/* Fredoka, self-hosted so no visitor data goes to Google (license: fonts/OFL.txt) */
@font-face {
    font-family: 'Fredoka';
    font-style: normal;
    font-weight: 400 700;
    font-display: swap;
    src: url('../fonts/fredoka-latin-ext.woff2') format('woff2');
    unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
    font-family: 'Fredoka';
    font-style: normal;
    font-weight: 400 700;
    font-display: swap;
    src: url('../fonts/fredoka-latin.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
    --ink: #0b0f1a;
    --surface: rgba(22, 29, 50, 0.72);
    --surface-solid: #161d32;
    --border: rgba(255, 255, 255, 0.09);
    --text: #eef1f8;
    --muted: #9aa3bb;
    --lime: #b6e94a;
    --lime-deep: #2a3814;
    --violet: #8b5cf6;
    --pink: #ff6fae;
    --cyan: #4fd8ff;

    /* Pair score colors (match the share emoji) */
    --lvl-1: #4ade80;
    --lvl-2: #a78bfa;
    --lvl-3: #60a5fa;
    --lvl-4: #facc15;
    --lvl-5: #f87171;
    --lvl-6: #3f475e;

    --radius: 18px;
    --dock-space: 96px;

    --gap: 14px;
    /* Height used by the HUD, level row, dock and padding */
    --chrome: 260px;
}

*, *::before, *::after {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    min-height: 100%;
}

body {
    min-height: 100dvh;
    font-family: 'Fredoka', system-ui, sans-serif;
    color: var(--text);
    background-color: var(--ink);
    background-image:
        radial-gradient(circle at 15% 10%, rgba(139, 92, 246, 0.22), transparent 40%),
        radial-gradient(circle at 85% 85%, rgba(182, 233, 74, 0.14), transparent 45%),
        radial-gradient(circle at 90% 15%, rgba(79, 216, 255, 0.10), transparent 35%),
        radial-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px);
    background-size: auto, auto, auto, 22px 22px;
    background-attachment: fixed;
    -webkit-tap-highlight-color: transparent;
}

a {
    color: var(--lime);
}

h1, h2 {
    margin: 0;
    font-weight: 600;
}

/* Page area, leaving room for the floating dock */
.stage {
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 20px var(--dock-space);
}

/* ---------- Floating dock ---------- */
.dock {
    position: fixed;
    left: 50%;
    bottom: max(16px, env(safe-area-inset-bottom));
    transform: translateX(-50%);
    z-index: 50;
    display: flex;
    gap: 4px;
    padding: 6px;
    border-radius: 999px;
    background: var(--surface);
    border: 1px solid var(--border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

.dock-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 999px;
    color: var(--muted);
    text-decoration: none;
    font-weight: 500;
    transition: background 0.2s, color 0.2s, transform 0.2s;
}

.dock-item svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.dock-item:hover {
    color: var(--text);
    transform: translateY(-2px);
}

.dock-item.active {
    background: var(--lime);
    color: var(--lime-deep);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-width: 200px;
    padding: 12px 24px;
    border: none;
    border-radius: 999px;
    font: inherit;
    font-weight: 600;
    font-size: 1.05rem;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
}

.btn svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.btn:active {
    transform: scale(0.96);
}

.btn-primary {
    background: var(--lime);
    color: var(--lime-deep);
    box-shadow: 0 6px 0 #7ea52b, 0 10px 24px rgba(182, 233, 74, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.12);
}

.btn-play {
    background: var(--lime);
    color: var(--lime-deep);
    font-size: 1.35rem;
    padding: 16px 40px;
    box-shadow: 0 7px 0 #7ea52b, 0 0 0 0 rgba(182, 233, 74, 0.5);
    animation: pulse 2.4s infinite;
}

