@font-face {
    font-family: "Montserrat";
    src:
        url("./fonts/montserrat-latin-ext.woff2") format("woff2"),
        url("./fonts/montserrat-latin.woff2") format("woff2");
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
}

@layer tokens, base, layout, components, utilities, states, motion;

@layer tokens {
    :root {
        --font-sans:
            "Montserrat",
            system-ui,
            -apple-system,
            BlinkMacSystemFont,
            "Segoe UI",
            sans-serif;
        --font-display:
            "Iowan Old Style",
            "Palatino Linotype",
            "Book Antiqua",
            Georgia,
            serif;
        --font-mono:
            ui-monospace,
            "SFMono-Regular",
            Menlo,
            Monaco,
            Consolas,
            monospace;

        --font-size-1: 0.625rem;
        --font-size-2: 0.75rem;
        --font-size-3: 0.875rem;
        --font-size-4: 1rem;
        --font-size-5: 1.25rem;
        --font-size-6: 1.625rem;
        --font-size-7: 2.125rem;

        --line-height-tight: 1.1;
        --line-height-snug: 1.3;
        --line-height-base: 1.5;

        --space-1: 0.1875rem;
        --space-2: 0.375rem;
        --space-3: 0.5625rem;
        --space-4: 0.75rem;
        --space-5: 0.9375rem;
        --space-6: 1.125rem;
        --space-8: 1.5rem;
        --space-10: 1.875rem;
        --board-gap: var(--space-4);

        --radius-sm: 0.35rem;
        --radius-md: 0.625rem;
        --radius-lg: 0.875rem;
        --radius-pill: 999px;

        --size-control-sm: 1.875rem;
        --size-control-md: 2rem;
        --size-control-lg: 2.25rem;
        --size-touch: 34px;
        --size-tag: 1.875rem;
        --container: 34rem;
        --board-frame-pad: 0.1875rem;

        --shape-panel: polygon(
            1rem 0,
            calc(100% - 1rem) 0,
            100% 1rem,
            100% calc(100% - 1rem),
            calc(100% - 1rem) 100%,
            1rem 100%,
            0 calc(100% - 1rem),
            0 1rem
        );
        --shape-control: polygon(
            0.7rem 0,
            calc(100% - 0.7rem) 0,
            100% 0.7rem,
            100% calc(100% - 0.7rem),
            calc(100% - 0.7rem) 100%,
            0.7rem 100%,
            0 calc(100% - 0.7rem),
            0 0.7rem
        );
        --shape-tag: polygon(
            0.55rem 0,
            calc(100% - 0.55rem) 0,
            100% 0.55rem,
            100% calc(100% - 0.55rem),
            calc(100% - 0.55rem) 100%,
            0.55rem 100%,
            0 calc(100% - 0.55rem),
            0 0.55rem
        );
        --shape-edge-top: polygon(
            0 0,
            100% 0,
            100% calc(100% - 1.15rem),
            calc(100% - 1.15rem) 100%,
            1.15rem 100%,
            0 calc(100% - 1.15rem)
        );
        --shape-edge-bottom: polygon(
            1.15rem 0,
            calc(100% - 1.15rem) 0,
            100% 1.15rem,
            100% 100%,
            0 100%,
            0 1.15rem
        );

        --transition-fast: 150ms ease;
        --transition-base: 240ms ease;

    }

    :root,
    html[data-theme="cosmere-dark"] {
        color-scheme: dark;

        --bg: #081527;
        --bg-top: #10213a;
        --bg-bottom: #040b17;
        --surface-1: #12213a;
        --surface-2: #1a2d4a;
        --surface-3: #233a5a;
        --surface-inset: #0f1c33;
        --surface-overlay: rgb(4 12 24 / 0.78);
        --surface-highlight: rgb(255 255 255 / 0.06);
        --surface-highlight-strong: rgb(255 255 255 / 0.1);
        --surface-lowlight: rgb(0 0 0 / 0.22);

        --text: #eef4ff;
        --text-soft: #d4e1f4;
        --text-muted: #a8bad4;
        --text-inverse: #081325;

        --border: #415a7f;
        --border-strong: #5a77a3;

        --accent-primary: #4d8bff;
        --accent-primary-strong: #75a8ff;
        --accent-primary-soft: #152846;
        --accent-secondary: #e0b94d;
        --accent-secondary-strong: #ffd56f;
        --accent-secondary-soft: #31250a;
        --danger: #ff6a85;
        --danger-strong: #ff87a0;
        --danger-soft: #3a1020;
        --success: #6ef0ae;
        --success-soft: #102e22;

