/* ============================================
   ShogiBoardQ - Top page
   Layout for index.html in each language.
   Colors come from the tokens in style.css.
   ============================================ */

.home section[id] {
    scroll-margin-top: 64px;
}

/* --- Navigation --- */
.home .nav-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
}

.home .nav-logo img {
    width: 28px;
    height: 28px;
    border-radius: 7px;
}

.home .nav-links {
    margin-left: auto;
    align-items: center;
}

.home .lang-menu {
    margin: 0 0 0 1.25rem;
}

.home .nav-toggle {
    margin-left: 0.5rem;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.6rem;
    border-radius: 8px;
    border: 1px solid transparent;
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.4;
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
}

.btn img,
.btn svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.btn--wood {
    background: var(--color-board);
    color: #2c2414;
    border-color: #c9a05c;
    box-shadow: 0 2px 0 #b8914f;
}

.btn--wood:hover {
    background: #e8c88c;
    color: #2c2414;
}

.btn--ghost {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.6);
}

.btn--ghost:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.14);
}

.btn--accent {
    background: var(--color-accent);
    color: #fff;
}

.btn--accent:hover {
    background: var(--color-accent-dark);
    color: #fff;
}

.btn--accent img {
    filter: brightness(0) invert(1);
}

.btn--outline {
    background: var(--color-card-bg);
    color: var(--color-accent-deeper);
    border-color: var(--color-border);
}

.btn--outline:hover {
    color: var(--color-accent-deeper);
    border-color: var(--color-accent);
}

/* --- Hero --- */
.home-hero {
    position: relative;
    padding: 7.5rem 1.5rem 0;
    color: var(--color-hero-text);
    text-align: center;
    /* The lower band matches the next section so the screenshot straddles both. */
    --hero-band: 14rem;
    background:
        linear-gradient(to bottom, transparent calc(100% - var(--hero-band)), var(--color-bg) calc(100% - var(--hero-band))),
        repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.05) 0 1px, transparent 1px 72px),
        repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.05) 0 1px, transparent 1px 72px),
        linear-gradient(170deg, #97a18e 0%, #899281 50%, #76816f 100%);
}

.home-hero__inner {
    max-width: 820px;
    margin: 0 auto;
}

.home-hero__icon {
    display: block;
    margin: 0 auto;
    width: 96px;
    height: 96px;
    border-radius: 22px;
    box-shadow: 0 8px 24px rgba(30, 40, 28, 0.35);
    margin-bottom: 1.25rem;
}

.home-hero__meta > span {
    display: inline-block;
    white-space: nowrap;
    margin: 0 0.6rem;
}

.home-hero__eyebrow {
    display: inline-block;
    margin-bottom: 0.9rem;
    padding: 0.2rem 0.9rem;
    border-radius: 999px;
    background: rgba(37, 46, 34, 0.28);
    font-size: 0.85rem;
    letter-spacing: 0.04em;
}

.home-hero h1 {
    font-family: var(--font-heading);
    font-size: 3.4rem;
    line-height: 1.15;
    letter-spacing: 0.03em;
    text-shadow: 0 2px 10px rgba(30, 40, 28, 0.3);
    margin-bottom: 1rem;
}

.home-hero__lead {
    font-size: 1.2rem;
    line-height: 1.85;
    color: rgba(255, 255, 255, 0.94);
    margin-bottom: 2rem;
}

.home-hero__actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.85rem;
    margin-bottom: 1.25rem;
}

.home-hero__meta {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 3rem;
}

.home-hero__shot {
    position: relative;
    z-index: 1;
    max-width: 1120px;
    margin: 0 auto;
}

.window-frame {
    overflow: hidden;
    border-radius: 12px;
    background: #fff;
    border: 1px solid rgba(37, 46, 34, 0.25);
    box-shadow: 0 24px 60px rgba(30, 40, 28, 0.35), 0 4px 12px rgba(30, 40, 28, 0.18);
}

.window-frame__bar {
    position: relative;
    height: 30px;
    background: linear-gradient(#f3f4ef, #e6e8de);
    border-bottom: 1px solid #d0d4c4;
    color: #4b5347;
    font-size: 0.8rem;
    line-height: 30px;
    text-align: center;
}

.window-frame__bar::before {
    content: "";
    position: absolute;
    left: 12px;
    top: 50%;
    width: 16px;
    height: 16px;
    margin-top: -8px;
    border-radius: 4px;
    background: url("../images/shogiboardq-icon.png") center / cover;
}

.window-frame a {
    display: block;
}

.window-frame img {
    display: block;
    width: 100%;
    height: auto;
}

.home-hero__shot figcaption {
    margin-top: 0.9rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* --- Stats --- */
.stats {
    padding: 3rem 1.5rem 3.5rem;
    background: var(--color-bg);
}

.stats__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    max-width: var(--max-width);
    margin: 0 auto;
    list-style: none;
}

.stats__item {
    padding: 1.25rem 1rem;
    text-align: center;
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
}

