:root {
    --bg: #0b0d10;
    --surface: rgba(255, 255, 255, 0.045);
    --border: rgba(255, 255, 255, 0.09);
    --text: #f2f4f7;
    --muted: #8a929e;
    --open: #4ade80;
    --closed: #fb7185;
    --accent: var(--closed);
    --radius: 26px;
}

body.is-open { --accent: var(--open); }
body.is-closed { --accent: var(--closed); }

* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
    min-height: 100dvh;
    display: grid;
    place-items: center;
    padding: 1.5rem;
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', system-ui, sans-serif;
    font-feature-settings: 'ss01', 'cv11';
    -webkit-font-smoothing: antialiased;
}

/* ambient glow tinted by the current state */
.ambient {
    position: fixed;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(60vmax 60vmax at 50% -10%, color-mix(in srgb, var(--accent) 22%, transparent) 0%, transparent 70%),
        radial-gradient(45vmax 45vmax at 15% 105%, color-mix(in srgb, var(--accent) 12%, transparent) 0%, transparent 70%);
    transition: background 0.7s ease;
}

/* oversized logo watermark fading into the background */
.backdrop {
    position: fixed;
    inset: 0;
    display: grid;
    place-items: center;
    pointer-events: none;
}

.backdrop__logo {
    /* 4/4 of the page, kept square so it does not get cropped sideways */
    width: min(100%, 100vh);
    min-width: 340px;
    opacity: 0.35;
    filter: blur(14px) saturate(0.9);
    -webkit-mask-image: radial-gradient(closest-side, #000 40%, rgba(0, 0, 0, 0.5) 70%, transparent 100%);
    mask-image: radial-gradient(closest-side, #000 40%, rgba(0, 0, 0, 0.5) 70%, transparent 100%);
}

.card {
    position: relative;
    z-index: 1;
    width: min(100%, 420px);
    padding: 2rem 1.75rem 1.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    box-shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.8);
}

/* brand */
.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.brand__logo {
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.06);
}

.brand__text { display: flex; flex-direction: column; gap: 0.15rem; }

.brand__name {
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.brand__place {
    font-size: 0.78rem;
    color: var(--muted);
}

/* state */
.state {
    padding: 1.75rem 0;
    text-align: center;
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.8rem 0.35rem 0.6rem;
    border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
    border-radius: 999px;
    background: color-mix(in srgb, var(--accent) 10%, transparent);
    font-size: 0.75rem;
    font-weight: 500;
    color: color-mix(in srgb, var(--accent) 75%, white);
}

.pill__dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 60%, transparent);
    animation: pulse 2.4s infinite;
}

@keyframes pulse {
    70% { box-shadow: 0 0 0 8px transparent; }
    100% { box-shadow: 0 0 0 0 transparent; }
}

.state__word {
    margin: 0.9rem 0 0.5rem;
    font-size: clamp(2.6rem, 13vw, 3.4rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1;
    color: var(--accent);
}

.state__changed {
    font-size: 0.78rem;
    color: var(--muted);
    min-height: 1.2em;
}

/* toggle */
.toggle {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    width: 100%;
    padding: 5px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.04);
    font: inherit;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.toggle:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

.toggle__thumb {
    position: absolute;
    top: 5px;
    bottom: 5px;
    left: 5px;
    width: calc(50% - 5px);
    border-radius: 999px;
    background: var(--accent);
    transition: transform 0.42s cubic-bezier(0.6, -0.15, 0.3, 1.35), background 0.42s ease;
}

.is-open .toggle__thumb { transform: translateX(100%); }

.toggle__option {
    position: relative;
    padding: 0.85rem 0;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--muted);
    transition: color 0.3s ease;
}

.toggle:hover .toggle__option { color: var(--text); }

/* active side sits on the thumb, so it flips to dark ink */
.is-closed .toggle__option--closed,
.is-open .toggle__option--open,
.is-closed .toggle:hover .toggle__option--closed,
.is-open .toggle:hover .toggle__option--open {
    color: #0b0d10;
}

/* meta */
.meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    font-size: 0.78rem;
    color: var(--muted);
}

.meta__api {
    padding: 0.3rem 0.7rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--muted);
    text-decoration: none;
    letter-spacing: 0.06em;
    transition: color 0.2s, border-color 0.2s;
}

.meta__api:hover {
    color: var(--text);
    border-color: color-mix(in srgb, var(--accent) 50%, transparent);
}

/* badge borrowing the Punk IPA can palette and diagonal split */
.creed {
    display: block;
    width: fit-content;
    margin: 1.25rem auto 0;
    padding: 0.45rem 1rem;
    border-radius: 999px;
    background: linear-gradient(115deg,
        #6fc9e4 0 46%,
        #eef2f4 46% 54%,
        #1f9dbf 54% 100%);
    color: #0a2634;
    font-size: clamp(0.55rem, 2.6vw, 0.66rem);
    font-weight: 700;
    letter-spacing: clamp(0.08em, 0.5vw, 0.18em);
    text-transform: uppercase;
    white-space: nowrap;
    box-shadow: 0 8px 22px -10px rgba(31, 157, 191, 0.9);
}

/* pin dialog */
.pin {
    width: min(90vw, 320px);
    /* restore UA centering removed by the global margin reset */
    margin: auto;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: #14171c;
    color: var(--text);
}

.pin::backdrop {
    background: rgba(5, 6, 8, 0.7);
    backdrop-filter: blur(4px);
}

.pin__form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1.5rem;
}

.pin__label {
    font-size: 0.85rem;
    font-weight: 500;
}

.pin__input {
    padding: 0.7rem 0.9rem;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.04);
    color: var(--text);
    font: inherit;
    letter-spacing: 0.3em;
}

.pin__input:focus {
    outline: none;
    border-color: color-mix(in srgb, var(--accent) 60%, transparent);
}

.pin__error {
    font-size: 0.78rem;
    color: var(--closed);
}

.pin__actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    margin-top: 0.25rem;
}

.btn {
    padding: 0.55rem 1.1rem;
    border: none;
    border-radius: 999px;
    background: var(--accent);
    color: #0b0d10;
    font: inherit;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
}

.btn--ghost {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; animation: none !important; }
}