/* HCODX Stage 3 — shared theme for network / web utility tools */
:root[data-theme="dark"]{--bg:#08090b;--bg-elevated:#0e0f12;--surface:#111114;--surface-2:#16171b;--surface-3:#1c1d22;--border:#22232a;--border-strong:#2c2d35;--border-subtle:#1a1b21;--text:#ececef;--text-2:#a4a6ad;--text-3:#6c6e76;--accent:#3b82f6;--accent-2:#60a5fa;--accent-soft:rgba(59,130,246,0.12);--accent-glow:rgba(59,130,246,0.32);--add:#34d399;--add-bg:rgba(16,185,129,0.12);--add-bg-strong:rgba(16,185,129,0.22);--remove:#f87171;--remove-bg:rgba(239,68,68,0.12);--remove-bg-strong:rgba(239,68,68,0.22);--warn:#f59e0b;--shadow-md:0 4px 16px rgba(0,0,0,.4);--shadow-lg:0 12px 40px rgba(0,0,0,.5);--shadow-glow:0 0 0 1px var(--accent-soft),0 8px 24px var(--accent-glow);--radius-sm:6px;--radius:10px;--radius-lg:14px;color-scheme:dark}
:root[data-theme="light"]{--bg:#fafaf9;--bg-elevated:#fff;--surface:#fff;--surface-2:#f5f5f4;--surface-3:#e7e5e4;--border:#e5e5e3;--border-strong:#d4d4d2;--border-subtle:#ededeb;--text:#18181b;--text-2:#3f3f46;--text-3:#57575f;--accent:#1d4ed8;--accent-2:#2563eb;--accent-soft:rgba(29,78,216,.08);--accent-glow:rgba(29,78,216,.18);--add:#047857;--add-bg:rgba(16,185,129,.1);--add-bg-strong:rgba(16,185,129,.2);--remove:#b91c1c;--remove-bg:rgba(239,68,68,.1);--remove-bg-strong:rgba(239,68,68,.2);--warn:#b45309;--shadow-md:0 4px 16px rgba(0,0,0,.06);--shadow-lg:0 12px 40px rgba(0,0,0,.1);--shadow-glow:0 0 0 1px var(--accent-soft),0 8px 24px var(--accent-glow);--radius-sm:6px;--radius:10px;--radius-lg:14px;color-scheme:light}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:'Plus Jakarta Sans',-apple-system,BlinkMacSystemFont,system-ui,sans-serif;font-size:15px;line-height:1.55;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}
body::before{content:'';position:fixed;inset:0;pointer-events:none;z-index:0;background:radial-gradient(ellipse 80% 50% at 50% -20%,var(--accent-soft),transparent 60%),radial-gradient(ellipse 60% 40% at 90% 10%,rgba(124,58,237,.06),transparent 50%)}
a{color:var(--accent);text-decoration:none;transition:color .15s ease}
a:hover{color:var(--accent-2)}
.prose p a,.prose li a,.faq-answer-inner p a,.faq-answer-inner li a,.hero p a{text-decoration:underline}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{font-family:'Bricolage Grotesque','Plus Jakarta Sans',sans-serif;font-weight:700;letter-spacing:-.02em;margin:0;color:var(--text)}
code,pre,.mono{font-family:'JetBrains Mono',ui-monospace,'SF Mono',Menlo,monospace}
.app{position:relative;z-index:1;display:flex;flex-direction:column;min-height:100vh}
.header{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:14px 24px;background:color-mix(in srgb,var(--bg) 70%,transparent);backdrop-filter:saturate(140%) blur(16px);-webkit-backdrop-filter:saturate(140%) blur(16px);border-bottom:1px solid var(--border-subtle)}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:15px}
.brand-mark{width:28px;height:28px;border-radius:7px;background:linear-gradient(135deg,var(--accent),#7c3aed);display:grid;place-items:center;color:#fff;font-size:13px;box-shadow:0 4px 12px var(--accent-glow)}
.brand-name{font-family:'Bricolage Grotesque',sans-serif;font-weight:700}
.brand-slash{color:var(--text-3);margin:0 4px}
.brand-tool{color:var(--text-2);font-weight:500}
.header-actions{display:flex;align-items:center;gap:8px}
.icon-btn{width:36px;height:36px;display:grid;place-items:center;background:transparent;border:1px solid var(--border);border-radius:8px;color:var(--text-2);font-size:14px}
.theme-toggle{position:relative;width:36px;height:36px;display:grid;place-items:center;background:transparent;border:1px solid var(--border);border-radius:8px;color:var(--text-2)}
.theme-toggle .sun,.theme-toggle .moon{position:absolute;transition:opacity .2s,transform .2s}
:root[data-theme="dark"] .theme-toggle .sun{opacity:1;transform:scale(1)}
:root[data-theme="dark"] .theme-toggle .moon{opacity:0;transform:scale(.5)}
:root[data-theme="light"] .theme-toggle .sun{opacity:0;transform:scale(.5)}
:root[data-theme="light"] .theme-toggle .moon{opacity:1;transform:scale(1)}
.main{flex:1;width:100%;max-width:1240px;margin:0 auto;padding:24px 24px 80px}
.breadcrumbs{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-3);margin-bottom:24px}
.breadcrumbs ol{list-style:none;padding:0;margin:0;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.breadcrumbs li:not(:last-child)::after{content:'/';color:var(--text-3);margin-left:6px}
