/* Shared styles for /tools/<slug>/ converter pages */
:root{
  --bg:#f8fafc; --bg-2:#ffffff; --surface:#ffffff; --surface-2:#f1f5f9;
  --text:#0f172a; --muted:#475569; --faint:#64748b;
  --border:#e2e8f0; --border-strong:#cbd5e1;
  --accent:#2563eb; --accent-soft:rgba(37,99,235,.08);
  --good:#15924a; --warn:#9a6412; --bad:#b42323;
  --shadow:0 1px 2px rgba(15,23,42,.04),0 8px 30px rgba(15,23,42,.06);
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  /* editor (always dark) */
  --ed-bg:#0b1120; --ed-bar:#111a2e; --ed-line:#1e293b; --ed-text:#cbd5e1; --ed-dim:#7c8aa0;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0a0f1c; --bg-2:#0f1629; --surface:#111a2e; --surface-2:#16213a;
    --text:#e2e8f0; --muted:#94a3b8; --faint:#7c8aa0;
    --border:#1e293b; --border-strong:#334155;
    --accent:#3b82f6; --accent-soft:rgba(59,130,246,.14);
    --good:#3ccf78; --warn:#f0b54a; --bad:#ff7b7b;
    --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 30px rgba(0,0,0,.25);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0a0f1c; --bg-2:#0f1629; --surface:#111a2e; --surface-2:#16213a;
  --text:#e2e8f0; --muted:#94a3b8; --faint:#7c8aa0;
  --border:#1e293b; --border-strong:#334155;
  --accent:#3b82f6; --accent-soft:rgba(59,130,246,.14);
  --good:#3ccf78; --warn:#f0b54a; --bad:#ff7b7b;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 30px rgba(0,0,0,.25);
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
.wrap-wide{max-width:1320px;margin:0 auto;padding:0 24px}
@media (max-width:600px){.wrap,.wrap-wide{padding:0 16px}}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- nav (shared) ---------- */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);background:color-mix(in srgb,var(--bg) 80%,transparent);border-bottom:1px solid var(--border)}
.nav .wrap{display:flex;align-items:center;height:64px;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.01em;font-size:17px;flex:none}
.brand .mark{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,#22d3ee,#2563eb);display:grid;place-items:center;box-shadow:0 4px 14px -4px #2563eb}
.brand .mark svg{width:18px;height:18px}
.nav-links{display:flex;gap:2px;margin-left:4px}
.nav-links a{padding:8px 11px;border-radius:8px;color:var(--muted);font-size:14.5px;font-weight:500;white-space:nowrap;transition:color .15s,background .15s}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--text);background:var(--surface-2)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;color:var(--muted);border:1px solid var(--border)}
.icon-btn:hover{color:var(--text);border-color:var(--border-strong)}
.icon-btn svg{width:18px;height:18px}
.menu-btn{display:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:38px;padding:0 15px;border-radius:10px;font-weight:600;font-size:14px;white-space:nowrap;transition:transform .15s,background .15s,border-color .15s,opacity .15s}
.btn svg{width:16px;height:16px}
.btn-primary{background:#2563eb;color:#fff;box-shadow:0 6px 20px -8px #2563eb}
.btn-primary:hover{transform:translateY(-1px)}
@media (max-width:900px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;padding:12px 16px 18px;background:var(--bg);border-bottom:1px solid var(--border);margin:0;box-shadow:0 18px 30px -18px rgba(15,23,42,.25)}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px}
  .menu-btn{display:grid}
}
@media (max-width:420px){.nav .wrap{gap:10px}.nav-right{gap:6px}.brand{font-size:15.5px}}