.stats__value {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.3rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-accent);
}

.stats__label {
    display: block;
    margin-top: 0.3rem;
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* --- Section heading --- */
.home .section-title::after {
    background: var(--color-board);
}

.section-kicker {
    display: block;
    text-align: center;
    color: var(--color-accent);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 0.4rem;
}

/* --- Highlights --- */
.highlight {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 3rem;
    align-items: center;
}

.highlight + .highlight {
    margin-top: 5.5rem;
}

.highlight--reverse {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
}

.highlight--reverse .highlight__text {
    order: 2;
}

.highlight__kicker {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--color-accent);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    margin-bottom: 0.5rem;
}

.highlight__kicker img {
    width: 22px;
    height: 22px;
}

.highlight h3 {
    font-family: var(--font-heading);
    font-size: 1.65rem;
    line-height: 1.45;
    color: var(--color-heading);
    margin-bottom: 1rem;
}

.highlight p {
    font-size: 0.97rem;
    color: var(--color-text);
    margin-bottom: 1rem;
}

.check-list {
    list-style: none;
    margin: 0 0 1.25rem;
}

.check-list li {
    position: relative;
    padding-left: 1.75rem;
    margin-bottom: 0.5rem;
    font-size: 0.93rem;
    line-height: 1.7;
}

.check-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.3rem;
    width: 1.1rem;
    height: 1.1rem;
    border-radius: 50%;
    background: var(--color-accent-light);
}

.check-list li::after {
    content: "";
    position: absolute;
    left: 0.38rem;
    top: 0.5rem;
    width: 0.32rem;
    height: 0.58rem;
    border-right: 2px solid var(--color-accent);
    border-bottom: 2px solid var(--color-accent);
    transform: rotate(45deg);
}

.link-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
}

.link-row a {
    font-weight: 700;
    font-size: 0.92rem;
    color: var(--color-accent);
}

.shot {
    margin: 0;
}

.shot a {
    display: block;
}

.shot img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    box-shadow: 0 14px 36px var(--color-card-shadow), 0 2px 6px rgba(30, 40, 28, 0.08);
    background: #fff;
}

.shot figcaption {
    margin-top: 0.7rem;
    font-size: 0.82rem;
    color: var(--color-text-muted);
    text-align: center;
}

.shot--narrow img {
    max-width: 88%;
    margin: 0 auto;
}

.shot-stack {
    position: relative;
    padding-bottom: 12%;
}

.shot-stack__back {
    width: 84%;
}

.shot .shot-stack__front {
    position: absolute;
    right: 0;
    bottom: 0;
    width: 40%;
}

.shot-stack__front img {
    box-shadow: 0 18px 44px rgba(30, 40, 28, 0.28), 0 3px 8px rgba(30, 40, 28, 0.12);
}

.piece-row {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 0.3rem;
    margin: 0 0 1.25rem;
    padding: 0.7rem 0.8rem;
    list-style: none;
    background: var(--color-sage);
    border-radius: 10px;
    box-shadow: inset 0 0 0 1px rgba(37, 46, 34, 0.15);
}

.piece-row img {
    display: block;
    width: 100%;
    max-width: 44px;
    height: auto;
    margin: 0 auto;
    filter: drop-shadow(0 1px 1px rgba(20, 25, 18, 0.35));
}

/* --- Feature groups --- */
.feature-intro {
    max-width: 760px;
    margin: -1.5rem auto 2.5rem;
    padding: 1rem 1.25rem;
    display: flex;
    gap: 0.9rem;
    align-items: flex-start;
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-board);
    border-radius: 10px;
    font-size: 0.9rem;
    color: var(--color-text);
}

.feature-intro img {
    width: 26px;
    height: 26px;
    flex-shrink: 0;
    margin-top: 0.15rem;
}

.feature-group + .feature-group {
    margin-top: 2.5rem;
}

.feature-group__title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--color-heading);
    margin-bottom: 1rem;
}

.feature-group__title::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.mini-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-auto-rows: 1fr;
    gap: 1rem;
    list-style: none;
}

.mini-card {
    display: flex;
    gap: 0.9rem;
    height: 100%;
    padding: 1.1rem 1.15rem;
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    color: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.mini-card:hover {
    text-decoration: none;
    color: inherit;
    border-color: var(--color-sage);
    box-shadow: 0 8px 22px var(--color-card-shadow);
    transform: translateY(-2px);
}

.mini-card__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    border-radius: 10px;
    background: var(--color-card-ivory);
    box-shadow: inset 0 0 0 1px #d8dbc9;
}

.mini-card__icon img {
    width: 26px;
    height: 26px;
}

.mini-card h4 {
    font-size: 1rem;
    color: var(--color-heading);
    line-height: 1.45;
    margin-bottom: 0.25rem;
}

.mini-card p {
    font-size: 0.86rem;
    line-height: 1.65;
    color: var(--color-text-muted);
}

