/* ============================================================
   周雅琪 · Portfolio — 自定义样式
   设计语言：暗色放映厅画布 + 「借光」暖金 + 朱印 + 胶片取景框
   Tailwind 负责布局/间距/响应式；此文件负责签名组件、字体与动效。
   ============================================================ */

:root {
  --ink-900: #0B0B0D;
  --ink-800: #121214;
  --ink-700: #1A1A1E;
  --gold:    #E8B672;
  --gold-hi: #F6DCA9;
  --gold-deep:#C99A55;
  --seal:    #B23A2E;
  --paper:   #ECE8E0;
  --faint:   #9A968D;
}

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--ink-900); }
::-webkit-scrollbar-thumb { background: #2a2a30; border-radius: 20px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold-deep); }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* 数字/英文用 Inter，中文自动回落到黑体/宋体 */
body { text-rendering: optimizeLegibility; -webkit-font-smoothing: antialiased; }

/* ---------- 首屏光影氛围 ---------- */
.hero-glow {
  /* 一束「借来的光」：偏左上暖金径向光晕 */
  background:
    radial-gradient(60% 55% at 22% 30%, rgba(232,182,114,.28), transparent 60%),
    radial-gradient(50% 50% at 85% 85%, rgba(178,58,46,.14), transparent 65%);
}
.hero-vignette {
  background:
    linear-gradient(to top, var(--ink-900) 2%, transparent 42%),
    linear-gradient(to bottom, rgba(11,11,13,.55), transparent 30%),
    radial-gradient(120% 90% at 50% 40%, transparent 55%, rgba(11,11,13,.85));
}

/* 极淡胶片颗粒，增加「放映」质感（弱到几乎无察觉） */
.film-grain {
  opacity: .05; mix-blend-mode: overlay; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 滚动提示 ---------- */
@keyframes scrollcue {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 0; }
  40%  { transform: scaleY(1); transform-origin: top; opacity: 1; }
  60%  { transform: scaleY(1); transform-origin: bottom; opacity: 1; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}
.animate-scrollcue { animation: scrollcue 2.4s ease-in-out infinite; }

/* ---------- 通用按钮 ---------- */
.btn-primary {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .8rem 1.6rem; border-radius: 999px;
  background: var(--gold); color: var(--ink-900);
  font-weight: 600; font-size: .95rem; letter-spacing: .01em;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
  box-shadow: 0 0 0 0 rgba(232,182,114,.5);
}
.btn-primary:hover {
  background: var(--gold-hi);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px -12px rgba(232,182,114,.6);
}
.btn-ghost {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .8rem 1.6rem; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.18); color: var(--paper);
  font-weight: 500; font-size: .95rem;
  transition: border-color .25s ease, color .25s ease, transform .25s ease;
}
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }

/* ---------- 导航 ---------- */
#nav.is-shown { transform: translateY(0); }
#nav.is-shown > div {
  background: rgba(11,11,13,.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.nav-link { position: relative; transition: color .2s ease; }
.nav-link:hover { color: var(--paper); }
.nav-link::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 1px; width: 0;
  background: var(--gold); transition: width .3s ease;
}
.nav-link:hover::after { width: 100%; }

/* ---------- 朱印（签名图形） ---------- */
/* 竖排两字的红色印章，classical painter's seal 的现代转译 */
.seal-mini {
  display: inline-grid; place-items: center;
  width: 2.35em; height: 2.35em; line-height: 1;
  font-family: "Noto Serif SC", serif; font-weight: 900;
  font-size: .78rem; color: #f3e6df;
  text-align: center;
  background:
    radial-gradient(120% 120% at 30% 20%, #c7473a, #a5342a 70%);
  border-radius: 6px;
  box-shadow: inset 0 0 0 1.5px rgba(255,255,255,.25), inset 0 0 10px rgba(0,0,0,.35);
  letter-spacing: -.02em;
}

