/* Casino — shared tokens, sprite rendering, and hub layout.
 *
 * These pages are self-contained: they load neither css/style.css nor
 * css/tailwind.css. Class names here are deliberately bespoke (.hand-row,
 * .chip-count) rather than Tailwind utility names, so that Tailwind's
 * ./games/**\/*.html content glob scanning these files produces no new
 * utilities and leaves css/tailwind.css byte-identical.
 *
 * Palette picks up games/casino/cover.svg (#10b981 -> #064e3b) so the pages
 * match the card that links to them from games/index.html.
 */

/* === Reset === */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Casino controls and labels are not selectable. */
html {
    -webkit-user-select: none;
    user-select: none;
}

/* === Tokens === */
:root {
    --felt-deep: #032118;
    --felt: #064e3b;
    --felt-mid: #075e45;
    --felt-bright: #10b981;

    --gold: #fbbf24;
    --gold-dim: #b8860b;
    --gold-deep: #92400e;

    --ink: #ecfdf5;
    --ink-dim: #86b3a0;
    --ink-faint: #4b7c68;

    --panel: rgba(0, 0, 0, 0.32);
    --panel-edge: rgba(251, 191, 36, 0.28);
    --panel-solid: #05382a;

    --win: #34d399;
    --danger: #f87171;

    --font: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;

    /* Pixel-art scale. MUST stay an integer or the sprites blur. */
    --scale: 4;
    --chip-scale: 1;
}

html {
    color-scheme: dark;
    scrollbar-width: none;
}

body {
    min-height: 100dvh;
    background:
        radial-gradient(ellipse at 50% -10%, var(--felt-mid) 0%, transparent 65%),
        linear-gradient(180deg, var(--felt-deep) 0%, var(--felt) 45%, var(--felt-deep) 100%);
    background-color: var(--felt);
    background-attachment: fixed;
    color: var(--ink);
    font-family: var(--font);
    /* Yahtzee-style viewport scaling: readable on short displays and fuller
       on large screens. New Casino games inherit this baseline. */
    font-size: clamp(15px, 1.8vh, 18px);
    line-height: 1.5;
    display: flex;
    flex-direction: column;
    scrollbar-width: none;
}

html::-webkit-scrollbar,
body::-webkit-scrollbar {
    display: none;
}

:focus-visible {
    outline: 3px solid var(--gold);
    outline-offset: 3px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* === Card sprites ===
 *
 * assets/cards.png is a 15x5 grid of 50x66 cells, each holding a 48x64 card
 * inset 1px. The gutter matters: the source art packs cards edge to edge, and
 * at a fractional devicePixelRatio an integer CSS scale still rasterizes
 * fractionally and would sample a sliver of the neighbouring card.
 *
 * background-size is stated explicitly — cover/contain would destroy the pixel
 * alignment this whole approach depends on.
 */
.card-face {
    --col: 0;
    --row: 0;
    display: block;
    flex: none;
    width: calc(48px * var(--scale));
    height: calc(64px * var(--scale));
    background-image: url('assets/cards.png');
    background-repeat: no-repeat;
    background-size: calc(750px * var(--scale)) calc(330px * var(--scale));
    background-position:
        calc(-1 * (var(--col) * 50px + 1px) * var(--scale))
        calc(-1 * (var(--row) * 66px + 1px) * var(--scale));
    image-rendering: pixelated;
}

/* === Chip sprites ===
 * assets/chips.png is 368x192: 8 columns at a 48px pitch (sprites are 32 wide),
 * 4 rows at a 48px pitch (sprites are 44 tall, inset 4px from the cell top).
 */
.chip {
    --chip-col: 4;
    --chip-row: 3;
    display: inline-block;
    flex: none;
    width: calc(32px * var(--chip-scale));
    height: calc(44px * var(--chip-scale));
    background-image: url('assets/chips.png');
    background-repeat: no-repeat;
    background-size: calc(368px * var(--chip-scale)) calc(192px * var(--chip-scale));
    background-position:
        calc(-1 * var(--chip-col) * 48px * var(--chip-scale))
        calc(-1 * (var(--chip-row) * 48px + 4px) * var(--chip-scale));
    image-rendering: pixelated;
    vertical-align: middle;
}

