/* =========================================================
   Funcle - design tokens
   ========================================================= */
:root {
    /* Brand */
    --brand-1: #6366f1;
    --brand-2: #8b5cf6;
    --brand-3: #06b6d4;

    /* Semantic (feedback) */
    --correct: #10b981;
    --correct-2: #059669;
    --present: #f59e0b;
    --present-2: #d97706;
    --absent: #6b7280;
    --absent-2: #4b5563;
    --danger: #ef4444;

    /* Surfaces - light */
    --bg: #eef1fb;
    --bg-accent-1: rgba(99, 102, 241, .30);
    --bg-accent-2: rgba(6, 182, 212, .22);
    --bg-accent-3: rgba(139, 92, 246, .22);
    --surface: rgba(255, 255, 255, .82);
    --surface-solid: #ffffff;
    --surface-2: rgba(255, 255, 255, .55);
    --sunken: rgba(99, 102, 241, .06);
    --border: rgba(15, 23, 42, .10);
    --border-strong: rgba(15, 23, 42, .18);

    /* Text */
    --text: #111827;
    --text-2: #4b5563;
    --text-3: #6b7280;
    --on-brand: #ffffff;

    /* Plot (read by JS) */
    --plot-bg: #ffffff;
    --plot-grid: #e8ecf5;
    --plot-zero: #a5adba;
    --plot-line: #6366f1;
    --plot-text: #6b7280;

    /* Shape */
    --r-sm: 8px;
    --r-md: 12px;
    --r-lg: 18px;
    --r-xl: 24px;

    --sh-sm: 0 1px 2px rgba(16, 24, 40, .06);
    --sh-md: 0 4px 12px rgba(16, 24, 40, .08);
    --sh-lg: 0 12px 32px rgba(16, 24, 40, .10);
    --sh-xl: 0 24px 60px rgba(16, 24, 40, .14);
    --ring: 0 0 0 3px rgba(99, 102, 241, .32);

    --ease: cubic-bezier(.4, 0, .2, 1);
    --t: .22s var(--ease);

    --mono: 'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* Dark - system preference, unless explicitly set to light */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg: #0b1020;
        --bg-accent-1: rgba(99, 102, 241, .26);
        --bg-accent-2: rgba(6, 182, 212, .16);
        --bg-accent-3: rgba(139, 92, 246, .20);
        --surface: rgba(23, 29, 51, .78);
        --surface-solid: #171d33;
        --surface-2: rgba(255, 255, 255, .04);
        --sunken: rgba(255, 255, 255, .04);
        --border: rgba(255, 255, 255, .10);
        --border-strong: rgba(255, 255, 255, .18);

        --text: #e8ecf7;
        --text-2: #aab3cc;
        --text-3: #8b93ad;

        --plot-bg: #131a2e;
        --plot-grid: #232c47;
        --plot-zero: #4a5578;
        --plot-line: #818cf8;
        --plot-text: #8b93ad;

        --sh-sm: 0 1px 2px rgba(0, 0, 0, .4);
        --sh-md: 0 4px 12px rgba(0, 0, 0, .35);
        --sh-lg: 0 12px 32px rgba(0, 0, 0, .45);
        --sh-xl: 0 24px 60px rgba(0, 0, 0, .55);
    }
}

/* Dark - explicit choice */
:root[data-theme="dark"] {
    --bg: #0b1020;
    --bg-accent-1: rgba(99, 102, 241, .26);
    --bg-accent-2: rgba(6, 182, 212, .16);
    --bg-accent-3: rgba(139, 92, 246, .20);
    --surface: rgba(23, 29, 51, .78);
    --surface-solid: #171d33;
    --surface-2: rgba(255, 255, 255, .04);
    --sunken: rgba(255, 255, 255, .04);
    --border: rgba(255, 255, 255, .10);
    --border-strong: rgba(255, 255, 255, .18);

    --text: #e8ecf7;
    --text-2: #aab3cc;
    --text-3: #8b93ad;

