/* HonsTool — dark theme */
:root{
  --bg:#0a0a0b; --bg2:#101012; --surface:#151518; --surface2:#1d1d21; --line:#2a2a30; --line2:#3a3a42;
  --text:#ededf0; --muted:#9b9ba6; --dim:#6c6c76;
  --accent:#d4ff3a; --accent-ink:#0b0d00; --accent-soft:rgba(212,255,58,.12);
  --danger:#ff6b6b; --ok:#5eead4; --warn:#ffc65c; --info:#7cb8ff;
  --r:14px; --r-sm:10px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","Apple SD Gothic Neo","Malgun Gothic","Noto Sans KR","Hiragino Sans","Yu Gothic UI","Noto Sans JP",Roboto,sans-serif;
  --mono:ui-monospace,"SF Mono","Cascadia Mono",Menlo,Consolas,monospace;
}
*{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 var(--font);word-break:keep-all;overflow-wrap:anywhere}
a{color:inherit}
img,svg,canvas{max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
::selection{background:var(--accent);color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.sr{position:absolute!important;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(--accent-ink);padding:8px 12px;border-radius:8px;z-index:50}
.skip:focus{left:8px}
[hidden]{display:none!important}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
.narrow{max-width:760px}
.muted{color:var(--muted)} .dim{color:var(--dim)}
.mono{font-family:var(--mono)} .tnum{font-variant-numeric:tabular-nums}

/* header */
.top{position:sticky;top:0;z-index:20;background:rgba(10,10,11,.86);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.top-in{display:flex;align-items:center;gap:16px;height:56px}
.logo{font-weight:800;font-size:20px;letter-spacing:-.02em;text-decoration:none}
.logo b{color:var(--accent);font-weight:800}
.top-nav{margin-left:auto;display:flex;gap:14px;font-size:14px}
.top-nav a{text-decoration:none;color:var(--muted)} .top-nav a:hover{color:var(--text)}
.lang{display:flex;align-items:center;gap:4px;font-size:14px}
.lang select{background:transparent;border:1px solid var(--line);border-radius:8px;padding:4px 6px;color:var(--muted)}
.lang select option{background:var(--surface);color:var(--text)}

/* hero + search */
.hero{padding:48px 0 20px}
.hero h1{font-size:clamp(30px,5.4vw,52px);line-height:1.12;letter-spacing:-.035em;margin:0 0 12px}
.hero .lead{color:var(--muted);max-width:640px;margin:0 0 24px;font-size:17px}
.search{position:relative;display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line2);border-radius:16px;padding:0 14px;max-width:640px;transition:border-color .15s}
.search:focus-within{border-color:var(--accent)}
.search input{flex:1;min-width:0;background:transparent;border:0;outline:0;padding:15px 0;font-size:17px}
.search kbd{font:12px var(--mono);color:var(--dim);border:1px solid var(--line2);border-radius:6px;padding:1px 6px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.chips-bottom{margin-top:32px}
.chip{display:inline-flex;align-items:center;gap:4px;padding:6px 12px;border:1px solid var(--line);border-radius:999px;font-size:14px;text-decoration:none;color:var(--muted);background:var(--bg2)}
.chip:hover{color:var(--text);border-color:var(--line2)}

/* category & cards */
.cat{margin:28px 0 8px}
.cat-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:12px}
.cat-head h2{font-size:19px;margin:0;letter-spacing:-.01em}
.cat-head a{font-size:14px;color:var(--muted);text-decoration:none}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:10px}
.card{display:grid;grid-template-columns:40px 1fr;grid-template-rows:auto auto;column-gap:12px;align-items:center;padding:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);text-decoration:none;transition:border-color .15s,transform .15s,background .15s}
.card:hover{border-color:var(--line2);background:var(--surface2);transform:translateY(-1px)}
.card .ic{grid-row:1/3;width:40px;height:40px;display:grid;place-items:center;background:var(--bg2);border:1px solid var(--line);border-radius:10px;font-size:20px}
.card .cn{font-weight:650;font-size:15px;line-height:1.35}
.card .cd{font-size:13px;color:var(--muted);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty{color:var(--muted);text-align:center;padding:40px 0}