/* === Shared chrome === */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    color: #fca5a5;
    background: rgba(69, 10, 10, 0.38);
    border: 2px solid rgba(185, 28, 28, 0.72);
    border-radius: 9px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    padding: 0.52em 0.8em;
    transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.back-link:hover,
.back-link:focus-visible {
    color: #fff;
    background: rgba(127, 29, 29, 0.58);
    border-color: #dc2626;
}

.panel {
    background: var(--panel);
    border: 2px solid var(--panel-edge);
    border-radius: 14px;
    padding: 1rem 1.25rem;
}

.btn {
    font: inherit;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--felt-deep);
    background: linear-gradient(180deg, var(--gold) 0%, var(--gold-dim) 100%);
    border: 2px solid var(--gold-deep);
    border-radius: 10px;
    padding: 0.7em 1.4em;
    cursor: pointer;
    transition: filter 0.15s ease, transform 0.08s ease;
}

.btn:hover:not(:disabled) {
    filter: brightness(1.12);
}

.btn:active:not(:disabled) {
    transform: translateY(1px);
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-quiet {
    color: var(--ink);
    background: transparent;
    border-color: var(--ink-faint);
}

.btn-quiet:hover:not(:disabled) {
    border-color: var(--gold);
    color: var(--gold);
    filter: none;
}

.btn-danger {
    color: #fca5a5;
    background: rgba(69, 10, 10, 0.38);
    border-color: rgba(185, 28, 28, 0.72);
}

.btn-danger:hover:not(:disabled) {
    color: #fff;
    background: rgba(127, 29, 29, 0.58);
    border-color: #dc2626;
    filter: none;
}

/* Storage-unavailable warning. Shown only when persistence actually failed. */
.storage-warning {
    background: rgba(248, 113, 113, 0.14);
    border: 1px solid rgba(248, 113, 113, 0.45);
    color: #fecaca;
    border-radius: 10px;
    padding: 0.6em 1em;
    font-size: 0.85rem;
    text-align: center;
}

.storage-warning[hidden] {
    display: none;
}

/* === Bank readout (hub + table) === */
.bank {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    font-variant-numeric: tabular-nums;
}

.bank-label {
    font-size: 0.7rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-dim);
}

.bank-amount {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gold);
    line-height: 1;
}

/* ==========================================================================
   Hub
   ========================================================================== */

.hub {
    width: min(1400px, 100%);
    margin: 0 auto;
    padding: 1.5rem 1.25rem 4rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    flex: 1;
}

.hub-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.hub-title {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.hub-title h1 {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--gold);
    line-height: 1;
}

.welcome-to {
    font-size: clamp(1.65rem, 3.75vw, 2.625rem);
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.casino-name {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    font-size: clamp(4.05rem, 10.5vw, 6.9rem);
    font-weight: 900;
    letter-spacing: 0.06em;
    text-shadow: 0 2px 0 var(--gold-deep), 0 0 28px rgba(251, 191, 36, 0.28);
    text-transform: uppercase;
}

.casino-name > span:not(.word-space) {
    display: inline-block;
    animation: casino-sign-wave 5s ease-in-out infinite;
    animation-delay: calc(var(--wave) * -0.18s);
    transform-origin: center bottom;
}

.casino-name .word-space {
    width: 0.25em;
}

@keyframes casino-sign-wave {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-0.07em) rotate(-1.5deg); }
    50% { transform: translateY(0.05em) rotate(1deg); }
    75% { transform: translateY(-0.03em) rotate(-0.5deg); }
}

.hub-title p {
    color: var(--ink-dim);
    font-size: 1rem;
}

.bank-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: center;
}

.games-section {
    display: flex;
    flex-direction: column;
}

/* Game tiles */
/* Eight games form two tidy rows at desktop width; explicit columns avoid
   uneven orphan tiles across intermediate widths. */
.game-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}