    --plot-bg: #131a2e;
    --plot-grid: #232c47;
    --plot-zero: #4a5578;
    --plot-line: #818cf8;
    --plot-text: #8b93ad;

    --sh-sm: 0 1px 2px rgba(0, 0, 0, .4);
    --sh-md: 0 4px 12px rgba(0, 0, 0, .35);
    --sh-lg: 0 12px 32px rgba(0, 0, 0, .45);
    --sh-xl: 0 24px 60px rgba(0, 0, 0, .55);
}

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

* { margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100dvh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    transition: background-color .3s var(--ease), color .3s var(--ease);
}

/* Reset des icônes inline UNIQUEMENT. Un `svg { ... }` global casserait le
   rendu Plotly, dont les <svg> internes sont dimensionnés par attributs. */
.icon-btn svg,
.key svg,
.card-icon {
    width: 1em;
    height: 1em;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }

a { color: var(--brand-1); }

:focus-visible {
    outline: 2px solid var(--brand-1);
    outline-offset: 2px;
    border-radius: 4px;
}

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

.skip-link {
    position: absolute; left: 50%; top: 0;
    transform: translate(-50%, -200%);
    background: var(--brand-1); color: #fff;
    padding: .6rem 1rem; border-radius: 0 0 var(--r-md) var(--r-md);
    z-index: 2000; text-decoration: none; font-weight: 600;
    transition: transform var(--t);
}
.skip-link:focus { transform: translate(-50%, 0); }

.hidden { display: none !important; }

/* Ambient background */
.aurora {
    position: fixed; inset: 0; z-index: -1; pointer-events: none;
    background:
        radial-gradient(60rem 40rem at 12% 18%, var(--bg-accent-1) 0%, transparent 60%),
        radial-gradient(50rem 36rem at 88% 12%, var(--bg-accent-2) 0%, transparent 60%),
        radial-gradient(55rem 40rem at 50% 95%, var(--bg-accent-3) 0%, transparent 62%);
}

.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 1.25rem 1rem 3rem;
    padding-bottom: max(3rem, env(safe-area-inset-bottom));
}

/* =========================================================
   Header
   ========================================================= */
.header { margin-bottom: 1.25rem; }

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

.logo { display: flex; align-items: center; gap: .75rem; min-width: 0; }

.logo-icon {
    font-size: 2.4rem;
    line-height: 1;
    font-weight: 700;
    background: linear-gradient(135deg, var(--brand-1), var(--brand-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.title {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 900;
    letter-spacing: -.03em;
    line-height: 1.05;
    background: linear-gradient(120deg, var(--brand-1), var(--brand-2) 55%, var(--brand-3));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: .85rem;
    color: var(--text-2);
    font-weight: 500;
}

.header-actions { display: flex; gap: .4rem; flex-shrink: 0; }

.icon-btn {
    width: 42px; height: 42px;
    display: grid; place-items: center;
    font-size: 1.15rem;
    color: var(--text-2);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    box-shadow: var(--sh-sm);
    transition: var(--t);
}
.icon-btn:hover {
    color: var(--brand-1);
    border-color: var(--brand-1);
    transform: translateY(-1px);
    box-shadow: var(--sh-md);
}
.icon-btn:active { transform: translateY(0); }

/* Theme icon swap */
.icon-moon { display: none; }
:root[data-theme="dark"] .icon-sun { display: none; }
:root[data-theme="dark"] .icon-moon { display: block; }
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .icon-sun { display: none; }
    :root:not([data-theme="light"]) .icon-moon { display: block; }
}

/* Difficulty pills */
.levels-track {
    display: flex;
    gap: .4rem;
    padding: .35rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    box-shadow: var(--sh-sm);
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
}
.levels-track::-webkit-scrollbar { display: none; }

.level-pill {
    flex: 1 1 0;
    min-width: max-content;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    padding: .55rem .8rem;
    border-radius: var(--r-md);
    font-size: .82rem;
    font-weight: 600;
    color: var(--text-2);
    white-space: nowrap;
    transition: var(--t);
}
.level-pill:hover { background: var(--sunken); color: var(--text); }