.mini-card code {
    font-family: "JetBrains Mono", "Fira Code", "Source Code Pro", monospace;
    font-size: 0.92em;
    overflow-wrap: anywhere;
}

/* --- Download --- */
.download-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
    list-style: none;
}

.dl-card {
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-top: 4px solid var(--color-board);
    border-radius: 12px;
}

.dl-card h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--color-heading);
}

.dl-card__arch {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

.dl-card ol {
    margin: 0 0 1.25rem 1.2rem;
    font-size: 0.88rem;
    color: var(--color-text);
}

.dl-card ol li {
    margin-bottom: 0.2rem;
}

.dl-card code {
    font-family: "JetBrains Mono", "Fira Code", "Source Code Pro", monospace;
    font-size: 0.82em;
    padding: 0.05rem 0.3rem;
    border-radius: 4px;
    background: var(--color-code-bg);
    overflow-wrap: anywhere;
}

.dl-card .btn {
    margin-top: auto;
    width: 100%;
    font-size: 0.95rem;
}

.feature-intro a,
.dl-note a,
.home .license-link a {
    text-decoration: underline;
    text-underline-offset: 0.15em;
}

.dl-note {
    max-width: 820px;
    margin: 2rem auto 0;
    text-align: left;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    word-break: auto-phrase;
}

/* 中国語は auto-phrase が効かないので、文に入れた <wbr> と句読点の位置だけで折り返す */
.dl-note:lang(zh) {
    word-break: keep-all;
    overflow-wrap: anywhere;
}

/* 「リリースノート」のようなリンクの語の途中で折り返さない */
.dl-note a {
    white-space: nowrap;
}

.build-box {
    margin-top: 3rem;
    padding: 1.75rem;
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
}

.build-box h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-size: 1.15rem;
    color: var(--color-heading);
    margin-bottom: 0.5rem;
}

.build-box h3 img {
    width: 22px;
    height: 22px;
}

.build-box p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

.build-box__links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.build-box__links .btn {
    padding: 0.55rem 1.1rem;
    font-size: 0.9rem;
}

/* --- Footer --- */
.home-footer {
    background: var(--color-footer-bg);
    color: var(--color-footer-text);
    padding: 3rem 1.5rem 2rem;
    font-size: 0.88rem;
}

.home-footer__inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 2rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.home-footer__brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: #fff;
}

.home-footer__brand img {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.home-footer h2 {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: #fff;
    margin-bottom: 0.5rem;
}

.home-footer ul {
    list-style: none;
}

.home-footer li {
    margin-bottom: 0.3rem;
}

.home-footer a {
    color: var(--color-footer-text);
}

.home-footer a:hover {
    color: var(--color-board);
}

.home-footer__copy {
    max-width: var(--max-width);
    margin: 2rem auto 0;
    padding-top: 1.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 0.8rem;
    text-align: center;
}

/* --- Responsive --- */
@media (max-width: 1100px) {
    .home .nav-links {
        margin-left: 0;
    }

    .home .lang-menu {
        margin-left: auto;
    }
}

@media (max-width: 960px) {
    .highlight,
    .highlight--reverse {
        grid-template-columns: 1fr;
        gap: 1.75rem;
    }

    .highlight--reverse .highlight__text {
        order: 0;
    }

    .highlight + .highlight {
        margin-top: 4rem;
    }

    .mini-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

    .stats__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .home-hero {
        padding: 5.5rem 1rem 0;
    }

    .home-hero__icon {
        width: 72px;
        height: 72px;
        border-radius: 17px;
    }

    .home-hero h1 {
        font-size: 2.3rem;
    }

    .home-hero__lead {
        font-size: 1rem;
    }

    .home-hero__meta {
        margin-bottom: 2rem;
    }

    .home-hero {
        --hero-band: 5rem;
    }

    .window-frame {
        border-radius: 8px;
    }

    .window-frame__bar {
        height: 22px;
        line-height: 22px;
        font-size: 0.7rem;
    }

    .window-frame__bar::before {
        width: 12px;
        height: 12px;
        margin-top: -6px;
        left: 8px;
    }

    .stats {
        padding: 2rem 1rem 2.5rem;
    }

    .stats__value {
        font-size: 1.8rem;
    }

    .highlight h3 {
        font-size: 1.35rem;
    }

    .mini-grid {
        grid-template-columns: 1fr;
        grid-auto-rows: auto;
    }

    .feature-intro {
        margin-top: -0.5rem;
    }

    .piece-row {
        grid-template-columns: repeat(6, minmax(0, 1fr));
        gap: 0.5rem 0.3rem;
    }
}

@media (max-width: 480px) {
    .home .lang-menu {
        margin-left: auto;
    }

    .home-hero h1 {
        font-size: 2rem;
    }

    .btn {
        width: 100%;
    }

    .stats__item {
        padding: 1rem 0.5rem;
    }

    .stats__label {
        font-size: 0.8rem;
    }

    .build-box {
        padding: 1.25rem;
    }
}