/* ---------- header ---------- */
.crumbs{padding-top:24px;font-size:13.5px;color:var(--faint)}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0}
.crumbs li+li::before{content:"/";margin-right:8px;color:var(--border-strong)}
.crumbs a{color:var(--muted)}.crumbs a:hover{color:var(--text)}
.tool-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding:14px 0 20px;flex-wrap:wrap}
.tool-head h1{font-size:clamp(28px,3.6vw,40px);line-height:1.1;letter-spacing:-.03em;margin:0 0 8px;font-weight:800}
.tool-head p{margin:0;color:var(--muted);font-size:16.5px;max-width:720px}
.tool-head p a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.head-links{display:flex;gap:8px;flex-wrap:wrap}
.chip-link{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 12px;border-radius:999px;border:1px solid var(--border);background:var(--surface);font-size:13.5px;font-weight:600;color:var(--muted);transition:color .15s,border-color .15s}
.chip-link:hover{color:var(--text);border-color:var(--border-strong)}
.chip-link svg{width:14px;height:14px}

/* ---------- converter ---------- */
.conv{background:var(--surface);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}
.panes{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:1px;background:var(--ed-line)}
@media (max-width:900px){.panes{grid-template-columns:minmax(0,1fr)}}
.pane{display:flex;flex-direction:column;background:var(--ed-bg);min-width:0}
.pane-bar{display:flex;align-items:center;gap:8px;min-height:46px;padding:6px 8px 6px 16px;background:var(--ed-bar);border-bottom:1px solid var(--ed-line);color:#cbd5e1}
.pane-title{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:600;letter-spacing:.01em;margin-right:auto;min-width:0}
.pane-title .step{width:20px;height:20px;border-radius:50%;background:rgba(34,211,238,.16);color:#67e8f9;font-size:11.5px;font-weight:700;display:grid;place-items:center;flex:none}
.pane-title .lang{font-family:var(--mono);font-size:11.5px;color:#94a3b8;background:rgba(255,255,255,.06);padding:2px 7px;border-radius:5px;white-space:nowrap}
.pbtn{display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 10px;border-radius:8px;font-size:12.5px;font-weight:600;color:#a3b1c6;transition:background .15s,color .15s;white-space:nowrap}
.pbtn:hover:not(:disabled){background:rgba(255,255,255,.08);color:#fff}
.pbtn:disabled{opacity:.4;cursor:not-allowed}
.pbtn svg{width:15px;height:15px;flex:none}
.pbtn.ok{color:#3ccf78}
@media (max-width:560px){.pbtn .lbl{display:none}.pbtn{padding:0 8px}}

.editor{position:relative;flex:none;display:flex;height:min(62vh,560px);min-height:320px;font-family:var(--mono);font-size:13.5px;line-height:21px;color:var(--ed-text)}
@media (max-width:900px){.editor{height:360px;min-height:0}}
.gutter{flex:none;width:48px;padding:14px 10px 14px 0;text-align:right;color:#475569;background:var(--ed-bg);overflow:hidden;user-select:none;white-space:pre;font-variant-numeric:tabular-nums;border-right:1px solid #1a1f2a}
.code-area{position:relative;flex:1;min-width:0;overflow:hidden}
.code-area pre,.code-area textarea{margin:0;padding:14px 16px;font:inherit;line-height:inherit;tab-size:2;white-space:pre;overflow-wrap:normal;word-break:normal;letter-spacing:0}
.code-area pre{position:absolute;inset:0;overflow:hidden;pointer-events:none;color:var(--ed-text)}
.code-area pre code{font:inherit;display:block;min-height:100%}
.code-area textarea{position:absolute;inset:0;width:100%;height:100%;resize:none;border:0;outline:0;background:transparent;color:transparent;caret-color:#67e8f9;overflow:auto;-webkit-text-fill-color:transparent}
.code-area textarea::selection{background:rgba(127,176,255,.28);-webkit-text-fill-color:transparent}
.code-area textarea::placeholder{color:#5b6b82;-webkit-text-fill-color:#5b6b82}
.code-area.out pre{pointer-events:auto;overflow:auto;user-select:text}
.wrap-on .code-area pre,.wrap-on .code-area textarea{white-space:pre-wrap;overflow-wrap:anywhere}
.wrap-on .gutter{visibility:hidden}

.drop-hint{position:absolute;inset:10px;border:2px dashed #3b82f6;border-radius:12px;background:rgba(11,17,32,.85);display:none;place-items:center;color:#67e8f9;font-family:var(--sans);font-weight:600;font-size:15px;z-index:3}
.pane.dragging .drop-hint{display:grid}