.level-pill[aria-selected="true"] {
    background: linear-gradient(135deg, var(--brand-1), var(--brand-2));
    color: #fff;
    box-shadow: 0 6px 16px rgba(99, 102, 241, .35);
}

.level-emoji { font-size: .95rem; }
.level-state { font-size: .8rem; }
.level-pill[data-status="won"] .level-state::before { content: "\2705"; }
.level-pill[data-status="lost"] .level-state::before { content: "\274C"; }
.level-pill[data-status="playing"] .level-state::before { content: "\2022"; opacity: .7; }

/* =========================================================
   Layout
   ========================================================= */
.game-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 1.25rem;
    align-items: start;
}

.card {
    background: var(--surface);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 1.25rem;
    box-shadow: var(--sh-lg);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
    padding-bottom: .85rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.card-title {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -.01em;
}

.card-icon { font-size: 1.15rem; color: var(--brand-1); }

.ghost-btn {
    padding: .42rem .8rem;
    font-size: .78rem;
    font-weight: 600;
    color: var(--text-2);
    background: var(--sunken);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    transition: var(--t);
}
.ghost-btn:hover { color: var(--brand-1); border-color: var(--brand-1); }
.ghost-btn.danger { color: var(--danger); width: 100%; margin-top: 1.25rem; }
.ghost-btn.danger:hover { border-color: var(--danger); background: rgba(239, 68, 68, .08); }

/* =========================================================
   Graph
   ========================================================= */
.graph-container {
    position: relative;
    height: clamp(240px, 34vh, 340px);
    border-radius: var(--r-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--plot-bg);
    margin-bottom: 1rem;
}

.graph-plot { width: 100%; height: 100%; }

.graph-hint {
    position: absolute;
    right: .5rem; top: .45rem;
    font-size: .68rem;
    color: var(--text-3);
    background: var(--surface-solid);
    padding: .18rem .5rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    pointer-events: none;
    opacity: .9;
}

.formula-card {
    background: var(--sunken);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    padding: .8rem .9rem;
    margin-bottom: .85rem;
}

.formula-label {
    display: block;
    font-size: .68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--text-3);
    margin-bottom: .35rem;
}

.formula {
    font-family: var(--mono);
    font-size: .92rem;
    font-weight: 500;
    color: var(--brand-1);
    line-height: 1.6;
    overflow-wrap: anywhere;
}

.formula-sample {
    background: var(--sunken);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    padding: .6rem .75rem;
    margin: .6rem 0;
    text-align: center;
}

.chips { display: flex; flex-wrap: wrap; gap: .4rem; list-style: none; }

.chip {
    font-size: .72rem;
    color: var(--text-2);
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: .3rem .65rem;
}
.chip strong { color: var(--text); font-family: var(--mono); }

/* =========================================================
   Board
   ========================================================= */
.attempt-counter {
    display: flex;
    align-items: baseline;
    gap: .1rem;
    background: var(--sunken);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: .25rem .7rem;
    font-family: var(--mono);
}
.counter-number { font-size: 1rem; font-weight: 700; color: var(--brand-1); }
.counter-total { font-size: .8rem; color: var(--text-3); }

.board-wrapper {
    --cell: clamp(42px, 11vw, 56px);
    --gap: .45rem;
    width: max-content;
    max-width: 100%;
    margin: 0 auto 1.1rem;
}

.board-labels,
.attempt-row {
    display: grid;
    grid-template-columns: repeat(5, var(--cell));
    gap: var(--gap);
}

.board-labels {
    margin-bottom: .4rem;
}
.board-labels span {
    text-align: center;
    font-family: var(--mono);
    font-size: .72rem;
    font-weight: 700;
    color: var(--text-3);
    letter-spacing: .05em;
}

