@property --shade {
    syntax: "<color>";
    inherits: true;
    initial-value: #3b5bdb;
}

@property --ink {
    syntax: "<color>";
    inherits: true;
    initial-value: #ffffff;
}

:root {
    --bg: #f5f6fa;
    --surface: #ffffff;
    --text: #0b1020;
    --muted: #5b6478;
    --border: rgb(15 23 42 / 0.09);
    --shadow: 0 1px 2px rgb(15 23 42 / 0.06), 0 8px 24px -12px rgb(15 23 42 / 0.18);
    --danger: #c92a2a;
    --radius-lg: 28px;
    --radius: 16px;
    --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
    --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;

    color-scheme: light dark;
    transition: --shade 0.45s var(--ease), --ink 0.45s var(--ease);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #090c13;
        --surface: #121726;
        --text: #eef1f8;
        --muted: #98a1b6;
        --border: rgb(255 255 255 / 0.08);
        --shadow: 0 1px 2px rgb(0 0 0 / 0.4), 0 12px 32px -16px rgb(0 0 0 / 0.6);
        --danger: #ff8787;
    }
}

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

html,
body {
    margin: 0;
}

body {
    min-height: 100svh;
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.5;
    color: var(--text);
    background:
        radial-gradient(120% 60% at 50% -10%, color-mix(in oklab, var(--shade) 22%, transparent), transparent 70%),
        var(--bg);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
    -webkit-tap-highlight-color: transparent;
}

button {
    font: inherit;
    color: inherit;
    background: none;
    border: 0;
    padding: 0;
    cursor: pointer;
}

:focus-visible {
    outline: 2px solid var(--text);
    outline-offset: 3px;
    border-radius: 8px;
}

kbd {
    font-family: var(--mono);
    font-size: 0.75em;
    padding: 0.1em 0.45em;
    border-radius: 6px;
    border: 1px solid currentColor;
    opacity: 0.45;
}

@media (pointer: coarse) {
    kbd {
        display: none;
    }
}

@media (pointer: fine) {
    .hint-touch {
        display: none;
    }
}

/* Layout */

.app {
    width: min(100%, 34rem);
    margin: 0 auto;
    padding:
        max(12px, env(safe-area-inset-top)) 16px
        max(24px, env(safe-area-inset-bottom));
    display: flex;
    flex-direction: column;
    gap: 28px;
    min-height: 100svh;
}

main {
    display: flex;
    flex-direction: column;
    gap: 28px;
    flex: 1;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 44px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 650;
    letter-spacing: -0.01em;
    color: inherit;
    text-decoration: none;
}

.brand-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--shade);
    box-shadow: 0 0 0 3px color-mix(in oklab, var(--shade) 25%, transparent);
}

.ghost {
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 550;
    color: var(--muted);
    transition: background-color 0.15s, color 0.15s;
}

.ghost:hover {
    background: var(--border);
    color: var(--text);
}

/* Stage */

.stage {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.prompt {
    margin: 0;
    font-size: clamp(1.6rem, 6vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
    text-wrap: balance;
}

.prompt span {
    color: color-mix(in oklab, var(--shade) 80%, var(--text));
}

.card {
    position: relative;
}

.swatch {
    position: relative;
    margin: 0;
    aspect-ratio: 5 / 4;
    max-height: 52svh;
    width: 100%;
    border-radius: var(--radius-lg);
    background: var(--shade);
    color: var(--ink);
    box-shadow:
        0 1px 0 rgb(255 255 255 / 0.12) inset,
        0 28px 56px -24px color-mix(in oklab, var(--shade) 70%, transparent);
    display: flex;
    align-items: flex-end;
    padding: 20px;
    touch-action: pan-y;
    user-select: none;
    animation: swatch-in 0.32s var(--ease);
    transition: transform 0.3s var(--ease);
}

.swatch.dragging {
    transition: none;
    cursor: grabbing;
}

@keyframes swatch-in {
    from {
        transform: scale(0.97);
        opacity: 0.6;
    }
}

.swatch-caption {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    min-width: 0;
}

.chip.hex {
    font-family: var(--mono);
    font-size: clamp(1.4rem, 6vw, 1.75rem);
    font-weight: 600;
    letter-spacing: 0.02em;
    padding: 2px 10px;
    margin-left: -10px;
    border-radius: 10px;
    transition: background-color 0.15s;
}

.chip.hex:hover {
    background: color-mix(in srgb, var(--ink) 14%, transparent);
}

.shade-name {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 10px;
    font-size: 0.95rem;
}

.name {
    text-align: left;
    border-radius: 6px;
}

.name:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}

.name.subtle {
    opacity: 0.7;
}

.swatch-intent {
    position: absolute;
    top: 20px;
    padding: 6px 14px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.875rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    background: var(--ink);
    color: var(--shade);
    opacity: 0;
    transition: opacity 0.15s;
}

.swatch[data-intent="yes"] .swatch-intent {
    left: 20px;
    opacity: 1;
}

.swatch[data-intent="yes"] .swatch-intent::after {
    content: "Yes";
}

.swatch[data-intent="no"] .swatch-intent {
    right: 20px;
    opacity: 1;
}

.swatch[data-intent="no"] .swatch-intent::after {
    content: "Nope";
}

/* Buttons */

.actions {
    /* Positioned, so it paints above the swatch's glow. */
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    height: 56px;
    padding: 0 20px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 1.05rem;
    transition: transform 0.12s var(--ease), background-color 0.15s, box-shadow 0.15s;
}

