/* ==========================================================================
   凡酷日记 · 风光摄影作品集样式
   纯手写 CSS，不依赖任何外部资源
   ========================================================================== */

:root {
    --bg:        #14171a;
    --surface:   #1d2126;
    --surface-2: #24292f;
    --ink:       #e8e6e1;
    --ink-soft:  #a8adb3;
    --ink-faint: #7c828a;
    --line:      #2e343b;
    --accent:    #c9a25e;
    --accent-lt: #3a3325;
    --radius:    12px;
    --wrap:      1060px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
    font-size: 16px;
    line-height: 1.85;
    -webkit-text-size-adjust: 100%;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: none; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* ---------- 头部 ---------- */
.site-header {
    background: rgba(20, 23, 26, .92);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(6px);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 74px;
    flex-wrap: wrap;
    padding-top: 10px;
    padding-bottom: 10px;
}

.brand { display: block; color: var(--ink); }

.brand-name {
    display: block;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 3px;
}

.brand-sub {
    display: block;
    font-size: 12px;
    color: var(--ink-faint);
    letter-spacing: 1px;
}

.site-nav { display: flex; gap: 4px; flex-wrap: wrap; }

.site-nav a {
    display: block;
    padding: 7px 16px;
    border-radius: 999px;
    font-size: 14px;
    color: var(--ink-soft);
    transition: background .18s, color .18s;
}

.site-nav a:hover { background: var(--surface-2); color: var(--ink); }

.site-nav a.active { background: var(--accent); color: #1c1913; font-weight: 600; }

/* ---------- 首屏 ---------- */
.hero {
    background:
        radial-gradient(900px 380px at 85% -20%, rgba(201, 162, 94, .16), transparent 60%),
        var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 36px 32px;
    margin: 36px 0 40px;
}

.hero h1 {
    margin: 0 0 12px;
    font-size: 26px;
    letter-spacing: 2px;
}

.hero p {
    margin: 0;
    color: var(--ink-soft);
    font-size: 15.5px;
    max-width: 640px;
}

.hero-tags { margin-top: 18px; display: flex; gap: 8px; flex-wrap: wrap; }

.hero-tags span {
    font-size: 12.5px;
    color: var(--accent);
    background: var(--accent-lt);
    padding: 4px 14px;
    border-radius: 999px;
}

/* ---------- 区块标题 ---------- */
main { display: block; padding: 0 0 56px; }

.section-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    margin: 40px 0 22px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
}

.section-head h2 { margin: 0; font-size: 19px; letter-spacing: 2px; }

.section-head .more { font-size: 13.5px; color: var(--ink-faint); }

/* ---------- 照片网格 ---------- */
.photo-grid {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.photo-grid li { min-width: 0; }

.photo-card {
    display: block;
    width: 100%;
    padding: 0;
    border: 1px solid var(--line);
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    cursor: zoom-in;
    text-align: left;
    color: inherit;
    font: inherit;
    transition: border-color .18s, transform .18s, box-shadow .18s;
}

.photo-card:hover {
    border-color: #4a4436;
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, .35);
}

.photo-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.photo-card img {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform .35s ease;
}

.photo-card:hover img { transform: scale(1.04); }

.photo-caption {
    display: block;
    position: relative;
    padding: 26px 16px 14px;
    margin-top: -58px;
    background: linear-gradient(transparent, rgba(12, 14, 16, .88) 55%);
    color: #fff;
    pointer-events: none;
}

.photo-caption strong { display: block; font-size: 15.5px; letter-spacing: 1px; }

.photo-caption small {
    display: block;
    margin-top: 3px;
    font-size: 11.5px;
    color: rgba(255, 255, 255, .72);
    line-height: 1.7;
}

/* ---------- 页面提示 ---------- */
.gallery-note {
    margin-top: 26px;
    padding: 14px 20px;
    border: 1px dashed var(--line);
    border-radius: 10px;
    font-size: 13px;
    color: var(--ink-faint);
    line-height: 1.9;
    text-align: center;
}

.notice {
    background: var(--surface);
    border: 1px dashed var(--line);
    border-radius: var(--radius);
    padding: 48px 30px;
    text-align: center;
    color: var(--ink-soft);
}

.notice h1 { margin: 0 0 12px; font-size: 21px; color: var(--ink); }

/* ---------- 灯箱 ---------- */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 100;
    background: rgba(10, 11, 13, .94);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 56px 76px;
}

.lightbox[hidden] { display: none; }

.lb-stage {
    margin: 0;
    max-width: min(1100px, 100%);
    max-height: 100%;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

#lb-img {
    display: block;
    margin: 0 auto;
    max-width: 100%;
    max-height: 62vh;
    object-fit: contain;
    border-radius: 10px;
    background: #0c0d0f;
}

.lb-info { color: var(--ink); }

.lb-info h3 { margin: 0 0 6px; font-size: 20px; letter-spacing: 1px; }

.lb-info > p {
    margin: 0 0 14px;
    font-size: 14.5px;
    color: var(--ink-soft);
    line-height: 1.8;
}

.lb-meta {
    margin: 0;
    padding: 14px 18px;
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 10px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px 18px;
}

.lb-meta dt { font-size: 12px; color: var(--ink-faint); margin-bottom: 2px; }

.lb-meta dd { margin: 0; font-size: 14px; color: var(--ink); }

.lb-close,
.lb-nav {
    position: absolute;
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, .12);
    color: #fff;
    font-size: 26px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .18s;
}

.lb-close:hover, .lb-nav:hover { background: var(--accent); color: #1c1913; }

.lb-close { top: 18px; right: 22px; }

.lb-nav { top: 50%; transform: translateY(-50%); font-size: 30px; padding-bottom: 4px; }

.lb-prev { left: 18px; }
.lb-next { right: 18px; }

.lb-close:focus-visible,
.lb-nav:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- 页脚 ---------- */
.site-footer {
    background: var(--surface);
    border-top: 1px solid var(--line);
    padding: 26px 0 30px;
    text-align: center;
}

.footer-beian {
    margin: 0;
    font-size: 13px;
    color: var(--ink-faint);
    line-height: 2;
}

.footer-beian a { color: var(--ink-soft); }
.footer-beian a:hover { color: var(--accent); }

.dot { margin: 0 8px; color: #4a4f56; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
    .photo-grid { grid-template-columns: repeat(2, 1fr); }
    .lb-meta { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 620px) {
    .wrap { padding: 0 18px; }
    .hero { padding: 26px 22px; margin-top: 24px; }
    .hero h1 { font-size: 22px; }
    .photo-grid { grid-template-columns: 1fr; gap: 14px; }
    .lightbox { padding: 60px 10px 24px; }
    .lb-nav { width: 38px; height: 38px; }
    .lb-prev { left: 6px; }
    .lb-next { right: 6px; }
    #lb-img { max-height: 48vh; }
    .lb-meta { grid-template-columns: repeat(2, 1fr); padding: 12px 14px; }
}