.game-board { display: grid; gap: var(--gap); }

.cell {
    width: var(--cell);
    height: var(--cell);
    display: grid;
    place-items: center;
    font-family: var(--mono);
    font-size: clamp(1.1rem, 3.5vw, 1.4rem);
    font-weight: 700;
    border: 2px solid var(--border-strong);
    border-radius: var(--r-md);
    background: transparent;
    color: var(--text);
    transition: border-color .12s var(--ease), transform .12s var(--ease), background-color .12s var(--ease);
}

.cell.filled {
    border-color: var(--brand-1);
    animation: pop .12s var(--ease);
}

/* active row: the slot waiting for input */
.cell.active {
    border-color: var(--brand-1);
    box-shadow: var(--ring);
}

.cell.correct,
.cell.present,
.cell.absent {
    color: #fff;
    border-color: transparent;
}
.cell.correct { background: linear-gradient(140deg, var(--correct), var(--correct-2)); }
.cell.present { background: linear-gradient(140deg, var(--present), var(--present-2)); }
.cell.absent  { background: linear-gradient(140deg, var(--absent),  var(--absent-2)); }

.cell.reveal { animation: flip .5s var(--ease) both; }

.attempt-row.shake { animation: shake .4s var(--ease); }

@keyframes pop {
    0% { transform: scale(1); }
    45% { transform: scale(1.09); }
    100% { transform: scale(1); }
}
@keyframes flip {
    0%   { transform: rotateX(0); }
    50%  { transform: rotateX(90deg); }
    100% { transform: rotateX(0); }
}
@keyframes shake {
    10%, 90% { transform: translateX(-2px); }
    20%, 80% { transform: translateX(4px); }
    30%, 50%, 70% { transform: translateX(-6px); }
    40%, 60% { transform: translateX(6px); }
}

/* =========================================================
   Keypad
   ========================================================= */
.keypad {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: .4rem;
    max-width: 380px;
    margin: 0 auto 1.25rem;
}

.key {
    height: 46px;
    display: grid;
    place-items: center;
    font-family: var(--mono);
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
    background: var(--surface-solid);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    box-shadow: var(--sh-sm);
    transition: transform .1s var(--ease), background-color var(--t), border-color var(--t), opacity var(--t);
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}
.key:hover { border-color: var(--brand-1); color: var(--brand-1); }
.key:active { transform: scale(.94); }

.key[data-key="Backspace"] { grid-column: span 2; font-size: 1.1rem; }

.key-enter {
    grid-column: span 3;
    font-family: 'Inter', sans-serif;
    font-size: .85rem;
    letter-spacing: .02em;
    color: #fff;
    background: linear-gradient(135deg, var(--brand-1), var(--brand-2));
    border-color: transparent;
    box-shadow: 0 6px 16px rgba(99, 102, 241, .32);
}
.key-enter:hover { color: #fff; filter: brightness(1.06); }
.key-enter:disabled {
    background: var(--sunken);
    color: var(--text-3);
    border: 1px solid var(--border);
    box-shadow: none;
    cursor: not-allowed;
    filter: none;
}

/* =========================================================
   End-of-game messages
   ========================================================= */
.game-message {
    text-align: center;
    padding: 1.35rem 1.1rem;
    border-radius: var(--r-lg);
    border: 1px solid var(--border);
    margin-bottom: 1.1rem;
    animation: rise .35s var(--ease) both;
}

@keyframes rise {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

.win-message  { background: linear-gradient(160deg, rgba(16, 185, 129, .14), rgba(16, 185, 129, .05)); border-color: rgba(16, 185, 129, .4); }
.lose-message { background: linear-gradient(160deg, rgba(239, 68, 68, .12), rgba(239, 68, 68, .04)); border-color: rgba(239, 68, 68, .35); }

.message-icon { font-size: 2.2rem; line-height: 1; }
.message-title { font-size: 1.2rem; font-weight: 800; margin-top: .4rem; }
.win-message .message-title { color: var(--correct-2); }
.lose-message .message-title { color: var(--danger); }
.message-subtitle { font-size: .85rem; color: var(--text-2); margin-bottom: .9rem; }