/* ---------- 区块小标题 ---------- */
.section-eyebrow {
  display: flex; align-items: center; gap: .75rem;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px; text-transform: uppercase;
  letter-spacing: .28em; color: rgba(232,182,114,.85);
}
.section-eyebrow::before {
  content: ""; width: 2rem; height: 1px; background: rgba(232,182,114,.55);
}

/* 关键词下的暖金「涂抹」高光，呼应油画笔触 */
.text-underlight { position: relative; white-space: nowrap; color: var(--paper); }
.text-underlight::after {
  content: ""; position: absolute; left: -.05em; right: -.05em; bottom: .04em; height: .34em; z-index: -1;
  background: linear-gradient(90deg, rgba(232,182,114,.0), rgba(232,182,114,.38) 15%, rgba(232,182,114,.38) 85%, rgba(232,182,114,0));
  border-radius: 2px;
}

/* ---------- 统计数字 ---------- */
.stat { border-left: 1px solid rgba(255,255,255,.12); padding-left: 1rem; }
.stat-num { display: block; font-family: "Noto Serif SC", serif; font-weight: 900; font-size: clamp(2rem, 5vw, 2.8rem); line-height: 1; color: var(--paper); }
.stat-label { display: block; margin-top: .5rem; font-size: .8rem; color: var(--faint); }

/* ---------- 筛选 chip ---------- */
.chip {
  padding: .5rem 1.05rem; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.14);
  font-size: .85rem; color: var(--faint);
  background: transparent; cursor: pointer;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.chip:hover { color: var(--paper); border-color: rgba(255,255,255,.35); }
.chip.is-active { color: var(--ink-900); background: var(--gold); border-color: var(--gold); font-weight: 600; }

/* ============================================================
   签名组件：胶片取景框 Film Frame
   ============================================================ */
.film-frame {
  position: relative; display: block; width: 100%;
  overflow: hidden; border-radius: 12px;
  background: #000; cursor: pointer;
  border: 1px solid rgba(255,255,255,.08);
  transition: transform .5s cubic-bezier(.16,1,.3,1), border-color .4s ease, box-shadow .5s ease;
}
.film-frame:hover {
  border-color: rgba(232,182,114,.55);
  box-shadow: 0 26px 70px -30px rgba(232,182,114,.5), 0 0 0 1px rgba(232,182,114,.25);
}
.film-frame .poster {
  width: 100%; aspect-ratio: 16 / 9; object-fit: cover; display: block;
  transition: transform .8s cubic-bezier(.16,1,.3,1), filter .5s ease;
  filter: saturate(1.02) brightness(.94);
}
.film-frame:hover .poster { transform: scale(1.045); filter: saturate(1.08) brightness(1); }

/* 顶部/底部隐形黑边 + 四角取景刻度 */
.film-frame .frame-ticks { position: absolute; inset: 10px; pointer-events: none; opacity: .0; transition: opacity .4s ease; }
.film-frame:hover .frame-ticks { opacity: .9; }
.frame-ticks span { position: absolute; width: 13px; height: 13px; border: 1.5px solid rgba(246,220,169,.9); }
.frame-ticks span:nth-child(1){ top:0; left:0; border-right:0; border-bottom:0; }
.frame-ticks span:nth-child(2){ top:0; right:0; border-left:0; border-bottom:0; }
.frame-ticks span:nth-child(3){ bottom:0; left:0; border-right:0; border-top:0; }
.frame-ticks span:nth-child(4){ bottom:0; right:0; border-left:0; border-top:0; }

