/* 新唐人旗鼓隊 · 7gu.tw
   ─────────────────────────────────────────────────────────────
   主色取自表演隊服：#3268D6。深藍作底、金色只當細線與重點，
   版面留白給照片，文字盡量少而安靜。                              */

:root {
    /* 隊服藍 */
    --blue: #3268d6;
    --blue-deep: #1e408e;
    --blue-dim: #24407a;

    /* 深藍底 */
    --ink: #0b1833;
    --ink-2: #10203f;
    --ink-3: #16294c;

    /* 紙面 */
    --paper: #f6f7fa;
    --paper-2: #eaedf4;

    --text: #182034;
    --muted: #5c6884;
    --on-ink: #e9edf6;
    --on-ink-muted: #9fadc8;

    /* 旗上的金 */
    --gold: #b8892c;
    --gold-on-ink: #e2b458;

    --wrap: 1120px;
    --gut: clamp(1.25rem, 4vw, 2.5rem);
    --sec-pad: clamp(4.5rem, 11vw, 9rem);

    --sans: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", "Helvetica Neue", Arial, sans-serif;
    --serif: "Noto Serif TC", "Source Han Serif TC", "Songti TC", "PingFang TC", "Microsoft JhengHei", serif;
}

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

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

body {
    margin: 0;
    background: var(--ink);
    color: var(--text);
    font-family: var(--sans);
    font-size: clamp(1rem, 0.96rem + 0.2vw, 1.075rem);
    line-height: 1.9;
    letter-spacing: 0.03em;
    -webkit-font-smoothing: antialiased;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

a {
    color: inherit;
}

.wrap {
    width: 100%;
    max-width: var(--wrap);
    margin-inline: auto;
    padding-inline: var(--gut);
}

.skip {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 100;
    background: var(--ink);
    color: #fff;
    padding: 0.75rem 1.25rem;
}

.skip:focus {
    left: 0;
}

:where(a, button):focus-visible {
    outline: 2px solid var(--gold-on-ink);
    outline-offset: 4px;
}

/* ── 頁首 ─────────────────────────────────────────────────── */
.site-head {
    position: fixed;
    inset: 0 0 auto;
    z-index: 50;
    transition: background-color 0.4s ease, backdrop-filter 0.4s ease, border-color 0.4s ease;
    border-bottom: 1px solid transparent;
}

.site-head.is-stuck {
    background: rgba(11, 24, 51, 0.86);
    backdrop-filter: saturate(140%) blur(12px);
    border-bottom-color: rgba(226, 180, 88, 0.22);
}

.head-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    min-height: 4.5rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    text-decoration: none;
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity 0.45s ease, transform 0.45s ease;
    pointer-events: none;
}

.site-head.is-stuck .brand {
    opacity: 1;
    transform: none;
    pointer-events: auto;
}

/* 標誌本身是去背的金色圖形，不要再加圓角或底色。 */
.brand-mark {
    width: 2.1rem;
    height: 2.1rem;
}

.brand-word {
    width: auto;
    height: 0.95rem;
    opacity: 0.95;
}

.nav {
    display: flex;
    gap: clamp(1rem, 3vw, 2.25rem);
    font-size: 0.9rem;
    letter-spacing: 0.16em;
}

.nav a {
    color: rgba(255, 255, 255, 0.82);
    text-decoration: none;
    padding: 0.35rem 0;
    position: relative;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.45);
}

.nav a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 1px;
    background: var(--gold-on-ink);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.35s ease;
}

.nav a:hover {
    color: #fff;
}

.nav a:hover::after {
    transform: scaleX(1);
}

/* ── 首屏 ─────────────────────────────────────────────────── */
.hero {
    position: relative;
    min-height: 100svh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--ink);
}

.hero-media,
.hero-media picture,
.hero-media img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.hero-media img {
    object-fit: cover;
    object-position: 50% 42%;
    animation: slow-zoom 26s ease-out forwards;
}

@keyframes slow-zoom {
    from {
        transform: scale(1.06);
    }

    to {
        transform: scale(1);
    }
}

.hero-veil {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(11, 24, 51, 0.72) 0%, rgba(11, 24, 51, 0.42) 34%, rgba(11, 24, 51, 0.78) 100%),
        radial-gradient(120% 80% at 50% 55%, rgba(30, 64, 142, 0.15), rgba(8, 16, 34, 0.7));
}

.hero-inner {
    position: relative;
    text-align: center;
    padding-block: 6rem;
}

.hero-word {
    width: min(560px, 78vw);
    height: auto;
    margin-inline: auto;
    filter: drop-shadow(0 6px 26px rgba(0, 0, 0, 0.55));
    animation: rise 1.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.hero-sub {
    margin: clamp(1.5rem, 4vw, 2.4rem) 0 0;
    color: rgba(255, 255, 255, 0.9);
    font-size: clamp(0.95rem, 0.85rem + 0.5vw, 1.15rem);
    letter-spacing: 0.55em;
    text-indent: 0.55em;
    text-shadow: 0 2px 14px rgba(0, 0, 0, 0.6);
    animation: rise 1.4s 0.22s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.hero-sub::before {
    content: "";
    display: block;
    width: 2.5rem;
    height: 1px;
    margin: 0 auto 1.6rem;
    background: linear-gradient(90deg, transparent, var(--gold-on-ink), transparent);
}

