/* ============================================================
   劉漢文 LIU HAN-WEN — liuhanwen.art
   ============================================================ */

:root{
  --paper:        #F8F5EF;
  --paper-deep:   #F1EDE4;
  --paper-white:  #FCFAF6;
  --ink:          #1C1A17;
  --ink-soft:     #4A453F;
  --ink-mute:     #8B837A;
  --gold:         #9A7B4F;
  --line:         rgba(28,26,23,.14);
  --line-soft:    rgba(28,26,23,.07);

  --serif-en: 'Cormorant Garamond', 'EB Garamond', Georgia, serif;
  --serif-tc: 'Noto Serif TC', 'Source Han Serif TC', 'Songti TC', serif;
  --font: var(--serif-en), var(--serif-tc);

  --pad: clamp(20px, 5vw, 80px);
  --gut: clamp(28px, 4vw, 56px);
  --nav-h: 76px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{ box-sizing:border-box; }

html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }

/* ---------- 共用排版 ---------- */

.en{
  font-family:var(--serif-en);
  letter-spacing:.24em;
  text-transform:uppercase;
  font-size:.72rem;
  color:var(--ink-mute);
}

.section-label{
  display:block;
  text-align:center;
  margin-bottom:.9em;
}

.section-title{
  font-family:var(--serif-tc);
  font-weight:400;
  font-size:clamp(1.35rem,2.4vw,1.9rem);
  letter-spacing:.28em;
  text-indent:.28em;
  text-align:center;
  margin:0 0 clamp(48px,6vw,90px);
}

.wrap{ max-width:1440px; margin:0 auto; padding-inline:var(--pad); }
.wrap-narrow{ max-width:760px; margin:0 auto; padding-inline:var(--pad); }

section{ padding-block:clamp(80px,11vw,170px); }

.rule{ height:1px; background:var(--line-soft); border:0; margin:0; }

/* 出現動畫 */
.reveal{ opacity:0; transform:translateY(22px); transition:opacity 1.1s var(--ease), transform 1.1s var(--ease); }
.reveal.is-in{ opacity:1; transform:none; }
@media (prefers-reduced-motion:reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
  html{ scroll-behavior:auto; }
}

/* 作品影像：單層、窄幅陰影 */
.plate{ position:relative; overflow:hidden; background:var(--paper-deep); }
.plate img{
  width:100%; height:100%; object-fit:cover;
  box-shadow:0 6px 18px rgba(28,26,23,.14);
  transition:transform 1.4s var(--ease);
}
.plate--flat img{ box-shadow:none; }
a:hover .plate img, .work-card:hover .plate img{ transform:scale(1.028); }

/* ---------- 導覽 ---------- */

.nav{
  position:fixed; inset:0 0 auto 0; z-index:60;
  height:var(--nav-h);
  display:flex; align-items:center; justify-content:space-between;
  padding-inline:var(--pad);
  transition:background .5s var(--ease), border-color .5s var(--ease), color .5s var(--ease);
  border-bottom:1px solid transparent;
}
.nav.is-solid{ background:rgba(248,245,239,.94); backdrop-filter:blur(10px); border-bottom-color:var(--line-soft); }
.nav.is-over{ color:var(--paper-white); }
.nav.is-over .nav-link, .nav.is-over .nav-mark small{ color:rgba(252,250,246,.82); }

.nav-mark{ display:flex; align-items:baseline; gap:.7em; }
.nav-mark strong{
  font-family:var(--serif-tc); font-weight:500;
  font-size:1.02rem; letter-spacing:.34em; text-indent:.34em;
}
.nav-mark small{ font-family:var(--serif-en); letter-spacing:.2em; text-transform:uppercase; font-size:.62rem; color:var(--ink-mute); }

