/* ============================================================
   LAYOUT CSS - Header / Footer / Sections（依 09-ui-ux-guidelines.md §6-8）
   ============================================================ */

/* ---------- Header ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--primary-dark);
    color: #fff;
    box-shadow: var(--shadow-md);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    gap: var(--space-md);
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; flex-shrink: 0; }
.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: var(--secondary);
    color: #fff;
    font-weight: 800;
    font-size: var(--text-sm);
    letter-spacing: .5px;
    flex-shrink: 0;
}
.brand-text strong { display: block; color: #fff; font-size: 16px; line-height: 1.25; }
.brand-text small { color: rgba(255,255,255,.6); font-size: 11px; letter-spacing: .3px; }

.main-nav { display: flex; align-items: center; gap: var(--space-lg); }
.main-nav-list { display: flex; gap: 2px; }
.main-nav-list a {
    color: rgba(255,255,255,.82);
    font-size: var(--text-sm);
    font-weight: 500;
    padding: 8px 12px;
    border-radius: var(--radius);
    transition: background var(--transition-fast), color var(--transition-fast);
    white-space: nowrap;
}
.main-nav-list a:hover,
.main-nav-list a.is-active { background: rgba(255,255,255,.12); color: #fff; }
.nav-actions { display: flex; gap: var(--space-sm); align-items: center; }
.nav-toggle {
    display: none;
    background: transparent;
    border: none;
    color: #fff;
    font-size: 26px;
    line-height: 1;
    padding: 4px 8px;
}
.nav-toggle.is-dark { color: var(--primary); }

/* ---------- Hero ---------- */
.hero {
    position: relative;
    background:
        radial-gradient(ellipse at 85% 20%, rgba(201,162,39,.18), transparent 45%),
        linear-gradient(135deg, #0D1F35 0%, var(--primary) 48%, #2D5A8E 100%);
    color: #fff;
    padding: var(--space-4xl) 0;
    overflow: hidden;
}
.hero-inner {
    display: grid;
    grid-template-columns: 1.15fr .85fr;
    gap: var(--space-3xl);
    align-items: center;
}
.hero-kicker {
    display: inline-block;
    color: var(--secondary-light);
    font-weight: 600;
    font-size: var(--text-sm);
    letter-spacing: .5px;
    margin-bottom: var(--space-md);
}
.hero h1 { color: #fff; font-size: 44px; line-height: 1.2; margin-bottom: var(--space-lg); }
.hero p.lead {
    color: rgba(255,255,255,.85);
    font-size: var(--text-lg);
    max-width: 480px;
}
.hero-ctas { display: flex; gap: var(--space-md); margin-top: var(--space-xl); flex-wrap: wrap; }
.hero-note { color: rgba(255,255,255,.55); font-size: var(--text-sm); margin-top: var(--space-lg); }

.hero-card {
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.18);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    backdrop-filter: blur(4px);
}
.hero-card h3 { color: #fff; margin-bottom: var(--space-md); font-size: var(--text-lg); }
.hero-card .hero-card-item {
    display: flex;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255,255,255,.12);
    color: rgba(255,255,255,.85);
    font-size: var(--text-sm);
}
.hero-card .hero-card-item:last-child { border-bottom: none; }
.hero-card .hci-icon { color: var(--secondary-light); flex-shrink: 0; }

/* ---------- Stats Band ---------- */
.stats-band { background: var(--gray-100); padding: var(--space-2xl) 0; }
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    text-align: center;
}
.stat-value { font-size: 40px; font-weight: 700; color: var(--primary); line-height: 1.1; }
.stat-label { color: var(--gray-700); font-size: var(--text-sm); margin-top: 4px; }