.btn-play:hover {
    transform: translateY(-3px) rotate(-1deg);
}

@keyframes pulse {
    0%   { box-shadow: 0 7px 0 #7ea52b, 0 0 0 0 rgba(182, 233, 74, 0.45); }
    70%  { box-shadow: 0 7px 0 #7ea52b, 0 0 0 22px rgba(182, 233, 74, 0); }
    100% { box-shadow: 0 7px 0 #7ea52b, 0 0 0 0 rgba(182, 233, 74, 0); }
}

/* ---------- Home ---------- */
.hero {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    text-align: center;
    max-width: 520px;
}

.card-fan {
    position: relative;
    width: 180px;
    height: 130px;
    margin-bottom: 8px;
    animation: float 4s ease-in-out infinite;
}

.fan-card {
    position: absolute;
    left: 50%;
    top: 0;
    width: 88px;
    height: 120px;
    margin-left: -44px;
    border-radius: 14px;
    border: 1px solid rgba(182, 233, 74, 0.35);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45);
}

.fan-left  { transform: rotate(-16deg) translateX(-38px); background: linear-gradient(150deg, #5b3fc4, #2e2170); }
.fan-right { transform: rotate(16deg) translateX(38px); background: linear-gradient(150deg, #c2407f, #5e1d42); }

.fan-center {
    display: grid;
    place-items: center;
    background: linear-gradient(150deg, #2b3f6e, #151f3d);
}

.fan-center img {
    width: 62px;
    filter: drop-shadow(0 0 10px rgba(255, 143, 196, 0.5));
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-8px); }
}

.title {
    font-size: clamp(3rem, 14vw, 5rem);
    font-weight: 700;
    line-height: 1;
    letter-spacing: 1px;
}

.title span {
    display: inline-block;
    background: linear-gradient(180deg, #fff 20%, var(--lime) 120%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: hop 3s ease-in-out infinite;
    animation-delay: calc(var(--i) * 0.12s);
}

@keyframes hop {
    0%, 60%, 100% { transform: translateY(0) rotate(0); }
    30%           { transform: translateY(-10px) rotate(-4deg); }
}

.tagline {
    margin: 0 0 12px;
    color: var(--muted);
    font-size: 1.1rem;
}

/* Level picker */
.level-picker {
    display: flex;
    gap: 10px;
    margin-bottom: 6px;
}

.level-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    width: 104px;
    padding: 12px 8px 10px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--muted);
    font: inherit;
    cursor: pointer;
    transition: transform 0.15s, border-color 0.2s, color 0.2s, box-shadow 0.2s;
}

.level-option:hover {
    transform: translateY(-2px);
    color: var(--text);
}

.level-option[aria-checked="true"] {
    border-color: var(--lime);
    color: var(--text);
    box-shadow: 0 0 0 1px var(--lime), 0 8px 24px rgba(182, 233, 74, 0.18);
}

/* Tiny card grid that grows with the level */
.level-grid {
    display: grid;
    grid-template-columns: repeat(var(--grid-cols), 7px);
    gap: 2px;
    height: 34px;
    align-content: center;
}

.level-grid i {
    width: 7px;
    height: 7px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.18);
}

.level-option[aria-checked="true"] .level-grid i {
    background: var(--pink);
}

.level-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.level-cards {
    font-size: 0.75rem;
    color: var(--muted);
}

.home-best {
    margin: 6px 0 0;
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(182, 233, 74, 0.12);
    color: var(--lime);
    font-weight: 500;
}

.legend {
    display: flex;
    gap: 6px;
    margin-top: 18px;
}

.swatch {
    display: inline-block;
    width: 18px;
    height: 18px;
    border-radius: 5px;
    flex-shrink: 0;
}

.lvl-1 { background: var(--lvl-1); }
.lvl-2 { background: var(--lvl-2); }
.lvl-3 { background: var(--lvl-3); }
.lvl-4 { background: var(--lvl-4); }
.lvl-5 { background: var(--lvl-5); }
.lvl-6 { background: var(--lvl-6); }

.legend .swatch {
    animation: hop 3s ease-in-out infinite;
    animation-delay: calc(var(--d, 0) * 1s);
}