.nav-menu{ display:flex; align-items:center; gap:clamp(20px,2.6vw,42px); }
.nav-link{
  position:relative; display:inline-block; text-align:center;
  font-family:var(--serif-tc); font-size:.9rem; letter-spacing:.2em; text-indent:.2em;
  color:var(--ink-soft); padding-block:6px;
}
.nav-link em{
  display:block; font-style:normal;
  font-family:var(--serif-en); font-size:.56rem; letter-spacing:.22em;
  text-transform:uppercase; text-indent:.22em; opacity:.55; margin-top:2px;
}
.nav-link::after{
  content:''; position:absolute; left:50%; bottom:0; width:0; height:1px;
  background:currentColor; opacity:.5; transform:translateX(-50%);
  transition:width .5s var(--ease);
}
.nav-link:hover::after, .nav-link.is-current::after{ width:22px; }

.nav-toggle{ display:none; width:34px; height:34px; position:relative; }
.nav-toggle span{ position:absolute; left:6px; right:6px; height:1px; background:currentColor; transition:transform .4s var(--ease), opacity .3s; }
.nav-toggle span:nth-child(1){ top:13px; }
.nav-toggle span:nth-child(2){ top:20px; }
.is-open .nav-toggle span:nth-child(1){ transform:translateY(3.5px) rotate(45deg); }
.is-open .nav-toggle span:nth-child(2){ transform:translateY(-3.5px) rotate(-45deg); }

@media (max-width:900px){
  .nav-toggle{ display:block; }
  .nav-menu{
    position:fixed; inset:var(--nav-h) 0 auto 0;
    flex-direction:column; gap:26px;
    background:rgba(248,245,239,.985);
    padding:clamp(40px,9vw,70px) var(--pad) clamp(56px,10vw,80px);
    border-bottom:1px solid var(--line-soft);
    transform:translateY(-12px); opacity:0; pointer-events:none;
    transition:opacity .45s var(--ease), transform .45s var(--ease);
  }
  body.is-open .nav-menu{ opacity:1; transform:none; pointer-events:auto; }
  body.is-open{ overflow:hidden; }
  .nav.is-over .nav-menu .nav-link{ color:var(--ink-soft); }
  .nav-link{ font-size:1.05rem; }
}

/* ---------- 首頁 hero ---------- */

.hero{ position:relative; height:100svh; min-height:560px; padding:0; overflow:hidden; }
.hero-media{ position:absolute; inset:0; }
.hero-media img{ width:100%; height:100%; object-fit:cover; }
.hero-media::after{
  content:''; position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(20,18,16,.42) 0%, rgba(20,18,16,.14) 38%, rgba(20,18,16,.5) 100%);
}
.hero-inner{
  position:relative; z-index:2; height:100%;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  text-align:center; color:var(--paper-white); padding-inline:var(--pad);
}
.hero-name{
  font-family:var(--serif-tc); font-weight:400;
  font-size:clamp(2.6rem,7vw,5.2rem);
  letter-spacing:.3em; text-indent:.3em; margin:0;
  text-shadow:0 2px 24px rgba(0,0,0,.28);
}
.hero-en{ margin-top:1.1em; color:rgba(252,250,246,.86); letter-spacing:.42em; font-size:.74rem; }
.hero-sub{
  margin-top:2.6em; font-family:var(--serif-en); font-size:.78rem;
  letter-spacing:.34em; text-transform:uppercase; color:rgba(252,250,246,.72);
}
.hero-enter{
  position:absolute; bottom:clamp(38px,6vh,64px); left:50%; transform:translateX(-50%);
  z-index:2; color:rgba(252,250,246,.9);
  display:flex; flex-direction:column; align-items:center; gap:14px;
  font-family:var(--serif-en); font-size:.68rem; letter-spacing:.3em; text-transform:uppercase;
}
.hero-enter i{ display:block; width:1px; height:52px; background:currentColor; opacity:.5; animation:drop 2.6s var(--ease) infinite; transform-origin:top; }
@keyframes drop{ 0%{transform:scaleY(0);opacity:0} 40%{transform:scaleY(1);opacity:.55} 100%{transform:scaleY(1) translateY(52px);opacity:0} }

