/* =====================================================================
   Jidanshoppu Tools — Shared Design System
   Gold-standard palette: navy / cyan / orange · Bricolage + Hanken + JetBrains
   ===================================================================== */
:root{
  --navy:#0c1626; --navy-2:#11203a; --panel:#13233d; --panel-2:#0f1d33;
  --line:#21385c; --cream:#f6efe0; --cream-dim:#cdbfa8; --muted:#7d93b3;
  --cyan:#2fd4d4; --cyan-soft:#7df0f0; --cyan-d:#1ba6a6;
  --orange:#ff7a3d; --orange-soft:#ffa977;
  --red:#ff6b6b; --green:#37d399; --violet:#a78bfa;
  --radius:16px; --maxw:1120px;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:'Hanken Grotesk',system-ui,sans-serif;
  --display:'Bricolage Grotesque',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);background:var(--navy);color:var(--cream);
  min-height:100vh;line-height:1.55;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;position:relative;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(620px 520px at 12% -5%, rgba(47,212,212,.15), transparent 60%),
    radial-gradient(680px 560px at 105% 110%, rgba(255,122,61,.14), transparent 60%);
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:
    linear-gradient(rgba(125,147,179,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(125,147,179,.045) 1px, transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(circle at 50% 20%, #000 0%, transparent 78%);
          mask-image:radial-gradient(circle at 50% 20%, #000 0%, transparent 78%);
}
.wrap{position:relative;z-index:1;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.wrap.wide{max-width:1320px}
a{color:var(--cyan)}

/* ---------- Nav ---------- */
nav{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:24px 0 0}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:1.03rem;letter-spacing:-.01em;text-decoration:none;color:var(--cream)}
.brand .bolt{width:34px;height:34px;display:grid;place-items:center;border-radius:10px;background:linear-gradient(135deg,var(--cyan),var(--cyan-d));color:var(--navy);font-size:1.05rem;box-shadow:0 6px 22px rgba(47,212,212,.32)}
.brand b{color:var(--cyan)}
.pill{font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--cream-dim);border:1px solid var(--line);border-radius:100px;padding:7px 14px;display:flex;align-items:center;gap:8px;background:rgba(19,35,61,.5);text-decoration:none;transition:border-color .18s,color .18s}
a.pill:hover{border-color:var(--cyan);color:var(--cyan)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 0 rgba(47,212,212,.6);animation:pulse 2.4s infinite}
.dot.orange{background:var(--orange);animation:none}
.dot.green{background:var(--green);animation:none}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(47,212,212,.5)}70%{box-shadow:0 0 0 9px rgba(47,212,212,0)}100%{box-shadow:0 0 0 0 rgba(47,212,212,0)}}

/* ---------- Hero ---------- */
header.hero{padding:42px 0 24px;max-width:760px}
header.hero.big{padding:70px 0 34px}
.eyebrow{font-family:var(--mono);font-size:.73rem;letter-spacing:.22em;text-transform:uppercase;color:var(--orange-soft);margin-bottom:16px;display:inline-block}
h1{font-family:var(--display);font-weight:700;font-size:clamp(2.1rem,5.4vw,3.2rem);line-height:1;letter-spacing:-.03em;margin-bottom:14px}
header.hero.big h1{font-size:clamp(2.7rem,7vw,4.6rem);line-height:.98}
h1 .accent{background:linear-gradient(120deg,var(--cyan),var(--cyan-soft));-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{font-size:1.06rem;color:var(--cream-dim);max-width:620px}
.lede b{color:var(--cream)}
.meta-row{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px 26px;font-family:var(--mono);font-size:.78rem;color:var(--muted)}
.meta-row span{display:flex;align-items:center;gap:8px}
.meta-row b{color:var(--cyan);font-weight:600}

/* ---------- Panels ---------- */
.panel{background:linear-gradient(160deg,var(--panel),var(--navy-2));border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.panel + .panel{margin-top:18px}
.panel-h{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.panel-h .t{font-family:var(--mono);font-size:.8rem;font-weight:600;color:var(--cyan);letter-spacing:.02em}
.panel-h .t.o{color:var(--orange)} .panel-h .t.g{color:var(--green)}
.panel-h .c{font-family:var(--mono);font-size:.72rem;color:var(--muted)}