.legend .swatch:nth-child(2) { --d: 0.1; }
.legend .swatch:nth-child(3) { --d: 0.2; }
.legend .swatch:nth-child(4) { --d: 0.3; }
.legend .swatch:nth-child(5) { --d: 0.4; }
.legend .swatch:nth-child(6) { --d: 0.5; }

.fine-print {
    margin: 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.credit {
    margin: 24px 0 0;
    color: var(--muted);
    font-size: 0.8rem;
    opacity: 0.7;
}

.credit a {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.credit a:hover {
    color: var(--lime);
}

/* ---------- Game HUD ---------- */
.game {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.play-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.hud {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
}

.pill {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 999px;
    background: var(--surface);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    font-variant-numeric: tabular-nums;
}

.pill svg {
    width: 18px;
    height: 18px;
    fill: var(--lime);
}

.pill strong {
    font-weight: 600;
    font-size: 1.05rem;
}

/* Reserve room for each number's usual longest value, so pills don't resize as numbers
   change. Resizing made the last pill wrap to a new line and the board jump on phones */
#moves {
    display: inline-block;
    min-width: 2ch;
    text-align: center;
}

#score,
#best {
    display: inline-block;
    min-width: 4ch;
    text-align: center;
}

.pill-label {
    color: var(--muted);
    font-size: 0.9rem;
}

.pill-best svg {
    fill: var(--lvl-4);
}

/* Sound on/off button, styled like the other pills */
.pill-sound {
    color: var(--text);
    font: inherit;
    cursor: pointer;
}

.pill-sound svg {
    fill: var(--text);
}

.pill-sound[aria-pressed="true"] .icon-off,
.pill-sound[aria-pressed="false"] .icon-on {
    display: none;
}

.pill-sound[aria-pressed="false"] svg {
    fill: var(--muted);
}

.pill-score svg {
    fill: var(--pink);
}

.pill.bump {
    animation: bump 0.3s ease;
}

@keyframes bump {
    50% { transform: scale(1.12); }
}

/* Level badge and pair progress share one row */
.level-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 14px 0 18px;
}

.level-badge {
    padding: 3px 10px;
    border-radius: 999px;
    border: 1px solid rgba(182, 233, 74, 0.45);
    color: var(--lime);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    white-space: nowrap;
}

.progress {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.progress-dot {
    width: 12px;
    height: 12px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.1);
    transition: background 0.3s, transform 0.3s;
}

.progress-dot.filled {
    transform: scale(1.25) rotate(45deg);
}

/* ---------- Board ---------- */
.board-wrap {
    position: relative;
}

/* Grid per level (wide screens). Portrait and short-landscape versions are under Responsive.
   Level 1: 4x3 (12 cards), Level 2: 4x4 (16), Level 3: 6x4 (24) */
.game-board {
    --cols: 4;
    --rows: 3;
    /* Defined here, not on :root, so it uses this board's columns and rows */
    --card: min(
        calc((100vw - 40px - (var(--cols) - 1) * var(--gap)) / var(--cols)),
        calc((100dvh - var(--chrome) - (var(--rows) - 1) * var(--gap)) / var(--rows)),
        170px
    );
    display: grid;
    grid-template-columns: repeat(var(--cols), var(--card));
    grid-auto-rows: var(--card);
    gap: var(--gap);
    justify-content: center;
}

.game-board[data-level="2"] {
    --cols: 4;
    --rows: 4;
}

.game-board[data-level="3"] {
    --cols: 6;
    --rows: 4;
}

.card {
    position: relative;
    perspective: 900px;
    cursor: pointer;
    animation: deal 0.45s cubic-bezier(0.34, 1.56, 0.64, 1) both;
    animation-delay: calc(var(--i, 0) * 45ms);
}

@keyframes deal {
    from { opacity: 0; transform: translateY(30px) scale(0.6) rotate(-8deg); }
    to   { opacity: 1; transform: none; }
}

.card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.55s cubic-bezier(0.34, 1.4, 0.64, 1);
    transform-style: preserve-3d;
}