.empty-out{position:absolute;inset:0;display:grid;place-items:center;padding:24px;text-align:center;font-family:var(--sans);color:#6b7280;font-size:14px;line-height:1.6;pointer-events:none}
.empty-out b{display:block;color:#94a3b8;font-size:15px;margin-bottom:4px}
.empty-out kbd{font-family:var(--mono);font-size:12px;border:1px solid #334155;border-radius:5px;padding:1px 6px;color:#a3b1c6}
.caret-blink::after{content:"";display:inline-block;width:8px;height:16px;background:#67e8f9;vertical-align:-3px;margin-left:1px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

.pane-foot{display:flex;align-items:center;gap:12px;padding:7px 16px;background:var(--ed-bar);border-top:1px solid var(--ed-line);font-size:12px;color:var(--ed-dim);font-family:var(--mono);min-height:34px}
.pane-foot .sp{margin-left:auto}

/* action bar */
.actions{display:flex;align-items:center;gap:14px;padding:14px 16px;border-top:1px solid var(--border);background:var(--surface);flex-wrap:wrap}
.convert{height:46px;padding:0 22px;border-radius:12px;background:#2563eb;color:#fff;font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:10px;box-shadow:0 8px 22px -10px #2563eb;transition:transform .15s,opacity .15s,background .15s}
.convert:hover:not(:disabled){transform:translateY(-1px);background:#1d4ed8}
.convert:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}
.convert kbd{font-family:var(--mono);font-size:11px;font-weight:600;padding:2px 6px;border-radius:5px;background:rgba(255,255,255,.2)}
.convert svg{width:18px;height:18px}
.convert.stop{background:var(--surface-2);color:var(--text);box-shadow:none;border:1px solid var(--border-strong)}
.spin{width:16px;height:16px;border-radius:50%;border:2px solid currentColor;border-right-color:transparent;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.status{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);min-width:0;flex:1}
.status .dot{width:8px;height:8px;border-radius:50%;background:var(--faint);flex:none}
.status.working .dot{background:#2563eb;animation:pulse 1.2s ease-in-out infinite}
.status.done .dot{background:var(--good)}
.status.error .dot{background:var(--bad)}
.status.error{color:var(--bad)}
.status a,.status button{color:var(--accent);font-weight:600;text-decoration:underline;text-underline-offset:3px}
@keyframes pulse{50%{opacity:.35}}
.privacy{position:relative;display:flex;align-items:center;gap:6px;margin-left:auto;font-size:13px}
.privacy-note{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-weight:500}
.privacy-note svg{width:14px;height:14px;flex:none;color:var(--good)}
.privacy-btn{color:var(--muted);font-size:13px;font-weight:500;padding:4px 8px;border-radius:7px;text-decoration:underline;text-decoration-color:var(--border-strong);text-underline-offset:3px;transition:color .15s,background .15s}
.privacy-btn:hover,.privacy-btn[aria-expanded="true"]{color:var(--text);background:var(--surface-2);text-decoration-color:transparent}
.privacy-pop{position:absolute;right:0;bottom:calc(100% + 10px);width:min(360px,calc(100vw - 32px));padding:16px 18px;border-radius:14px;background:var(--surface);border:1px solid var(--border);box-shadow:0 18px 50px -12px rgba(0,0,0,.28);z-index:30;font-size:13.5px;line-height:1.55;color:var(--muted)}
.privacy-pop[hidden]{display:none}
.privacy-pop::after{content:"";position:absolute;right:28px;bottom:-6px;width:10px;height:10px;background:var(--surface);border-right:1px solid var(--border);border-bottom:1px solid var(--border);transform:rotate(45deg)}
.privacy-title{margin:0 0 8px;font-weight:700;color:var(--text);font-size:14px}
.privacy-pop ul{margin:0 0 10px;padding-left:18px;display:grid;gap:6px}
.privacy-pop li::marker{color:var(--good)}
.privacy-pop a{color:var(--accent);font-weight:600;text-decoration:underline;text-underline-offset:3px}
@media (max-width:700px){.privacy{margin-left:0;width:100%;justify-content:space-between}.privacy-pop{left:0;right:0;width:auto}.convert{width:100%;justify-content:center}}