/* tool page */
.crumbs{display:flex;gap:8px;font-size:13px;color:var(--dim);padding-top:18px}
.crumbs a{color:var(--muted);text-decoration:none} .crumbs a:hover{color:var(--text)}
.tool-head{padding:10px 0 18px}
.tool-head h1{font-size:clamp(26px,4.2vw,38px);line-height:1.18;letter-spacing:-.03em;margin:0 0 8px}
.tool-head .lead{color:var(--muted);margin:0;max-width:720px}
.tool{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:20px}
@media (min-width:720px){.tool{padding:28px}}
.note{font-size:13px;color:var(--dim);margin:10px 4px 0}
.ad{margin:24px 0;min-height:100px}

/* form */
.row{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end}
.row+.row{margin-top:12px}
.field{display:flex;flex-direction:column;gap:6px;flex:1 1 160px;min-width:0}
.field>span,.lbl{font-size:13px;color:var(--muted);font-weight:500}
.inp,.field input,.field select,.field textarea,select.inp{width:100%;background:var(--bg2);border:1px solid var(--line2);border-radius:var(--r-sm);padding:11px 12px;font-size:16px;outline:0;transition:border-color .15s;min-height:46px}
.field input:focus,.field select:focus,.field textarea:focus,.inp:focus{border-color:var(--accent)}
.field select option,select.inp option{background:var(--surface)}
input[type=date],input[type=time]{color-scheme:dark}
textarea{resize:vertical}
.check{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);cursor:pointer;user-select:none;min-height:32px}
.check input{width:18px;height:18px;accent-color:var(--accent)}
input[type=range]{accent-color:var(--accent);width:100%}
input[type=color]{width:46px;height:46px;padding:2px;border-radius:10px;border:1px solid var(--line2);background:var(--bg2)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;padding:0 16px;border-radius:var(--r-sm);border:1px solid var(--line2);background:var(--surface2);cursor:pointer;font-weight:600;font-size:15px;text-decoration:none;transition:background .15s,border-color .15s,transform .05s;white-space:nowrap}
.btn:hover{border-color:var(--dim)}
.btn:active{transform:scale(.98)}
.btn.pri{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn.pri:hover{filter:brightness(1.06)}
.btn.sm{min-height:34px;padding:0 10px;font-size:13px}
.btn.ghost{background:transparent}
.btn.icon{padding:0;width:44px}
.btns{display:flex;flex-wrap:wrap;gap:8px}

/* segmented tabs */
.seg{display:flex;gap:4px;padding:4px;background:var(--bg2);border:1px solid var(--line);border-radius:12px;margin-bottom:20px;overflow-x:auto;scrollbar-width:none}
.seg::-webkit-scrollbar{display:none}
.seg button{flex:1 0 auto;border:0;background:transparent;padding:9px 14px;border-radius:9px;color:var(--muted);cursor:pointer;font-weight:600;font-size:14px;white-space:nowrap}
.seg button[aria-selected=true]{background:var(--surface2);color:var(--text);box-shadow:inset 0 0 0 1px var(--line2)}
.pane[hidden]{display:none}

/* results */
.result{margin-top:20px;padding:20px;background:var(--bg2);border:1px solid var(--line);border-radius:var(--r)}
.result .big{font-size:clamp(34px,7vw,56px);font-weight:800;letter-spacing:-.03em;line-height:1.1;font-variant-numeric:tabular-nums;color:var(--accent);word-break:break-all}
.result .sub{color:var(--muted);margin-top:6px}
.stats{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px;margin-top:16px}
.stat{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.stat b{display:block;font-size:24px;font-weight:750;font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.25}
.stat span{font-size:13px;color:var(--muted)}
.stat.hl b{color:var(--accent)}
.table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums;font-size:15px}
.table th,.table td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line)}
.table th{color:var(--muted);font-weight:500;font-size:13px}
.table td.r,.table th.r{text-align:right}
.table tr.on td{color:var(--accent)}
.scroll-x{overflow-x:auto}
.err{color:var(--danger);font-size:14px;margin-top:10px}
.hint{font-size:13px;color:var(--dim);margin-top:8px}