.card:not(.flipped):hover .card-inner {
    transform: translateY(-4px) rotate(-1.5deg);
}

.card.flipped .card-inner {
    transform: rotateY(180deg);
}

.card-front, .card-back {
    position: absolute;
    inset: 0;
    border-radius: var(--radius);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.card-front {
    overflow: hidden;
    background: var(--ink);
    border: 3px solid #fff;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.45);
    transform: rotateY(180deg);
}

/* Safari ignores overflow clipping on rotated 3D elements, so the blurred
   backdrop is clipped with a mask instead, which Safari does respect */
.card-front.has-backdrop {
    -webkit-mask-image: linear-gradient(#000, #000);
    mask-image: linear-gradient(#000, #000);
}

/* The same photo, zoomed to fill and softly blurred, behind photos that aren't square */
.card-front.has-backdrop::before {
    content: '';
    position: absolute;
    inset: -8px;
    background: var(--img) center / cover;
    filter: blur(6px);
}

/* The whole photo, uncropped and centered */
.card-photo {
    position: absolute;
    inset: 0;
    margin: auto;
    max-width: 100%;
    max-height: 100%;
    /* Round the photo itself: Safari doesn't clip it to the card's corners once flipped */
    border-radius: calc(var(--radius) - 3px);
    pointer-events: none;
}

/* Non-square photos are clipped by the card's mask instead, so they stay square-cornered */
.card-photo.landscape,
.card-photo.portrait {
    border-radius: 0;
}

/* Feather the edges that meet the background so there's no visible line */
.card-photo.landscape {
    -webkit-mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 86%, transparent);
    mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 86%, transparent);
}

.card-photo.portrait {
    -webkit-mask-image: linear-gradient(to right, transparent, #000 14%, #000 86%, transparent);
    mask-image: linear-gradient(to right, transparent, #000 14%, #000 86%, transparent);
}

/* Card back: a happy little brain on a circuit board */
.card-back {
    background:
        url('/static/icons/brain.svg') center / 52% no-repeat,
        radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.12), transparent 50%),
        repeating-linear-gradient(90deg, transparent 0 18px, rgba(182, 233, 74, 0.06) 18px 19px),
        repeating-linear-gradient(0deg, transparent 0 18px, rgba(182, 233, 74, 0.06) 18px 19px),
        linear-gradient(150deg, #2b3f6e, #151f3d);
    border: 1px solid rgba(182, 233, 74, 0.3);
    box-shadow: 0 8px 0 #0d1428, 0 14px 24px rgba(0, 0, 0, 0.4);
}

.card:not(.flipped):hover .card-back {
    border-color: rgba(182, 233, 74, 0.7);
    box-shadow: 0 8px 0 #0d1428, 0 0 24px rgba(182, 233, 74, 0.3);
}

.card.matched {
    cursor: default;
}

.card.matched .card-inner {
    animation: celebrate 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.card.matched .card-front {
    border-color: var(--pair-color, var(--lime));
    box-shadow: 0 0 0 3px var(--pair-color, var(--lime)), 0 0 26px var(--pair-color, var(--lime));
}

@keyframes celebrate {
    0%   { transform: rotateY(180deg) scale(1); }
    40%  { transform: rotateY(180deg) scale(1.12); }
    100% { transform: rotateY(180deg) scale(1); }
}

/* Shake the inner element so the card's deal animation doesn't replay */
.card.nope .card-inner {
    animation: shake 0.4s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0) rotateY(180deg); }
    20%      { transform: translateX(-7px) rotateZ(-2deg) rotateY(180deg); }
    40%      { transform: translateX(7px) rotateZ(2deg) rotateY(180deg); }
    60%      { transform: translateX(-5px) rotateY(180deg); }
    80%      { transform: translateX(5px) rotateY(180deg); }
}

/* Sparkles that burst out of a matched card */
.sparkle {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 8px;
    height: 8px;
    margin: -4px 0 0 -4px;
    border-radius: 2px;
    background: var(--c);
    pointer-events: none;
    z-index: 5;
    animation: sparkle 0.7s ease-out forwards;
}