/* secret warning */
.alert{display:none;gap:12px;align-items:flex-start;margin:0 16px 14px;padding:12px 14px;border-radius:12px;border:1px solid color-mix(in srgb,var(--warn) 40%,transparent);background:color-mix(in srgb,var(--warn) 9%,transparent);font-size:14px;color:var(--text)}
.alert.show{display:flex}
.alert svg{width:18px;height:18px;color:var(--warn);flex:none;margin-top:2px}
.alert b{display:block;margin-bottom:2px}
.alert .row{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.alert button{height:32px;padding:0 12px;border-radius:8px;font-size:13px;font-weight:600;border:1px solid var(--border-strong);background:var(--surface)}
.alert button.primary{background:var(--text);color:var(--bg);border-color:var(--text)}

/* toast */
.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,20px);background:var(--text);color:var(--bg);padding:10px 16px;border-radius:10px;font-size:14px;font-weight:600;opacity:0;pointer-events:none;transition:all .25s;z-index:100}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* Prism tokens (editor palette) */
.token.comment,.token.prolog,.token.doctype,.token.cdata{color:#7c8aa0;font-style:italic}
.token.punctuation{color:#94a3b8}
.token.property,.token.tag,.token.constant,.token.symbol,.token.deleted,.token.key{color:#82aaff}
.token.boolean,.token.number{color:#f78c6c}
.token.selector,.token.attr-name,.token.string,.token.char,.token.builtin,.token.inserted,.token.heredoc{color:#c3e88d}
.token.operator,.token.entity,.token.url{color:#89ddff}
.token.atrule,.token.attr-value,.token.keyword,.token.important{color:#c792ea}
.token.function,.token.method{color:#82aaff}
.token.class-name,.token.type,.token.namespace{color:#ffcb6b}
.token.regex,.token.variable,.token.interpolation{color:#f07178}
.token.block,.token.label{color:#ffcb6b}

/* ---------- supporting content ---------- */
.content{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;padding:56px 0 20px}
@media (max-width:980px){.content{grid-template-columns:minmax(0,1fr);gap:24px;padding-top:40px}}
.prose{max-width:760px;min-width:0}
.prose section{scroll-margin-top:84px;padding-bottom:44px}
.prose h2{font-size:clamp(24px,3vw,30px);line-height:1.2;letter-spacing:-.025em;margin:0 0 14px;font-weight:800}
.prose h3{font-size:17.5px;letter-spacing:-.01em;margin:24px 0 6px;line-height:1.35}
.prose p{margin:0 0 14px;color:var(--muted)}
.prose p strong,.prose li strong{color:var(--text)}
.prose ul{color:var(--muted);padding-left:22px;margin:0 0 16px}
.prose li{margin:6px 0}
.prose li::marker{color:var(--accent)}
.prose a{color:var(--accent);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.prose code{font-family:var(--mono);font-size:.86em;background:var(--surface-2);padding:1px 6px;border-radius:5px;color:var(--text);overflow-wrap:anywhere}
.steps{list-style:none;padding:0!important;counter-reset:s;margin:14px 0 8px!important}
.steps li{counter-increment:s;position:relative;padding:0 0 16px 46px;margin:0}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-weight:700;font-size:14px;display:grid;place-items:center}
.steps li:not(:last-child)::after{content:"";position:absolute;left:14.5px;top:36px;bottom:4px;width:1px;background:var(--border)}
.steps b{display:block;color:var(--text);margin-bottom:2px}
.callout{border-left:3px solid var(--warn);background:color-mix(in srgb,var(--warn) 8%,transparent);border-radius:0 12px 12px 0;padding:16px 18px;margin:18px 0}
.callout p{margin:0!important}
.faq{display:flex;flex-direction:column;gap:8px}
.faq details{border-radius:12px;background:var(--surface);border:1px solid var(--border)}
.faq summary{list-style:none;cursor:pointer;padding:15px 18px;display:flex;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary h3{margin:0;font-size:15.5px;letter-spacing:-.01em;line-height:1.4}
.faq summary::after{content:"";margin-left:auto;flex:none;width:9px;height:9px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg) translate(-3px,-3px);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(-135deg) translate(-3px,-3px)}
.faq .ans{padding:0 18px 16px}
.faq .ans p{margin:0;font-size:15px}

