/* ============================================================
   全球校友文教基金會官方網站 — static site stylesheet
   Palette: deep green (education/growth) + gold accent
   ============================================================ */
:root {
    --green:       #1b6e42;
    --green-dark:  #124d2d;
    --gold:      #c9a227;
    --green-soft: #e7f2e9;
    --ink:       #222a24;
    --muted:     #6d7a70;
    --paper:     #f6faf6;
    --panel:     #ffffff;
    --border:    #d9e6da;
    --radius:    10px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font: 16px/1.75 "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    color: var(--ink);
    background: var(--paper);
}
a { color: var(--green); text-decoration: none; }
a:hover { color: var(--green-dark); }
img { max-width: 100%; }
h1, h2, h3 { line-height: 1.35; }
.container { max-width: 1080px; margin: 0 auto; padding: 0 1.25rem; }
.muted { color: var(--muted); }

/* ---------- Header / Nav ---------- */
.site-header {
    background: var(--green);
    color: #fff;
    position: sticky; top: 0; z-index: 50;
    box-shadow: 0 2px 10px rgba(0,0,0,.18);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .6rem 1.25rem; }
.brand { display: flex; align-items: center; gap: .7rem; color: #fff; }
.brand:hover { color: #fff; }
.brand-mark {
    background: var(--gold); color: var(--green-dark);
    font-weight: 800; letter-spacing: .02em;
    border-radius: 8px; padding: .35rem .55rem; font-size: .95rem;
}
.brand-text strong { display: block; font-size: 1.05rem; letter-spacing: .06em; }
.brand-text small { display: block; font-size: .68rem; opacity: .85; letter-spacing: .02em; }

.nav-toggle-box { display: none; }
.nav-toggle { display: none; color: #fff; font-size: 1.5rem; cursor: pointer; user-select: none; }

.site-nav { display: flex; align-items: center; gap: .25rem; }
.site-nav > a, .nav-item > a {
    color: #fff; padding: .55rem .8rem; border-radius: 6px; font-size: .95rem; display: block;
}
.site-nav > a:hover, .nav-item > a:hover { background: rgba(255,255,255,.14); color: #fff; }
.nav-item { position: relative; }
.dropdown {
    display: none; position: absolute; top: 100%; left: 0; min-width: 240px;
    background: #fff; border: 1px solid var(--border); border-radius: 8px;
    box-shadow: 0 10px 28px rgba(0,0,0,.16); padding: .4rem; z-index: 60;
}
.nav-item:hover .dropdown { display: block; }
.dropdown a { display: block; padding: .5rem .7rem; border-radius: 6px; color: var(--ink); font-size: .9rem; }
.dropdown a:hover { background: var(--green-soft); color: var(--green-dark); }

/* ---------- Hero ---------- */
.hero {
    background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 70%);
    color: #fff; text-align: center; padding: 4.5rem 1rem 4rem;
}
.hero h1 { font-size: 2.3rem; margin: 0 0 .6rem; letter-spacing: .12em; }
.hero p { margin: 0 auto 1.6rem; max-width: 620px; opacity: .92; }
.hero .tagline { color: var(--gold); font-size: .95rem; letter-spacing: .3em; margin-bottom: .8rem; text-transform: uppercase; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-block; padding: .6rem 1.4rem; border-radius: 999px;
    border: 1px solid transparent; font-size: .95rem; cursor: pointer;
}
.btn-gold { background: var(--gold); color: var(--green-dark); font-weight: 600; }
.btn-gold:hover { background: #b8921f; color: var(--green-dark); }
.btn-line { border-color: rgba(255,255,255,.65); color: #fff; margin-left: .5rem; }
.btn-line:hover { background: rgba(255,255,255,.12); color: #fff; }
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-dark); color: #fff; }