.stats-inline { display: flex; justify-content: center; gap: 2rem; margin-bottom: .9rem; }

.stat { display: flex; flex-direction: column; align-items: center; gap: .1rem; }
.stat-value { font-family: var(--mono); font-size: 1.45rem; font-weight: 700; color: var(--text); }
.stat-label { font-size: .68rem; font-weight: 600; text-transform: uppercase; letter-spacing: .07em; color: var(--text-3); }

.solution-display {
    font-size: .8rem;
    color: var(--text-2);
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    padding: .5rem .75rem;
    display: inline-block;
    margin-bottom: 1rem;
}
.solution-values { font-family: var(--mono); font-weight: 700; color: var(--brand-1); margin-left: .35rem; }

.action-buttons { display: flex; gap: .6rem; justify-content: center; flex-wrap: wrap; }

.action-btn {
    padding: .6rem 1.15rem;
    border-radius: var(--r-md);
    font-size: .83rem;
    font-weight: 700;
    color: #fff;
    transition: var(--t);
    box-shadow: var(--sh-md);
}
.action-btn.primary { background: linear-gradient(135deg, var(--correct), var(--correct-2)); }
.action-btn.secondary { background: linear-gradient(135deg, var(--brand-3), #0891b2); }
.action-btn:hover:not(:disabled) { transform: translateY(-2px); box-shadow: var(--sh-lg); }
.action-btn:disabled { opacity: .55; cursor: not-allowed; box-shadow: none; }

.timer-display {
    margin-top: .9rem;
    font-family: var(--mono);
    font-size: .75rem;
    color: var(--text-3);
}

/* =========================================================
   Legend
   ========================================================= */
.legend {
    display: grid;
    gap: .45rem;
    background: var(--sunken);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    padding: .8rem;
}
.legend-item { display: flex; align-items: center; gap: .6rem; font-size: .76rem; color: var(--text-2); }
.legend-item b { color: var(--text); font-weight: 700; margin-right: .15rem; }

.legend-color, .color-demo {
    width: 20px; height: 20px;
    border-radius: 6px;
    flex-shrink: 0;
    box-shadow: var(--sh-sm);
}
.legend-color.correct, .color-demo.correct { background: linear-gradient(140deg, var(--correct), var(--correct-2)); }
.legend-color.present, .color-demo.present { background: linear-gradient(140deg, var(--present), var(--present-2)); }
.legend-color.absent,  .color-demo.absent  { background: linear-gradient(140deg, var(--absent),  var(--absent-2)); }

/* =========================================================
   Footer
   ========================================================= */
.footer {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: .5rem;
    margin-top: 1.75rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    font-size: .75rem;
    color: var(--text-3);
}
.footer-links { display: flex; gap: 1rem; }
.footer-links a { color: var(--text-2); text-decoration: none; transition: var(--t); }
.footer-links a:hover { color: var(--brand-1); }

/* =========================================================
   Modals
   ========================================================= */
.modal-overlay {
    position: fixed; inset: 0;
    z-index: 1000;
    display: grid;
    place-items: center;
    padding: 1rem;
    background: rgba(8, 11, 24, .6);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    animation: fade .2s var(--ease);
}
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

.modal {
    width: 100%;
    max-width: 560px;
    max-height: 86dvh;
    overflow-y: auto;
    background: var(--surface-solid);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    box-shadow: var(--sh-xl);
    animation: rise .25s var(--ease) both;
    scrollbar-width: thin;
}

.modal-header {
    position: sticky; top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.1rem 1.25rem;
    background: linear-gradient(135deg, var(--brand-1), var(--brand-2));
    color: #fff;
    z-index: 1;
}
.modal-header h2 { font-size: 1.05rem; font-weight: 700; }

.close-modal {
    width: 30px; height: 30px;
    display: grid; place-items: center;
    font-size: 1.35rem;
    line-height: 1;
    color: #fff;
    background: rgba(255, 255, 255, .18);
    border-radius: 50%;
    transition: var(--t);
}
.close-modal:hover { background: rgba(255, 255, 255, .32); }

