/* Kanji study page: search, kanji cards, and vocabulary rows. */

.kanji-main {
    padding-bottom: clamp(1rem, 4vw, 3rem);
}

.kanji-page-head {
    margin-bottom: clamp(1.8rem, 4vw, 3rem);
}

.kanji-page-head h1 {
    max-width: 18ch;
    margin: 0.5rem 0 0;
    font-family: "Inter Display", Inter, sans-serif;
    font-size: clamp(2.35rem, 5vw, 4.1rem);
    font-weight: 600;
    letter-spacing: -0.045em;
    line-height: 0.98;
    text-wrap: balance;
}

.kanji-page-head .ui-lede {
    max-width: 68ch;
    margin-top: 1rem;
}

.kanji-page-head__row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: clamp(1.5rem, 4vw, 3rem);
    align-items: end;
    margin-top: 1.2rem;
}

.kanji-stats {
    display: grid;
    grid-auto-flow: column;
    margin: 0;
    border: 1px solid var(--ui-line);
    border-radius: var(--ui-radius-md);
    background: var(--ui-surface);
    box-shadow: var(--ui-shadow-soft);
}

.kanji-stats > div {
    min-width: 6.5rem;
    padding: 0.85rem 1rem;
    border-left: 1px solid var(--ui-line);
}

.kanji-stats > div:first-child {
    border-left: 0;
}

.kanji-stats dt {
    color: var(--ui-faint);
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.kanji-stats dd {
    margin: 0.2rem 0 0;
    font-family: "Inter Display", Inter, sans-serif;
    font-size: 1.35rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    white-space: nowrap;
}

/* Search */
.kanji-search-wrap {
    position: sticky;
    top: 84px;
    z-index: 40;
    padding: 0.35rem 0;
    margin-bottom: clamp(1.4rem, 3vw, 2rem);
}

.kanji-search {
    position: relative;
    width: 100%;
}

.kanji-search__field {
    width: 100%;
    height: 3.65rem;
    padding: 0.8rem 3.4rem 0.8rem 3.15rem;
    border: 1px solid var(--ui-line);
    border-radius: 999px;
    color: var(--ui-text);
    background: var(--ui-surface-strong);
    box-shadow: var(--ui-shadow-soft);
    font: inherit;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.25s var(--ui-ease), box-shadow 0.25s var(--ui-ease);
}

.kanji-search__field::placeholder {
    color: var(--ui-faint);
}

.kanji-search__field:focus {
    border-color: var(--ui-accent);
    box-shadow: 0 0 0 3px rgba(124, 228, 213, 0.14), var(--ui-shadow-soft);
}

.kanji-search__field:disabled {
    cursor: wait;
    opacity: 0.7;
}

.kanji-search__field::-webkit-search-cancel-button {
    display: none;
}

.kanji-search__icon {
    position: absolute;
    top: 50%;
    left: 1.15rem;
    width: 1.2rem;
    height: 1.2rem;
    color: var(--ui-faint);
    pointer-events: none;
    transform: translateY(-50%);
}

.kanji-search__clear {
    position: absolute;
    top: 50%;
    right: 0.65rem;
    display: grid;
    place-items: center;
    width: 2.35rem;
    height: 2.35rem;
    padding: 0;
    border: 1px solid var(--ui-line);
    border-radius: 50%;
    color: var(--ui-muted);
    background: var(--ui-surface-soft);
    cursor: pointer;
    transform: translateY(-50%);
}

.kanji-search__clear svg {
    width: 1rem;
    height: 1rem;
}

.kanji-search__clear:hover {
    color: var(--ui-text);
    border-color: var(--ui-line-strong);
}

.kanji-search__clear:focus-visible {
    outline: 2px solid var(--ui-accent);
    outline-offset: 2px;
}

.kanji-search__results {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    left: 0;
    z-index: 50;
    display: grid;
    gap: 0.1rem;
    max-height: min(55vh, 28rem);
    overflow-y: auto;
    padding: 0.4rem;
    border: 1px solid var(--ui-line);
    border-radius: var(--ui-radius-md);
    background: var(--ui-bg-deep);
    box-shadow: var(--ui-shadow);
    overscroll-behavior: contain;
}

.kanji-search__result {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 0.7rem;
    align-items: center;
    width: 100%;
    padding: 0.65rem 0.75rem;
    border: 0;
    border-radius: 11px;
    color: var(--ui-text);
    background: transparent;
    font: inherit;
    text-align: left;
    cursor: pointer;
}