@media (max-width: 900px) {
    .game-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 520px) {
    .game-grid {
        grid-template-columns: 1fr;
    }
}

.game-tile {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.85rem;
    text-align: center;
    text-decoration: none;
    color: inherit;
    background: var(--panel);
    border: 2px solid var(--panel-edge);
    border-radius: 18px;
    padding: 1.5rem 1.25rem;
    transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

a.game-tile:hover,
a.game-tile:focus-visible {
    transform: translateY(-5px);
    border-color: var(--gold);
    background: rgba(0, 0, 0, 0.45);
}

.game-tile.is-soon {
    opacity: 0.55;
}

.tile-art {
    --scale: 2;
    height: calc(64px * var(--scale));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* Fanned mini-hand for the poker tile. */
.tile-art .card-face + .card-face {
    margin-left: calc(-30px * var(--scale));
}

.tile-art .card-face {
    transform: rotate(var(--tilt, 0deg));
    transform-origin: bottom center;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.5));
}

.tile-name {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--gold);
}

.tile-desc {
    font-size: 0.85rem;
    color: var(--ink-dim);
    min-height: 2.4em;
}

.tile-badge {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    border-radius: 999px;
    padding: 0.35em 0.9em;
    background: rgba(251, 191, 36, 0.16);
    color: var(--gold);
    border: 1px solid var(--panel-edge);
}

.game-tile.is-soon .tile-badge {
    background: rgba(255, 255, 255, 0.06);
    color: var(--ink-dim);
    border-color: rgba(255, 255, 255, 0.12);
}

/* Casino pages are fixed desktop play surfaces. Short windows retain normal
   scrolling so no controls or content become unreachable. */
@media (min-width: 700px) and (min-height: 800px) {
    html,
    body {
        height: 100%;
        overflow: hidden;
    }

    .hub {
        height: 100dvh;
        overflow: hidden;
        padding-top: 1rem;
        padding-bottom: 1rem;
        gap: 1rem;
    }

    .hub-title {
        transform: translateY(-1.25rem);
    }

    .games-section {
        margin-top: 1.5rem;
    }

    .games-section,
    .game-grid {
        min-height: 0;
    }

    .game-grid {
        gap: 0.85rem;
        grid-auto-rows: clamp(220px, 26.88vh, 538px);
    }

    .game-tile {
        gap: 0.55rem;
        padding: 0.85rem;
    }

    .tile-art {
        --scale: 1;
        height: 88px;
        transform: scale(1.2);
        transform-origin: center;
    }

    .tile-name {
        font-size: 1.32rem;
    }

    .tile-desc {
        min-height: 2em;
        font-size: 0.94rem;
    }

    .tile-badge {
        font-size: 0.82rem;
    }

    .bank-actions {
        margin-top: auto;
    }

    .bank-actions .btn {
        font-size: 0.75em;
    }
}

@media (max-width: 560px) {
    .tile-art {
        --scale: 1;
    }
}

/* Large fullscreen tiles use a centered four-part composition so the artwork
   and labels occupy the card rather than collecting at its top edge. */
@media (min-width: 700px) and (min-height: 1000px) {
    .game-tile {
        display: grid;
        grid-template-rows: 140px auto minmax(2.2em, auto);
        align-content: center;
        justify-items: center;
        gap: 0.8rem;
    }

    .game-tile.is-soon {
        grid-template-rows: 140px auto minmax(2.2em, auto) auto;
    }

    .tile-art {
        --scale: 2;
        height: 140px;
        transform: none;
    }

    .tile-art > .chip:only-child {
        transform: scale(1.5);
    }
}

@media (prefers-reduced-motion: reduce) {

    a.game-tile:hover,
    a.game-tile:focus-visible {
        transform: none;
    }

    .casino-name > span:not(.word-space) {
        animation: none;
    }
}