.breadcrumbs a{color:var(--text-2)}
.breadcrumbs li:last-child span{color:var(--text)}
.hero{margin-bottom:32px}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:5px 11px;background:var(--surface);border:1px solid var(--border);border-radius:999px;font-size:12px;font-weight:500;color:var(--text-2);margin-bottom:16px}
.hero-eyebrow .dot{width:6px;height:6px;background:var(--add);border-radius:50%;box-shadow:0 0 0 3px rgba(52,211,153,.18)}
.hero h1{font-size:clamp(28px,5vw,44px);line-height:1.05;letter-spacing:-.035em;margin-bottom:12px;background:linear-gradient(180deg,var(--text),color-mix(in srgb,var(--text) 70%,transparent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero h1 .accent{color:var(--accent);-webkit-text-fill-color:var(--accent)}
.hero p{font-size:16px;color:var(--text-2);max-width:720px;margin:0;line-height:1.6}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;margin-bottom:16px}
.card-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;background:var(--surface-2);border-bottom:1px solid var(--border-subtle)}
.card-title{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:600;color:var(--text)}
.card-title i{color:var(--text-3)}
.card-body{padding:16px}
.opt-input{width:100%;padding:9px 12px;background:var(--surface-2);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:13px;font-family:inherit}
.opt-help{font-size:11.5px;color:var(--text-3);margin-top:4px}
.opt-label{font-size:11.5px;font-weight:600;color:var(--text-2);text-transform:uppercase;letter-spacing:.04em;display:block;margin-bottom:6px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;font-family:inherit;font-size:13px;font-weight:600;border-radius:9px;border:1px solid transparent;cursor:pointer;transition:all .15s ease;white-space:nowrap}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent);box-shadow:0 1px 0 rgba(255,255,255,.12) inset,0 4px 14px var(--accent-glow)}
.btn-primary:hover{background:var(--accent-2);transform:translateY(-1px)}
.btn-primary[disabled]{opacity:.5;cursor:not-allowed;transform:none}
.btn-secondary{background:var(--surface);color:var(--text);border-color:var(--border)}
.btn-secondary:hover{background:var(--surface-2)}
.btn-ghost{background:transparent;color:var(--text-2);border-color:transparent}
.btn-ghost:hover{background:var(--surface-2);color:var(--text)}
.tag-btn{padding:6px 11px;background:var(--surface-2);border:1px solid var(--border);border-radius:6px;font-size:12px;color:var(--text-2);font-weight:500}
.tag-btn:hover{border-color:var(--accent);color:var(--accent)}
.tag-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.kv-grid{display:grid;grid-template-columns:1fr;gap:0;border:1px solid var(--border-subtle);border-radius:var(--radius);overflow:hidden}
.kv-row{display:grid;grid-template-columns:200px 1fr;gap:12px;padding:10px 14px;border-bottom:1px solid var(--border-subtle);font-size:13px;align-items:start}
.kv-row:last-child{border-bottom:none}
.kv-row:nth-child(even){background:var(--surface-2)}
.kv-key{color:var(--text-2);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.04em;font-family:'JetBrains Mono',monospace}
.kv-val{color:var(--text);word-break:break-word}
.kv-val.mono{font-family:'JetBrains Mono',monospace;font-size:12.5px}
@media (max-width:640px){.kv-row{grid-template-columns:1fr;gap:4px}.kv-key{font-size:11px}}
.codebox{padding:14px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-size:12px;line-height:1.55;overflow:auto;max-height:480px;white-space:pre-wrap;word-break:break-word;margin:0}
.codebox.json{color:var(--text)}
.section{margin:56px 0}
.section-eyebrow{display:inline-block;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);margin-bottom:8px}
.section h2{font-size:clamp(24px,4vw,32px);letter-spacing:-.03em;line-height:1.15;margin-bottom:8px}
.section-lede{font-size:15.5px;color:var(--text-2);max-width:680px;margin-bottom:24px}
.use-cases{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}
.use-case{padding:22px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg)}
.use-case-icon{width:40px;height:40px;display:grid;place-items:center;background:var(--accent-soft);border:1px solid color-mix(in srgb,var(--accent) 30%,transparent);border-radius:10px;color:var(--accent);font-size:16px;margin-bottom:14px}