.modal-content { padding: 1.25rem; }

.instruction-card {
    background: var(--sunken);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    padding: 1rem;
    margin-bottom: 1rem;
}
.instruction-card h3 { font-size: .9rem; font-weight: 700; margin-bottom: .5rem; }
.instruction-card p { font-size: .84rem; color: var(--text-2); }
.instruction-card ul { margin: 0; padding-left: 1.1rem; }
.instruction-card li { font-size: .84rem; color: var(--text-2); margin-bottom: .35rem; }
.instruction-card .note { font-size: .76rem; color: var(--text-3); margin-top: .6rem; }

kbd {
    font-family: var(--mono);
    font-size: .75em;
    background: var(--surface-2);
    border: 1px solid var(--border-strong);
    border-bottom-width: 2px;
    border-radius: 5px;
    padding: .05em .35em;
    color: var(--text);
}

.color-guide { display: grid; gap: .45rem; margin-top: .6rem; }
.color-item {
    display: flex; align-items: center; gap: .65rem;
    font-size: .82rem; color: var(--text-2);
    background: var(--surface-solid);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    padding: .45rem .6rem;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: .5rem;
    margin-bottom: 1.25rem;
}
.stats-grid .stat {
    background: var(--sunken);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    padding: .7rem .3rem;
}

.dist-title { font-size: .8rem; font-weight: 700; margin-bottom: .6rem; }

.dist { display: grid; gap: .35rem; }
.dist-row { display: grid; grid-template-columns: 1rem 1fr; align-items: center; gap: .5rem; }
.dist-key { font-family: var(--mono); font-size: .78rem; color: var(--text-3); }
.dist-bar {
    height: 22px;
    min-width: 26px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 0 .4rem;
    border-radius: 5px;
    background: var(--absent);
    color: #fff;
    font-family: var(--mono);
    font-size: .72rem;
    font-weight: 700;
    transition: width .4s var(--ease);
}
.dist-bar.best { background: linear-gradient(90deg, var(--correct-2), var(--correct)); }

/* =========================================================
   Toasts
   ========================================================= */
.toast-host {
    position: fixed;
    left: 50%;
    bottom: max(1.25rem, env(safe-area-inset-bottom));
    transform: translateX(-50%);
    z-index: 1500;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .4rem;
    pointer-events: none;
    width: max-content;
    max-width: calc(100vw - 2rem);
}

.toast {
    padding: .6rem 1rem;
    border-radius: var(--r-md);
    background: #111827;
    color: #fff;
    font-size: .82rem;
    font-weight: 600;
    box-shadow: var(--sh-lg);
    animation: toast-in .22s var(--ease) both;
    text-align: center;
}
.toast.error { background: var(--danger); }
.toast.success { background: var(--correct-2); }
.toast.leaving { animation: toast-out .22s var(--ease) both; }

@keyframes toast-in  { from { opacity: 0; transform: translateY(12px) scale(.96); } to { opacity: 1; transform: none; } }
@keyframes toast-out { to { opacity: 0; transform: translateY(-6px) scale(.98); } }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 940px) {
    .game-grid { grid-template-columns: 1fr; }
    .graph-section { order: 1; }
    .game-section { order: 2; }
}

@media (max-width: 560px) {
    .container { padding: .85rem .75rem 2.5rem; }
    .card { padding: 1rem; border-radius: var(--r-lg); }
    .subtitle { display: none; }
    .logo-icon { font-size: 2rem; }
    .level-pill { padding: .5rem .6rem; font-size: .78rem; }
    .level-name { display: none; }
    .level-pill[aria-selected="true"] .level-name { display: inline; }
    .stats-inline { gap: 1.5rem; }
    .footer { flex-direction: column; align-items: center; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
        scroll-behavior: auto !important;
    }
}

.graph-fallback {
    display: grid;
    place-items: center;
    height: 100%;
    padding: 1rem;
    text-align: center;
    font-size: .82rem;
    color: var(--text-3);
}