        --status-perfect: #5ee58d;
        --status-hint-world: #f4d15c;
        --status-hint-category: #ff9f43;
        --status-skipped: #ff4f6d;
        --status-pending: #364a68;

        --focus: rgb(77 139 255 / 0.4);
        --shadow-sm: 0 12px 26px rgb(1 6 14 / 0.24);
        --shadow-md: 0 22px 48px rgb(1 6 14 / 0.34);
        --shadow-lg: 0 30px 64px rgb(1 6 14 / 0.42);

        --ornament-line: rgb(224 185 77 / 0.46);
        --ornament-line-soft: rgb(224 185 77 / 0.2);
        --grid-line: rgb(224 185 77 / 0.04);
        --grid-dot: rgb(77 139 255 / 0.06);
        --aura-primary: rgb(77 139 255 / 0.22);
        --aura-secondary: rgb(224 185 77 / 0.16);
        --star-soft: rgb(182 220 255 / 0.16);
        --star-bright: rgb(255 244 214 / 0.24);
    }

}

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

    html,
    body,
    #app {
        min-height: 100%;
    }

    html,
    body {
        height: 100%;
        overflow: hidden;
        overscroll-behavior: none;
    }

    #app {
        height: 100dvh;
        min-height: 100dvh;
    }

    html {
        background: var(--bg);
        touch-action: manipulation;
    }

    body {
        margin: 0;
        position: relative;
        color: var(--text);
        background:
            radial-gradient(
                circle at 50% -12%,
                rgb(255 255 255 / 0.06),
                transparent 38%
            ),
            linear-gradient(
                180deg,
                color-mix(in srgb, var(--bg-top) 28%, transparent) 0%,
                color-mix(in srgb, var(--bg) 34%, transparent) 34%,
                color-mix(in srgb, var(--bg-bottom) 48%, transparent) 100%
            ),
            url("./assets/background.jpg") center / cover no-repeat fixed,
            linear-gradient(180deg, var(--bg-top), var(--bg) 36%, var(--bg-bottom));
        font-family: var(--font-sans);
        font-size: var(--font-size-3);
        line-height: var(--line-height-base);
        text-rendering: optimizeLegibility;
        -webkit-font-smoothing: antialiased;
        font-synthesis: none;
        overflow-x: hidden;
        overscroll-behavior: none;
    }

    body::before,
    body::after {
        content: "";
        position: fixed;
        inset: 0;
        pointer-events: none;
        z-index: -1;
    }

    body::before {
        display: none;
    }

    body::after {
        background:
            radial-gradient(circle at 14% 12%, var(--aura-primary), transparent 26%),
            radial-gradient(circle at 84% 18%, var(--aura-secondary), transparent 24%);
        opacity: 0.45;
    }

    img,
    svg,
    canvas {
        display: block;
        max-width: 100%;
    }

    button,
    input,
    select,
    textarea {
        font: inherit;
        color: inherit;
    }

    button {
        cursor: pointer;
        touch-action: manipulation;
    }

    button:disabled,
    input:disabled,
    select:disabled,
    textarea:disabled {
        cursor: not-allowed;
        opacity: 0.55;
    }

    h1,
    h2,
    h3,
    p,
    ul {
        margin: 0;
    }

    a {
        color: inherit;
    }

    ::selection {
        color: var(--text-inverse);
        background: var(--accent-primary);
    }

    button:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible,
    [role="dialog"]:focus-visible {
        outline: none;
        box-shadow:
            0 0 0 1px var(--bg),
            0 0 0 4px var(--focus);
    }
}

@layer layout {
    .fluid-cursor-layer {
        position: fixed;
        inset: 0;
        z-index: 0;
        pointer-events: none;
        overflow: hidden;
    }

    .fluid-cursor-canvas {
        width: 100%;
        height: 100%;
        opacity: 0.7;
    }

    .app {
        --play-width: min(
            calc(100vw - var(--space-8)),
            clamp(16rem, calc(100dvh - 18rem), var(--container))
        );
        --chrome-width: min(
            calc(100vw - var(--space-6)),
            calc(var(--play-width) + (var(--space-10) * 2))
        );
        width: 100%;
        min-height: 100dvh;
        margin: 0;
        padding: 0;
        position: relative;
        z-index: 1;
        display: grid;
        grid-template-rows: auto minmax(0, 1fr);
        gap: 0;
        overflow: hidden;
    }

    .playground,
    .stack,
    .top-copy,
    .field,
    .game-card,
    .bottom-panel,
    .round-dialog {
        display: grid;
        gap: var(--space-4);
    }

    .game-card,
    .field {
        align-content: start;
    }

    .playground {
        width: 100%;
        min-height: 0;
        grid-template-rows: minmax(0, 1fr) auto;
        align-content: stretch;
        gap: 0;
    }