/* ---------- Section 通用 ---------- */
.section { padding: var(--space-3xl) 0; }
.section-alt { background: var(--gray-100); }
.section-head { margin-bottom: var(--space-xl); }
.section-kicker { color: var(--secondary-dark); font-size: var(--text-sm); font-weight: 600; letter-spacing: .5px; }
.section-head h2 { font-size: 28px; margin-top: 4px; }
.section-head p { color: var(--gray-500); max-width: 640px; margin-top: var(--space-sm); }
.section-head-flex {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.grid { display: grid; gap: var(--space-lg); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- 事件時間軸 ---------- */
.event-list { display: grid; gap: var(--space-md); }
.event-row {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    background: #fff;
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-fast);
}
.event-row:hover { box-shadow: var(--shadow-md); }
.event-date {
    flex-shrink: 0;
    width: 68px;
    text-align: center;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 10px 4px;
}
.event-date .ed-day { font-size: 26px; font-weight: 700; color: var(--primary); line-height: 1; }
.event-date .ed-mon { font-size: var(--text-xs); color: var(--gray-500); text-transform: uppercase; }
.event-row .event-info { flex: 1; min-width: 0; }
.event-row .event-info h3 { font-size: var(--text-lg); margin-bottom: 4px; }
.event-row .event-meta { color: var(--gray-500); font-size: var(--text-sm); display: flex; gap: var(--space-md); flex-wrap: wrap; }
/* ---------- CTA 帶 ---------- */
.cta-band {
    position: relative;
    background:
        radial-gradient(ellipse at 15% 0%, rgba(201,162,39,.22), transparent 50%),
        var(--primary-dark);
    color: #fff;
    padding: var(--space-3xl) 0;
    text-align: center;
    overflow: hidden;
}
.cta-band h2 { color: #fff; font-size: 30px; margin-bottom: var(--space-sm); }
.cta-band p { color: rgba(255,255,255,.78); max-width: 520px; margin: 0 auto var(--space-lg); }
.cta-band .cta-actions { display: flex; gap: var(--space-md); justify-content: center; flex-wrap: wrap; }

/* ---------- 合作夥伴 ---------- */
.partner-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    justify-content: center;
    align-items: center;
}
.partner-chip {
    background: #fff;
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-full);
    padding: 10px 24px;
    color: var(--gray-500);
    font-weight: 600;
    font-size: var(--text-base);
    box-shadow: var(--shadow-sm);
}

/* ---------- 頁首橫幅（內頁） ---------- */
.page-hero {
    background:
        linear-gradient(135deg, rgba(13,31,53,.95), rgba(45,90,142,.85)),
        var(--primary-dark);
    color: #fff;
    padding: var(--space-3xl) 0 var(--space-2xl);
}
.page-hero h1 { color: #fff; font-size: 36px; margin-top: 8px; }
.page-hero .page-hero-lead { color: rgba(255,255,255,.78); max-width: 640px; margin-top: var(--space-sm); }
.breadcrumb { color: rgba(255,255,255,.6); font-size: var(--text-sm); }
.breadcrumb a { color: var(--secondary-light); }
.breadcrumb a:hover { text-decoration: underline; }

/* ---------- 頁面內容 ---------- */
.prose { max-width: 820px; color: var(--gray-700); }
.prose p { margin-bottom: var(--space-md); }
.prose h3 { margin: var(--space-xl) 0 var(--space-sm); }
.prose ul { list-style: none; padding: 0; }
.prose ul li { padding-left: 22px; position: relative; margin-bottom: 8px; }
.prose ul li::before {
    content: '';
    position: absolute;
    left: 2px;
    top: 9px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--secondary);
}

/* ---------- Footer ---------- */
.site-footer { background: var(--primary-dark); color: rgba(255,255,255,.75); padding-top: var(--space-3xl); }
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr 1fr 1.3fr;
    gap: var(--space-xl);
    padding-bottom: var(--space-2xl);
}
.footer-col h4 { color: #fff; font-size: var(--text-base); margin-bottom: var(--space-md); }
.footer-col ul { display: grid; gap: 8px; }
.footer-col a { color: rgba(255,255,255,.7); font-size: var(--text-sm); }
.footer-col a:hover { color: var(--secondary-light); }
.footer-col p { font-size: var(--text-sm); margin-bottom: 8px; }
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: var(--space-md); }
.footer-brand strong { color: #fff; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.12);
    padding: var(--space-md) 0;
    font-size: var(--text-sm);
    color: rgba(255,255,255,.5);
}
.footer-bottom p { line-height: 1.9; }
.footer-bottom a { color: rgba(255,255,255,.62); text-decoration: underline; text-underline-offset: 3px; }
.footer-bottom a:hover { color: #fff; }

/* ---------- 響應式 ---------- */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .hero-inner { grid-template-columns: 1fr; gap: var(--space-xl); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .main-nav {
        position: fixed;
        top: var(--header-height);
        right: 0;
        left: 0;
        flex-direction: column;
        background: var(--primary-dark);
        max-height: 0;
        overflow: hidden;
        transition: max-height .3s ease;
        align-items: stretch;
        gap: 0;
    }
    .main-nav.is-open { max-height: 100vh; padding: var(--space-md) 0 var(--space-lg); overflow-y: auto; z-index: 100; }
    .main-nav-list { flex-direction: column; padding: 0 var(--space-md); gap: 4px; }
    .nav-actions { flex-direction: row; padding: var(--space-md); gap: var(--space-sm); }
    .nav-toggle { display: block; }
}