.use-case h3{font-size:16px;margin-bottom:6px}
.use-case p{font-size:13.5px;color:var(--text-2);margin:0;line-height:1.55}
.faq-list{display:flex;flex-direction:column;gap:8px}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.faq-item.open{border-color:var(--border-strong)}
.faq-question{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;padding:16px 18px;background:transparent;border:none;text-align:left;cursor:pointer;color:var(--text);font-family:inherit;font-size:14.5px;font-weight:600}
.faq-question:hover{background:var(--surface-2)}
.faq-toggle{flex-shrink:0;width:22px;height:22px;display:grid;place-items:center;color:var(--text-3);transition:transform .2s ease}
.faq-item.open .faq-toggle{transform:rotate(180deg);color:var(--accent)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-answer-inner{padding:0 18px 18px;color:var(--text-2);font-size:13.5px;line-height:1.65}
.prose{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px}
.prose h3{font-size:17px;margin:24px 0 8px}
.prose h3:first-of-type{margin-top:0}
.prose p,.prose li{font-size:14px;color:var(--text-2);line-height:1.7}
.prose ul{padding-left:22px;margin:8px 0 14px}
.prose strong{color:var(--text)}
.prose code{background:var(--surface-2);padding:1px 5px;border-radius:4px;font-size:12.5px;font-family:'JetBrains Mono',monospace}
.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.related-card{display:block;padding:18px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);color:var(--text)}
.related-card:hover{border-color:var(--border-strong);transform:translateY(-2px)}
.related-name{font-weight:700;margin-bottom:4px}
.related-desc{font-size:13px;color:var(--text-2)}
.footer{margin-top:80px;padding:56px 24px 32px;background:var(--surface);border-top:1px solid var(--border-subtle)}
.footer-inner{max-width:1240px;margin:0 auto}
.footer-brand-block{max-width:1240px;margin:0 auto 40px;display:flex;flex-wrap:wrap;gap:24px;align-items:flex-start;justify-content:space-between}
.footer-brand-block .footer-brand-info{max-width:520px}
.footer-brand-block .footer-logo{display:inline-flex;align-items:center;gap:10px;font-family:'Bricolage Grotesque',sans-serif;font-size:18px;font-weight:700;color:var(--text);margin-bottom:10px}
.footer-brand-block .footer-logo i{width:32px;height:32px;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),#7c3aed);color:#fff;border-radius:8px}
.footer-brand-desc{font-size:13.5px;color:var(--text-2);line-height:1.6;margin:0 0 16px}
.footer-social{display:flex;gap:8px}
.footer-social a{width:36px;height:36px;display:grid;place-items:center;background:var(--surface-2);border:1px solid var(--border);border-radius:8px;color:var(--text-2)}
.footer-cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:28px 32px}
.footer-col h3,.footer-col summary{font-family:'Plus Jakarta Sans',sans-serif;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text);margin:0 0 14px;list-style:none;display:flex;align-items:center;justify-content:space-between}
.footer-col summary{cursor:pointer}
.footer-col summary::-webkit-details-marker{display:none}
.footer-col .toggle-icon{display:none;color:var(--text-3)}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:7px}
.footer-col a{color:var(--text-2);font-size:13px}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{max-width:1240px;margin:40px auto 0;padding-top:24px;border-top:1px solid var(--border-subtle);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:12.5px;color:var(--text-3)}
.footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom-links a{color:var(--text-3)}
.toast-container{position:fixed;top:16px;right:16px;z-index:300;display:flex;flex-direction:column;gap:8px;max-width:calc(100vw - 32px)}
.toast{display:flex;align-items:flex-start;gap:10px;padding:12px 14px;min-width:280px;max-width:380px;background:var(--surface);border:1px solid var(--border);border-radius:10px;box-shadow:var(--shadow-lg);animation:toast-in .25s cubic-bezier(.4,0,.2,1)}
.toast.removing{animation:toast-out .2s ease forwards}
@keyframes toast-in{from{transform:translateX(20px);opacity:0}to{transform:translateX(0);opacity:1}}
@keyframes toast-out{to{transform:translateX(20px);opacity:0}}
.toast-icon{flex-shrink:0;width:22px;height:22px;display:grid;place-items:center;border-radius:6px;font-size:12px}
.toast-success .toast-icon{background:var(--add-bg-strong);color:var(--add)}