/* ---------- Form controls ---------- */
label.fld{display:block;font-family:var(--mono);font-size:.78rem;color:var(--cyan);margin-bottom:8px;letter-spacing:.02em}
label.fld.o{color:var(--orange)}
textarea,input[type=text],input[type=password],input[type=number],input[type=url],input[type=search]{
  width:100%;background:var(--panel-2);border:1px solid var(--line);color:var(--cream);
  border-radius:11px;padding:13px 14px;font-family:var(--mono);font-size:.9rem;line-height:1.55;
  outline:none;transition:border-color .2s,box-shadow .2s;
}
textarea{min-height:180px;resize:vertical}
textarea::placeholder,input::placeholder{color:var(--muted)}
textarea:focus,input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(47,212,212,.15)}
textarea.o:focus,input.o:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,122,61,.15)}
select{background:var(--panel-2);border:1px solid var(--line);color:var(--cream);border-radius:10px;padding:10px 12px;font-family:var(--mono);font-size:.82rem;outline:none;cursor:pointer}
select:focus{border-color:var(--cyan)}
.field{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--cream-dim)}
.check{display:flex;align-items:center;gap:8px;font-size:.86rem;color:var(--cream-dim);cursor:pointer;user-select:none}
.check input{accent-color:var(--cyan);width:16px;height:16px;cursor:pointer}
input[type=range]{accent-color:var(--cyan);width:100%}
input[type=color]{width:46px;height:38px;padding:0;border:1px solid var(--line);border-radius:9px;background:var(--panel-2);cursor:pointer}

/* ---------- Buttons ---------- */
.btn{font-family:var(--sans);font-size:.88rem;font-weight:600;cursor:pointer;border-radius:10px;padding:11px 16px;border:1px solid var(--line);background:var(--panel-2);color:var(--cream);display:inline-flex;align-items:center;justify-content:center;gap:7px;transition:all .18s;white-space:nowrap;text-decoration:none}
.btn:hover{border-color:var(--cyan);color:var(--cyan)}
.btn.primary{background:linear-gradient(135deg,var(--cyan),var(--cyan-d));border-color:transparent;color:var(--navy);box-shadow:0 6px 20px rgba(47,212,212,.28)}
.btn.primary:hover{filter:brightness(1.06);color:var(--navy)}
.btn.warn{background:linear-gradient(135deg,var(--orange),#e9632a);border-color:transparent;color:#2a1103;box-shadow:0 6px 20px rgba(255,122,61,.25)}
.btn.warn:hover{filter:brightness(1.06);color:#2a1103}
.btn.ghost{background:transparent}
.btn.danger:hover{border-color:var(--red);color:var(--red)}
.btn.sm{padding:8px 12px;font-size:.8rem}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.spacer{flex:1}

/* ---------- Layout helpers ---------- */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:740px){.grid2,.grid3{grid-template-columns:1fr}}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.muted{color:var(--muted)}
.mono{font-family:var(--mono)}
.hidden{display:none !important}
.tar{margin-left:auto}

/* ---------- Output / result ---------- */
.out{width:100%;min-height:150px;background:var(--panel-2);border:1px solid var(--line);border-radius:11px;color:#cfe6e6;font-family:var(--mono);font-size:.86rem;line-height:1.7;padding:14px;white-space:pre-wrap;word-break:break-word;overflow:auto}
.out.g{color:#a8e6cf}
.out .ph{color:var(--muted);font-style:italic}

/* ---------- Stat cards ---------- */
.stats{display:flex;flex-wrap:wrap;gap:10px}
.stat{flex:1;min-width:120px;background:var(--panel-2);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.stat .n{font-family:var(--display);font-weight:700;font-size:1.5rem;line-height:1;color:var(--cyan)}
.stat .n.o{color:var(--orange)} .stat .n.g{color:var(--green)} .stat .n.c{color:var(--cream)} .stat .n.r{color:var(--red)}
.stat .l{font-size:.73rem;color:var(--muted);margin-top:5px;font-family:var(--mono)}