@media (max-width: 640px) {
    .grid-2,
    .grid-3,
    .grid-4 { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: var(--space-md); }
    .hero { padding: var(--space-3xl) 0; }
    .hero h1 { font-size: 32px; }
    .stat-value { font-size: 32px; }
    .event-row { flex-wrap: wrap; }
    .event-row .event-cta { width: 100%; }
    .event-row .event-cta .btn { width: 100%; }
    .section { padding: var(--space-2xl) 0; }
}
/* ---------- 語言切換（地球 hover 選單） ---------- */
.lang-switch { position: relative; flex-shrink: 0; }
.lang-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: 1px solid rgba(255,255,255,.35);
    color: #fff;
    padding: 0;
    border-radius: 50%;
    font-size: var(--text-sm);
    cursor: pointer;
}
.lang-btn:hover { background: rgba(255,255,255,.12); }

.lang-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 150px;
    background: #fff;
    border: 1px solid var(--gray-100);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 6px;
    display: none;
    z-index: 200;
}
.lang-menu.is-open,
.lang-switch:hover .lang-menu { display: grid; }
.lang-item {
    display: block;
    padding: 8px 14px;
    border-radius: var(--radius);
    color: var(--gray-700);
    font-size: var(--text-sm);
    text-decoration: none;
}
.lang-item:hover { background: var(--gray-100); }
.lang-item.is-active { background: var(--info-bg); color: var(--primary); font-weight: 600; }

/* ---------- CAPTCHA ---------- */
.captcha-box { position: relative; }
.hp-field { position: absolute !important; left: -9999px; top: -9999px; height: 0; overflow: hidden; }
/* ---------- 首頁 Banner 左右滾動 ---------- */
.banner-hero { padding: 0; overflow: hidden; }
.banner-track {
    display: flex;
    transition: transform .6s ease;
}
.banner-slide {
    position: relative;
    flex: 0 0 100%;
    min-width: 100%;
    min-height: 540px;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    color: #fff;
}
.banner-slide.has-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(13,31,53,.85) 0%, rgba(13,31,53,.45) 55%, rgba(13,31,53,.15) 100%);
}
.banner-content { position: relative; z-index: 2; padding: 90px 0 70px; }
.banner-content h1 { color: #fff; font-size: 44px; line-height: 1.2; margin-bottom: 16px; max-width: 720px; }
.banner-content .lead { color: rgba(255,255,255,.9); font-size: 18px; max-width: 520px; }

.banner-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,.5);
    background: rgba(255,255,255,.12);
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .2s ease;
}
.banner-arrow:hover { background: rgba(255,255,255,.3); }
.banner-arrow.prev { left: 20px; }
.banner-arrow.next { right: 20px; }

.banner-dots {
    position: absolute;
    bottom: 22px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: 10px;
    z-index: 5;
}
.banner-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,.7);
    background: transparent;
    cursor: pointer;
    padding: 0;
}
.banner-dot.is-active { background: var(--secondary); border-color: var(--secondary); }

@media (max-width: 640px) {
    .banner-slide { min-height: 380px; }
    .banner-content h1 { font-size: 30px; }
}
.event-row .event-cta { flex-shrink: 0; }.banner-html { margin: 10px 0; max-width: 640px; }
.banner-btn { margin-top: 24px; display: flex; gap: 12px; }

/* ============================================================
   新版多層主選單（樹狀分類 + 手機折疊）＋ 工具圖示列
   ============================================================ */
.main-nav { flex: 1; justify-content: flex-end; min-width: 0; }
.main-nav-list { gap: 4px; }
.main-nav-list > li { position: relative; }
.main-nav-list .nav-parent {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: transparent;
    border: 0;
    cursor: pointer;
    color: rgba(255,255,255,.82);
    font: inherit;
    font-size: var(--text-sm);
    font-weight: 500;
    padding: 8px 12px;
    border-radius: var(--radius);
    transition: background var(--transition-fast), color var(--transition-fast);
    white-space: nowrap;
}
.main-nav-list .nav-parent:hover,
.main-nav-list .nav-parent.is-active { background: rgba(255,255,255,.12); color: #fff; }
.caret {
    display: inline-block;
    width: 6px; height: 6px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
    margin: -3px 0 0 2px;
    transition: transform var(--transition-fast);
}