.kanji-search__result:hover,
.kanji-search__result:focus-visible {
    background: var(--ui-surface-soft);
    outline: none;
}

.kanji-search__result:focus-visible {
    box-shadow: inset 0 0 0 2px var(--ui-accent);
}

.kanji-search__result-type {
    min-width: 3.4rem;
    padding: 0.22rem 0.4rem;
    border: 1px solid var(--ui-line);
    border-radius: 999px;
    color: var(--ui-accent);
    font-size: 0.58rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-align: center;
    text-transform: uppercase;
}

.kanji-search__result-body {
    min-width: 0;
}

.kanji-search__result-primary {
    display: block;
    font-size: 0.92rem;
    font-weight: 600;
    line-height: 1.35;
}

.kanji-search__result-detail {
    display: block;
    overflow: hidden;
    color: var(--ui-muted);
    font-size: 0.74rem;
    line-height: 1.4;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.kanji-search__status {
    margin: 0;
    padding: 0.8rem;
    color: var(--ui-muted);
    font-size: 0.8rem;
    text-align: center;
}

/* Browser */
.kanji-browser {
    margin-top: 0.4rem;
}

.kanji-browser__head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

.kanji-browser__head h2 {
    margin: 0.2rem 0 0;
    font-family: "Inter Display", Inter, sans-serif;
    font-size: clamp(1.35rem, 2.4vw, 1.9rem);
    font-weight: 600;
    letter-spacing: -0.03em;
}

.kanji-browser__hint {
    margin: 0;
    color: var(--ui-faint);
    font-size: 0.74rem;
}

.kanji-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1rem;
    align-items: start;
}

/* Kanji card */
.kanji-card {
    overflow: hidden;
    scroll-margin-top: 145px;
    border: 1px solid var(--ui-line);
    border-radius: var(--ui-radius-lg);
    background: var(--ui-surface);
    box-shadow: var(--ui-shadow-soft);
    transition: border-color 0.25s var(--ui-ease), box-shadow 0.25s var(--ui-ease);
}

.kanji-card__header {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 0.8rem;
    align-items: center;
    width: 100%;
    padding: 0.95rem 1rem;
    border: 0;
    color: var(--ui-text);
    background: transparent;
    font: inherit;
    text-align: left;
    cursor: pointer;
}

.kanji-card__header:hover {
    background: var(--ui-surface-soft);
}

.kanji-card__header:focus-visible {
    outline: 2px solid var(--ui-accent);
    outline-offset: -2px;
}

.kanji-card__glyph {
    display: grid;
    place-items: center;
    width: 3.2rem;
    height: 3.2rem;
    border: 1px solid var(--ui-line);
    border-radius: 14px;
    color: var(--ui-text);
    background: var(--ui-surface-soft);
    font-family: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
    font-size: 2rem;
    line-height: 1;
}

.kanji-card__content {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    min-width: 0;
}

.kanji-card__meaning {
    overflow: hidden;
    font-size: 0.98rem;
    font-weight: 600;
    line-height: 1.3;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.kanji-card__readings {
    display: flex;
    flex-wrap: wrap;
    gap: 0.2rem 0.65rem;
}

.kanji-reading {
    color: var(--ui-muted);
    font-size: 0.72rem;
    line-height: 1.35;
}

.kanji-reading__label {
    margin-right: 0.25rem;
    color: var(--ui-accent);
    font-size: 0.58rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.kanji-card__chevron {
    color: var(--ui-faint);
    font-size: 1.1rem;
    line-height: 1;
}

/* Vocabulary */
.kanji-card__vocab {
    padding: 0.25rem 0.5rem 0.55rem;
    border-top: 1px solid var(--ui-line);
}

.kanji-word {
    display: grid;
    grid-template-columns: minmax(4.5rem, auto) minmax(5rem, 1fr) minmax(0, 1.3fr) auto;
    gap: 0.5rem;
    align-items: center;
    width: 100%;
    padding: 0.45rem 0.5rem;
    border: 0;
    border-radius: 10px;
    color: var(--ui-text);
    background: transparent;
    font: inherit;
    text-align: left;
    cursor: pointer;
}

.kanji-word:hover {
    background: var(--ui-surface-soft);
}

.kanji-word:focus-visible {
    outline: 2px solid var(--ui-accent);
    outline-offset: -2px;
}

