:root {
    --copii-sky: #3b9eff;
    --copii-sun: #ffc107;
    --copii-grass: #43a047;
    --copii-coral: #ff6b6b;
    --copii-ink: #1a2a4a;
    --copii-paper: #fff6e9;
    --copii-cloud: #ffffff;
    --copii-font-display: "Fredoka", system-ui, sans-serif;
    --copii-font-body: "Nunito", system-ui, sans-serif;
    --copii-radius: 1.35rem;
    --copii-tap: 3.25rem;
}

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

html {
    font-size: 18px;
}

.copii-body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    color: var(--copii-ink);
    background:
        radial-gradient(circle at 12% 8%, #ffe08a 0, transparent 28%),
        radial-gradient(circle at 90% 0%, #b3e5fc 0, transparent 32%),
        var(--copii-paper);
    font-family: var(--copii-font-body);
}

.copii-container {
    max-width: 1100px;
}

.copii-header {
    padding: 0.85rem 0;
    background: rgba(255, 255, 255, 0.86);
    border-bottom: 3px solid #ffe082;
    position: sticky;
    top: 0;
    z-index: 20;
}

.copii-brand {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    color: var(--copii-ink);
    min-height: var(--copii-tap);
}

.copii-brand-mark {
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 1rem;
    display: grid;
    place-items: center;
    background: var(--copii-sky);
    color: #fff;
    font-family: var(--copii-font-display);
    font-size: 1.45rem;
    font-weight: 700;
}

.copii-brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.copii-brand-text strong {
    font-family: var(--copii-font-display);
    font-size: 1.35rem;
}

.copii-brand-text small {
    color: #4a5d7a;
    font-size: 0.85rem;
}

.copii-home-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    min-height: var(--copii-tap);
    padding: 0.45rem 1rem;
    border-radius: 999px;
    background: var(--copii-sun);
    color: var(--copii-ink);
    font-weight: 800;
    text-decoration: none;
}

.copii-home-btn:hover,
.copii-home-btn:focus-visible {
    filter: brightness(1.05);
    color: var(--copii-ink);
}

.copii-main {
    flex: 1 0 auto;
    padding: 1.5rem 0 2.5rem;
}

.copii-footer {
    flex-shrink: 0;
    padding: 1rem 0;
    background: #fff;
    border-top: 3px solid #c8e6c9;
    color: #4a5d7a;
    font-size: 0.95rem;
}

.copii-h1 {
    font-family: var(--copii-font-display);
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    margin-bottom: 0.35rem;
}

.copii-lead {
    font-size: 1.15rem;
    color: #3d516b;
    margin-bottom: 1.5rem;
}

.copii-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.copii-card {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    min-height: 8.5rem;
    padding: 1.1rem 1rem;
    border-radius: var(--copii-radius);
    background: var(--copii-cloud);
    box-shadow: 0 8px 0 rgba(26, 42, 74, 0.08);
    border: 3px solid #fff;
    color: var(--copii-ink);
    transition: transform 0.12s ease;
}

.copii-card:hover,
.copii-card:focus-visible {
    transform: translateY(-3px);
    color: var(--copii-ink);
}

.copii-card-cat {
    border-color: color-mix(in srgb, var(--cat-color) 45%, white);
    background: linear-gradient(180deg, #fff 55%, color-mix(in srgb, var(--cat-color) 16%, white));
}

.copii-card-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 1rem;
    display: grid;
    place-items: center;
    background: var(--cat-color, var(--copii-sky));
    color: #fff;
    font-size: 1.45rem;
}

.copii-card-title {
    font-family: var(--copii-font-display);
    font-size: 1.35rem;
}

.copii-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    align-items: center;
}

.copii-card-count {
    font-size: 0.9rem;
    color: #4a5d7a;
}

.copii-age-badge {
    display: inline-flex;
    align-items: center;
    min-height: 1.7rem;
    padding: 0.15rem 0.65rem;
    border-radius: 999px;
    background: #e8f5e9;
    color: #1b5e20;
    font-weight: 800;
    font-size: 0.85rem;
}

.copii-crumb {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.copii-crumb a {
    color: #1565c0;
}

.copii-gallery {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.copii-tile {
    background: #fff;
    border-radius: var(--copii-radius);
    padding: 1rem;
    text-align: center;
    box-shadow: 0 8px 0 rgba(26, 42, 74, 0.07);
}

.copii-swatch {
    display: block;
    height: 4.5rem;
    border-radius: 1.1rem;
    margin-bottom: 0.7rem;
    border: 3px solid rgba(26, 42, 74, 0.12);
}

.copii-swatch-sm {
    height: 2.2rem;
    width: 2.2rem;
    margin: 0;
    flex-shrink: 0;
}

.copii-glyph,
.copii-tile-icon {
    display: block;
    font-family: var(--copii-font-display);
    font-size: 3rem;
    line-height: 1.1;
    color: var(--copii-sky);
}

.copii-tile-icon {
    font-size: 2.4rem;
}

.copii-dots {
    display: flex;
    justify-content: center;
    gap: 0.3rem;
    flex-wrap: wrap;
    color: var(--copii-sky);
    font-size: 1.2rem;
    min-height: 2.4rem;
    align-items: center;
}