/* ---------- 三個系列入口 ---------- */

.series-row{ display:grid; grid-template-columns:repeat(3,1fr); gap:var(--gut); }
.series-card .plate{ aspect-ratio:4/5; }
.series-card h3{
  font-family:var(--serif-tc); font-weight:400;
  font-size:1.2rem; letter-spacing:.34em; text-indent:.34em;
  margin:1.6em 0 .5em; text-align:center;
}
.series-card .en{ display:block; text-align:center; margin-bottom:1.1em; }
.series-card p{ margin:0; text-align:center; color:var(--ink-soft); font-family:var(--serif-tc); font-size:.94rem; letter-spacing:.06em; }
@media (max-width:820px){ .series-row{ grid-template-columns:1fr; gap:clamp(48px,9vw,72px); } }

/* ---------- 語錄 ＋ 工作照 ---------- */

.statement{ background:var(--paper-deep); }
.statement-grid{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(40px,6vw,110px); align-items:center; }
.statement blockquote{
  margin:0; font-family:var(--serif-tc); font-weight:400;
  font-size:clamp(1.4rem,2.6vw,2.1rem); line-height:2.1; letter-spacing:.16em;
}
.statement cite{ display:block; margin-top:2.4em; font-style:normal; }
.statement .plate{ aspect-ratio:4/5; }
@media (max-width:900px){ .statement-grid{ grid-template-columns:1fr; } }

/* ---------- 系列展示（大圖 ＋ 留白） ---------- */

.showcase{ display:grid; grid-template-columns:38% 1fr; gap:clamp(28px,5vw,80px); align-items:center; }
.showcase--flip{ grid-template-columns:1fr 38%; }
.showcase--flip .showcase-text{ order:2; }
.showcase-text .en{ font-size:clamp(1.5rem,4.6vw,3.4rem); letter-spacing:.3em; color:var(--ink); display:block; line-height:1.2; }
.showcase-text h2{
  font-family:var(--serif-tc); font-weight:400; font-size:1.25rem;
  letter-spacing:.32em; text-indent:.32em; margin:.8em 0 1.6em;
}
.showcase-text p{ color:var(--ink-soft); font-family:var(--serif-tc); font-size:.96rem; margin:0 0 2.4em; max-width:34ch; }
.showcase .plate{ aspect-ratio:5/4; }
@media (max-width:900px){
  .showcase, .showcase--flip{ grid-template-columns:1fr; gap:28px; }
  .showcase--flip .showcase-text{ order:0; }
}

/* ---------- 連結／按鈕 ---------- */

.link-line{
  display:inline-flex; align-items:center; gap:.9em;
  font-family:var(--serif-en); font-size:.72rem; letter-spacing:.26em; text-transform:uppercase;
  padding-bottom:6px; border-bottom:1px solid var(--line);
  transition:border-color .4s var(--ease), color .4s var(--ease);
}
.link-line:hover{ border-color:var(--gold); color:var(--gold); }
.link-line span{ transition:transform .4s var(--ease); }
.link-line:hover span{ transform:translateX(5px); }
.center{ text-align:center; }

/* ---------- 展覽 ---------- */

.exh-list{ border-top:1px solid var(--line-soft); }
.exh-item{
  display:grid; grid-template-columns:120px 1fr auto; gap:clamp(16px,3vw,48px);
  align-items:baseline; padding-block:clamp(22px,2.6vw,34px);
  border-bottom:1px solid var(--line-soft);
}
.exh-year{ font-family:var(--serif-en); font-size:1.1rem; letter-spacing:.16em; color:var(--gold); }
.exh-name{ font-family:var(--serif-tc); font-size:1.02rem; letter-spacing:.1em; }
.exh-name em{ display:block; font-style:normal; margin-top:.4em; font-family:var(--serif-en); font-size:.72rem; letter-spacing:.2em; text-transform:uppercase; color:var(--ink-mute); }
.exh-place{ font-family:var(--serif-tc); font-size:.88rem; color:var(--ink-mute); letter-spacing:.1em; }
@media (max-width:720px){
  .exh-item{ grid-template-columns:1fr; gap:8px; }
  .exh-place{ order:3; }
}

