/* JapaneseSmileyFace.com — light + dark theme */
:root{
  --bg:#f6f6fb; --surface:#ffffff; --surface-2:#f0f0f8; --border:#e3e3ee;
  --text:#1c1d2b; --muted:#5d6075; --accent:#4f46e5; --accent-2:#ec4899;
  --accent-soft:#eceafe; --on-accent:#ffffff; --ok:#059669;
  --shadow:0 1px 2px rgba(20,20,50,.06),0 4px 14px rgba(20,20,50,.06);
  --radius:14px; --maxw:1180px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0e0f16; --surface:#171925; --surface-2:#1f2230; --border:#2b2f41;
    --text:#e9eaf3; --muted:#a0a4bb; --accent:#8b8cff; --accent-2:#f472b6;
    --accent-soft:#25264a; --on-accent:#0e0f16; --ok:#34d399;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 6px 18px rgba(0,0,0,.35);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0e0f16; --surface:#171925; --surface-2:#1f2230; --border:#2b2f41;
  --text:#e9eaf3; --muted:#a0a4bb; --accent:#8b8cff; --accent-2:#f472b6;
  --accent-soft:#25264a; --on-accent:#0e0f16; --ok:#34d399;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 6px 18px rgba(0,0,0,.35);
  color-scheme:dark;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);
  font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Hiragino Sans","Noto Sans JP","Noto Sans CJK JP","Yu Gothic",sans-serif;
  overflow-x:hidden}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;border-radius:10px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 16px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:var(--accent);color:var(--on-accent);padding:8px 12px;border-radius:8px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

/* header */
.site-header{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--surface) 88%,transparent);
  backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--border)}
.bar{display:flex;align-items:center;gap:12px;height:62px}
.logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:18px;color:var(--text);white-space:nowrap}
.logo:hover{text-decoration:none}
.logo-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;font-size:20px}
.logo b{color:var(--accent)}
.nav{display:flex;gap:4px;margin-left:8px}
.nav a{color:var(--muted);padding:8px 10px;border-radius:9px;font-weight:600;font-size:15px}
.nav a:hover,.nav a[aria-current="page"]{background:var(--accent-soft);color:var(--accent);text-decoration:none}
.bar-actions{margin-left:auto;display:flex;align-items:center;gap:6px}
.icon-btn{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
  background:var(--surface);color:var(--text);cursor:pointer;font-size:18px}
.icon-btn:hover{border-color:var(--accent);color:var(--accent)}
.icon-btn svg{width:20px;height:20px}
.theme-dark-icon{display:none}
:root[data-theme="dark"] .theme-dark-icon{display:inline}
:root[data-theme="dark"] .theme-light-icon{display:none}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]) .theme-dark-icon{display:inline}
  :root:not([data-theme="light"]) .theme-light-icon{display:none}
}

/* mega menu */
.menu{position:relative}
.menu>summary{list-style:none}
.menu>summary::-webkit-details-marker{display:none}
.menu-panel{position:fixed;left:0;right:0;top:62px;max-height:calc(100vh - 62px);overflow:auto;background:var(--surface);
  border-bottom:1px solid var(--border);box-shadow:var(--shadow);padding:20px 0 28px}
.menu-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:18px 24px}
.menu-grid h3{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:0 0 6px}
.menu-grid a{display:block;padding:4px 0;color:var(--text);font-size:15px}
.menu-grid a:hover{color:var(--accent)}

/* breadcrumb + hero */
.crumbs{font-size:14px;color:var(--muted);margin:16px 0 0}
.crumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li+li::before{content:"›";margin-right:6px;color:var(--muted)}
.crumbs a{color:var(--muted)}
.hero{padding:18px 0 8px}
.hero h1{font-size:clamp(26px,4.4vw,40px);line-height:1.2;margin:6px 0 8px;letter-spacing:-.01em}
.hero .lead{color:var(--muted);font-size:17px;max-width:820px;margin:0}
.hero-home{text-align:center;padding:34px 0 10px}
.hero-home .lead{margin:0 auto}
.hero-faces{font-size:28px;letter-spacing:.2em;margin:0 0 6px;color:var(--accent)}
.stats{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 0}
.hero-home .stats{justify-content:center}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:999px;padding:4px 12px;font-size:14px;color:var(--muted)}
.stat b{color:var(--text)}