/* ---------- chips / tags / kbd ---------- */
.chip{font-family:var(--mono);font-size:.68rem;letter-spacing:.04em;color:var(--muted);border:1px solid var(--line);border-radius:7px;padding:4px 9px;display:inline-flex;align-items:center;gap:6px}
.chip.on{color:var(--cyan);border-color:rgba(47,212,212,.5);background:rgba(47,212,212,.08)}
kbd{background:var(--panel-2);border:1px solid var(--line);border-radius:5px;padding:1px 6px;color:var(--cream-dim);font-family:var(--mono);font-size:.72rem}
.hint{font-family:var(--mono);font-size:.73rem;color:var(--muted);line-height:1.7}
.seg{display:inline-flex;background:var(--panel-2);border:1px solid var(--line);border-radius:12px;padding:4px;gap:4px;flex-wrap:wrap}
.seg button{font-family:var(--mono);font-size:.78rem;font-weight:500;color:var(--muted);background:transparent;border:none;cursor:pointer;padding:8px 13px;border-radius:9px;transition:.16s;white-space:nowrap}
.seg button.active{background:var(--cyan);color:#04221f;font-weight:700}
.seg button:not(.active):hover{color:var(--cream)}

/* ---------- Toast ---------- */
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%) translateY(16px);background:#16294a;border:1px solid var(--cyan);color:var(--cream);padding:11px 20px;border-radius:12px;font-size:.86rem;font-weight:600;box-shadow:0 14px 40px -10px rgba(0,0,0,.6);opacity:0;pointer-events:none;transition:all .25s;z-index:80;display:flex;align-items:center;gap:9px}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast .tdot{width:8px;height:8px;border-radius:50%;background:var(--cyan)}

/* ---------- Footer ---------- */
footer{position:relative;z-index:1;border-top:1px solid var(--line);margin-top:36px;padding:26px 0 44px}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}
footer p{font-size:.82rem;color:var(--muted)}
footer a{color:var(--cyan);text-decoration:none}
footer a:hover{text-decoration:underline}
.safe{font-family:var(--mono);font-size:.72rem;color:var(--cream-dim);display:flex;align-items:center;gap:8px}

/* =====================================================================
   HUB (index) — search + tool cards
   ===================================================================== */
.toolbar{display:flex;align-items:center;gap:14px;margin:14px 0 26px;flex-wrap:wrap}
.search{position:relative;flex:1;max-width:440px;min-width:220px}
.search svg{position:absolute;left:16px;top:50%;transform:translateY(-50%);opacity:.5}
.search input{width:100%;background:var(--panel);border:1px solid var(--line);color:var(--cream);border-radius:12px;padding:13px 16px 13px 44px;font-family:var(--sans);font-size:.95rem;outline:none;transition:border-color .2s,box-shadow .2s}
.search input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(47,212,212,.16)}
.count-tag{font-family:var(--mono);font-size:.72rem;color:var(--muted);white-space:nowrap}
.cats{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.cat{font-family:var(--mono);font-size:.72rem;letter-spacing:.04em;color:var(--cream-dim);border:1px solid var(--line);border-radius:100px;padding:7px 14px;background:rgba(19,35,61,.5);cursor:pointer;transition:.16s}
.cat:hover{color:var(--cyan);border-color:var(--cyan)}
.cat.active{background:var(--cyan);color:var(--navy);border-color:transparent;font-weight:700}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px;padding-bottom:20px}
.card{position:relative;display:flex;flex-direction:column;background:linear-gradient(160deg,var(--panel),var(--navy-2));border:1px solid var(--line);border-radius:18px;padding:24px 22px 20px;text-decoration:none;color:inherit;overflow:hidden;isolation:isolate;transition:transform .28s cubic-bezier(.2,.7,.3,1),border-color .28s,box-shadow .28s;opacity:0;transform:translateY(16px);animation:rise .5s forwards}
@keyframes rise{to{opacity:1;transform:none}}
.card::before{content:"";position:absolute;inset:0;background:radial-gradient(420px 200px at 80% -10%, var(--glow,rgba(47,212,212,.18)), transparent 70%);opacity:0;transition:opacity .3s;z-index:-1}
.card:hover{transform:translateY(-6px);border-color:var(--edge,var(--cyan));box-shadow:0 18px 44px -18px rgba(0,0,0,.7)}
.card:hover::before{opacity:1}
.card:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.card .idx{position:absolute;top:14px;right:18px;font-family:var(--display);font-weight:700;font-size:3.2rem;line-height:1;color:var(--line);opacity:.55;z-index:-1;user-select:none}
.card .icon{width:50px;height:50px;display:grid;place-items:center;border-radius:13px;font-size:1.5rem;margin-bottom:16px;background:var(--icon-bg,rgba(47,212,212,.13));border:1px solid var(--icon-bd,rgba(47,212,212,.3))}
.card h3{font-family:var(--display);font-weight:600;font-size:1.24rem;letter-spacing:-.01em;margin-bottom:8px}
.card p{font-size:.9rem;color:var(--cream-dim);flex:1}
.card .tags{display:flex;flex-wrap:wrap;gap:7px;margin:15px 0 16px}
.card .tag{font-family:var(--mono);font-size:.64rem;letter-spacing:.04em;color:var(--muted);border:1px solid var(--line);border-radius:7px;padding:4px 9px}
.card .open{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding-top:13px;font-family:var(--mono);font-size:.78rem;color:var(--accent,var(--cyan));font-weight:600}
.card .open .arrow{transition:transform .26s}
.card:hover .open .arrow{transform:translateX(5px)}
.empty{grid-column:1/-1;text-align:center;padding:56px 20px;color:var(--muted);font-family:var(--mono);font-size:.85rem;border:1px dashed var(--line);border-radius:18px}