@keyframes sparkle {
    from { transform: translate(0, 0) scale(1) rotate(0); opacity: 1; }
    to   { transform: translate(var(--dx), var(--dy)) scale(0) rotate(180deg); opacity: 0; }
}

/* Floating message over the board */
.toast {
    position: absolute;
    left: 50%;
    top: 50%;
    z-index: 10;
    padding: 10px 22px;
    border-radius: 999px;
    background: var(--violet);
    color: #fff;
    font-size: 1.4rem;
    font-weight: 700;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.5);
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.5);
}

.toast.toast-slip {
    background: var(--lvl-5);
    box-shadow: 0 10px 30px rgba(248, 113, 113, 0.45);
}

.toast.show {
    animation: toast 1.1s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes toast {
    0%   { opacity: 0; transform: translate(-50%, -30%) scale(0.5) rotate(-6deg); }
    20%  { opacity: 1; transform: translate(-50%, -50%) scale(1) rotate(-3deg); }
    75%  { opacity: 1; transform: translate(-50%, -60%) scale(1) rotate(-3deg); }
    100% { opacity: 0; transform: translate(-50%, -90%) scale(0.9) rotate(-3deg); }
}

/* ---------- Results overlay ---------- */
.results-overlay {
    position: fixed;
    inset: 0;
    overflow-y: auto; /* Safety net only; the card is sized to fit without scrolling */
    z-index: 100;
    display: grid;
    place-items: center;
    padding: 20px;
    background: rgba(5, 8, 16, 0.6);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    animation: fade-in 0.3s ease;
}

@keyframes fade-in {
    from { opacity: 0; }
}

.results-container {
    width: 100%;
    max-width: 380px;
    padding: 28px 22px 22px;
    border-radius: 28px;
    background: var(--surface-solid);
    border: 1px solid var(--border);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
    text-align: center;
    animation: pop-in 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes pop-in {
    from { opacity: 0; transform: scale(0.7) translateY(30px); }
}

.results-container h2 {
    font-size: 1.8rem;
}

.stars {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin: 10px 0 6px;
    font-size: 2.6rem;
    line-height: 1;
}

.star {
    color: rgba(255, 255, 255, 0.15);
    animation: star-pop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) both;
    animation-delay: calc(0.3s + var(--i) * 0.18s);
}

.star.earned {
    color: var(--lvl-4);
    text-shadow: 0 0 18px rgba(250, 204, 21, 0.6);
}

@keyframes star-pop {
    from { opacity: 0; transform: scale(0) rotate(-90deg); }
}

.results-score {
    margin: 8px 0 0;
    font-size: 1.2rem;
}

.results-score strong {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--lime);
}

.results-stats {
    margin: 0 0 10px;
    color: var(--muted);
}

.results-session {
    margin: 8px 0 0;
    color: var(--muted);
    font-size: 0.85rem;
}

.results-best {
    display: inline-block;
    margin: 0 0 4px;
    color: var(--muted);
}

.results-best.new {
    padding: 4px 14px;
    border-radius: 999px;
    background: var(--pink);
    color: #fff;
    font-weight: 600;
    animation: wiggle 1s ease-in-out 0.9s 2;
}

@keyframes wiggle {
    25% { transform: rotate(-4deg) scale(1.06); }
    75% { transform: rotate(4deg) scale(1.06); }
}

/* Up to 6 squares per row (Level 3 has 12) */
.results-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    max-width: 220px;
    margin: 18px auto 22px;
}

.results-level {
    margin: 0 0 4px;
    color: var(--lime);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.results-grid .swatch {
    width: 30px;
    height: 30px;
    border-radius: 8px;
    animation: star-pop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) both;
    animation-delay: calc(0.6s + var(--i) * 0.08s);
}