/* content */
.content{margin-top:40px;max-width:760px}
.content h2{font-size:21px;letter-spacing:-.02em;margin:36px 0 12px}
.content p,.content li{color:#cfcfd6}
.content ol,.content ul{padding-left:22px}
.content li{margin:6px 0}
.content b,.content strong{color:var(--text)}
.content a{color:var(--accent)}
.content table{margin:12px 0}
.faq details{border:1px solid var(--line);border-radius:12px;background:var(--surface);margin:8px 0}
.faq summary{cursor:pointer;padding:14px 16px;font-weight:600;list-style:none;position:relative;padding-right:40px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:16px;top:12px;color:var(--muted);font-size:20px;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details>div{padding:0 16px 14px;color:#cfcfd6}
.faq details>div p{margin:0 0 8px}
.updated,.credit{font-size:13px;color:var(--dim);margin-top:24px}
.credit a{color:var(--muted)}
.page h1{font-size:32px;letter-spacing:-.03em;margin:8px 0 20px}
.page h2{font-size:19px}
.related{margin:48px 0 24px}

/* footer */
.foot{border-top:1px solid var(--line);margin-top:64px;padding:32px 0 48px;font-size:14px;color:var(--muted)}
.foot nav{display:flex;flex-wrap:wrap;gap:6px 16px;margin-bottom:12px}
.foot a{text-decoration:none;color:var(--muted)} .foot a:hover{color:var(--text)}
.foot-cats a{color:var(--text)}
.foot-note,.foot-copy{font-size:13px;color:var(--dim);margin:6px 0}

/* toast */
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);background:var(--text);color:var(--bg);padding:10px 16px;border-radius:999px;font-weight:600;font-size:14px;opacity:0;pointer-events:none;transition:.2s;z-index:100}
.toast.on{opacity:1;transform:translateX(-50%)}

/* 404 */
.nf{text-align:center;padding:80px 16px}
.nf-code{font-size:96px;font-weight:800;color:var(--accent);margin:0;letter-spacing:-.05em}
.nf a{color:var(--accent)}

/* ── tool-specific ── */
/* calculator */
.calc{max-width:420px;margin:0 auto}
.calc-disp{background:var(--bg2);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;text-align:right;margin-bottom:12px;min-height:110px;display:flex;flex-direction:column;justify-content:flex-end}
.calc-expr{color:var(--muted);font:18px/1.4 var(--mono);min-height:25px;word-break:break-all}
.calc-out{font-size:clamp(34px,9vw,46px);font-weight:750;font-variant-numeric:tabular-nums;letter-spacing:-.02em;word-break:break-all;line-height:1.15}
.calc-keys{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.calc-keys button{min-height:62px;border-radius:14px;border:1px solid var(--line);background:var(--surface2);font-size:22px;font-weight:600;cursor:pointer;transition:background .1s}
.calc-keys button:hover{background:#25252a}
.calc-keys button:active{transform:scale(.97)}
.calc-keys .op{color:var(--accent)}
.calc-keys .fn{color:var(--muted);font-size:18px}
.calc-keys .eq{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);grid-column:span 2}
.calc-hist{margin-top:16px;font:14px var(--mono);color:var(--muted)}
.calc-hist button{display:block;width:100%;text-align:right;background:none;border:0;padding:4px 0;cursor:pointer;color:inherit;font:inherit}
.calc-hist button:hover{color:var(--text)}

/* clocks / weather */
.clocks{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;margin-top:16px}
.clock{position:relative;background:var(--bg2);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px}
.clock .cname{font-weight:650}
.clock .ctime{font-size:34px;font-weight:750;font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.2;margin:4px 0}
.clock .cmeta{font-size:13px;color:var(--muted)}
.clock .x{position:absolute;right:8px;top:8px;width:28px;height:28px;border:0;background:transparent;color:var(--dim);cursor:pointer;border-radius:8px;font-size:16px}
.clock .x:hover{background:var(--surface2);color:var(--text)}
.clock.night{background:#0d0f17}
.clock.here{border-color:var(--accent)}
.wx-now{display:flex;flex-wrap:wrap;align-items:center;gap:8px 24px}
.wx-now .wx-ic{font-size:64px;line-height:1}
.wx-now .wx-t{font-size:clamp(48px,10vw,72px);font-weight:800;letter-spacing:-.04em;line-height:1}
.hours{display:flex;gap:6px;overflow-x:auto;padding-bottom:6px;margin-top:16px}
.hour{flex:0 0 72px;white-space:nowrap;text-align:center;background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:8px 4px;font-size:13px}
.hour b{display:block;font-size:15px}
.hour .e{font-size:22px;display:block;margin:2px 0}
.days{margin-top:12px}
.day{display:grid;grid-template-columns:minmax(88px,1fr) 36px 1fr auto;align-items:center;gap:10px;padding:10px 4px;border-bottom:1px solid var(--line);font-variant-numeric:tabular-nums}
.day .e{font-size:22px;text-align:center}
.bar{height:6px;border-radius:3px;background:var(--surface2);position:relative;overflow:hidden}
.bar i{position:absolute;top:0;bottom:0;border-radius:3px;background:linear-gradient(90deg,var(--info),var(--warn))}
.mini{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:8px;margin-top:12px}
.mini button{text-align:left;background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:10px 12px;cursor:pointer}
.mini button:hover{border-color:var(--line2)}
.mini b{font-size:20px;display:block;font-variant-numeric:tabular-nums}