.kanji-word__japanese {
    overflow: hidden;
    font-size: 0.92rem;
    font-weight: 600;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.kanji-word__kana {
    overflow: hidden;
    color: var(--ui-muted);
    font-size: 0.78rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.kanji-word__english {
    overflow: hidden;
    color: var(--ui-text);
    font-size: 0.8rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.kanji-word__classes {
    display: none;
    grid-column: 1 / -1;
    padding: 0 0 0.35rem;
    color: var(--ui-faint);
    font-size: 0.68rem;
    line-height: 1.4;
}

.kanji-word__play {
    color: var(--ui-accent);
    font-size: 0.72rem;
    line-height: 1;
}

.kanji-word.is-playing {
    background: var(--ui-surface-soft);
}

.kanji-word.is-playing .kanji-word__play {
    animation: kanji-play-pulse 0.8s ease-in-out infinite alternate;
}

.kanji-word.is-match-word {
    background: var(--ui-surface-soft);
    box-shadow: inset 0 0 0 1px var(--ui-accent);
}

.kanji-card__empty {
    margin: 0;
    padding: 0.55rem 0.5rem;
    color: var(--ui-faint);
    font-size: 0.8rem;
}

.kanji-card__more {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    width: calc(100% - 1rem);
    margin: 0 0.5rem 0.55rem;
    padding: 0.55rem 0.65rem;
    border: 1px solid var(--ui-line);
    border-radius: 10px;
    color: var(--ui-accent);
    background: var(--ui-surface-soft);
    font: inherit;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-align: left;
    cursor: pointer;
}

.kanji-card__more:hover {
    border-color: var(--ui-line-strong);
    background: var(--ui-surface);
}

.kanji-card__more:focus-visible {
    outline: 2px solid var(--ui-accent);
    outline-offset: 2px;
}

/* Detail drawer */
.kanji-drawer {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: auto;
    width: min(35rem, 100vw);
    max-width: none;
    height: 100dvh;
    max-height: none;
    margin: 0;
    padding: 0;
    border: 0;
    color: var(--ui-text);
    background: var(--ui-bg-deep);
    box-shadow: -20px 0 60px rgba(0, 0, 0, 0.22);
    overscroll-behavior: none;
}

.kanji-drawer::backdrop {
    background: rgba(3, 7, 11, 0.62);
}

.kanji-drawer__panel {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.kanji-drawer__head {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 0.9rem;
    align-items: start;
    padding: 1.25rem;
    border-bottom: 1px solid var(--ui-line);
    background: var(--ui-surface);
}

.kanji-drawer__glyph {
    display: grid;
    place-items: center;
    width: 3.4rem;
    height: 3.4rem;
    border: 1px solid var(--ui-line);
    border-radius: 14px;
    background: var(--ui-surface-soft);
    font-family: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
    font-size: 2.1rem;
    line-height: 1;
}

.kanji-drawer__heading {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    min-width: 0;
}

.kanji-drawer__heading h2 {
    margin: 0;
    font-family: "Inter Display", Inter, sans-serif;
    font-size: clamp(1.35rem, 3vw, 1.8rem);
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.15;
}

.kanji-drawer__readings {
    margin: 0;
    color: var(--ui-muted);
    font-size: 0.8rem;
    line-height: 1.5;
}

.kanji-drawer__close {
    display: inline-grid;
    place-items: center;
    width: 2.35rem;
    height: 2.35rem;
    padding: 0;
    border: 1px solid var(--ui-line);
    border-radius: 50%;
    color: var(--ui-muted);
    background: var(--ui-surface-soft);
    cursor: pointer;
}

.kanji-drawer__close svg {
    width: 1rem;
    height: 1rem;
}

.kanji-drawer__close:hover {
    color: var(--ui-text);
    border-color: var(--ui-line-strong);
}

.kanji-drawer__close:focus-visible {
    outline: 2px solid var(--ui-accent);
    outline-offset: 2px;
}

.kanji-drawer__body {
    flex: 1;
    overflow-y: auto;
    padding: 0.65rem 0.75rem 1.5rem;
    overscroll-behavior: contain;
}

.kanji-drawer .kanji-word {
    grid-template-columns: minmax(4.5rem, auto) minmax(0, 1fr) auto;
}

.kanji-drawer .kanji-word__japanese {
    grid-row: 1;
    grid-column: 1;
}

.kanji-drawer .kanji-word__kana {
    grid-row: 1;
    grid-column: 2;
}

.kanji-drawer .kanji-word__english {
    grid-row: 2;
    grid-column: 1 / 3;
    overflow: visible;
    white-space: normal;
}

.kanji-drawer .kanji-word__play {
    grid-row: 1;
    grid-column: 3;
}

.kanji-drawer .kanji-word__classes {
    display: block;
    grid-row: 3;
    grid-column: 1 / -1;
}

