/* ============================================
   牧航 · 视频作品集 — 全局样式
   深色主题 / 紫色强调色 / 极简科技感
   ============================================ */

:root {
  --bg: #0a0a0f;
  --bg-soft: #101018;
  --card: #13131c;
  --border: #23232f;
  --text: #eceaf4;
  --muted: #9b99ae;
  --accent: #8b7ff7;
  --accent-2: #a89dff;
  --accent-soft: rgba(139, 127, 247, 0.12);
  --radius: 14px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", Consolas, "JetBrains Mono", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.mono { font-family: var(--font-mono); }
a { color: inherit; text-decoration: none; }
::selection { background: var(--accent); color: #0a0a0f; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 10, 15, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-size: 20px; font-weight: 700; letter-spacing: 0.02em; }
.logo-dot { color: var(--accent); }
.nav { display: flex; gap: 28px; }
.nav a { color: var(--muted); font-size: 15px; transition: color 0.2s; position: relative; }
.nav a:hover { color: var(--text); }
.nav a.active { color: var(--text); }
.nav a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -22px;
  height: 2px; background: var(--accent);
}

/* ---------- 首页 Hero ---------- */
.hero { padding: 120px 24px 96px; text-align: center; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; top: -220px; left: 50%; transform: translateX(-50%);
  width: 720px; height: 520px; pointer-events: none;
  background: radial-gradient(closest-side, rgba(139, 127, 247, 0.16), transparent);
}
.hero-eyebrow { color: var(--accent); font-size: 13px; letter-spacing: 0.35em; margin-bottom: 20px; }
.hero h1 { font-size: clamp(48px, 8vw, 84px); font-weight: 800; letter-spacing: 0.08em; line-height: 1.1; }
.hero-tag { color: var(--muted); font-size: clamp(16px, 2.4vw, 20px); margin-top: 18px; }
.hero-actions { margin-top: 42px; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block; padding: 12px 30px; border-radius: 10px;
  font-size: 15px; transition: all 0.2s; border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: #0a0a0f; font-weight: 600; }
.btn-primary:hover { background: var(--accent-2); transform: translateY(-2px); }
.btn-ghost { border-color: var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- 区块 ---------- */
.section { padding-top: 72px; padding-bottom: 72px; }
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 32px; padding-bottom: 16px; border-bottom: 1px solid var(--border);
}
.section-head h2 { font-size: 28px; font-weight: 700; }
.section-head .mono { color: var(--muted); font-size: 12px; letter-spacing: 0.25em; }
.section-more { margin-top: 24px; text-align: center; }
.section-more a { color: var(--muted); font-size: 14px; }
.section-more a:hover { color: var(--accent); }

/* ---------- 卡片 ---------- */
.grid { display: grid; gap: 24px; }
.works-grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }

.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
  display: block;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

.cover { aspect-ratio: 16 / 9; display: flex; align-items: center; justify-content: center; }
.cover-1 { background: linear-gradient(135deg, #241a4d, #8b7ff7); }
.cover-2 { background: linear-gradient(135deg, #0d3232, #2dd4bf); }
.cover-3 { background: linear-gradient(135deg, #3a1030, #f472b6); }

.play-icon {
  width: 56px; height: 56px; border-radius: 50%;
  background: rgba(10, 10, 15, 0.55);
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.25s;
}
.play-icon::after {
  content: ""; margin-left: 4px;
  border-left: 16px solid #fff;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
}
.card:hover .play-icon { transform: scale(1.15); }

.card-body { padding: 18px 20px 20px; }
.card-body h3 { font-size: 18px; font-weight: 600; }
.card-meta { color: var(--muted); font-size: 12.5px; margin-top: 6px; letter-spacing: 0.08em; }

/* ---------- 文章卡片 ---------- */
.article-list { display: flex; flex-direction: column; gap: 16px; }
.article-card { padding: 26px 28px; }
.article-card .date { color: var(--accent); font-size: 12.5px; letter-spacing: 0.15em; }
.article-card h3 { font-size: 20px; margin: 8px 0 6px; }
.article-card p { color: var(--muted); font-size: 15px; }

/* ---------- 作品详情页 ---------- */
.work-detail { padding: 64px 24px 40px; }
.back-link { color: var(--muted); font-size: 13px; letter-spacing: 0.1em; }
.back-link:hover { color: var(--accent); }
.work-detail h1 { font-size: clamp(30px, 5vw, 44px); margin: 24px 0 8px; }
.work-meta { color: var(--muted); font-size: 13px; letter-spacing: 0.12em; margin-bottom: 32px; }