/* 覆盖信息层 */
.film-frame .overlay {
  position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: space-between;
  padding: clamp(.9rem, 2vw, 1.4rem);
  background: linear-gradient(to top, rgba(11,11,13,.9) 4%, rgba(11,11,13,.15) 42%, rgba(11,11,13,.05) 100%);
}
.film-frame .tc {
  align-self: flex-start;
  font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: .06em;
  color: var(--gold-hi);
  background: rgba(11,11,13,.55); border: 1px solid rgba(246,220,169,.3);
  padding: .28rem .55rem; border-radius: 5px; backdrop-filter: blur(4px);
}
.film-frame .cat-tag {
  align-self: flex-start; margin-left: auto;
  font-size: 11px; color: var(--paper); background: rgba(255,255,255,.12);
  padding: .28rem .6rem; border-radius: 999px; border: 1px solid rgba(255,255,255,.14);
  backdrop-filter: blur(4px);
}
.film-frame .meta-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; }
.film-frame .w-title { font-family: "Noto Serif SC", serif; font-weight: 700; font-size: clamp(1.15rem, 2.4vw, 1.6rem); line-height: 1.2; color: #fff; }
.film-frame .w-en { display:block; margin-top: .25rem; font-family:"JetBrains Mono",monospace; font-size: 10.5px; letter-spacing: .18em; text-transform: uppercase; color: var(--faint); }
.film-frame .w-tools { font-family: "JetBrains Mono", monospace; font-size: 10.5px; color: rgba(236,232,224,.75); letter-spacing:.03em; text-align: right; line-height: 1.5; max-width: 45%; }

/* 播放键（光圈意象） */
.play-orb {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%) scale(.85);
  width: 66px; height: 66px; border-radius: 999px;
  display: grid; place-items: center;
  background: rgba(11,11,13,.35); border: 1.5px solid rgba(246,220,169,.85);
  color: var(--gold-hi); backdrop-filter: blur(3px);
  opacity: 0; transition: opacity .4s ease, transform .5s cubic-bezier(.16,1,.3,1), background .3s ease;
}
.film-frame:hover .play-orb { opacity: 1; transform: translate(-50%,-50%) scale(1); }
.film-frame:hover .play-orb { background: rgba(232,182,114,.9); color: var(--ink-900); border-color: var(--gold-hi); }

/* 精选大图差异化 */
.film-frame.is-featured { border-radius: 16px; }
.film-frame.is-featured .poster { aspect-ratio: 21 / 9; }
@media (max-width: 640px){ .film-frame.is-featured .poster { aspect-ratio: 16 / 10; } }
.featured-badge {
  font-family:"JetBrains Mono",monospace; font-size:10px; letter-spacing:.25em; text-transform:uppercase;
  color: var(--gold-hi);
}

/* 隐藏被筛选掉的卡片 */
.work-hidden { display: none !important; }

/* ============================================================
   能力管线 pipeline
   ============================================================ */
.pipe-row { display: grid; grid-template-columns: auto 1fr; gap: 1.5rem 1.75rem; padding: 2rem 0; align-items: start; }
@media (min-width: 768px){ .pipe-row { grid-template-columns: 5.5rem 15rem 1fr; align-items: center; } }
.pipe-idx { font-family:"Noto Serif SC",serif; font-weight:900; font-size: clamp(2rem,5vw,3.2rem); line-height:1; color: rgba(232,182,114,.35); transition: color .4s ease; }
.pipe-row:hover .pipe-idx { color: var(--gold); }
.pipe-name { font-family:"Noto Serif SC",serif; font-weight:700; font-size: 1.25rem; color: var(--paper); }
.pipe-name small { display:block; margin-top:.3rem; font-family:"JetBrains Mono",monospace; font-weight:500; font-size:10.5px; letter-spacing:.16em; text-transform:uppercase; color: var(--faint); }
.pipe-tools { display:flex; flex-wrap:wrap; gap:.5rem; }
.tool-tag { font-size:.8rem; color: rgba(236,232,224,.85); border:1px solid rgba(255,255,255,.14); padding:.32rem .7rem; border-radius:999px; transition: border-color .25s, color .25s; }
.pipe-row:hover .tool-tag { border-color: rgba(232,182,114,.3); }

/* ============================================================
   滚动揭示动效（尊重 prefers-reduced-motion）
   ============================================================ */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s cubic-bezier(.16,1,.3,1), transform .8s cubic-bezier(.16,1,.3,1); transition-delay: var(--d, 0s); }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  .animate-scrollcue { animation: none; }
  .film-frame, .film-frame .poster { transition: none; }
}

/* ---------- 灯箱 ---------- */
#lightbox.is-open { display: flex; }
body.lb-lock { overflow: hidden; }