/* ============================================================
   徳田尚生 ポートフォリオ — 制作の台帳
   tokens: DESIGN.md / 出典: design-sources.md
   ============================================================ */
:root{
  --paper:#f4f4f1; --white:#ffffff; --ink:#101010; --ink2:#5f5f5a; --ink3:#8a8a84;
  --line:#dcdcd6; --line2:#ececE8; --acc:#1a5cff; --acc-soft:#e8eeff; --dark:#151515; --dark2:#1f1f1f;
  --sans:"Inter","Zen Kaku Gothic New",system-ui,-apple-system,"Segoe UI","Hiragino Sans","Noto Sans JP",sans-serif;
  --jp:"Zen Kaku Gothic New","Inter",system-ui,"Hiragino Sans","Noto Sans JP",sans-serif;
  --serif:"Instrument Serif","Times New Roman",Georgia,serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --max:1280px; --gutter:clamp(20px,4vw,48px);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--jp);font-size:15px;line-height:1.85;letter-spacing:.01em;font-feature-settings:"palt" 1;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
::selection{background:var(--acc);color:#fff}
.en{font-family:var(--sans)}
.num{font-family:var(--sans);font-variant-numeric:tabular-nums}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.label{font-family:var(--sans);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink3);font-weight:500}
.label b{color:var(--ink);font-weight:500}
em{font-family:var(--serif);font-style:italic;font-weight:400;letter-spacing:0}

/* reveal（④ モーション: 下から静かに） */
.rv{opacity:0;transform:translateY(22px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.08s}.rv.d2{transition-delay:.16s}.rv.d3{transition-delay:.24s}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* ---------- header ---------- */
.top{position:sticky;top:0;z-index:50;background:rgba(244,244,241,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line2)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:baseline;gap:12px}
.brand b{font-weight:700;font-size:15px;letter-spacing:.06em}
.brand span{font-family:var(--sans);font-size:11px;letter-spacing:.14em;color:var(--ink3)}
.nav{display:flex;gap:26px;align-items:center}
.nav a{font-family:var(--sans);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink2);position:relative;padding:4px 0}
.nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--ink);transition:width .4s var(--ease)}
.nav a:hover::after{width:100%}
.nav a.x{color:var(--ink);border:1px solid var(--line);border-radius:999px;padding:6px 12px;line-height:1}
.nav a.x::after{display:none}
.nav a.x:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
@media (max-width:640px){.nav{gap:16px}.nav a:not(.x){display:none}}

/* ---------- hero ---------- */
.hero{padding:clamp(72px,11vw,150px) 0 clamp(56px,7vw,96px)}
.hero .eyebrow{display:flex;gap:18px;align-items:center;margin-bottom:28px}
.hero .eyebrow i{display:inline-block;width:32px;height:1px;background:var(--ink)}
h1{font-family:var(--jp);font-weight:500;font-size:clamp(30px,4.6vw,60px);line-height:1.38;letter-spacing:.02em;margin:0 0 30px;max-width:22em}
h1 em{font-size:1.14em;color:var(--ink)}
.lead{max-width:640px;color:var(--ink2);font-size:15.5px;margin:0 0 54px}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{padding:22px 0;border-right:1px solid var(--line);padding-right:18px;margin-right:18px}
.stat:last-child{border-right:0;margin-right:0}
.stat .v{font-family:var(--sans);font-size:clamp(28px,3.4vw,42px);font-weight:500;line-height:1;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.stat .v small{font-size:.5em;color:var(--ink3);margin-left:4px;font-weight:400}
.stat .k{margin-top:10px;font-size:12px;color:var(--ink2);letter-spacing:.06em}
@media (max-width:760px){.stats{grid-template-columns:repeat(2,1fr)}.stat:nth-child(2){border-right:0}.stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}}

/* ---------- section head ---------- */
.sec{padding:clamp(80px,10vw,150px) 0 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.sec-head h2{margin:0;font-weight:500;font-size:clamp(24px,2.8vw,34px);letter-spacing:.03em;line-height:1.3}
.sec-head h2 small{display:block;font-family:var(--sans);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink3);margin-bottom:10px;font-weight:500}
.sec-head p{margin:0;color:var(--ink2);font-size:13.5px;max-width:520px}