    .stack--dense {
        gap: var(--space-1);
    }

    .cluster,
    .toolbar,
    .toolbar-actions,
    .hints,
    .dialog-tags,
    .summary-stats {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: var(--space-2);
    }

    .toolbar {
        justify-content: space-between;
        gap: var(--space-3);
    }

    .top .toolbar {
        align-items: center;
    }

    .toolbar--compact {
        align-items: flex-start;
    }

    .toolbar-actions {
        justify-content: flex-end;
    }

    .hints {
        justify-content: center;
    }

    .game-card {
        width: var(--play-width);
        align-self: center;
        justify-self: center;
        justify-items: stretch;
    }

    .bottom-panel {
        width: var(--chrome-width);
        align-self: end;
        justify-self: center;
    }

    .row {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: var(--space-3);
    }

    .word-row {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto;
        gap: var(--space-4);
        align-items: stretch;
    }

    .actions {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: var(--space-4);
        align-items: start;
    }

    .field + .actions {
        margin-top: 0;
    }

    .board-wrap {
        position: relative;
        padding: var(--board-frame-pad);
        touch-action: none;
        user-select: none;
        -webkit-user-select: none;
    }

    .board-lines {
        position: absolute;
        inset: var(--board-frame-pad);
        width: calc(100% - (var(--board-frame-pad) * 2));
        height: calc(100% - (var(--board-frame-pad) * 2));
        pointer-events: none;
        z-index: 0;
    }

    .board {
        position: relative;
        z-index: 1;
        display: grid;
        grid-template-columns: repeat(var(--board-cols), 1fr);
        gap: var(--board-gap);
        touch-action: none;
    }

    .orientation-guard {
        display: none;
    }

    .dialog-backdrop {
        position: fixed;
        inset: 0;
        z-index: 30;
        display: grid;
        place-items: center;
        padding: var(--space-4);
        background:
            linear-gradient(180deg, rgb(4 10 20 / 0.46), var(--surface-overlay)),
            radial-gradient(circle at top, var(--aura-primary), transparent 34%);
        backdrop-filter: blur(8px);
    }

    @media (min-width: 640px) {
        .board {
            gap: var(--board-gap);
        }
    }

    @media (max-width: 420px) {
        .app {
            --chrome-width: min(
                calc(100vw - var(--space-4)),
                calc(var(--play-width) + var(--space-6))
            );
        }

        .playground,
        .game-card,
        .bottom-panel,
        .round-dialog {
            gap: var(--space-4);
        }

        .field {
            gap: var(--space-3);
        }

        .toolbar {
            align-items: flex-start;
        }

        .toolbar--compact {
            gap: var(--space-2);
            align-items: flex-start;
        }

        .toolbar--compact .stack {
            min-width: 0;
            flex: 1 1 auto;
        }

        .toolbar--compact .round-status {
            flex: 0 0 auto;
        }

        .top {
            gap: var(--space-4);
        }

        .top h1 {
            font-size: clamp(1.5rem, 5vw, 1.85rem);
        }

        .top-date {
            font-size: var(--font-size-2);
        }

        .ornament-line {
            gap: var(--space-2);
            margin-top: var(--space-1);
        }

        .board {
            gap: var(--space-1);
        }

        .tile {
            font-size: clamp(0.95rem, 4.4vw, 1.2rem);
        }

        .hints {
            gap: var(--space-1);
        }

        .tag,
        .hint-pill {
            padding: 0.16rem 0.45rem;
            font-size: 0.6875rem;
        }

        .selected-word,
        .dialog-description {
            min-height: 1.75rem;
            padding: 0.24rem 0.48rem;
        }

        .selected-word {
            font-size: var(--font-size-3);
            padding-inline-start: 0.72rem;
        }

        .field + .actions {
            margin-top: 0;
        }

        .segmented-control,
        .round-status {
            gap: 0.35rem;
            padding: 0.28rem 0.45rem;
        }

        .round-status__item {
            width: 0.56rem;
            height: 0.56rem;
        }
    }

    @media (prefers-reduced-motion: reduce) {
        .fluid-cursor-layer {
            display: none;
        }
    }

    @media (orientation: landscape) and (max-height: 560px),
        (orientation: landscape) and (pointer: coarse) and (max-width: 1024px) {
        .fluid-cursor-layer {
            display: none;
        }

        .app {
            grid-template-rows: 1fr;
            place-items: center;
            padding: max(var(--space-5), env(safe-area-inset-top))
                max(var(--space-5), env(safe-area-inset-right))
                max(var(--space-5), env(safe-area-inset-bottom))
                max(var(--space-5), env(safe-area-inset-left));
        }