/* ---------- 收藏 CTA ---------- */

.collect{ background:var(--paper-deep); text-align:center; }
.collect h2{ font-family:var(--serif-tc); font-weight:400; font-size:clamp(1.3rem,2.4vw,1.8rem); letter-spacing:.32em; text-indent:.32em; margin:.6em 0 1.4em; }
.collect p{ max-width:44ch; margin:0 auto 2.8em; color:var(--ink-soft); font-family:var(--serif-tc); font-size:.96rem; }

/* ---------- 頁尾 ---------- */

.foot{ padding-block:clamp(56px,7vw,90px) 40px; border-top:1px solid var(--line-soft); }
.foot-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:clamp(28px,4vw,60px); }
.foot h4{ font-family:var(--serif-en); font-size:.66rem; letter-spacing:.26em; text-transform:uppercase; color:var(--ink-mute); font-weight:400; margin:0 0 1.6em; }
.foot ul{ list-style:none; margin:0; padding:0; }
.foot li{ margin-bottom:.9em; font-family:var(--serif-tc); font-size:.92rem; letter-spacing:.08em; }
.foot a:hover{ color:var(--gold); }
.foot-mark strong{ font-family:var(--serif-tc); font-weight:400; font-size:1.3rem; letter-spacing:.32em; text-indent:.32em; display:block; }
.foot-mark small{ display:block; margin-top:1em; }
.foot-base{ margin-top:clamp(48px,6vw,80px); padding-top:26px; border-top:1px solid var(--line-soft); display:flex; justify-content:space-between; gap:20px; flex-wrap:wrap; }
.foot-base p{ margin:0; font-family:var(--serif-en); font-size:.66rem; letter-spacing:.18em; color:var(--ink-mute); text-transform:uppercase; }
@media (max-width:760px){ .foot-grid{ grid-template-columns:1fr; gap:44px; } }

/* ---------- 內頁頁首 ---------- */

.page-head{ padding-top:calc(var(--nav-h) + clamp(60px,9vw,120px)); padding-bottom:clamp(40px,5vw,70px); text-align:center; }
.page-head h1{
  font-family:var(--serif-tc); font-weight:400;
  font-size:clamp(1.7rem,3.4vw,2.5rem); letter-spacing:.34em; text-indent:.34em; margin:.5em 0 0;
}
.page-head .lede{ max-width:52ch; margin:2.2em auto 0; color:var(--ink-soft); font-family:var(--serif-tc); font-size:.98rem; }

/* ---------- 作品頁 ---------- */

.filters{ display:flex; flex-wrap:wrap; justify-content:center; gap:clamp(14px,2.4vw,34px); padding-bottom:clamp(40px,5vw,72px); }
.filter{
  font-family:var(--serif-tc); font-size:.92rem; letter-spacing:.2em; text-indent:.2em;
  color:var(--ink-mute); padding-bottom:6px; border-bottom:1px solid transparent;
  transition:color .35s var(--ease), border-color .35s var(--ease);
}
.filter em{ font-style:normal; font-family:var(--serif-en); font-size:.6rem; letter-spacing:.2em; text-transform:uppercase; margin-left:.7em; }
.filter:hover{ color:var(--ink); }
.filter.is-active{ color:var(--ink); border-bottom-color:var(--gold); }

.grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:var(--gut) clamp(24px,3vw,48px); padding-bottom:clamp(80px,10vw,150px); }
@media (max-width:1000px){ .grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:620px){ .grid{ grid-template-columns:1fr; } }