.toast-error .toast-icon{background:var(--remove-bg-strong);color:var(--remove)}
.toast-warning .toast-icon{background:rgba(245,158,11,.18);color:var(--warn)}
.toast-info .toast-icon{background:var(--accent-soft);color:var(--accent)}
.toast-message{flex:1;font-size:13px;color:var(--text);line-height:1.4}
.toast-close{background:transparent;border:none;color:var(--text-3);font-size:18px;line-height:1;padding:0;cursor:pointer}
.busy{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;background:color-mix(in srgb,var(--bg) 80%,transparent);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.busy.active{display:flex}
.busy-card{display:flex;flex-direction:column;align-items:center;gap:14px;padding:28px 36px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}
.spinner{width:32px;height:32px;border:2.5px solid var(--surface-3);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.notice{padding:12px 14px;background:var(--accent-soft);border:1px solid color-mix(in srgb,var(--accent) 30%,transparent);border-radius:var(--radius);font-size:13px;color:var(--text);line-height:1.5;margin-bottom:14px;display:flex;gap:10px;align-items:flex-start}
.notice.warn{background:rgba(245,158,11,.12);border-color:rgba(245,158,11,.35)}
.notice i{color:var(--accent);margin-top:2px}
.notice.warn i{color:var(--warn)}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.row .opt-input{flex:1;min-width:200px}
.options-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.opt-field{display:flex;flex-direction:column;gap:6px}
.metric-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px}
.metric{padding:18px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg)}
.metric .m-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-3);margin-bottom:6px}
.metric .m-value{font-family:'Bricolage Grotesque',sans-serif;font-size:28px;font-weight:700;color:var(--text);line-height:1}
.metric .m-value.accent{color:var(--accent)}
.metric .m-value.add{color:var(--add)}
.metric .m-sub{font-size:12px;color:var(--text-3);margin-top:4px;font-family:'JetBrains Mono',monospace}
.action-bar{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin:16px 0 24px}
.action-spacer{flex:1}
.progress-row{display:flex;align-items:center;gap:10px}
.progress-bar{flex:1;height:6px;background:var(--surface-3);border-radius:3px;overflow:hidden}
.progress-fill{height:100%;width:0;background:linear-gradient(90deg,var(--accent),#7c3aed);transition:width .2s ease}
.progress-label{font-size:12px;color:var(--text-2);font-family:'JetBrains Mono',monospace;min-width:160px;text-align:right}
table.t{width:100%;border-collapse:collapse;font-size:13px}
table.t th,table.t td{text-align:left;padding:8px 12px;border-bottom:1px solid var(--border-subtle)}
table.t th{color:var(--text-2);font-size:11px;text-transform:uppercase;letter-spacing:.04em;background:var(--surface-2)}
table.t td.mono{font-family:'JetBrains Mono',monospace;font-size:12.5px;color:var(--text)}
table.t tr:hover td{background:var(--surface-2)}
.steps{display:flex;flex-direction:column;gap:12px;position:relative}
.steps::before{content:'';position:absolute;left:19px;top:24px;bottom:24px;width:1px;background:linear-gradient(180deg,var(--accent),transparent);opacity:.4}
.step{display:flex;gap:16px;padding:18px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}
.step-num{flex-shrink:0;width:38px;height:38px;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),#7c3aed);color:#fff;font-weight:700;font-size:15px;border-radius:10px}
.step-body h3{font-size:15px;margin-bottom:4px}
.step-body p{font-size:13.5px;color:var(--text-2);margin:0}
@media (max-width:880px){.main{padding:16px 14px 60px}.options-grid{grid-template-columns:1fr}.header{padding:12px 14px}.brand-tool{display:none}}
@media (max-width:640px){.footer{padding:40px 16px 24px}.footer-cols{grid-template-columns:1fr;gap:8px}.footer-col{border:1px solid var(--border);border-radius:10px;background:var(--surface-2);overflow:hidden}.footer-col details summary{padding:14px 16px}.footer-col details[open] summary{border-bottom:1px solid var(--border)}.footer-col details .toggle-icon{display:inline-block}.footer-col details[open] .toggle-icon{transform:rotate(180deg)}.footer-col details ul{padding:12px 16px 16px}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}
::selection{background:var(--accent-soft);color:var(--text)}