/* toolbar */
.toolbar{position:sticky;top:62px;z-index:30;background:var(--bg);padding:12px 0;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.search{flex:1 1 260px;position:relative;display:block}
.search input{width:100%;height:46px;border-radius:12px;border:1px solid var(--border);background:var(--surface);color:var(--text);
  padding:0 14px 0 42px;font-size:16px;box-shadow:var(--shadow)}
.search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.search svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:20px;height:20px;color:var(--muted);pointer-events:none}
.hero-home .search{max-width:620px;margin:18px auto 0}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.hero-home .chip-row{justify-content:center;margin-top:14px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;background:var(--surface);border:1px solid var(--border);
  color:var(--text);font-size:14px;font-weight:600}
.chip:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
.chip .ico{font-weight:400;color:var(--accent)}

/* recent */
.recent{display:none;align-items:center;gap:8px;overflow-x:auto;padding:4px 0 10px;scrollbar-width:thin}
.recent.show{display:flex}
.recent-label{font-size:13px;color:var(--muted);white-space:nowrap;font-weight:600}
.recent button{flex:none;border:1px dashed var(--border);background:var(--surface);color:var(--text);border-radius:9px;padding:4px 10px;cursor:pointer;font:inherit;font-size:15px;white-space:nowrap}
.recent button:hover{border-color:var(--accent)}
.recent .clear{border-style:solid;color:var(--muted);font-size:13px}

/* grids */
.section{margin:18px 0 28px}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:0 0 10px}
.section h2{font-size:21px;margin:0}
.section .count{color:var(--muted);font-size:14px;white-space:nowrap}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.grid.chars{grid-template-columns:repeat(auto-fill,minmax(88px,1fr))}
.grid.wide{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
.k{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-height:64px;padding:10px 8px;
  border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text);cursor:pointer;
  font:inherit;font-size:19px;line-height:1.35;text-align:center;word-break:break-word;box-shadow:var(--shadow);
  transition:transform .12s ease,border-color .12s ease,background .12s ease}
.chars .k{font-size:30px;min-height:78px}
.k small{font-size:11px;line-height:1.3;color:var(--muted);font-family:system-ui,sans-serif}
.k:hover{transform:translateY(-2px);border-color:var(--accent)}
.k:active{transform:translateY(0)}
.k.copied{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 10%,var(--surface))}
.k.copied::after{content:"Copied!";position:absolute;top:-10px;right:8px;background:var(--ok);color:#fff;font-size:11px;font-weight:700;
  padding:1px 8px;border-radius:999px;font-family:system-ui,sans-serif}
.k[hidden],.section[hidden]{display:none}
.no-results{display:none;text-align:center;color:var(--muted);padding:30px 0}
.no-results.show{display:block}

/* category cards */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}
.card{display:flex;flex-direction:column;gap:4px;padding:16px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);
  color:var(--text);box-shadow:var(--shadow);transition:transform .12s ease,border-color .12s ease}
.card:hover{transform:translateY(-2px);border-color:var(--accent);text-decoration:none}
.card .face{font-size:21px;color:var(--accent);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card strong{font-size:16px}
.card span.n{font-size:13px;color:var(--muted)}
.group-title{font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:26px 0 10px}