@keyframes rise {
    from {
        opacity: 0;
        transform: translateY(28px);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

.hero-cue {
    position: absolute;
    left: 50%;
    bottom: 2.25rem;
    translate: -50% 0;
    width: 1.5rem;
    height: 2.5rem;
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 1rem;
    display: grid;
    place-items: start center;
    padding-top: 0.5rem;
}

.hero-cue span {
    width: 2px;
    height: 0.5rem;
    border-radius: 1px;
    background: rgba(255, 255, 255, 0.85);
    animation: cue 2s ease-in-out infinite;
}

@keyframes cue {

    0%,
    100% {
        transform: translateY(0);
        opacity: 1;
    }

    60% {
        transform: translateY(0.85rem);
        opacity: 0.15;
    }
}

/* ── 區段共用 ─────────────────────────────────────────────── */
.sec {
    padding-block: var(--sec-pad);
    scroll-margin-top: 4.5rem;
}

.sec-paper {
    background: var(--paper);
    color: var(--text);
}

.sec-ink {
    background: var(--ink);
    color: var(--on-ink);
}

.eyebrow {
    margin: 0 0 1rem;
    font-size: 0.78rem;
    letter-spacing: 0.42em;
    text-indent: 0.42em;
    color: var(--gold);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.eyebrow::after {
    content: "";
    flex: 0 0 3.5rem;
    height: 1px;
    background: currentColor;
    opacity: 0.5;
}

.sec-ink .eyebrow {
    color: var(--gold-on-ink);
}

.h-sec,
.h-lead {
    font-family: var(--serif);
    font-weight: 500;
    letter-spacing: 0.1em;
    line-height: 1.5;
    margin: 0 0 1.5rem;
}

.h-sec {
    font-size: clamp(1.6rem, 1.15rem + 2vw, 2.5rem);
}

.h-lead {
    font-size: clamp(1.5rem, 1.1rem + 1.8vw, 2.25rem);
}

.lede {
    margin: 0;
    color: var(--muted);
    max-width: 40em;
}

.sec-ink .lede {
    color: var(--on-ink-muted);
}

.lede-wide {
    max-width: 46em;
}

/* ── 緣起 ─────────────────────────────────────────────────── */
.origin-grid {
    display: grid;
    grid-template-columns: 1.35fr 1fr;
    gap: clamp(2.5rem, 6vw, 5rem);
    align-items: center;
}

.origin-photo {
    margin: 0;
    position: relative;
}

.origin-photo img {
    width: 100%;
    box-shadow: 0 24px 60px -28px rgba(11, 24, 51, 0.55);
}

.origin-photo::after {
    content: "";
    position: absolute;
    inset: auto -0.9rem -0.9rem auto;
    width: 45%;
    height: 45%;
    border-right: 1px solid var(--blue);
    border-bottom: 1px solid var(--blue);
    opacity: 0.45;
}

.people {
    margin: clamp(2.5rem, 6vw, 3.5rem) 0 0;
    border-top: 1px solid rgba(24, 32, 52, 0.12);
}

.person {
    display: grid;
    grid-template-columns: 6.5rem 1fr;
    gap: 1.25rem;
    padding: 1.35rem 0;
    border-bottom: 1px solid rgba(24, 32, 52, 0.12);
}

.person dt {
    font-size: 0.85rem;
    letter-spacing: 0.2em;
    color: var(--gold);
    line-height: 2.1;
}

.person dd {
    margin: 0;
}

.person b {
    font-weight: 600;
    letter-spacing: 0.08em;
}

.person span {
    display: block;
    font-size: 0.9rem;
    color: var(--muted);
    line-height: 1.8;
}

/* ── 曲目 ─────────────────────────────────────────────────── */
.pieces {
    margin-top: clamp(3rem, 7vw, 4.5rem);
    display: grid;
    gap: clamp(3.5rem, 9vw, 7rem);
}

.piece {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: clamp(2rem, 5vw, 4rem);
    align-items: center;
}

/* 交錯排版：照片換到右邊時，寬的那一欄也要跟著換過去。 */
.piece-flip {
    grid-template-columns: 1fr 1.6fr;
}

.piece-flip .piece-photo {
    order: 2;
}

.piece-photo {
    margin: 0;
    overflow: hidden;
}

/* 三張照片的原始比例不一，統一裁成 4:3，三段的節奏才會一致。 */
.piece-photo img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.piece:hover .piece-photo img {
    transform: scale(1.03);
}

.piece-text h3 {
    font-family: var(--serif);
    font-size: clamp(1.35rem, 1.05rem + 1.2vw, 1.85rem);
    font-weight: 500;
    letter-spacing: 0.14em;
    margin: 0 0 1.1rem;
    padding-bottom: 1.1rem;
    border-bottom: 1px solid rgba(226, 180, 88, 0.3);
}