.results-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

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

/* Brings the scorecard back while admiring the board */
.results-chip {
    position: fixed;
    left: 50%;
    bottom: calc(max(16px, env(safe-area-inset-bottom)) + 72px);
    z-index: 60;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border: none;
    border-radius: 999px;
    background: var(--violet);
    color: #fff;
    font: inherit;
    font-size: 1rem;
    white-space: nowrap;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.5);
    transform: translateX(-50%);
    animation: chip-in 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.results-chip[hidden] {
    display: none;
}

.results-chip:hover {
    background: #9b70ff;
}

.results-chip-stars {
    color: var(--lvl-4);
    letter-spacing: 1px;
}

@keyframes chip-in {
    from { opacity: 0; transform: translate(-50%, 30px) scale(0.8); }
}

/* Finished board does a little wave when revealed */
.game-board.admiring .card .card-inner {
    animation: wave 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both;
    animation-delay: calc(var(--i) * 50ms);
}

@keyframes wave {
    0%, 100% { transform: rotateY(180deg) translateY(0); }
    40%      { transform: rotateY(180deg) translateY(-12px) scale(1.04); }
}

.confetti {
    position: fixed;
    inset: 0;
    z-index: 101;
    pointer-events: none;
}

/* ---------- About ---------- */
.about {
    width: 100%;
    max-width: 640px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.page-title {
    font-size: 2.4rem;
    text-align: center;
}

.lead {
    margin: 0 0 6px;
    color: var(--muted);
    text-align: center;
    font-size: 1.1rem;
}

.panel {
    padding: 18px 20px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--border);
}

.panel h2 {
    font-size: 1.2rem;
    margin-bottom: 6px;
}

.panel p {
    margin: 0;
}

.muted {
    color: var(--muted);
}

.steps {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.steps .panel {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.steps p {
    color: var(--muted);
    font-size: 0.95rem;
}

.step-num {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: var(--lime);
    color: var(--lime-deep);
    font-weight: 700;
    transform: rotate(-6deg);
}

.steps .panel:nth-child(2) .step-num { background: var(--violet); color: #fff; transform: rotate(5deg); }
.steps .panel:nth-child(3) .step-num { background: var(--pink); color: #fff; transform: rotate(-3deg); }

.rating-list, .legend-list {
    list-style: none;
    margin: 8px 0 10px;
    padding: 0;
    display: grid;
    gap: 8px;
}

.legend-list {
    grid-template-columns: repeat(2, 1fr);
}

.rating-list li, .legend-list li {
    display: flex;
    align-items: center;
    gap: 10px;
}

.rating {
    color: var(--lvl-4);
    letter-spacing: 2px;
    min-width: 64px;
}

.privacy {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.privacy .btn {
    min-width: 0;
    flex-shrink: 0;
}

.btn-danger {
    background: rgba(248, 113, 113, 0.12);
    color: var(--lvl-5);
    border: 1px solid rgba(248, 113, 113, 0.4);
}

.btn-danger:hover, .btn-danger.confirming {
    background: var(--lvl-5);
    color: #fff;
}

.btn-danger:disabled {
    background: rgba(74, 222, 128, 0.12);
    border-color: rgba(74, 222, 128, 0.4);
    color: var(--lvl-1);
    cursor: default;
}

.about .credit {
    text-align: center;
    margin-top: 8px;
}

/* ---------- Responsive ---------- */

/* Portrait tablets and phones: Level 1 3x4, Level 2 4x4, Level 3 4x6 */
@media (max-width: 767px), (orientation: portrait) {
    .game-board {
        --cols: 3;
        --rows: 4;
    }

    .game-board[data-level="2"] {
        --cols: 4;
        --rows: 4;
    }

    .game-board[data-level="3"] {
        --cols: 4;
        --rows: 6;
    }
}

/* Short landscape screens (phones on their side): Level 1 6x2, Level 2 8x2, Level 3 8x3 */
@media (orientation: landscape) and (max-height: 500px) {
    .game-board {
        --cols: 6;
        --rows: 2;
    }