        .app > :not(.orientation-guard) {
            display: none;
        }

        .orientation-guard {
            width: min(100%, 28rem);
            min-height: 10rem;
            display: grid;
            place-items: center;
            align-content: center;
            gap: var(--space-4);
            text-align: center;
        }
    }
}

@layer components {
    .card,
    .surface--frame,
    .surface--ornate,
    .chrome-panel,
    .button,
    .tile {
        position: relative;
        overflow: hidden;
        isolation: isolate;
    }

    .surface--frame,
    .surface--ornate,
    .round-dialog,
    .board-frame {
        clip-path: var(--shape-panel);
        border: 1px solid var(--border);
        background: linear-gradient(180deg, var(--surface-1), var(--surface-2));
        box-shadow:
            inset 0 1px 0 var(--surface-highlight),
            var(--shadow-md);
    }

    .round-dialog {
        padding: var(--space-4);
    }

    .surface--ornate,
    .round-dialog {
        box-shadow:
            inset 0 1px 0 var(--surface-highlight-strong),
            var(--shadow-lg);
    }

    .surface--ornate::before,
    .chrome-panel::before,
    .round-dialog::before {
        content: "";
        position: absolute;
        inset: 1px;
        clip-path: inherit;
        border: 1px solid var(--ornament-line-soft);
        pointer-events: none;
    }

    .surface--ornate::after,
    .chrome-panel::after,
    .round-dialog::after {
        content: "";
        position: absolute;
        inset: 0;
        background:
            linear-gradient(90deg, transparent, var(--ornament-line), transparent),
            linear-gradient(0deg, transparent, var(--ornament-line-soft), transparent);
        background-size:
            100% 1px,
            1px 100%;
        background-position:
            top,
            right;
        background-repeat: no-repeat;
        pointer-events: none;
        opacity: 0.8;
    }

    .surface--inset,
    .panel {
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        background: linear-gradient(180deg, var(--surface-inset), var(--surface-1));
        box-shadow:
            inset 0 1px 0 var(--surface-highlight),
            inset 0 -1px 0 var(--surface-lowlight);
    }

    .surface--frame {
        box-shadow:
            inset 0 1px 0 var(--surface-highlight),
            var(--shadow-md);
    }

    .board-frame {
        background: none;
        box-shadow: none;
    }

    .chrome-panel {
        padding: var(--space-5);
        border: 1px solid var(--border);
        background:
            linear-gradient(180deg, var(--surface-highlight-strong), transparent 34%),
            linear-gradient(180deg, var(--surface-1), var(--surface-2));
        box-shadow:
            inset 0 1px 0 var(--surface-highlight),
            var(--shadow-md);
    }

    .top {
        width: var(--chrome-width);
        justify-self: center;
        padding-top: max(var(--space-5), env(safe-area-inset-top));
        clip-path: var(--shape-edge-top);
        gap: var(--space-4);
    }

    .top-progress {
        margin-top: var(--space-3);
    }

    .bottom-panel {
        padding-bottom: max(var(--space-5), env(safe-area-inset-bottom));
        clip-path: var(--shape-edge-bottom);
        background:
            linear-gradient(180deg, var(--surface-2), var(--surface-1));
        justify-items: center;
    }

    .bottom-panel > .hints,
    .bottom-panel > .field,
    .bottom-panel > .actions {
        width: min(100%, var(--container));
    }

    .top-copy {
        gap: var(--space-1);
        align-content: start;
    }

    .top .toolbar-actions {
        align-self: flex-start;
    }

    .game-card {
        padding: 0;
    }

    .board-frame {
        border: none;
    }

    .top h1,
    .round-dialog h2 {
        font-family: var(--font-display);
        line-height: var(--line-height-tight);
        letter-spacing: 0.02em;
        text-wrap: balance;
    }

    .top h1 {
        font-size: clamp(1.7rem, 6vw, var(--font-size-7));
        font-weight: 700;
    }

    .round-dialog h2 {
        font-size: clamp(1.45rem, 4vw, 1.95rem);
    }

    .section-title,
    .dialog-label,
    .top-date,
    .field-label,
    .field-hint {
        font-size: var(--font-size-4);
        line-height: var(--line-height-snug);
    }

    .section-title,
    .dialog-label {
        color: var(--accent-secondary);
        font-weight: 700;
        letter-spacing: 0.16em;
        text-transform: uppercase;
    }

    .dialog-label--danger {
        color: var(--danger);
    }

    .dialog-label--success {
        color: var(--accent-secondary);
    }

    .top-date,
    .field-hint,
    .text-muted {
        color: var(--text-muted);
    }