.piece-text p {
    margin: 0;
    color: var(--on-ink-muted);
}

/* ── 足跡 ─────────────────────────────────────────────────── */
/* 固定三欄，六個項目剛好兩排——用 auto-fit 會多出一格空白灰塊。 */
.venues {
    list-style: none;
    margin: clamp(2.5rem, 6vw, 3.75rem) 0 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: rgba(24, 32, 52, 0.12);
    border: 1px solid rgba(24, 32, 52, 0.12);
}

.venues li {
    background: var(--paper);
    padding: 1.6rem clamp(1.25rem, 3vw, 1.9rem);
    transition: background-color 0.35s ease;
}

.venues li:hover {
    background: var(--paper-2);
}

.venues .city {
    display: block;
    font-family: var(--serif);
    font-size: 1.15rem;
    letter-spacing: 0.14em;
    color: var(--blue-deep);
}

.venues .place {
    display: block;
    margin-top: 0.35rem;
    font-size: 0.95rem;
}

.venues .en {
    display: block;
    margin-top: 0.15rem;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    color: var(--muted);
}

/* ── 整幅照片 ─────────────────────────────────────────────── */
.band {
    position: relative;
    margin: 0;
    background: var(--ink);
}

.band img {
    width: 100%;
    height: clamp(20rem, 52vw, 34rem);
    object-fit: cover;
    object-position: 50% 55%;
    opacity: 0.86;
}

.band figcaption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: clamp(1.25rem, 4vw, 2.5rem);
    color: rgba(255, 255, 255, 0.92);
    font-size: 0.85rem;
    letter-spacing: 0.28em;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.7);
}

/* ── 影像 ─────────────────────────────────────────────────── */
/* 照片有直有橫，用多欄排版讓每張都保留原來的比例，不必硬裁，
   也不會像 grid 那樣在底部留下參差的空格。 */
.grid {
    margin-top: clamp(0.75rem, 2vw, 1.25rem);
    columns: 3;
    column-gap: clamp(0.75rem, 2vw, 1.25rem);
}

.cell {
    position: relative;
    margin: 0 0 clamp(0.75rem, 2vw, 1.25rem);
    break-inside: avoid;
    overflow: hidden;
    background: var(--ink-2);
}

.cell img {
    width: 100%;
    transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.5s ease;
    opacity: 0.92;
}

.cell:hover img {
    transform: scale(1.04);
    opacity: 1;
}

/* 影像區開頭的整幅橫圖 */
.gallery-lead {
    position: relative;
    margin: clamp(2.5rem, 6vw, 4rem) 0 0;
    overflow: hidden;
}

.gallery-lead img {
    width: 100%;
    aspect-ratio: 21 / 9;
    object-fit: cover;
    opacity: 0.94;
}

.cell figcaption,
.gallery-lead figcaption {
    position: absolute;
    left: 0;
    bottom: 0;
    padding: 2.5rem 1.1rem 0.9rem;
    width: 100%;
    font-size: 0.78rem;
    letter-spacing: 0.24em;
    color: rgba(255, 255, 255, 0.9);
    background: linear-gradient(180deg, transparent, rgba(8, 16, 34, 0.75));
}

/* ── 頁尾 ─────────────────────────────────────────────────── */
.site-foot {
    background: var(--ink-2);
    color: var(--on-ink-muted);
    border-top: 1px solid rgba(226, 180, 88, 0.2);
    padding-block: clamp(3rem, 7vw, 4.5rem);
    text-align: center;
}

.foot-word {
    width: min(240px, 56vw);
    height: auto;
    margin-inline: auto;
    opacity: 0.85;
}

.foot-note {
    margin: 1.75rem 0 0;
    font-size: 0.85rem;
    letter-spacing: 0.16em;
}

.foot-domain {
    margin: 0.5rem 0 0;
    font-size: 0.8rem;
    letter-spacing: 0.3em;
    color: var(--gold-on-ink);
    opacity: 0.75;
}

/* ── 進場動畫 ─────────────────────────────────────────────── */
.reveal {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1), transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.is-in {
    opacity: 1;
    transform: none;
}

/* ── 窄螢幕 ───────────────────────────────────────────────── */
@media (max-width: 860px) {

    .origin-grid,
    .piece {
        grid-template-columns: 1fr;
    }

    .piece-flip {
        grid-template-columns: 1fr;
    }

    .piece-flip .piece-photo {
        order: 0;
    }

    .origin-photo {
        max-width: 24rem;
    }

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

    .grid {
        columns: 2;
    }
}

@media (max-width: 560px) {
    .nav {
        font-size: 0.8rem;
        letter-spacing: 0.1em;
        gap: 1rem;
    }

    .brand-word {
        display: none;
    }

    .person {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }

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

    .grid {
        columns: 1;
    }
}

/* 使用者要求減少動態時，一律不動。 */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }

    .brand {
        opacity: 1;
        transform: none;
        pointer-events: auto;
    }
}