.side{display:flex;flex-direction:column;gap:18px;align-self:start;position:sticky;top:88px}
@media (max-width:980px){.side{position:static}}
.side-card{border:1px solid var(--border);border-radius:14px;background:var(--surface);padding:18px}
.side-card h2{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--faint);margin:0 0 12px;font-weight:700}
.side-card ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.side-card li a{display:flex;align-items:center;gap:8px;padding:8px 10px;margin:0 -10px;border-radius:8px;font-size:14px;font-weight:500;color:var(--muted)}
.side-card li a:hover{background:var(--surface-2);color:var(--text)}
.side-card li a .arr{color:var(--accent)}
.side-card.dark{background:#0b1120;border-color:#0b1120;color:#e2e8f0}
.side-card.dark h2{color:#94a3b8}
.side-card.dark p{margin:0 0 14px;font-size:14px;color:#94a3b8;line-height:1.55}
.side-card.dark .cmd{font-family:var(--mono);font-size:13px;padding:10px 12px;border-radius:9px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);display:flex;gap:8px;align-items:center}
.side-card.dark .cmd span{color:#67e8f9}
.side-card.dark .cmd button{margin-left:auto;font-family:var(--sans);font-size:12px;font-weight:600;color:#cbd5e1;padding:3px 8px;border-radius:6px;background:rgba(255,255,255,.08)}
.side-card.dark a.more{display:inline-block;margin-top:12px;color:#67e8f9;font-size:13.5px;font-weight:600}

/* ---------- footer (shared) ---------- */
footer{padding:56px 0 36px;border-top:1px solid var(--border);margin-top:40px;background:var(--bg-2)}
.foot{display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:32px}
@media (max-width:980px){.foot{grid-template-columns:repeat(4,1fr)}.foot>div:first-child{grid-column:1/-1}}
@media (max-width:600px){.foot{grid-template-columns:1fr 1fr;gap:28px 20px}.foot>div:first-child{grid-column:1/-1}}
.foot h2{margin:0 0 14px;font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--faint)}
.foot ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;font-size:14.5px}
.foot a{color:var(--muted)}.foot a:hover{color:var(--text)}
.foot .brand,.foot .brand:hover{color:var(--text);text-decoration:none}
.foot p{color:var(--muted);font-size:14.5px;line-height:1.6;max-width:300px;margin:12px 0 0}
.copyright{margin-top:40px;padding-top:22px;border-top:1px solid var(--border);font-size:13px;color:var(--faint);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.copyright a{color:var(--faint);text-decoration:none}
.copyright a:hover{color:var(--text)}
.prose kbd{font-family:var(--mono);font-size:.8em;padding:1px 6px;border:1px solid var(--border-strong);border-bottom-width:2px;border-radius:5px;background:var(--surface);color:var(--text)}
.empty-out[hidden]{display:none}
@media (max-width:560px){.pane-title .lang{display:none}.pane-title{white-space:nowrap}.pane-bar{padding-left:12px}}
@media (max-width:560px){.pane-foot .sp{display:none}}

/* Sign in link (desktop button; in the mobile menu on small screens) */
.nav-signin{display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:10px;font-size:14px;font-weight:600;color:var(--text);border:1px solid var(--border-strong);white-space:nowrap;transition:border-color .15s,background .15s}
.nav-signin:hover{border-color:var(--text);text-decoration:none}
.nav-links a.nav-mobile-only{display:none}
@media (max-width:560px){.nav-signin{display:none}.nav-links a.nav-mobile-only{display:block;font-weight:600;color:var(--text)}}