.work-card{ display:block; cursor:pointer; text-align:left; width:100%; }
.work-card .plate{ aspect-ratio:4/5; background:var(--paper-deep); }
.work-card figcaption{ padding-top:1.5em; }
.work-title{ font-family:var(--serif-tc); font-size:1.02rem; letter-spacing:.14em; margin:0 0 .5em; font-weight:400; }
.work-meta{ margin:0; font-family:var(--serif-en); font-size:.72rem; letter-spacing:.16em; color:var(--ink-mute); }
.work-meta span{ margin-right:1em; }
.badge{
  display:inline-block; margin-top:1em;
  font-family:var(--serif-en); font-size:.6rem; letter-spacing:.22em; text-transform:uppercase;
  color:var(--gold); border:1px solid rgba(154,123,79,.4); padding:.35em 1em;
}
.badge--sold{ color:var(--ink-mute); border-color:var(--line); }

/* ---------- 單幅作品檢視 ---------- */

.viewer{
  position:fixed; inset:0; z-index:80; background:var(--paper);
  display:grid; grid-template-columns:1fr 380px;
  opacity:0; pointer-events:none; transition:opacity .55s var(--ease);
}
.viewer.is-open{ opacity:1; pointer-events:auto; }
.viewer-stage{
  display:flex; align-items:center; justify-content:center;
  padding:clamp(60px,7vw,110px) clamp(28px,5vw,90px);
  background:var(--paper-deep);
}
.viewer-stage img{
  max-width:100%; max-height:calc(100svh - 140px); width:auto; height:auto;
  object-fit:contain; box-shadow:0 8px 22px rgba(28,26,23,.16);
}
.viewer-side{
  padding:clamp(70px,8vw,110px) clamp(28px,3vw,52px) 40px;
  display:flex; flex-direction:column; overflow-y:auto;
}
.viewer-side h2{ font-family:var(--serif-tc); font-weight:400; font-size:1.6rem; letter-spacing:.24em; text-indent:.24em; margin:0 0 .3em; }
.viewer-side .en{ display:block; margin-bottom:2.4em; }
.viewer-spec{ margin:0 0 2.6em; }
.viewer-spec div{ display:flex; gap:1.4em; padding-block:.6em; border-bottom:1px solid var(--line-soft); font-size:.86rem; }
.viewer-spec dt{ font-family:var(--serif-en); letter-spacing:.2em; text-transform:uppercase; font-size:.62rem; color:var(--ink-mute); width:74px; flex:none; padding-top:.35em; }
.viewer-spec dd{ margin:0; font-family:var(--serif-tc); letter-spacing:.08em; }
.viewer-note{ font-family:var(--serif-tc); font-size:.94rem; color:var(--ink-soft); line-height:2.1; margin:0 0 2.6em; padding-left:1.2em; border-left:1px solid var(--line); }
.viewer-nav{ margin-top:auto; padding-top:2.4em; display:flex; justify-content:space-between; gap:16px; border-top:1px solid var(--line-soft); }
.viewer-nav button{ font-family:var(--serif-en); font-size:.68rem; letter-spacing:.24em; text-transform:uppercase; color:var(--ink-mute); transition:color .35s var(--ease); }
.viewer-nav button:hover{ color:var(--ink); }
.viewer-nav button[disabled]{ opacity:.28; cursor:default; }
.viewer-close{
  position:fixed; top:24px; right:var(--pad); z-index:90;
  width:42px; height:42px; display:grid; place-items:center;
  font-family:var(--serif-en); font-size:1.1rem; color:var(--ink-soft);
  transition:transform .4s var(--ease);
}
.viewer-close:hover{ transform:rotate(90deg); }
@media (max-width:900px){
  .viewer{ grid-template-columns:1fr; grid-template-rows:auto 1fr; overflow-y:auto; }
  .viewer-stage{ padding:calc(var(--nav-h) + 20px) 20px 28px; }
  .viewer-stage img{ max-height:56svh; }
  .viewer-side{ padding:34px var(--pad) 60px; }
  .viewer-nav{ margin-top:44px; }
}