/* article */
.content{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;align-items:start;margin:30px 0}
.article{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px clamp(16px,3vw,32px);box-shadow:var(--shadow);min-width:0}
.article h2{font-size:22px;line-height:1.3;margin:26px 0 8px}
.article h2:first-child{margin-top:0}
.article h3{font-size:18px;margin:20px 0 6px}
.article p{margin:0 0 12px}
.article img{display:block;margin:14px auto}
.table-wrap{overflow-x:auto;margin:12px 0}
.table-wrap table{border-collapse:collapse;width:100%;font-size:15px}
.table-wrap td,.table-wrap th{border:1px solid var(--border);padding:6px 10px;text-align:left}
.table-wrap tr:nth-child(even){background:var(--surface-2)}
.faq details{border:1px solid var(--border);border-radius:12px;padding:0 14px;margin:0 0 8px;background:var(--surface-2)}
.faq summary{cursor:pointer;font-weight:700;padding:12px 0}
.faq details p{margin:0 0 12px}
.aside{display:flex;flex-direction:column;gap:14px}
.box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.box h2,.box h3{font-size:15px;margin:0 0 10px}
.box ul{list-style:none;margin:0;padding:0}
.box li a{display:flex;justify-content:space-between;gap:8px;padding:6px 0;color:var(--text);border-bottom:1px solid var(--border);font-size:15px}
.box li:last-child a{border-bottom:0}
.box li a span{color:var(--accent);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:45%}
.box li a:hover{color:var(--accent);text-decoration:none}
.steps{counter-reset:s;list-style:none;padding:0;margin:0 0 12px}
.steps li{counter-increment:s;position:relative;padding-left:36px;margin:0 0 10px}
.steps li::before{content:counter(s);position:absolute;left:0;top:1px;width:24px;height:24px;border-radius:50%;background:var(--accent-soft);
  color:var(--accent);font-weight:800;font-size:13px;display:grid;place-items:center}

.related{margin:10px 0 30px}
.related h2{font-size:20px;margin:0 0 12px}
.ad{margin:18px 0;min-height:0;text-align:center;overflow:hidden}
ins.adsbygoogle[data-ad-status="unfilled"]{display:none!important}

/* footer */
.site-footer{margin-top:40px;border-top:1px solid var(--border);background:var(--surface);padding:30px 0 20px;font-size:15px}
.foot-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:20px 28px}
.foot-grid h3{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:0 0 8px}
.foot-grid a{display:block;color:var(--text);padding:3px 0}
.foot-grid a:hover{color:var(--accent)}
.foot-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;border-top:1px solid var(--border);margin-top:24px;padding-top:16px;color:var(--muted);font-size:14px}
.foot-bottom a{color:var(--muted)}

/* toast + top */
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,30px);opacity:0;pointer-events:none;background:var(--text);color:var(--bg);
  padding:10px 18px;border-radius:999px;font-weight:600;box-shadow:var(--shadow);transition:.2s ease;z-index:60;max-width:calc(100vw - 32px);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.toast.show{opacity:1;transform:translate(-50%,0)}
.to-top{position:fixed;right:16px;bottom:16px;z-index:50;opacity:0;pointer-events:none;transition:.2s}
.to-top.show{opacity:1;pointer-events:auto}

.legal{max-width:860px}
.page-404{text-align:center;padding:60px 0}
.page-404 .big{font-size:56px;color:var(--accent)}

@media (max-width:960px){
  .content{grid-template-columns:1fr}

  .nav{display:none}
}
@media (max-width:520px){
  .logo span.full{display:none}
  .grid{grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:8px}
  .grid.chars{grid-template-columns:repeat(auto-fill,minmax(68px,1fr))}
  .grid.wide{grid-template-columns:1fr 1fr}
  .k{font-size:17px}
  .chars .k{font-size:26px;min-height:66px}
  .toolbar{top:62px}
  .hero-home{padding-top:22px}
  .hero-home .chip-row,.related .chip-row{flex-wrap:nowrap;overflow-x:auto;justify-content:flex-start;padding-bottom:6px;margin-left:-16px;margin-right:-16px;padding-left:16px;padding-right:16px;scrollbar-width:none}
  .hero-home .chip-row::-webkit-scrollbar,.related .chip-row::-webkit-scrollbar{display:none}
  .chip{flex:none}
  .hero-home .stats{display:none}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}