/*
 * Rekta's look: cold navy ground, neon blocks. Same palette as the Android build — each step
 * from ground to board to cell to block is a real step, because a first pass that kept every
 * surface within a few points of the background read as one flat slab, and an empty grid was
 * invisible.
 *
 * Block colours are applied from JS, because the ramp is indexed by the block's geometry.
 * Everything else is here.
 */

.grekta {
    --ground: #0a1130;
    --board-bg: #101a45;
    --cell: #1b2a5e;
    --grid-line: #354c93;
    --text-primary: #eaf3ff;
    --text-secondary: #97add6;
    --cyan: #3de0ff;
    --coral: #ff5c6e;

    /*
     * Measured after the panel went from three rows to two: see the note in play.html. The old
     * figure was 392 against a real 399, so the page overflowed by seven pixels while the board
     * was already being squeezed.
     *
     * 344 is the figure for a window wide enough to show the title and the roomier stats — the
     * phone block below drops both and declares 330 there. One number for both was 12px short
     * on a desktop window, which is the same overflow bug in the other direction.
     */
    --play-chrome-stacked: 344px;
}

body.grekta {
    background: linear-gradient(180deg, #141f52 0%, #060a1c 100%);
    color: var(--text-primary);
}

/* The site's animated mesh is built for the light pages and glows through this one. */
body.grekta::before {
    display: none;
}

.grekta .play-bar .play-home,
.grekta .play-bar a.play-quiet {
    color: var(--text-secondary);
}

.grekta .play-bar a.play-quiet:hover {
    background: rgba(61, 224, 255, 0.12);
    color: var(--text-primary);
}

.grekta .play-title {
    color: var(--text-primary);
}

.grekta .play-button {
    background: rgba(53, 76, 147, 0.28);
    border-color: rgba(53, 76, 147, 0.9);
    color: var(--text-primary);
}

.grekta .play-button:hover:not(:disabled) {
    background: rgba(61, 224, 255, 0.16);
}

.grekta .play-button[aria-pressed="true"] {
    background: var(--cyan);
    border-color: transparent;
    color: #04060e;
}

/*
 * The three sizes split the row evenly. Left to size themselves they came out 91, 122 and
 * 110 wide — the labels are different lengths, and a row of three buttons that are supposed
 * to be one control should not look like three unrelated ones.
 */
.grekta #difficulty {
    flex-wrap: nowrap;
}

.grekta #difficulty .play-button {
    flex: 1 1 0;
    min-width: 0;
    padding-inline: 4px;
    white-space: nowrap;
}

.grekta .stat {
    background: rgba(16, 26, 69, 0.85);
    border: 1px solid rgba(53, 76, 147, 0.7);
    border-radius: 10px;
    padding: 5px 11px;
    min-width: 66px;
    text-align: center;
    line-height: 1.15;
}

.grekta .stat-label {
    display: block;
    font-size: 0.6rem;
    letter-spacing: 0.09em;
    color: var(--text-secondary);
    font-weight: 700;
}

.grekta .stat-value {
    font-size: 1rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
}

.grekta .play-hint {
    color: var(--text-secondary);
}

.grekta .play-warning {
    color: #ffd9dd;
    background: rgba(255, 92, 110, 0.16);
}

/* ---------- the board ---------- */

.grekta .play-board {
    --board-max: 460px;
    background: var(--board-bg);
    border: 1px solid rgba(53, 76, 147, 0.55);
    border-radius: 12px;
    /* Establishes the container that clue text is sized against, so a 10-wide grid gets
       smaller numerals than a 6-wide one with no JavaScript involved. */
    container-type: size;
    overflow: hidden;
}

.grekta .grid {
    position: absolute;
    inset: 0;
    display: grid;
    grid-template-columns: repeat(var(--cols), 1fr);
    grid-template-rows: repeat(var(--rows), 1fr);
}

/*
 * Grid lines are drawn inside the cell rather than as a gap. A gap would push the cells off
 * the exact 1/cols fractions that the block overlay positions itself on, and the blocks would
 * drift further out of true with every column.
 */
.grekta .cell {
    background: var(--cell);
    box-shadow: inset 0 0 0 1px rgba(53, 76, 147, 0.5);
}