    .top-date {
        line-height: 1.2;
    }

    .field-label {
        color: var(--text-soft);
        font-weight: 600;
    }

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

    .ornament-line {
        display: grid;
        grid-template-columns: 1fr auto 1fr;
        align-items: center;
        gap: var(--space-3);
        margin-top: var(--space-2);
        color: var(--accent-secondary);
    }

    .ornament-line::before,
    .ornament-line::after {
        content: "";
        height: 1px;
        background: linear-gradient(90deg, transparent, var(--ornament-line), transparent);
    }

    .ornament-line span {
        width: 0.55rem;
        height: 0.55rem;
        display: block;
        background: var(--accent-secondary);
        transform: rotate(45deg);
        box-shadow: 0 0 0 1px var(--ornament-line-soft);
    }

    .tag,
    .hint-pill {
        min-height: calc(var(--size-tag) - 0.35rem);
        padding: 0.2rem 0.55rem;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border: 1px solid color-mix(in srgb, var(--border) 85%, transparent);
        border-radius: var(--radius-pill);
        background: color-mix(in srgb, var(--surface-2) 78%, transparent);
        color: var(--text-muted);
        font-size: 0.75rem;
        font-weight: 600;
        letter-spacing: 0.03em;
        max-width: 100%;
        line-height: 1.25;
        text-align: center;
        box-shadow: none;
    }

    .tag--meta {
        border-color: color-mix(in srgb, var(--accent-secondary) 34%, var(--border));
        color: var(--accent-secondary-strong);
        background: color-mix(in srgb, var(--accent-secondary-soft) 72%, var(--surface-1));
    }

    .tag--active {
        border-color: color-mix(in srgb, var(--accent-primary) 30%, var(--border));
        color: var(--text);
        background: color-mix(in srgb, var(--accent-primary-soft) 68%, var(--surface-1));
    }

    .tag--danger {
        border-color: color-mix(in srgb, var(--danger) 32%, var(--border));
        color: var(--danger);
        background: color-mix(in srgb, var(--danger-soft) 74%, var(--surface-1));
    }

    .hint-toast {
        position: fixed;
        left: 50%;
        bottom: calc(max(var(--space-6), env(safe-area-inset-bottom)) + 8.75rem);
        z-index: 40;
        width: min(calc(100vw - var(--space-8)), var(--container));
        min-height: var(--size-control-lg);
        padding: 0.66rem 0.95rem;
        display: flex;
        align-items: center;
        justify-content: center;
        border: 1px solid color-mix(in srgb, var(--accent-secondary) 46%, var(--border));
        border-radius: var(--radius-pill);
        background:
            linear-gradient(180deg, var(--surface-highlight-strong), transparent 52%),
            linear-gradient(180deg, color-mix(in srgb, var(--surface-2) 86%, var(--surface-overlay)), var(--surface-1));
        color: var(--text);
        font-size: var(--font-size-3);
        font-weight: 700;
        line-height: var(--line-height-snug);
        text-align: center;
        box-shadow:
            inset 0 1px 0 var(--surface-highlight),
            0 0 0 1px color-mix(in srgb, var(--accent-secondary) 12%, transparent),
            var(--shadow-md);
        opacity: 0;
        pointer-events: none;
        transform: translate(-50%, 0.75rem) scale(0.98);
        transition:
            opacity var(--transition-base),
            transform var(--transition-base);
    }

    .hint-toast.is-visible {
        opacity: 1;
        transform: translate(-50%, 0) scale(1);
    }

    .hint-toast--error {
        border-color: color-mix(in srgb, var(--danger) 54%, var(--border));
        background:
            linear-gradient(180deg, rgb(255 255 255 / 0.12), transparent 52%),
            linear-gradient(180deg, color-mix(in srgb, var(--danger-soft) 72%, var(--surface-2)), var(--surface-1));
        color: var(--danger-strong);
        box-shadow:
            inset 0 1px 0 var(--surface-highlight),
            0 0 0 1px color-mix(in srgb, var(--danger) 18%, transparent),
            0 0 22px color-mix(in srgb, var(--danger) 22%, transparent),
            var(--shadow-md);
    }

    .button {
        min-height: var(--size-control-md);
        padding: 0.34rem 0.58rem;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: var(--space-2);
        border: 1px solid var(--border-strong);
        border-radius: 0.8rem;
        background: linear-gradient(180deg, var(--surface-2), var(--surface-3));
        color: var(--text);
        font-size: var(--font-size-2);
        font-weight: 700;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        box-shadow: none;
        transition:
            transform var(--transition-fast),
            border-color var(--transition-base),
            background var(--transition-base),
            color var(--transition-base),
            filter var(--transition-base);
    }