@media (max-width:620px){
  nav{flex-wrap:wrap}
  nav .pill.hide-sm{display:none}
  .toolbar{flex-direction:column;align-items:stretch}
  .search{max-width:none}
  .btn{padding:10px 13px;font-size:.83rem}
}

/* =====================================================================
   Nav controls: theme toggle + language switcher
   ===================================================================== */
.navctl{display:flex;align-items:center;gap:10px}
.iconbtn-nav{width:38px;height:38px;display:grid;place-items:center;border-radius:10px;border:1px solid var(--line);background:rgba(19,35,61,.5);color:var(--cream-dim);cursor:pointer;transition:.18s;font-size:1rem;flex-shrink:0}
.iconbtn-nav:hover{border-color:var(--cyan);color:var(--cyan)}
.langwrap{position:relative}
.langbtn{display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;border-radius:10px;border:1px solid var(--line);background:rgba(19,35,61,.5);color:var(--cream-dim);cursor:pointer;font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;transition:.18s;white-space:nowrap}
.langbtn:hover{border-color:var(--cyan);color:var(--cyan)}
.langbtn .flag{font-size:1rem}
.langmenu{position:absolute;top:46px;right:0;z-index:60;width:230px;max-height:340px;overflow:auto;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:6px;box-shadow:0 20px 50px -14px rgba(0,0,0,.6);display:none}
.langmenu.open{display:block}
.langmenu button{display:flex;align-items:center;gap:10px;width:100%;text-align:left;padding:8px 10px;border:none;border-radius:8px;background:transparent;color:var(--cream);cursor:pointer;font-family:var(--sans);font-size:.86rem;transition:.12s}
.langmenu button:hover{background:var(--panel-2)}
.langmenu button.active{color:var(--cyan);background:var(--panel-2)}
.langmenu button .flag{font-size:1.05rem}
.langmenu button .sub{color:var(--muted);font-size:.72rem;font-family:var(--mono);margin-left:auto}
[dir="rtl"] .langmenu{right:auto;left:0;text-align:right}
[dir="rtl"] .langmenu button{text-align:right;flex-direction:row-reverse}
[dir="rtl"] .langmenu button .sub{margin-left:0;margin-right:auto}
[dir="rtl"] .lede,[dir="rtl"] .card p,[dir="rtl"] .hint{text-align:right}