    .game-board[data-level="2"] {
        --cols: 8;
        --rows: 2;
    }

    .game-board[data-level="3"] {
        --cols: 8;
        --rows: 3;
    }

    :root {
        --chrome: 200px;
        --gap: 10px;
        --dock-space: 80px;
    }

    .stage {
        padding-top: 12px;
    }

    .level-row {
        margin: 8px 0 10px;
    }
}

@media (max-width: 575px) {
    :root {
        --gap: 10px;
        --radius: 14px;
        --chrome: 240px;
    }

    .stage {
        padding: 16px 16px var(--dock-space);
    }

    .hud {
        gap: 5px;
    }

    .pill {
        gap: 4px;
        padding: 6px 9px;
    }

    .pill svg {
        width: 15px;
        height: 15px;
    }

    .pill strong {
        font-size: 0.95rem;
    }

    .pill-label {
        display: none;
    }

    .dock-item {
        padding: 10px 14px;
    }

    .steps {
        grid-template-columns: 1fr;
    }

    .steps .panel {
        flex-direction: row;
        align-items: flex-start;
    }

    .legend-list {
        grid-template-columns: 1fr;
    }

    .privacy {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }
}

/* Narrow phones (e.g. 360px Android): tighten the header a little more so it stays on one line */
@media (max-width: 374px) {
    .stage {
        padding-left: 10px;
        padding-right: 10px;
    }

    .hud {
        gap: 4px;
    }

    .pill {
        gap: 3px;
        padding: 5px 7px;
    }

    .pill strong {
        font-size: 0.9rem;
    }
}

/* ---------- Never scroll: fit the home page and results card to short screens ---------- */

/* Shorter screens: drop the decorative card fan first */
@media (max-height: 800px) {
    .card-fan {
        display: none;
    }
}

/* Small phones: also drop the color legend and its caption */
@media (max-height: 680px) {
    .legend,
    .fine-print {
        display: none;
    }

    .credit {
        margin-top: 8px;
    }
}

/* Results card on short screens: tighter spacing, smaller stars and score */
@media (max-height: 720px) {
    .results-overlay {
        padding: 10px;
    }

    .results-container {
        padding: 16px 18px 14px;
    }

    .results-container h2 {
        font-size: 1.4rem;
    }

    .stars {
        margin: 4px 0 2px;
        font-size: 1.8rem;
    }

    .results-score strong {
        font-size: 1.8rem;
    }

    .results-stats {
        margin-bottom: 4px;
        font-size: 0.9rem;
    }

    .results-session {
        display: none;
    }

    .results-grid {
        gap: 6px;
        margin: 10px auto 12px;
    }

    .results-grid .swatch {
        width: 22px;
        height: 22px;
        border-radius: 6px;
    }

    .results-actions {
        gap: 8px;
    }

    .results-actions .btn {
        padding: 9px 20px;
        font-size: 0.95rem;
    }
}

/* Phones held sideways: compact home, two-column results card */
@media (orientation: landscape) and (max-height: 500px) {
    .hero {
        gap: 8px;
    }

    .title {
        font-size: 2.6rem;
    }

    .tagline,
    .legend,
    .fine-print {
        display: none;
    }

    .level-option {
        flex-direction: row;
        gap: 8px;
        width: auto;
        padding: 8px 12px;
    }

    .level-grid {
        height: auto;
        grid-template-columns: repeat(var(--grid-cols), 5px);
    }

    .level-grid i {
        width: 5px;
        height: 5px;
    }

    .btn-play {
        padding: 10px 30px;
        font-size: 1.1rem;
    }

    .home-best {
        margin: 0;
    }

    .credit {
        margin-top: 0;
    }

    .results-container {
        display: grid;
        grid-template-columns: 1fr auto;
        column-gap: 24px;
        align-items: center;
        max-width: 620px;
    }

    .results-container > * {
        grid-column: 1;
        justify-self: center;
    }

    .results-container > .results-actions {
        grid-column: 2;
        grid-row: 1 / span 9;
    }

    .results-actions .btn {
        min-width: 180px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}