    .button > * {
        position: relative;
        z-index: 1;
    }

    .button::after {
        content: "";
        position: absolute;
        inset: 0;
        z-index: 0;
        pointer-events: none;
        opacity: 0;
        transform: scale(0.98);
        transition:
            opacity var(--transition-base),
            transform var(--transition-base);
        background:
            linear-gradient(180deg, rgb(255 255 255 / 0.11), transparent 58%),
            linear-gradient(135deg, rgb(255 255 255 / 0.04), transparent 62%);
    }

    .button--primary {
        border-color: var(--accent-primary);
        background: linear-gradient(180deg, var(--accent-primary-strong), var(--accent-primary));
        color: var(--text-inverse);
        box-shadow: none;
    }

    .button--secondary {
        border-color: var(--accent-secondary);
        background: linear-gradient(180deg, var(--accent-secondary-strong), var(--accent-secondary));
        box-shadow: none;
        color: var(--text-inverse);
    }

    .button--ghost {
        border-color: var(--border);
        background: linear-gradient(180deg, rgb(255 255 255 / 0.02), transparent);
        color: var(--text-soft);
        box-shadow: none;
    }

    .button--danger {
        border-color: var(--danger);
        background: linear-gradient(180deg, var(--danger-strong), var(--danger));
        box-shadow: none;
        color: var(--text-inverse);
    }

    .button--lg {
        min-height: var(--size-control-lg);
        padding-inline: 0.82rem;
    }

    .button:active:not(:disabled),
    .icon-button:active:not(:disabled) {
        transform: translateY(1px) scale(0.985);
        filter: brightness(0.96) saturate(0.98);
    }

    .icon-button {
        width: var(--size-touch);
        min-width: var(--size-touch);
        border-radius: 0.8rem;
        padding-inline: 0;
    }

    .clear-button {
        width: 3.1875rem;
        height: 3.1875rem;
        min-width: 3.1875rem;
        min-height: 3.1875rem;
        aspect-ratio: 1;
        padding: 0;
        border-color: color-mix(in srgb, var(--danger) 55%, var(--border));
        border-radius: var(--radius-sm);
        background:
            linear-gradient(180deg, color-mix(in srgb, var(--danger) 22%, var(--surface-2)), color-mix(in srgb, var(--danger) 12%, var(--surface-3)));
        box-shadow: none;
        color: var(--danger);
        flex-shrink: 0;
    }

    .app-icon {
        flex: none;
    }

    .selected-word,
    .dialog-description {
        min-height: var(--size-control-sm);
        padding: 0.32rem 0.56rem;
        display: flex;
        align-items: center;
        color: var(--text);
    }

    .selected-word {
        min-height: 3.1875rem;
        overflow: hidden;
        font-size: var(--font-size-4);
        padding-inline-start: 0.9rem;
        font-weight: 700;
        letter-spacing: 0.06em;
        text-transform: uppercase;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .selected-word--empty {
        color: var(--text-muted);
        opacity: 0.58;
    }

    .selected-word.is-invalid-attempt {
        border-color: color-mix(in srgb, var(--danger) 62%, var(--border));
        color: var(--danger-strong);
        animation: invalidAttemptShake 420ms cubic-bezier(0.36, 0.07, 0.19, 0.97);
    }

    .dialog-description {
        min-height: 0;
        padding: 0;
        display: block;
        color: var(--text-soft);
        line-height: var(--line-height-base);
        font-style: italic;
        text-align: center;
        max-width: 32ch;
    }

    .tile {
        aspect-ratio: 1;
        padding: 0;
        touch-action: none;
        clip-path: var(--shape-control);
        border: 1px solid var(--border-strong);
        background:
            linear-gradient(180deg, var(--surface-highlight-strong), transparent 30%),
            linear-gradient(180deg, var(--surface-1), var(--surface-2) 52%, var(--surface-3));
        color: var(--text);
        font-family: var(--font-display);
        font-size: clamp(1.05rem, 5vw, 1.45rem);
        font-weight: 700;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        box-shadow:
            inset 0 1px 0 var(--surface-highlight),
            inset 0 -1px 0 var(--surface-lowlight),
            var(--shadow-sm);
        transition:
            transform var(--transition-fast),
            border-color var(--transition-base),
            background var(--transition-base),
            color var(--transition-base),
            box-shadow var(--transition-base),
            filter var(--transition-base);
    }

    .tile::after {
        content: "";
        position: absolute;
        inset: 0;
        z-index: 0;
        pointer-events: none;
        opacity: 0;
        transform: scale(0.985);
        transition:
            opacity var(--transition-base),
            transform var(--transition-base);
        background:
            radial-gradient(circle at 50% 16%, rgb(117 168 255 / 0.16), transparent 42%),
            linear-gradient(180deg, rgb(255 255 255 / 0.06), transparent 58%);
    }