/* =====================================================================
   LIGHT THEME
   ===================================================================== */
:root[data-theme="light"]{
  --navy:#eef2f9; --navy-2:#ffffff; --panel:#ffffff; --panel-2:#f1f5fb;
  --line:#d6e0ee; --cream:#12233b; --cream-dim:#3f5473; --muted:#6b7f9c;
  --cyan:#0e9d9d; --cyan-soft:#0b7d8a; --cyan-d:#0c8686;
  --orange:#e05c1e; --orange-soft:#c2500f;
  --red:#dc2f2f; --green:#0f9a63; --violet:#6d4bd1;
}
:root[data-theme="light"] body::before{
  background:
    radial-gradient(620px 520px at 12% -5%, rgba(14,157,157,.12), transparent 60%),
    radial-gradient(680px 560px at 105% 110%, rgba(224,92,30,.10), transparent 60%);
}
:root[data-theme="light"] body::after{
  background-image:
    linear-gradient(rgba(90,110,140,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90,110,140,.06) 1px, transparent 1px);
}
:root[data-theme="light"] .pill,
:root[data-theme="light"] .iconbtn-nav,
:root[data-theme="light"] .langbtn,
:root[data-theme="light"] .cat{background:#ffffff}
:root[data-theme="light"] .brand .bolt{color:#f6fffe}
:root[data-theme="light"] .btn.primary{color:#f4fffe}
:root[data-theme="light"] .out{color:#123}
:root[data-theme="light"] .out.g{color:#0c6b47}
:root[data-theme="light"] .toast{background:#ffffff;color:var(--cream)}
:root[data-theme="light"] .seg{background:var(--panel-2)}
:root[data-theme="light"] .seg button.active{color:#fff}
:root[data-theme="light"] .card .idx{opacity:.9}
:root[data-theme="light"] input[type=color]{background:#fff}
:root[data-theme="light"] .langmenu{box-shadow:0 20px 50px -14px rgba(30,50,90,.28)}
.theme-ico-sun{display:none}
:root[data-theme="light"] .theme-ico-sun{display:block}
:root[data-theme="light"] .theme-ico-moon{display:none}

/* =====================================================================
   JAPANESE ACCENT — katakana / kanji / hanko seal
   ===================================================================== */
:root{ --jp:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",-apple-system,BlinkMacSystemFont,sans-serif; --seal:#e0483a; }

/* brand with katakana subline */
.brand{align-items:center;gap:12px}
.brand .btxt{display:flex;flex-direction:column;line-height:1}
.brand .btxt b{color:var(--cyan)}
.brand .jp{font-family:var(--jp);font-size:.56rem;font-weight:500;letter-spacing:.34em;color:var(--muted);margin-top:4px;text-transform:none}

/* hanko (red seal stamp) */
.hanko{font-family:var(--jp);display:inline-grid;place-items:center;width:30px;height:30px;border:2px solid var(--seal);color:var(--seal);border-radius:8px;font-size:1rem;font-weight:800;transform:rotate(-7deg);background:rgba(224,72,58,.06);box-shadow:inset 0 0 0 2px rgba(224,72,58,.14);flex-shrink:0}
:root[data-theme="light"] .hanko{background:rgba(224,72,58,.08)}

/* thin editorial top rule in seal red + cyan */
body > .wrap:first-of-type{border-top:3px solid transparent;border-image:linear-gradient(90deg,var(--seal),var(--cyan) 55%,transparent) 1}

/* giant faint kanji watermark behind every hero (道具 = "tools") */
header.hero{position:relative;overflow:hidden}
header.hero::after{content:"道具";position:absolute;top:-.16em;right:-.03em;font-family:var(--jp);font-weight:800;font-size:clamp(6rem,17vw,12rem);line-height:.8;letter-spacing:-.06em;color:var(--cyan);opacity:.055;pointer-events:none;z-index:0;user-select:none}
:root[data-theme="light"] header.hero::after{opacity:.07}
header.hero > *{position:relative;z-index:1}

/* katakana label used above hub title */
.jp-eyebrow{font-family:var(--jp);font-weight:500;font-size:.8rem;letter-spacing:.5em;color:var(--seal);opacity:.9;display:block;margin-bottom:6px}

/* vertical katakana strip on wide screens (decorative) */
.jp-strip{position:fixed;top:50%;right:14px;transform:translateY(-50%);writing-mode:vertical-rl;text-orientation:upright;font-family:var(--jp);font-size:.68rem;letter-spacing:.45em;color:var(--muted);opacity:.22;pointer-events:none;z-index:1}
@media (max-width:1400px){ .jp-strip{display:none} }

@media (max-width:440px){ .brand .jp{display:none} .hanko{display:none} }