/* activity-maze-lite.css — activity::maze extension */

/* =========================================================
   1. Maze variables
   ========================================================= */

.activity--maze {
    --maze-wall: #263238;
    --maze-path: #fff8e8;
    --maze-start: #dff3df;
    --maze-finish: #ffe2ba;
    --maze-solution: #b9ddff;
    --maze-visited: #f3e4ad;
    --maze-complete: #d8f0d2;

    --maze-cell-size: 38px;
    --maze-cell-size-landscape: 46px;

    --maze-border-width: 3px;
    --maze-radius: 8px;

    --maze-player-size-min: 13px;
    --maze-player-size-fluid: 3.8vw;
    --maze-player-size-max: 24px;

    --maze-symbol-size-min: 12px;
    --maze-symbol-size-fluid: 3.5vw;
    --maze-symbol-size-max: 22px;

    --maze-transition-duration: 150ms;
}


/* =========================================================
   2. Grid
   ========================================================= */

.maze__grid {
    display: grid;

    grid-template-columns:
        repeat(
            var(--maze-cols),
            minmax(0, 1fr)
        );

    width:
        min(
            100%,
            calc(
                var(--maze-cols) *
                var(--maze-cell-size)
            )
        );

    max-width: 100%;

    background: var(--maze-wall);

    border:
        var(--maze-border-width)
        solid
        var(--maze-wall);

    border-radius: var(--maze-radius);

    overflow: hidden;
    outline: none;

    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: transparent;

    contain: layout paint;
}

.maze__grid:focus-visible {
    outline:
        var(--activity-focus-width, 3px)
        solid
        var(--activity-link, #0a58ca);

    outline-offset: 5px;
}


/* =========================================================
   3. Cells
   ========================================================= */

.maze__cell {
    position: relative;

    min-width: 0;
    aspect-ratio: 1;

    transition:
        background-color
            var(--maze-transition-duration)
            ease,
        box-shadow
            var(--maze-transition-duration)
            ease,
        filter
            var(--maze-transition-duration)
            ease;
}

.maze__cell--wall {
    background: var(--maze-wall);
}

.maze__cell--path {
    cursor: pointer;
    background: var(--maze-path);

    -webkit-tap-highlight-color: transparent;
}

.maze__cell--start {
    background: var(--maze-start);
}

.maze__cell--finish {
    background: var(--maze-finish);
}


/* =========================================================
   4. Start, finish and player
   ========================================================= */

.maze__cell--finish::after {
    content: "🗄️";

    position: absolute;
    inset: 0;

    display: grid;
    place-items: center;

    font-size:
        clamp(
            var(--maze-symbol-size-min),
            var(--maze-symbol-size-fluid),
            var(--maze-symbol-size-max)
        );

    line-height: 1;
}

.maze__cell.is-player::before {
    content: "🕵️";

    position: absolute;
    z-index: 2;
    inset: 0;

    display: grid;
    place-items: center;

    font-size:
        clamp(
            var(--maze-player-size-min),
            var(--maze-player-size-fluid),
            var(--maze-player-size-max)
        );

    line-height: 1;

    transform:
        translateY(-1px)
        scale(1.08);

    transform-origin: center;
}


/* =========================================================
   5. Visited, solution and tap feedback
   ========================================================= */

.maze__cell.is-visited {
    box-shadow:
        inset 0 0 0 999px
        color-mix(
            in srgb,
            var(--maze-visited) 55%,
            transparent
        );
}

.maze__cell.is-solution {
    background: var(--maze-solution);
}

.maze__cell.is-tapped {
    box-shadow:
        inset 0 0 0 3px
        var(--activity-link, #0a58ca);
}


/* Preserve player visibility over other states */

.maze__cell.is-player {
    z-index: 1;
}

.maze__cell.is-player.is-tapped {
    box-shadow:
        inset 0 0 0 3px
        var(--activity-link, #0a58ca);
}


/* =========================================================
   6. Moving state
   ========================================================= */

.activity--maze.is-moving .maze__cell--path {
    cursor: wait;
    pointer-events: none;
}

.activity--maze.is-moving .maze__cell.is-player::before {
    transform:
        translateY(-1px)
        scale(1.12);
}


/* =========================================================
   7. Completed state
   ========================================================= */

.activity--maze.is-complete {
    border-color: #6eaa62;
    background: var(--maze-complete);
}

.activity--maze.is-complete .activity__status {
    color: var(--activity-text, #111);
    font-weight: 700;
}

.activity--maze.is-complete
.maze__cell.is-player::before {
    transform:
        translateY(-2px)
        scale(1.14);
}


/* =========================================================
   8. Orientation states
   ========================================================= */

.activity--maze.is-orientation-blocked
.maze__grid {
    pointer-events: none;

    opacity: 0.45;
    filter: grayscale(0.25);
}


/* =========================================================
   9. Smartphone portrait
   ========================================================= */

@media (
    max-width: 700px
) and (
    orientation: portrait
) {
    .activity--maze {
        --maze-cell-size: 34px;
    }

    .maze__grid {
        width: 100%;
    }
}


/* =========================================================
   10. Smartphone landscape
   ========================================================= */

@media (
    max-height: 520px
) and (
    orientation: landscape
) {
    .activity--maze {
        --maze-cell-size:
            var(--maze-cell-size-landscape);
    }

    .activity--maze .activity__header {
        margin-bottom: 10px;
    }

    .activity--maze .activity__title {
        font-size: clamp(1.1rem, 3vw, 1.5rem);
    }

    .activity--maze .activity__instructions {
        font-size: 0.95rem;
    }

    .activity--maze .activity__footer {
        margin-top: 10px;
    }

    .maze__grid {
        width:
            min(
                100%,
                calc(
                    var(--maze-cols) *
                    var(--maze-cell-size-landscape)
                )
            );
    }
}


/* =========================================================
   11. Very narrow screens
   ========================================================= */

@media (max-width: 380px) {
    .activity--maze {
        --maze-border-width: 2px;
        --maze-radius: 6px;
    }

    .maze__grid {
        width: 100%;
    }

    .maze__cell--finish::after {
        font-size:
            clamp(
                11px,
                3.2vw,
                18px
            );
    }

    .maze__cell.is-player::before {
        font-size:
            clamp(
                12px,
                3.4vw,
                20px
            );
    }
}


/* =========================================================
   12. Reduced motion
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
    .maze__cell,
    .maze__cell::before,
    .maze__cell::after {
        transition: none !important;
        animation: none !important;
    }
}