    .tile__label {
        position: relative;
        z-index: 1;
        display: inline-block;
        transition:
            opacity var(--transition-base),
            transform var(--transition-base);
    }

    .tile.selected,
    .tile:active {
        border-color: var(--accent-primary-strong);
        background:
            linear-gradient(180deg, rgb(255 255 255 / 0.18), rgb(255 255 255 / 0.04) 32%, transparent 56%),
            linear-gradient(180deg, var(--accent-primary-strong), var(--accent-primary) 52%, #2d63d6);
        color: var(--text-inverse);
        box-shadow:
            inset 0 1px 0 rgb(255 255 255 / 0.22),
            0 0 0 1px color-mix(in srgb, var(--accent-primary-strong) 55%, transparent),
            0 0 22px rgb(77 139 255 / 0.32),
            var(--shadow-md);
    }

    .tile.selected::after,
    .tile:active::after {
        opacity: 0.9;
        transform: scale(1);
    }

    .board.is-invalid-attempt .tile.selected {
        border-color: var(--danger-strong);
        background:
            linear-gradient(180deg, rgb(255 255 255 / 0.18), rgb(255 255 255 / 0.04) 32%, transparent 56%),
            linear-gradient(180deg, var(--danger-strong), var(--danger) 56%, #b72746);
        box-shadow:
            inset 0 1px 0 rgb(255 255 255 / 0.24),
            0 0 0 1px color-mix(in srgb, var(--danger-strong) 55%, transparent),
            0 0 22px color-mix(in srgb, var(--danger) 36%, transparent),
            var(--shadow-md);
        animation: invalidAttemptShake 420ms cubic-bezier(0.36, 0.07, 0.19, 0.97);
    }

    .board-lines line {
        stroke: var(--accent-primary);
        stroke-width: 6;
        stroke-linecap: round;
        stroke-opacity: 0.82;
    }

    .segmented-control,
    .round-status {
        display: inline-flex;
        align-items: center;
        gap: 0.45rem;
        min-height: var(--size-control-sm);
        padding: 0.35rem 0.55rem;
        border: 1px solid var(--border);
        border-radius: var(--radius-pill);
        background: color-mix(in srgb, var(--surface-inset) 88%, transparent);
        box-shadow: none;
    }

    .round-status__item {
        width: 0.62rem;
        height: 0.62rem;
        display: block;
        clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
        border: 1px solid var(--border-strong);
        background: var(--status-pending);
    }

    .round-status__item.is-perfect {
        border-color: var(--status-perfect);
        background: var(--status-perfect);
    }

    .round-status__item.is-hint-world {
        border-color: var(--status-hint-world);
        background: var(--status-hint-world);
    }

    .round-status__item.is-hint-category {
        border-color: var(--status-hint-category);
        background: var(--status-hint-category);
    }

    .round-status__item.is-skipped {
        border-color: var(--status-skipped);
        background: var(--status-skipped);
    }

    .round-status__item.is-pending {
        background: var(--status-pending);
    }

    .divider {
        height: 1px;
        border: 0;
        background: var(--border);
    }

    .divider--ornament {
        position: relative;
        width: 100%;
        max-width: 18rem;
        height: 1rem;
        background: none;
    }

    .divider--ornament::before {
        content: "";
        position: absolute;
        inset: 50% 0 auto;
        height: 1px;
        transform: translateY(-50%);
        background: linear-gradient(90deg, transparent, var(--ornament-line), transparent);
    }

    .divider--ornament::after {
        content: "";
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0.65rem;
        height: 0.65rem;
        transform: translate(-50%, -50%) rotate(45deg);
        background: var(--accent-secondary);
        box-shadow: 0 0 0 1px var(--ornament-line-soft);
    }

    .summary-dialog__score,
    .summary-dialog__message {
        color: var(--text-muted);
        max-width: 32ch;
    }

    .summary-dialog__message {
        color: var(--text-soft);
    }

    .round-dialog {
        width: min(100%, 32rem);
        padding: var(--space-6) var(--space-5);
        justify-items: center;
        text-align: center;
    }

    .round-dialog .dialog-tags {
        justify-content: center;
    }

    .summary-dialog .summary-stats,
    .summary-dialog .actions {
        justify-content: center;
    }

    .round-dialog:not(.summary-dialog) .action-primary {
        width: min(100%, 15rem);
        margin-top: var(--space-3);
    }

    .summary-dialog .actions {
        width: min(100%, 24rem);
        grid-template-columns: minmax(0, 15rem);
    }