.copii-tile-name {
    display: block;
    font-family: var(--copii-font-display);
    font-size: 1.4rem;
}

.copii-tile-word {
    color: #4a5d7a;
}

.copii-quiz-q {
    font-family: var(--copii-font-display);
    font-size: 1.5rem;
}

.copii-quiz-options {
    display: grid;
    gap: 0.75rem;
}

.copii-choice {
    min-height: 4.5rem;
    border: 3px solid #d9e4f2;
    border-radius: var(--copii-radius);
    background: #fff;
    font-family: var(--copii-font-display);
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    cursor: pointer;
    padding: 0.5rem 0.7rem;
}

.copii-choice:hover,
.copii-choice:focus-visible {
    border-color: var(--copii-sky);
}

.copii-choice.is-correct {
    background: #c8e6c9;
    border-color: #2e7d32;
}

.copii-choice.is-wrong {
    background: #ffcdd2;
    border-color: #c62828;
}

.copii-quiz-feedback {
    font-weight: 800;
    font-size: 1.15rem;
    margin-top: 0.8rem;
}

.copii-count-visual {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    font-size: 2.4rem;
    color: var(--copii-sun);
    margin-bottom: 1rem;
}

.copii-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
}

.copii-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: var(--copii-tap);
    padding: 0.5rem 1.2rem;
    border-radius: 999px;
    background: var(--copii-sky);
    color: #fff;
    font-weight: 800;
    text-decoration: none;
}

.copii-btn:hover,
.copii-btn:focus-visible {
    color: #fff;
    filter: brightness(1.05);
}

.copii-btn-ghost {
    background: #fff;
    color: var(--copii-ink);
    border: 3px solid #d9e4f2;
}

.copii-empty {
    grid-column: 1 / -1;
    background: #fff;
    padding: 1.2rem;
    border-radius: var(--copii-radius);
}

.copii-body :focus-visible {
    outline: 4px solid var(--copii-sun);
    outline-offset: 3px;
}

@media (min-width: 768px) {
    .copii-grid,
    .copii-gallery {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .copii-quiz-options {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (min-width: 992px) {
    .copii-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

@media (prefers-reduced-motion: reduce) {
    .copii-card,
    .copii-home-btn,
    .copii-choice {
        transition: none;
    }

    .copii-card:hover,
    .copii-card:focus-visible {
        transform: none;
    }
}

.copii-skip {
    position: absolute;
    left: 0.75rem;
    top: -4rem;
    z-index: 40;
    background: #000;
    color: #fff;
    padding: 0.6rem 1rem;
    border-radius: 0.6rem;
    font-weight: 800;
}

.copii-skip:focus {
    top: 0.75rem;
}

.copii-header-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    justify-content: flex-end;
}

.copii-contrast-btn {
    background: #fff;
    border: 3px solid #1a2a4a;
}

.copii-pair {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.12rem;
    line-height: 1.15;
}

.copii-pair-en {
    font-family: var(--copii-font-body);
    font-size: 0.92em;
    font-weight: 800;
    color: #0d47a1;
}

.copii-pair-en::before {
    content: "EN ";
    font-size: 0.72em;
    letter-spacing: 0.04em;
    opacity: 0.75;
}

.copii-quiz-feedback [lang="en"] {
    display: block;
    color: #0d47a1;
    font-weight: 800;
}

.copii-body.is-contrast {
    --copii-ink: #000;
    --copii-paper: #fff;
    --copii-cloud: #fff;
    --copii-sky: #003399;
    background: #fff;
    color: #000;
}

.copii-body.is-contrast .copii-header,
.copii-body.is-contrast .copii-footer,
.copii-body.is-contrast .copii-card,
.copii-body.is-contrast .copii-tile,
.copii-body.is-contrast .copii-choice,
.copii-body.is-contrast .copii-empty {
    background: #fff;
    border: 3px solid #000;
    box-shadow: none;
}

.copii-body.is-contrast .copii-lead,
.copii-body.is-contrast .copii-tile-word,
.copii-body.is-contrast .copii-brand-text small,
.copii-body.is-contrast .copii-card-count {
    color: #000;
}

.copii-body.is-contrast .copii-pair-en,
.copii-body.is-contrast .copii-quiz-feedback [lang="en"] {
    color: #000;
    text-decoration: underline;
}

.copii-body.is-contrast .copii-age-badge {
    background: #000;
    color: #fff;
}

.copii-body.is-contrast .copii-swatch {
    border-color: #000;
}

.copii-speak {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    min-height: 2.8rem;
    margin-top: 0.65rem;
    padding: 0.35rem 0.85rem;
    border: 3px solid #d9e4f2;
    border-radius: 999px;
    background: #e3f2fd;
    color: var(--copii-ink);
    font-family: var(--copii-font-body);
    font-weight: 800;
    font-size: 0.95rem;
    cursor: pointer;
}

.copii-speak:hover,
.copii-speak:focus-visible {
    border-color: var(--copii-sky);
}

.copii-quiz > .copii-speak {
    margin-bottom: 1rem;
}

.copii-body.is-sound-off .copii-speak {
    opacity: 0.55;
}

.copii-body.is-contrast .copii-speak {
    background: #fff;
    border-color: #000;
}