/* ---------- Sections ---------- */
.section { padding: 3rem 0; }
.section-alt { background: #eaf3ec; }
.section-head { text-align: center; margin-bottom: 2rem; }
.section-head h2 { font-size: 1.6rem; margin: 0 0 .3rem; color: var(--green-dark); }
.section-head p { margin: 0; color: var(--muted); }
.kicker { color: var(--gold); font-size: .8rem; letter-spacing: .25em; font-weight: 600; }

/* ---------- Stats dashboard ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.25rem; }
.stat {
    background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 1.6rem 1.2rem; text-align: center;
    border-top: 4px solid var(--gold);
}
.stat .num { font-size: 2rem; font-weight: 800; color: var(--green-dark); }
.stat .label { color: var(--muted); font-size: .9rem; }

/* ---------- Card grids ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.25rem; }
.card {
    background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 1.5rem 1.3rem; display: block; color: var(--ink);
    transition: transform .15s ease, box-shadow .15s ease;
}
a.card:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(0,0,0,.09); color: var(--ink); }
.card .icon { font-size: 1.8rem; }
.card h3 { margin: .5rem 0 .35rem; font-size: 1.08rem; color: var(--green-dark); }
.card p { margin: 0; font-size: .9rem; color: var(--muted); }
.card ul { margin: .6rem 0 0; padding-left: 1.2rem; font-size: .88rem; color: var(--muted); }
.card ul li { margin: .15rem 0; }

/* ---------- Page banner (inner pages) ---------- */
.page-banner {
    background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 80%);
    color: #fff; padding: 2.6rem 0 2.2rem;
}
.page-banner h1 { margin: 0 0 .25rem; font-size: 1.8rem; letter-spacing: .08em; }
.page-banner p { margin: 0; opacity: .88; }
.crumbs { font-size: .82rem; opacity: .8; margin-bottom: .6rem; }
.crumbs a { color: var(--gold); }

/* ---------- Placeholder blocks ---------- */
.placeholder {
    border: 2px dashed var(--border); border-radius: var(--radius);
    background: repeating-linear-gradient(45deg, #f8fbf8, #f8fbf8 12px, #ecf3ed 12px, #ecf3ed 24px);
    color: var(--muted); text-align: center;
    padding: 3rem 1rem; font-size: .95rem;
}
.placeholder.tall { padding: 5.5rem 1rem; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); }
table.data { width: 100%; border-collapse: collapse; font-size: .92rem; }
table.data th, table.data td { padding: .65rem .9rem; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
table.data th { background: var(--green-soft); color: var(--green-dark); font-weight: 600; }
table.data tr:last-child td { border-bottom: 0; }

/* ---------- Timeline ---------- */
.timeline { list-style: none; margin: 0; padding: 0 0 0 1.4rem; border-left: 3px solid var(--gold); }
.timeline li { position: relative; padding: 0 0 1.6rem 1.2rem; }
.timeline li::before {
    content: ""; position: absolute; left: -1.95rem; top: .4rem;
    width: .85rem; height: .85rem; border-radius: 50%;
    background: var(--green); border: 3px solid var(--green-soft);
}
.timeline .when { font-weight: 700; color: var(--green-dark); }
.timeline p { margin: .2rem 0 0; color: var(--muted); font-size: .92rem; }

/* ---------- Progress bars ---------- */
.progress { margin-bottom: 1.4rem; }
.progress .head { display: flex; justify-content: space-between; font-size: .92rem; margin-bottom: .35rem; }
.progress .track { background: #ddebe0; border-radius: 999px; height: .8rem; overflow: hidden; }
.progress .fill { background: linear-gradient(90deg, var(--gold), var(--green)); height: 100%; border-radius: 999px; }