.video-wrapper {
  aspect-ratio: 16 / 9; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border); background: #000;
}
.video-wrapper iframe { width: 100%; height: 100%; border: 0; }
.video-note { color: var(--muted); font-size: 13px; margin: 12px 0 40px; }

/* ---------- 正文排版（文章/作品介绍） ---------- */
.prose { max-width: 760px; }
.prose h2 { font-size: 24px; margin: 44px 0 16px; }
.prose p { color: #c9c7d6; margin-bottom: 18px; font-size: 16.5px; }
.prose blockquote {
  border-left: 3px solid var(--accent); padding: 4px 0 4px 20px;
  color: var(--muted); margin: 26px 0; font-style: italic;
}
.prose ul, .prose ol { color: #c9c7d6; margin: 0 0 18px 24px; }
.prose li { margin-bottom: 8px; }
.prose strong { color: var(--text); }

/* ---------- 关于页 ---------- */
.about-hero { padding: 96px 0 32px; }
.about-hero h1 { font-size: clamp(36px, 6vw, 56px); margin-bottom: 20px; }
.tag-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 30px; }
.tag {
  font-size: 13px; color: var(--accent); background: var(--accent-soft);
  border: 1px solid rgba(139, 127, 247, 0.3);
  padding: 6px 16px; border-radius: 999px; font-family: var(--font-mono);
}
.link-list { margin: 36px 0 60px; display: flex; flex-direction: column; gap: 14px; }
.link-list a { color: var(--muted); font-size: 15px; display: flex; gap: 12px; align-items: center; }
.link-list a:hover { color: var(--accent); }
.link-list .mono { color: var(--accent); font-size: 12px; letter-spacing: 0.12em; min-width: 90px; }

/* ---------- 页脚 ---------- */
.site-footer { border-top: 1px solid var(--border); padding: 40px 0; margin-top: 40px; }
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px; color: var(--muted); font-size: 13.5px;
}
.footer-inner .mono { font-size: 12px; letter-spacing: 0.15em; }

/* ---------- 滚动渐显动画 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ============================================
   手机端优化（触屏 / 安全区 / 防穿帮）
   ============================================ */

/* ③ 防灰闪：去掉 iOS 手指点按链接时的灰色闪烁块 */
* { -webkit-tap-highlight-color: transparent; }

/* ⑤ 防横向滚动：任何元素都不许把页面撑出屏幕宽度 */
html, body { overflow-x: hidden; }

/* ① 刘海屏安全区：内容避开刘海圆角（横屏）和底部小横条 */
body {
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}
.site-footer {
  padding-bottom: calc(40px + env(safe-area-inset-bottom));
}

/* ② 触屏交互：没有鼠标的设备上，取消"悬停浮起"，改成"按压反馈" */
@media (hover: none) {
  .card:hover { transform: none; box-shadow: none; border-color: var(--border); }
  .card:hover .play-icon { transform: none; }
  .btn-primary:hover { transform: none; background: var(--accent); }
  .btn-ghost:hover { border-color: var(--border); color: var(--text); }
  .card:active { border-color: var(--accent); }
  .btn:active { opacity: 0.85; transform: scale(0.98); }
}

/* ---------- 手机适配（窄屏） ---------- */
@media (max-width: 640px) {
  .hero { padding: 88px 24px 64px; }
  .section { padding-top: 48px; padding-bottom: 48px; }
  .work-detail { padding: 40px 24px 24px; }

  /* ④ 点击区域：导航/链接加厚到手指好戳的尺寸（≥44px） */
  .nav { gap: 6px; }
  .nav a { padding: 10px 8px; }
  .nav a.active::after { bottom: -8px; }
  .back-link { display: inline-block; padding: 12px 0; }
  .link-list a { padding: 10px 0; }
  .section-more a { display: inline-block; padding: 12px 16px; }

  /* ⑤ 防溢出：宽字距英文小标题在窄屏收紧字距，避免顶出屏幕 */
  .hero-eyebrow { letter-spacing: 0.18em; font-size: 12px; }
  .section-head .mono { letter-spacing: 0.15em; }
}

/* ============================================
   阅读版面：文字页面用"窄画布"居中，两侧留白
   ============================================ */
/* 电脑：文字栏收窄到 780px 并居中，像书页的版心 */
.container-narrow { max-width: 780px; }

/* 手机：文字页面两侧间距加大，不贴边 */
@media (max-width: 640px) {
  .container-narrow { padding-left: 32px; padding-right: 32px; }
}