/* 桌面版下拉選單 */
.has-dropdown .dropdown {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    min-width: 232px;
    padding: 6px;
    background: #fff;
    border: 1px solid var(--gray-100);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    display: grid;
    gap: 2px;
    visibility: hidden;
    opacity: 0;
    transform: translateY(6px);
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    z-index: 200;
}
.has-dropdown:hover > .dropdown,
.has-dropdown:focus-within > .dropdown,
.has-dropdown.is-open > .dropdown {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
}
.dropdown li a {
    display: block;
    padding: 9px 14px;
    color: var(--gray-700);
    font-size: var(--text-sm);
    font-weight: 500;
    border-radius: var(--radius);
}
.dropdown li a:hover { background: var(--info-bg); color: var(--primary); }
.dropdown li a.is-active { color: var(--primary); font-weight: 700; }

/* 右上工具圖示（會員／搜尋／語言） */
.site-tools { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,.35);
    background: transparent;
    color: #fff;
    cursor: pointer;
    transition: background var(--transition-fast), border-color var(--transition-fast);
    text-decoration: none;
}
.icon-btn:hover { background: rgba(255,255,255,.12); border-color: #fff; }
.icon-btn.is-active { background: rgba(255,255,255,.2); border-color: #fff; }

/* 搜尋列（header 下方滑出） */
.search-panel {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--gray-100);
    box-shadow: var(--shadow-md);
    padding: 14px 0;
    z-index: 90;
}
.search-panel-inner { display: flex; align-items: center; gap: 12px; }
.search-panel-inner form { display: flex; align-items: center; gap: 10px; flex: 1; max-width: 720px; margin: 0 auto; }
.search-panel-inner form .search-panel-ico { color: var(--gray-500); flex-shrink: 0; }
.search-panel-inner input[type="search"] {
    flex: 1;
    min-width: 0;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 9px 14px;
    font-size: var(--text-base);
    color: var(--gray-800);
}
.search-panel-inner input[type="search"]:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--info-bg); }
.search-close {
    background: transparent;
    border: 0;
    color: var(--gray-600);
    font-size: 18px;
    cursor: pointer;
    padding: 4px 8px;
}
.search-close:hover { color: var(--primary); }

/* ---------- 手機：下拉轉折疊手風琴 ---------- */
@media (max-width: 1024px) {
    .main-nav { padding: 4px 0 var(--space-lg); }
    .main-nav-list { gap: 2px; padding: 0 var(--space-md); }
    .main-nav-list > li { position: static; }
    .main-nav-list .nav-parent {
        width: 100%;
        justify-content: space-between;
        color: rgba(255,255,255,.85);
        padding: 11px 10px;
    }
    .main-nav-list li.is-open > .nav-parent .caret { transform: rotate(225deg); margin-top: 3px; }
    .has-dropdown .dropdown {
        position: static;
        visibility: visible;
        opacity: 1;
        transform: none;
        background: transparent;
        border: 0;
        border-radius: 0;
        box-shadow: none;
        display: none;
        min-width: 0;
        padding: 0 0 4px 16px;
        margin: 0;
    }
    .has-dropdown.is-open > .dropdown { display: block; }
    .dropdown li a { color: rgba(255,255,255,.72); padding: 9px 12px; }
    .dropdown li a:hover,
    .dropdown li a.is-active { background: rgba(255,255,255,.1); color: #fff; }
    .site-tools { gap: 6px; }
    .nav-toggle { display: block; }
}

@media (max-width: 640px) {
    .brand-text { display: none; }
    .brand-mark { width: 38px; height: 38px; }
    .icon-btn { width: 34px; height: 34px; }
    .lang-btn { width: 34px; height: 34px; border: 0; padding: 0; }
    .nav-toggle { font-size: 24px; }
    .search-panel-inner form .btn { padding-left: 10px; padding-right: 10px; }
}

/* 窄桌面：緊湊選單，避免溢出 */
@media (min-width: 1025px) and (max-width: 1320px) {
    .main-nav-list a,
    .main-nav-list .nav-parent { font-size: 12px; padding: 8px 7px; }
    .main-nav-list { gap: 0; }
    .brand-text strong { font-size: 14px; }
    .brand-text small { display: none; }
}