/* ---------- work index（① 骨格: 索引表） ---------- */
.filters{display:flex;gap:6px;flex-wrap:wrap}
.filters button{font-family:var(--sans);font-size:11.5px;letter-spacing:.08em;padding:7px 12px;border:1px solid var(--line);border-radius:999px;color:var(--ink2);background:transparent;transition:all .25s var(--ease)}
.filters button:hover{border-color:var(--ink);color:var(--ink)}
.filters button.on{background:var(--ink);border-color:var(--ink);color:#fff}
.filters button i{font-style:normal;opacity:.55;margin-left:6px;font-variant-numeric:tabular-nums}
.work-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(24px,4vw,56px);align-items:start}
.index{border-top:1px solid var(--ink)}
.index .head{display:grid;grid-template-columns:52px minmax(0,1fr) 72px 150px 44px 78px;gap:12px;padding:10px 0;font-family:var(--sans);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink3);border-bottom:1px solid var(--line)}
.row{display:grid;grid-template-columns:52px minmax(0,1fr) 72px 150px 44px 78px;gap:12px;align-items:center;width:100%;text-align:left;padding:14px 0;border-bottom:1px solid var(--line);transition:background .25s var(--ease),padding .25s var(--ease);position:relative}
.row .meta{display:none}
.row:hover,.row.cur{background:var(--white);padding-left:10px;padding-right:10px;margin:0 -10px;width:calc(100% + 20px)}
.row .no{font-family:var(--mono);font-size:12px;color:var(--ink3);font-variant-numeric:tabular-nums}
.row.cur .no,.row:hover .no{color:var(--acc)}
.row .ttl{min-width:0}
.row .ttl b{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-weight:500;font-size:14px;letter-spacing:.02em;line-height:1.45}
.row .ttl small{display:block;font-size:11.5px;color:var(--ink3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}
.row .type,.row .role,.row .year{font-family:var(--sans);font-size:12px;color:var(--ink2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row .role{font-size:11.5px;color:var(--ink3);letter-spacing:.02em}
.row .year{font-variant-numeric:tabular-nums}
.st{display:inline-flex;align-items:center;gap:6px;font-family:var(--sans);font-size:10.5px;letter-spacing:.06em;color:var(--ink2);white-space:nowrap}
.st::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ink3)}
.st.live::before,.st.running::before,.st.oss::before,.st.sold::before{background:var(--acc)}
.st.wip::before{background:transparent;border:1px solid var(--ink3)}
.st.members::before,.st.proposal::before,.st.demo::before{background:#c9c9c2}
.row[hidden]{display:none}
.index .empty{padding:28px 0;color:var(--ink3);font-size:13px}
@media (max-width:1024px){.work-grid{grid-template-columns:1fr}.pane{display:none}}
@media (max-width:760px){
  .index .head{display:none}
  .row{grid-template-columns:44px minmax(0,1fr) auto;grid-template-areas:"no ttl st" "no meta meta";row-gap:4px}
  .row .no{grid-area:no;align-self:start;padding-top:3px}.row .ttl{grid-area:ttl}.row .st{grid-area:st;align-self:start}
  .row .type,.row .role,.row .year{display:none}
  .row .meta{grid-area:meta;display:block;font-family:var(--sans);font-size:11px;color:var(--ink3);letter-spacing:.02em}
  .row:hover,.row.cur{margin:0;width:100%;padding-left:0;padding-right:0}
}

/* ---------- preview pane（⑥ 主役: ブラウザ枠 / ★ ライブ） ---------- */
.pane{position:sticky;top:84px}
.browser{background:var(--white);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.browser .bar{display:flex;align-items:center;gap:10px;height:34px;padding:0 12px;border-bottom:1px solid var(--line2);background:#fafaf8}
.browser .bar .dot{width:7px;height:7px;border-radius:50%;background:var(--acc)}
.browser .bar .dot.off{background:#c9c9c2}
.browser .bar .u{font-family:var(--mono);font-size:11px;color:var(--ink3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}
.browser .bar .tag{font-family:var(--sans);font-size:10px;letter-spacing:.1em;color:var(--ink3);text-transform:uppercase}
.screen{position:relative;aspect-ratio:16/10;background:#f0f0ec;overflow:hidden}
.screen img{width:100%;height:100%;object-fit:cover;object-position:top;position:absolute;inset:0;opacity:0;transition:opacity .5s var(--ease)}
.screen img.show{opacity:1}
.screen .ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;padding:28px;text-align:center;color:var(--ink2);font-size:13px;line-height:1.9}
.screen .ph .big{font-family:var(--serif);font-style:italic;font-size:44px;color:var(--ink);line-height:1;margin-bottom:12px;display:block}
.screen .tall{position:absolute;inset:0;display:grid;grid-template-columns:repeat(3,1fr);gap:6px;padding:10px;background:#111}
.screen .tall img{position:static;opacity:1;height:100%;border-radius:4px}
.pane .meta{padding:22px 4px 0}
.pane .meta .k{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:8px}
.pane .meta h3{margin:0 0 8px;font-size:18px;font-weight:500;letter-spacing:.02em;line-height:1.5}
.pane .meta h3 small{display:block;font-size:12px;color:var(--ink3);font-weight:400;margin-top:2px}
.pane .meta p{margin:0 0 14px;font-size:13.5px;color:var(--ink2)}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.chips span{font-family:var(--sans);font-size:11px;letter-spacing:.04em;padding:4px 9px;border:1px solid var(--line);border-radius:6px;color:var(--ink2);background:var(--white)}
.who{font-size:12.5px;color:var(--ink2);border-top:1px solid var(--line);padding-top:12px;margin-bottom:16px;display:grid;grid-template-columns:auto 1fr;gap:4px 14px}
.who dt{font-family:var(--sans);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink3);padding-top:3px}
.who dd{margin:0}
.who dd b{font-weight:500;font-family:var(--sans);letter-spacing:.02em}
.who dd i{font-style:normal;color:var(--ink3);font-size:11.5px;margin-left:6px}
.actions{display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--sans);font-size:12px;letter-spacing:.08em;padding:11px 18px;border-radius:999px;border:1px solid var(--ink);background:var(--ink);color:#fff;transition:all .25s var(--ease)}
.btn:hover{background:var(--acc);border-color:var(--acc)}
.btn.ghost{background:transparent;color:var(--ink)}
.btn.ghost:hover{background:var(--ink);color:#fff}
.btn svg{width:12px;height:12px}
.btn[hidden]{display:none}