/* ---------- 畫家頁 ---------- */

.about-grid{ display:grid; grid-template-columns:1fr 1.1fr; gap:clamp(40px,6vw,110px); align-items:start; }
.about-grid .plate{ aspect-ratio:4/5; position:sticky; top:calc(var(--nav-h) + 40px); }
.about-body h3{
  font-family:var(--serif-tc); font-weight:400; font-size:1.05rem;
  letter-spacing:.28em; text-indent:.28em; margin:3.2em 0 1.2em;
  padding-bottom:.8em; border-bottom:1px solid var(--line-soft);
}
.about-body h3:first-child{ margin-top:0; }
.about-body p{ font-family:var(--serif-tc); font-size:.98rem; color:var(--ink-soft); margin:0 0 1.5em; }
.about-body ul{ list-style:none; margin:0; padding:0; }
.about-body li{ font-family:var(--serif-tc); font-size:.94rem; color:var(--ink-soft); padding-block:.55em; letter-spacing:.06em; }
.about-body li b{ font-weight:400; color:var(--gold); font-family:var(--serif-en); margin-right:1.2em; letter-spacing:.14em; }
@media (max-width:900px){
  .about-grid{ grid-template-columns:1fr; }
  .about-grid .plate{ position:static; }
}

.pull{
  font-family:var(--serif-tc); font-weight:400;
  font-size:clamp(1.25rem,2.2vw,1.7rem); line-height:2.2; letter-spacing:.16em;
  margin:0; text-align:center;
}

/* ---------- 創作理念 ---------- */

.idea{ display:grid; grid-template-columns:1fr 1.2fr; gap:clamp(30px,5vw,90px); align-items:center; padding-block:clamp(60px,8vw,120px); border-bottom:1px solid var(--line-soft); }
.idea:last-child{ border-bottom:0; }
.idea--flip .idea-text{ order:2; }
.idea-num{ font-family:var(--serif-en); font-size:.7rem; letter-spacing:.3em; color:var(--gold); display:block; margin-bottom:1.8em; }
.idea-text h2{ font-family:var(--serif-tc); font-weight:400; font-size:clamp(1.6rem,3vw,2.2rem); letter-spacing:.36em; text-indent:.36em; margin:0 0 .5em; }
.idea-text .en{ display:block; margin-bottom:2em; }
.idea-text p{ font-family:var(--serif-tc); font-size:.98rem; color:var(--ink-soft); margin:0 0 1.4em; max-width:40ch; }
.idea .plate{ aspect-ratio:1/1; }
@media (max-width:900px){
  .idea, .idea--flip{ grid-template-columns:1fr; }
  .idea--flip .idea-text{ order:0; }
}

/* ---------- 聯絡 ---------- */

.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(40px,6vw,110px); align-items:start; }
.contact-block{ margin-bottom:3.4em; }
.contact-block h3{ font-family:var(--serif-en); font-size:.66rem; letter-spacing:.26em; text-transform:uppercase; color:var(--ink-mute); font-weight:400; margin:0 0 1.2em; }
.contact-block p{ margin:0 0 .5em; font-family:var(--serif-tc); font-size:1.02rem; letter-spacing:.08em; }
.contact-block a{ border-bottom:1px solid var(--line); padding-bottom:2px; transition:border-color .4s var(--ease), color .4s var(--ease); }
.contact-block a:hover{ color:var(--gold); border-color:var(--gold); }
.contact-grid .plate{ aspect-ratio:4/5; }
@media (max-width:900px){ .contact-grid{ grid-template-columns:1fr; } }

/* ---------- 音樂鍵 ---------- */

.music{
  position:fixed; right:calc(var(--pad) - 4px); bottom:26px; z-index:70;
  width:44px; height:44px; border-radius:50%;
  display:grid; place-items:center;
  background:rgba(248,245,239,.86); border:1px solid var(--line-soft);
  backdrop-filter:blur(8px);
  font-size:.9rem; color:var(--ink-soft);
  transition:color .4s var(--ease), border-color .4s var(--ease);
}
.music:hover{ color:var(--gold); border-color:rgba(154,123,79,.4); }
.music.is-playing{ color:var(--gold); }