snake-blue);
}

.snake-status[data-state="playing"] .snake-status-dot {
    background: var(--snake-blue);
    box-shadow: 0 0 10px var(--snake-blue);
    animation: snake-pulse 1.2s ease-in-out infinite;
}

.snake-status[data-state="paused"] {
    color: #fbbf24;
}

.snake-status[data-state="paused"] .snake-status-dot {
    background: #fbbf24;
}

.snake-status[data-state="over"] {
    color: var(--snake-pink);
}

.snake-status[data-state="over"] .snake-status-dot {
    background: var(--snake-pink);
    box-shadow: 0 0 10px var(--snake-pink);
}

/* ---------- Tabuleiro ---------- */

.snake-board-frame {
    width: 100%;
    max-width: 544px;
    margin: 0 auto;
    padding: 12px;
    border-radius: 18px;
    background: rgba(0, 0, 0, 0.22);
    border: 1px solid var(--snake-line);
    box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.35);
}

.snake-board {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 10px;
    overflow: hidden;
    background: #0c111b;
    user-select: none;
    -webkit-user-select: none;
}

/* Durante a partida o deslize no tabuleiro controla a cobra e não rola a página */
.snake-board.is-active {
    touch-action: none;
}

.snake-canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.snake-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.9rem;
    padding: 1.5rem;
    text-align: center;
    background: rgba(12, 17, 27, 0.62);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
}

.snake-overlay[hidden] {
    display: none;
}

.snake-overlay-kicker {
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.16em;
    color: var(--snake-blue);
}

.snake-overlay-title {
    max-width: 15ch;
    font-size: clamp(1.4rem, 5vw, 1.75rem);
    font-weight: 900;
    line-height: 1.45;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

.snake-overlay-detail {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    color: var(--snake-muted);
}

.snake-btn {
    margin-top: 0.4rem;
    padding: 0.8rem 1.35rem;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 10px;
    background: linear-gradient(to right, var(--snake-blue), var(--snake-violet));
    color: #ffffff;
    font: inherit;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    cursor: pointer;
    box-shadow: 0 6px 24px rgba(96, 165, 250, 0.45);
    transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.snake-btn:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
    box-shadow: 0 8px 28px rgba(139, 92, 246, 0.55);
}

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

.snake-btn:focus-visible,
.snake-dpad-btn:focus-visible {
    outline: 2px solid var(--snake-violet);
    outline-offset: 2px;
}

/* ---------- Direcional e instruções ---------- */

.snake-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 5rem;
    margin-top: 1.5rem;
}

.snake-dpad {
    display: grid;
    grid-template-columns: repeat(3, 44px);
    grid-template-rows: repeat(3, 44px);
    gap: 5px;
    flex-shrink: 0;
}

.snake-dpad-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    color: #cbd5e1;
    font: inherit;
    font-size: 1.1rem;
    line-height: 1;
    cursor: pointer;
    touch-action: manipulation;
    transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}

.snake-dpad-btn:hover {
    background: rgba(255, 255, 255, 0.09);
    border-color: rgba(139, 92, 246, 0.4);
}

.snake-dpad-btn:active,
.snake-dpad-btn.is-pressed {
    transform: scale(0.94);
    background: rgba(139, 92, 246, 0.2);
}

.snake-dpad-up { grid-column: 2; grid-row: 1; }
.snake-dpad-left { grid-column: 1; grid-row: 2; }
.snake-dpad-center { grid-column: 2; grid-row: 2; }
.snake-dpad-right { grid-column: 3; grid-row: 2; }
.snake-dpad-down { grid-column: 2; grid-row: 3; }

.snake-dpad-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: #a78bfa;
    box-shadow: 0 0 8px #a78bfa;
}

.snake-help {
    max-width: 360px;
}

.snake-help-title {
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    color: #cbd5e1;
    margin-bottom: 0.75rem;
}

.snake-help-text {
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--snake-muted);
}

.snake-help-keys {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    margin-top: 0.85rem;
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    color: #64748b;
}

.snake-kbd {
    font-family: inherit;
    font-size: 0.62rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: #cbd5e1;
    padding: 0.35rem 0.5rem;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.05);
}

@keyframes snake-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.45; }
}

/* ---------- Telas estreitas ---------- */

@media (max-width: 640px) {
    .snake-page {
        padding: 5rem 1rem 2.5rem;
    }

    /* As manchas de luz do style.css são pensadas para desktop; no celular, menores,
       para não lavarem o cartão do jogo de roxo */
    .page-snake .blob-1 {
        width: 260px;
        height: 260px;
    }

    .page-snake .blob-2 {
        width: 300px;
        height: 300px;
        bottom: -120px;
        right: -120px;
    }

    .snake-card {
        padding: 1.25rem 1rem 1.5rem;
        border-radius: 22px;
    }

    .snake-header {
        margin-bottom: 1rem;
    }

    .snake-title {
        font-size: 1.55rem;
    }

    .snake-scorebar {
        gap: 1rem;
        padding: 0.7rem 0.8rem;
    }

    .snake-score-value {
        font-size: 1.05rem;
        letter-spacing: 0.1em;
    }

    .snake-board-frame {
        padding: 8px;
        border-radius: 14px;
    }

    /* Direcional em cima, com botões maiores para o dedo, e instruções embaixo */
    .snake-controls {
        flex-direction: column;
        gap: 1.25rem;
    }

    .snake-dpad {
        grid-template-columns: repeat(3, 54px);
        grid-template-rows: repeat(3, 54px);
        gap: 6px;
    }

    .snake-help {
        text-align: center;
    }

    .snake-help-keys {
        justify-content: center;
    }
}

@media (max-width: 340px) {
    /* O estado vai para a linha de baixo para os dois placares não espremerem */
    .snake-scorebar {
        flex-wrap: wrap;
        row-gap: 0.6rem;
    }

    .snake-status {
        width: 100%;
        margin-left: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .snake-card {
        animation: none;
        opacity: 1;
    }

    .snake-status[data-state="playing"] .snake-status-dot {
        animation: none;
    }
}