/* character counter */
.cc-text{min-height:240px;line-height:1.7}
.meter{height:8px;border-radius:4px;background:var(--surface2);overflow:hidden;margin-top:8px}
.meter i{display:block;height:100%;background:var(--accent);transition:width .2s}
.meter.over i{background:var(--danger)}

/* monitor test */
.mt-start{display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center;padding:24px 0}
.mt-swatches{display:flex;gap:8px;justify-content:center}
.mt-swatches i{width:36px;height:36px;border-radius:9px;border:1px solid var(--line2)}
#mt-screen{position:fixed;inset:0;z-index:1000;cursor:none}
#mt-screen .mt-hint{position:absolute;left:50%;bottom:32px;transform:translateX(-50%);background:rgba(0,0,0,.72);color:#fff;padding:10px 16px;border-radius:999px;font-size:14px;transition:opacity .5s;white-space:nowrap}

/* qr */
.qr-out{display:flex;flex-direction:column;align-items:center;gap:12px}
.qr-out canvas{background:#fff;border-radius:12px;image-rendering:pixelated;max-width:min(100%,320px);height:auto}
.qr-grid{display:grid;gap:20px}
@media (min-width:760px){.qr-grid{grid-template-columns:1fr 340px}}

/* password */
.pw-list{display:flex;flex-direction:column;gap:8px;margin-top:16px}
.pw-item{display:flex;gap:8px;align-items:center;background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:8px 8px 8px 14px}
.pw-item code{flex:1;font:17px var(--mono);word-break:break-all;letter-spacing:.02em}

/* stopwatch */
.sw-disp{font-size:clamp(48px,13vw,96px);font-weight:750;font-variant-numeric:tabular-nums;letter-spacing:-.03em;text-align:center;line-height:1.1;margin:12px 0 20px}
.sw-disp small{font-size:.5em;color:var(--muted)}
.sw-btns{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.sw-btns .btn{min-width:110px;min-height:52px;font-size:17px}
.presets{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;margin:12px 0}
.done .sw-disp{color:var(--danger);animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:.35}}

/* bmi gauge */
.gauge{position:relative;height:12px;border-radius:6px;display:flex;overflow:hidden;margin:28px 0 8px}
.gauge span{height:100%}
.gauge-pin{position:absolute;top:-10px;width:3px;height:32px;background:var(--text);border-radius:2px;transform:translateX(-50%);transition:left .3s}
.gauge-wrap{position:relative}
.legend{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:12px;color:var(--muted)}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:4px;vertical-align:-1px}

/* unit converter list */
.ulist{margin-top:16px;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:8px}
.urow{display:flex;justify-content:space-between;align-items:baseline;gap:10px;background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:10px 14px;cursor:pointer;text-align:left;width:100%}
.urow:hover{border-color:var(--line2)}
.urow b{font-size:18px;font-variant-numeric:tabular-nums;word-break:break-all}
.urow span{font-size:13px;color:var(--muted);flex-shrink:0}
.urow.on{border-color:var(--accent)}

@media (max-width:560px){
  .hero{padding:32px 0 12px}
  .top-nav{display:none}
  .lang{margin-left:auto}
  .grid{grid-template-columns:1fr}
  .tool{padding:16px;border-radius:16px}
  .day{grid-template-columns:76px 30px 1fr auto;gap:8px}
  .seg button{flex:1 1 auto;padding:9px 10px;font-size:13.5px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}