/* ---------- modal ---------- */
.modal{position:fixed;inset:0;z-index:100;background:rgba(16,16,16,.72);display:flex;align-items:center;justify-content:center;padding:clamp(10px,2vw,28px);opacity:0;transition:opacity .3s var(--ease)}
.modal.open{opacity:1}
.modal[hidden]{display:none}
.mbox{width:min(1400px,100%);height:min(900px,100%);background:var(--white);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;transform:translateY(12px);transition:transform .4s var(--ease)}
.modal.open .mbox{transform:none}
.mhead{display:flex;align-items:center;gap:14px;padding:12px 16px;border-bottom:1px solid var(--line);background:#fafaf8;flex:0 0 auto}
.mhead .mno{font-family:var(--mono);font-size:12px;color:var(--acc)}
.mhead .mttl{font-weight:500;font-size:14px;letter-spacing:.02em;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mhead .mttl small{color:var(--ink3);font-weight:400;margin-left:10px;font-size:12px}
.mhead .sp{flex:1}
.mhead a,.mhead button.x{font-family:var(--sans);font-size:11.5px;letter-spacing:.08em;padding:8px 14px;border:1px solid var(--line);border-radius:999px;color:var(--ink2);background:var(--white);white-space:nowrap}
.mhead a:hover,.mhead button.x:hover{border-color:var(--ink);color:var(--ink)}
.mbody{flex:1;min-height:0;position:relative;background:#111;overflow:auto}
.mbody iframe{width:100%;height:100%;border:0;display:block;background:#fff}
.mbody .scroll{width:100%;max-width:1100px;margin:0 auto;display:block;background:#fff}
.mbody .fit{width:100%;height:100%;display:flex;align-items:center;justify-content:center;padding:24px}
.mbody .fit img{max-height:100%;width:auto;object-fit:contain}
.mbody video{width:100%;height:100%;object-fit:contain;background:#000}
.mbody .gal{display:grid;gap:12px;padding:20px;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));background:#111}
.mbody .gal.wide{grid-template-columns:repeat(auto-fill,minmax(440px,1fr))}
.mbody .gal img{width:100%;height:auto;border-radius:6px;background:#222}
.mbody .code{background:#0f1115;color:#d7dae0;font-family:var(--mono);font-size:13px;line-height:1.7;padding:28px 32px;margin:0;white-space:pre;overflow:auto;height:100%}
.mbody .code .lang{display:block;color:#6f7787;font-size:11px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:16px;font-family:var(--sans)}
.mbody .split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);height:100%}
.mbody .split > *{min-height:0;overflow:auto}
.mbody .textcard{background:var(--paper);color:var(--ink);height:100%;display:flex;align-items:center;justify-content:center;padding:40px}
.mbody .textcard .in{max-width:640px}
.mbody .textcard .in .big{font-family:var(--serif);font-style:italic;font-size:64px;line-height:1;margin-bottom:24px}
.mbody .textcard .in h4{font-size:20px;font-weight:500;margin:0 0 12px}
.mbody .textcard .in p{color:var(--ink2);margin:0 0 18px}
.loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#888;font-family:var(--sans);font-size:12px;letter-spacing:.12em;pointer-events:none}
@media (max-width:760px){.mbody .split{grid-template-columns:1fr;grid-template-rows:auto auto;height:auto}.mhead .mttl small{display:none}}