.kanji-drawer .kanji-card__empty {
    padding: 1rem 0.5rem;
    text-align: center;
}

@keyframes kanji-play-pulse {
    from { opacity: 0.45; }
    to { opacity: 1; }
}

/* Loading and error states */
.kanji-skeleton {
    min-height: 180px;
    border: 1px solid var(--ui-line);
    border-radius: var(--ui-radius-lg);
    background: linear-gradient(100deg, var(--ui-surface-soft) 20%, var(--ui-surface) 40%, var(--ui-surface-soft) 60%);
    background-size: 200% 100%;
    animation: kanji-skeleton 1.3s ease-in-out infinite;
}

@keyframes kanji-skeleton {
    from { background-position: 100% 0; }
    to { background-position: -100% 0; }
}

.kanji-state {
    grid-column: 1 / -1;
    margin: 0;
    padding: 1.25rem;
    border: 1px solid var(--ui-line);
    border-radius: var(--ui-radius-md);
    color: var(--ui-muted);
    background: var(--ui-surface);
    font-size: 0.9rem;
    line-height: 1.6;
    text-align: center;
}

.kanji-state button {
    margin-top: 0.85rem;
}

/* Back to top */
.kanji-scrolltop {
    position: fixed;
    right: clamp(1rem, 3vw, 2rem);
    bottom: clamp(1rem, 3vw, 2rem);
    z-index: 80;
    display: grid;
    place-items: center;
    width: 2.8rem;
    height: 2.8rem;
    padding: 0;
    border: 1px solid var(--ui-line);
    border-radius: 50%;
    color: var(--ui-text);
    background: var(--ui-surface-strong);
    box-shadow: var(--ui-shadow);
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transform: translateY(8px);
    transition: opacity 0.25s var(--ui-ease), transform 0.25s var(--ui-ease);
}

.kanji-scrolltop svg {
    width: 1.15rem;
    height: 1.15rem;
}

.kanji-scrolltop.is-visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

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

@media (max-width: 1020px) {
    .kanji-page-head__row {
        grid-template-columns: 1fr;
    }

    .kanji-stats {
        justify-self: start;
    }

    .kanji-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (max-width: 700px) {
    .kanji-page-head h1 {
        max-width: none;
        font-size: clamp(2.2rem, 10vw, 3.3rem);
    }

    .kanji-stats {
        width: 100%;
        grid-auto-flow: row;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .kanji-stats > div {
        min-width: 0;
        padding: 0.7rem 0.65rem;
    }

    .kanji-stats dd {
        font-size: 1.1rem;
    }

    .kanji-stats dt {
        font-size: 0.55rem;
        letter-spacing: 0.08em;
    }

    .kanji-search-wrap {
        top: 68px;
    }

    .kanji-search__field {
        height: 3.35rem;
        padding-left: 2.8rem;
        font-size: 0.95rem;
    }

    .kanji-search__icon {
        left: 0.95rem;
    }

    .kanji-search__clear {
        right: 0.5rem;
    }

    .kanji-grid {
        grid-template-columns: 1fr;
        gap: 0.7rem;
    }

    .kanji-browser__head {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.3rem;
    }

    .kanji-drawer {
        width: 100vw;
    }

    .kanji-drawer__head {
        padding: 1rem;
    }

    .kanji-card__header {
        padding: 0.8rem;
    }

    .kanji-card__glyph {
        width: 2.8rem;
        height: 2.8rem;
        font-size: 1.75rem;
    }

    .kanji-word {
        grid-template-columns: minmax(4rem, auto) minmax(0, 1fr) auto;
        gap: 0.3rem 0.5rem;
    }

    .kanji-word__japanese {
        grid-row: 1;
        grid-column: 1;
    }

    .kanji-word__kana {
        grid-row: 1;
        grid-column: 2;
    }

    .kanji-word__english {
        grid-row: 2;
        grid-column: 1 / 3;
        white-space: normal;
    }

    .kanji-word__play {
        grid-row: 1 / 3;
        grid-column: 3;
    }

    .kanji-word__classes {
        grid-row: 3;
        grid-column: 1 / -1;
    }
}

@media (prefers-reduced-motion: reduce) {
    .kanji-search__field,
    .kanji-card,
    .kanji-card__chevron,
    .kanji-scrolltop {
        transition: none;
    }

    .kanji-skeleton,
    .kanji-word.is-playing .kanji-word__play {
        animation: none;
    }
}