.btn:active,
.btn.is-pressed {
    transform: scale(0.96);
}

.btn-no {
    background: var(--surface);
    box-shadow: inset 0 0 0 1px var(--border), var(--shadow);
}

.btn-no:hover {
    background: color-mix(in oklab, var(--surface) 92%, var(--text));
}

.btn-yes {
    background: var(--text);
    color: var(--bg);
    box-shadow: var(--shadow);
}

.btn-yes:hover {
    background: color-mix(in oklab, var(--text) 86%, var(--shade));
}

.hint {
    margin: -4px 0 0;
    text-align: center;
    font-size: 0.875rem;
    color: var(--muted);
}

.link {
    color: var(--muted);
    font-size: 0.875rem;
    font-weight: 550;
    text-decoration: underline;
    text-decoration-color: var(--border);
    text-underline-offset: 3px;
}

.link:hover {
    color: var(--text);
    text-decoration-color: currentColor;
}

/* Stats */

.stats {
    display: grid;
    gap: 12px;
}

.stat {
    display: flex;
    gap: 16px;
    align-items: center;
    padding: 14px;
    background: var(--surface);
    border-radius: 22px;
    box-shadow: inset 0 0 0 1px var(--border), var(--shadow);
}

.stat-swatch {
    flex: none;
    width: 76px;
    height: 76px;
    border-radius: var(--radius);
    background: var(--c);
    box-shadow: inset 0 0 0 1px rgb(0 0 0 / 0.06);
    transition: transform 0.15s var(--ease);
}

.stat-swatch:hover {
    transform: scale(1.04);
}

.stat-swatch.is-empty {
    background:
        repeating-linear-gradient(-45deg, var(--border) 0 6px, transparent 6px 12px);
}

.stat-body {
    min-width: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
}

.stat-label {
    margin: 0;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--muted);
}

.stat-hex {
    font-family: var(--mono);
    font-size: 1.15rem;
    font-weight: 600;
    border-radius: 6px;
}

.stat-name {
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0 8px;
    font-size: 0.9rem;
}

.stat-meta {
    margin: 0;
    font-size: 0.8rem;
    color: var(--muted);
}

.stat-empty .stat-meta {
    font-size: 0.9rem;
}

/* Footer */

.footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--muted);
}

.footer a {
    color: inherit;
}

/* Dialog */

.dialog {
    width: min(calc(100% - 32px), 26rem);
    padding: 0;
    border: 0;
    border-radius: 24px;
    background: var(--surface);
    color: var(--text);
    box-shadow: 0 24px 64px -16px rgb(0 0 0 / 0.45);
}

.dialog::backdrop {
    background: rgb(5 8 15 / 0.45);
    backdrop-filter: blur(6px);
}

.dialog[open] {
    animation: dialog-in 0.22s var(--ease);
}

@keyframes dialog-in {
    from {
        opacity: 0;
        transform: translateY(8px) scale(0.98);
    }
}

.dialog-body {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 24px;
}

.dialog h2 {
    margin: 0;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.muted {
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
}

.field {
    display: flex;
    align-items: center;
    gap: 12px;
    height: 56px;
    padding: 0 8px;
    border-radius: var(--radius);
    background: var(--bg);
    box-shadow: inset 0 0 0 1px var(--border);
}

.field:focus-within {
    box-shadow: inset 0 0 0 2px var(--text);
}

.field-swatch {
    flex: none;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: repeating-linear-gradient(-45deg, var(--border) 0 5px, transparent 5px 10px);
    transition: background-color 0.2s;
}

.field input {
    flex: 1;
    min-width: 0;
    height: 100%;
    border: 0;
    background: none;
    color: inherit;
    font-family: var(--mono);
    font-size: 1.15rem;
    outline: none;
}

.field-hint {
    margin: -6px 0 0;
    min-height: 1.25em;
    font-size: 0.85rem;
    color: var(--danger);
}

.dialog-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.dialog-actions .btn {
    height: 48px;
    font-size: 1rem;
}

/* Toast */

.toast {
    position: fixed;
    left: 50%;
    bottom: max(20px, env(safe-area-inset-bottom));
    display: inline-flex;
    align-items: center;
    gap: 10px;
    max-width: calc(100% - 32px);
    padding: 10px 16px;
    border-radius: 999px;
    background: var(--text);
    color: var(--bg);
    font-size: 0.9rem;
    font-weight: 550;
    box-shadow: 0 12px 32px -8px rgb(0 0 0 / 0.35);
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, 12px);
    transition: opacity 0.2s, transform 0.2s var(--ease);
}

.toast.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

.toast-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    box-shadow: 0 0 0 2px color-mix(in oklab, var(--bg) 40%, transparent);
}

@media (min-width: 640px) {
    .app {
        padding-top: 24px;
    }

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

    .stat {
        flex-direction: column;
        align-items: flex-start;
    }

    .stat-swatch {
        width: 100%;
        height: 88px;
    }
}

@media (prefers-reduced-motion: reduce) {
    :root {
        transition: none;
    }

    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }
}