/* ---------- AI team（★ シグネチャの説明） ---------- */
.team-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(24px,4vw,56px);align-items:start}
.flow{border:1px solid var(--line);border-radius:12px;background:var(--white);padding:22px 22px 8px}
.flow .node{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;padding:12px 0}
.flow .node .b{font-family:var(--mono);font-size:11px;color:var(--ink3);padding-top:4px;min-width:34px}
.flow .node b{display:block;font-weight:500;font-size:14.5px}
.flow .node span{display:block;font-size:12.5px;color:var(--ink2)}
.flow .arrow{height:26px;margin-left:16px;border-left:1px solid var(--line);position:relative}
.flow .arrow::after{content:"";position:absolute;left:-3px;bottom:0;width:5px;height:5px;border-right:1px solid var(--ink3);border-bottom:1px solid var(--ink3);transform:rotate(45deg)}
.roles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.role-card{border:1px solid var(--line);border-radius:10px;background:var(--white);padding:14px 16px;display:grid;grid-template-columns:1fr auto;gap:4px 12px;align-items:start;transition:border-color .25s var(--ease)}
.role-card:hover{border-color:var(--ink)}
.role-card b{font-family:var(--sans);font-weight:500;font-size:13px;letter-spacing:.02em}
.role-card .cnt{font-family:var(--sans);font-variant-numeric:tabular-nums;font-size:20px;line-height:1;color:var(--acc);grid-row:span 2}
.role-card .cnt small{font-size:10px;color:var(--ink3);margin-left:3px}
.role-card span{font-size:11.5px;color:var(--ink3)}
.role-card em.d{font-family:var(--sans);font-style:normal;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink3);display:block;margin-bottom:2px}
@media (max-width:1024px){.team-grid{grid-template-columns:1fr}}
@media (max-width:520px){.roles{grid-template-columns:1fr}}

/* ---------- about（⑤ あしらい: ふりがな・括弧の補足） ---------- */
.about-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(24px,4vw,56px);align-items:start}
.profile{display:grid;grid-template-columns:88px 1fr;gap:20px;align-items:start}
.profile img{width:88px;height:88px;border-radius:50%;object-fit:cover;border:1px solid var(--line)}
.profile .nm{font-size:22px;font-weight:500;letter-spacing:.06em;line-height:1.2}
.profile .rb{font-size:11.5px;color:var(--ink3);letter-spacing:.18em;margin-top:4px}
.profile .en{font-family:var(--sans);font-size:12px;color:var(--ink3);letter-spacing:.1em;margin-top:8px}
.profile .ttl{font-size:13px;color:var(--ink2);margin-top:12px}
.bio{margin-top:26px;color:var(--ink2);font-size:14.5px}
.bio p{margin:0 0 14px}
.tl{border-top:1px solid var(--ink);margin:0;padding:0;list-style:none}
.tl li{display:grid;grid-template-columns:72px 1fr;gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.tl li .y{font-family:var(--sans);font-variant-numeric:tabular-nums;font-size:13px;color:var(--ink3);padding-top:2px}
.tl li b{font-weight:500;display:block;font-size:14.5px}
.tl li span{display:block;font-size:12.5px;color:var(--ink2)}
.skills{margin-top:34px}
.skills .grp{display:grid;grid-template-columns:120px 1fr;gap:12px;padding:12px 0;border-bottom:1px solid var(--line2);font-size:13.5px}
.skills .grp .k{font-family:var(--sans);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink3);padding-top:5px}
.skills .grp .v{color:var(--ink2)}
.skills .grp .v b{font-weight:500;color:var(--ink)}
@media (max-width:1024px){.about-grid{grid-template-columns:1fr}}

/* ---------- contact ---------- */
.contact{margin-top:clamp(80px,10vw,150px);background:var(--dark);color:#e9e9e4;padding:clamp(64px,8vw,110px) 0}
.contact .label,.contact .label b{color:#8d8d86}
.contact h2{font-weight:400;font-size:clamp(26px,3.6vw,46px);line-height:1.35;margin:14px 0 22px;letter-spacing:.02em}
.contact h2 em{color:#fff}
.contact p{color:#a9a9a2;max-width:560px;margin:0 0 34px;font-size:14px}
.links{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px;max-width:920px}
.links a{display:grid;grid-template-columns:1fr auto;align-items:center;gap:10px;padding:18px 20px;border:1px solid #333;border-radius:10px;transition:all .25s var(--ease)}
.links a:hover{border-color:#fff;background:#1c1c1c}
.links a b{display:block;font-family:var(--sans);font-weight:500;font-size:14px;letter-spacing:.02em}
.links a span{display:block;font-size:11.5px;color:#8d8d86;margin-top:3px}
.links a svg{width:14px;height:14px;color:#8d8d86}
.foot{background:var(--dark);color:#6f6f69;font-family:var(--sans);font-size:11px;letter-spacing:.1em;padding:22px 0 30px;border-top:1px solid #262626}
.foot .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}