    .summary-dialog .button {
        width: 100%;
    }

    .actions .button {
        min-height: 3.1875rem;
    }

    @media (max-width: 420px) {
        .button {
            padding: 0.34rem 0.58rem;
            border-radius: var(--radius-md);
            font-size: var(--font-size-1);
            line-height: 1.1;
        }

        .clear-button {
            width: 3.1875rem;
            height: 3.1875rem;
            min-width: 3.1875rem;
            min-height: 3.1875rem;
        }

        .hint-toast {
            bottom: calc(max(var(--space-5), env(safe-area-inset-bottom)) + 9.75rem);
            width: calc(100vw - var(--space-6));
            padding: 0.58rem 0.78rem;
            font-size: var(--font-size-2);
        }

        .selected-word,
        .dialog-description {
            min-height: 3.1875rem;
            padding: 0.34rem 0.58rem;
        }
    }

}

@layer utilities {
    .text-soft {
        color: var(--text-soft);
    }

    .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;
    }
}

@layer states {
    @media (hover: hover) {
        .button:hover:not(:disabled),
        .icon-button:hover:not(:disabled) {
            transform: translateY(-1px);
        }

        .tile:hover:not(:disabled) {
            transform: translateY(-2px) scale(1.015);
        }

        .button:hover:active:not(:disabled),
        .icon-button:hover:active:not(:disabled) {
            transform: translateY(1px) scale(0.982);
            filter: brightness(0.94) saturate(0.96);
        }

        .button:hover:not(:disabled)::after {
            opacity: 1;
            transform: scale(1);
        }

        .button:hover:active:not(:disabled)::after,
        .icon-button:hover:active:not(:disabled)::after {
            opacity: 0.72;
            transform: scale(0.995);
        }

        .button:hover:not(:disabled),
        .tile:hover:not(:disabled),
        .icon-button:hover:not(:disabled) {
            border-color: var(--accent-primary);
            filter: brightness(1.03);
        }

        .button--primary:hover:not(:disabled) {
            background: linear-gradient(180deg, var(--accent-primary-strong), var(--accent-primary-strong));
        }

        .button--secondary:hover:not(:disabled) {
            color: var(--text-inverse);
            border-color: var(--accent-secondary-strong);
            background: linear-gradient(180deg, var(--accent-secondary-strong), var(--accent-secondary-strong));
        }

        .button--ghost:hover:not(:disabled) {
            color: var(--accent-primary-strong);
            background: linear-gradient(180deg, rgb(255 255 255 / 0.04), transparent);
        }

        .button--danger:hover:not(:disabled) {
            border-color: var(--danger);
            color: var(--text-inverse);
            background: linear-gradient(180deg, var(--danger-strong), var(--danger-strong));
        }

        .clear-button:hover:not(:disabled) {
            border-color: var(--danger);
            background:
                linear-gradient(180deg, color-mix(in srgb, var(--danger) 30%, var(--surface-2)), color-mix(in srgb, var(--danger) 18%, var(--surface-3)));
            color: var(--danger-strong);
        }

        .tile:hover:not(.selected):not(:disabled) {
            border-color: var(--accent-primary-strong);
            background:
                linear-gradient(180deg, rgb(255 255 255 / 0.12), rgb(255 255 255 / 0.03) 34%, transparent 58%),
                linear-gradient(
                    180deg,
                    color-mix(in srgb, var(--accent-primary) 34%, var(--surface-1)),
                    color-mix(in srgb, var(--accent-primary) 18%, var(--surface-2)) 54%,
                    var(--surface-3)
                );
            color: var(--text-soft);
            box-shadow:
                inset 0 1px 0 rgb(255 255 255 / 0.16),
                0 0 0 1px color-mix(in srgb, var(--accent-primary) 36%, transparent),
                0 10px 24px rgb(2 10 22 / 0.3),
                0 0 16px rgb(77 139 255 / 0.16);
            filter: brightness(1.08) saturate(1.08);
        }

        .tile:hover:not(.selected):not(:disabled)::after {
            opacity: 1;
            transform: scale(1.02);
        }

        .tile:hover:not(.selected):not(:disabled) .tile__label {
            opacity: 1;
            transform: translateY(-2px);
        }
    }
}

@layer motion {
    @keyframes invalidAttemptShake {
        0%,
        100% {
            transform: translateX(0);
        }

        18%,
        54% {
            transform: translateX(-0.28rem);
        }

        36%,
        72% {
            transform: translateX(0.28rem);
        }
    }

    @keyframes starfieldPulse {
        from {
            opacity: 0.84;
            filter: saturate(0.92) brightness(0.92);
        }

        to {
            opacity: 0.94;
            filter: saturate(1.02) brightness(1.01);
        }
    }

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