/* ---------- Year filter (CSS-only tabs) ---------- */
.year-filter input[type=radio] { display: none; }
.year-tabs { display: flex; gap: .5rem; flex-wrap: wrap; justify-content: center; margin-bottom: 1.5rem; }
.year-tabs label {
    padding: .45rem 1.3rem; border: 1px solid var(--border); border-radius: 999px;
    cursor: pointer; background: var(--panel); font-size: .95rem; color: var(--muted);
}
.year-panels .panel { display: none; }
#y2026:checked ~ .year-tabs label[for=y2026],
#y2025:checked ~ .year-tabs label[for=y2025],
#y2024:checked ~ .year-tabs label[for=y2024],
#yall:checked  ~ .year-tabs label[for=yall] {
    background: var(--green); color: #fff; border-color: var(--green);
}
#y2026:checked ~ .year-panels .p2026,
#y2025:checked ~ .year-panels .p2025,
#y2024:checked ~ .year-panels .p2024,
#yall:checked  ~ .year-panels .pall { display: block; }

/* ---------- Poster wall ---------- */
.poster-wall { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 1rem; }
.poster {
    aspect-ratio: 3 / 4; border-radius: var(--radius); border: 1px solid var(--border);
    background: var(--green-soft); display: flex; flex-direction: column;
    align-items: center; justify-content: center; color: var(--muted); font-size: .85rem;
}
.poster .icon { font-size: 2rem; margin-bottom: .4rem; }

/* ---------- Org chart (simple boxes) ---------- */
.org { text-align: center; }
.org .tier { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; margin-bottom: .6rem; }
.org .box {
    background: var(--panel); border: 1px solid var(--border); border-top: 4px solid var(--green);
    border-radius: 8px; padding: .8rem 1.4rem; font-size: .92rem; min-width: 130px;
}
.org .link { color: var(--muted); padding: .1rem 0 .7rem; font-size: 1.1rem; }

/* ---------- Forms (static skeleton) ---------- */
.form { display: grid; gap: 1rem; max-width: 560px; }
.form label { font-size: .9rem; font-weight: 600; color: var(--green-dark); display: block; margin-bottom: .3rem; }
.form input, .form textarea {
    width: 100%; padding: .6rem .8rem; border: 1px solid var(--border);
    border-radius: 8px; font: inherit; background: #fff;
}
.form input:focus, .form textarea:focus { outline: 2px solid var(--green-soft); border-color: var(--gold); }

/* ---------- Contact / social ---------- */
.social-matrix { display: flex; gap: .8rem; flex-wrap: wrap; }
.social-matrix a {
    display: inline-flex; align-items: center; gap: .45rem;
    border: 1px solid var(--border); background: var(--panel);
    padding: .45rem .95rem; border-radius: 999px; font-size: .9rem; color: var(--ink);
}
.social-matrix a:hover { border-color: var(--gold); color: var(--green-dark); }

/* ---------- Two-column helper ---------- */
.cols-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; }
.panel-box { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; }
.panel-box h3 { margin-top: 0; color: var(--green-dark); }

/* ---------- Footer ---------- */
.site-footer { background: #1e2b22; color: #c8d5ca; margin-top: 3rem; }
.footer-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem; padding: 2.6rem 1.25rem;
}
.site-footer h4 { color: var(--gold); margin: 0 0 .7rem; font-size: 1rem; letter-spacing: .1em; }
.site-footer a { color: #c8d5ca; display: block; padding: .15rem 0; font-size: .9rem; }
.site-footer a:hover { color: var(--gold); }
.site-footer p { font-size: .9rem; margin: .2rem 0; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.12); text-align: center;
    padding: 1rem; font-size: .82rem; color: #93a697;
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
    .nav-toggle { display: block; }
    .site-nav {
        display: none; position: absolute; top: 100%; left: 0; right: 0;
        background: var(--green-dark); flex-direction: column; align-items: stretch;
        padding: .5rem 1rem 1rem; gap: 0;
    }
    .nav-toggle-box:checked ~ .site-nav { display: flex; }
    .dropdown {
        display: block; position: static; background: transparent; border: 0;
        box-shadow: none; padding: 0 0 0 1rem;
    }
    .dropdown a { color: rgba(255,255,255,.85); font-size: .85rem; }
    .dropdown a:hover { background: rgba(255,255,255,.1); color: #fff; }
    .hero h1 { font-size: 1.7rem; }
}