.grekta .blocks {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.grekta .block {
    position: absolute;
    border: 2px solid currentColor;
    border-radius: 7px;
}

/*
 * The fill is the outline colour at partial strength and the outline carries the neon. It has
 * to be a pseudo-element rather than a background on the block itself: `currentColor` as a
 * background paints at full opacity, which buries the clue the block was drawn around.
 */
.grekta .block::before {
    content: "";
    position: absolute;
    inset: 0;
    background: currentColor;
    opacity: 0.28;
    border-radius: 5px;
}

/*
 * Clues sit in their own layer above the blocks, which is the whole point of them being here
 * rather than inside the cells: a clue covered by the rectangle drawn around it leaves the
 * player working from memory, and the number is the only thing on the board worth reading.
 * The Android build draws them last for the same reason.
 */
.grekta .clues {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.grekta .clue {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
}

.grekta .clue span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 78%;
    height: 78%;
    border-radius: 50%;
    border: 2px solid transparent;
    /* Nearly opaque on purpose: this disc is what keeps the numeral legible against whatever
       colour the player has just drawn underneath it. */
    background: rgba(4, 6, 14, 0.88);
    color: var(--text-primary);
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    /* 1cqw is one percent of the board's width, so one cell is 100/cols of them. */
    font-size: calc(100cqw / var(--cols) * 0.42);
    line-height: 1;
}

.grekta .block.invalid {
    color: var(--coral);
}

.grekta .preview {
    position: absolute;
    border: 2px dashed var(--cyan);
    border-radius: 7px;
    background: rgba(61, 224, 255, 0.16);
    pointer-events: none;
}

.grekta .preview[hidden] {
    display: none;
}

/* ---------- solved card ---------- */

.grekta .overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 20px;
    text-align: center;
    background: rgba(10, 16, 48, 0.94);
    border-radius: 12px;
    z-index: 2;
}

.grekta .overlay[hidden] {
    display: none;
}

.grekta .overlay h2 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--cyan);
}

.grekta .overlay p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.grekta .overlay .record {
    color: #4dffb8;
    font-weight: 700;
}

.grekta .overlay .play-button {
    background: var(--cyan);
    border-color: transparent;
    color: #04060e;
}

/*
 * Landscape phones. The panel is only 280px wide beside the board, and an even third of that
 * cannot hold "Medium 8×10", so the size buttons go back to sizing themselves and wrapping.
 */
@media (orientation: landscape) and (max-height: 560px) {
    .grekta #difficulty {
        flex-wrap: wrap;
    }

    .grekta #difficulty .play-button {
        flex: 0 1 auto;
        padding-inline: 12px;
    }
}

/* The switcher panel, in this game's colours rather than the shell's light default. */
.grekta .play-menu {
    --menu-bg: #0c1236;
    --menu-fg: var(--text-primary);
    --menu-line: rgba(61, 224, 255, 0.22);
    --menu-hover: rgba(61, 224, 255, 0.16);
}

/* ---------- phones: give the grid the width and the height ---------- */

@media (max-width: 768px) {
    /*
     * The grid takes the whole width the page gives its text — the same gutter the hint line
     * below it sits in — rather than being capped at 460px or squeezed by a chrome figure
     * that was too large. It is not bled to the bezel: lining up with everything else on the
     * page is worth more than the twelve pixels either side.
     */
    .grekta {
        /* The title is hidden and the stats are tighter below, so the chrome is 14px shorter
           than the figure declared for a desktop window. */
        --play-chrome-stacked: 330px;
    }

    .grekta .play-board {
        --board-max: 100%;
    }

    /*
     * The stats and the two actions have to fit one line. Left at their desktop sizes they
     * wrapped, and that second line cost 45px of height — which on a portrait grid is real
     * cells, since the board is bounded by height at every size.
     */
    .grekta .play-title {
        display: none;
    }

    .grekta .stat {
        min-width: 0;
        padding: 4px 7px;
    }

    .grekta .stat-label {
        font-size: 0.55rem;
    }

    .grekta .stat-value {
        font-size: 0.9rem;
    }

    .grekta #clear,
    .grekta #regenerate {
        padding: 7px 9px;
        font-size: 0.8rem;
    }
}