/* WS Link public pages — graphite light ramp, one cobalt accent, IBM Plex Sans Thai + Plex Mono.
   The variable names (--bg --surface --ink --ink2 --muted --pri --pri-ink --r) are also injected by
   owner-designed desktop pages, so components below read them instead of hard-coded colors. */
:root{
  --bg:#fafafa;--surface:#fff;--raised:#f4f4f5;--ink:#171717;--ink2:#525252;--muted:#737373;--faint:#a3a3a3;
  --line:color-mix(in srgb,var(--ink) 9%,transparent);--line2:color-mix(in srgb,var(--ink) 16%,transparent);
  --pri:#1d4ed8;--pri-ink:#fff;--ok:#15803d;--err:#dc2626;--r:12px;
  --ease:cubic-bezier(.22,1,.36,1);
  --font:'IBM Plex Sans Thai','IBM Plex Sans','Noto Sans Thai',system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--pri);text-decoration-thickness:1px;text-underline-offset:3px}
h1,h2,h3{font-weight:500}
b,strong{font-weight:500}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px}
.narrow{max-width:800px}
.muted{color:var(--muted)}.small{font-size:14px}
.ico{width:16px;height:16px;flex:none;display:block}

/* buttons & controls */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:40px;border:1px solid transparent;border-radius:10px;padding:0 16px;font:500 15px/1 var(--font);font-family:inherit;cursor:pointer;text-decoration:none;white-space:nowrap;transition:background-color .15s var(--ease),border-color .15s var(--ease),color .15s var(--ease),transform .12s var(--ease)}
.btn:active:not([disabled]){transform:scale(.98)}
.btn:focus-visible{outline:2px solid var(--pri);outline-offset:2px}
.btn-primary{background:var(--pri);color:var(--pri-ink);box-shadow:inset 0 1px 0 rgba(255,255,255,.12)}
.btn-primary:hover{background:color-mix(in srgb,var(--pri) 86%,#000)}
.btn-primary[disabled]{opacity:.65;cursor:progress}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line2)}
.btn-ghost:hover{background:color-mix(in srgb,var(--ink) 4%,var(--surface))}
.btn-sm{height:32px;padding:0 12px;font-size:14px;border-radius:8px}
.btn-lg{height:52px;padding:0 24px;font-size:16px}
.btn-danger{background:var(--surface);color:var(--err);border-color:color-mix(in srgb,var(--err) 25%,transparent)}
.btn-danger:hover{background:color-mix(in srgb,var(--err) 6%,var(--surface))}
.select,input[type=text],input[type=url],input[type=password],textarea{font:inherit;color:var(--ink);background:var(--surface);border:1px solid var(--line2);border-radius:10px;padding:10px 12px;width:100%;transition:border-color .15s var(--ease),box-shadow .15s var(--ease)}
.select{width:auto;height:32px;padding:0 8px;font-size:14px;border-radius:8px}
input::placeholder,textarea::placeholder{color:var(--faint)}
input:focus,textarea:focus,.select:focus{outline:none;border-color:var(--pri);box-shadow:0 0 0 3px color-mix(in srgb,var(--pri) 14%,transparent)}

/* top bar */
.topbar{position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--bg) 90%,transparent);-webkit-backdrop-filter:saturate(1.4) blur(10px);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.topbar-in{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.brand{display:flex;align-items:center;gap:8px;font-weight:500;font-size:17px;color:var(--ink);text-decoration:none}
.brand svg{flex:none}
.topnav{display:flex;align-items:center;gap:24px}
.topnav a:not(.btn){color:var(--ink2);text-decoration:none;font-size:15px;transition:color .15s var(--ease)}
.topnav a:not(.btn):hover{color:var(--ink)}
.navmenu{display:none;position:relative}
.navmenu summary{list-style:none;width:40px;height:40px;display:grid;place-items:center;border:1px solid var(--line2);border-radius:10px;background:var(--surface);cursor:pointer;color:var(--ink)}
.navmenu summary::-webkit-details-marker{display:none}
.navmenu summary .ico{width:18px;height:18px}
.navmenu nav{position:absolute;right:0;top:48px;min-width:220px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:8px;box-shadow:0 8px 24px rgba(0,0,0,.08);display:flex;flex-direction:column;animation:menuIn .18s var(--ease)}
.navmenu nav a{display:flex;align-items:center;height:44px;padding:0 12px;border-radius:8px;color:var(--ink);text-decoration:none;font-size:15px}
.navmenu nav a:hover{background:var(--raised)}
@keyframes menuIn{from{opacity:0;transform:translateY(-4px)}}

/* hero — text and the shortener on the left, the routed-link preview on the right */
.hero{padding:96px 0 64px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:64px;align-items:center}
.hero-main{min-width:0}
.hero h1{font-size:clamp(40px,4.4vw,56px);line-height:1.18;margin:0 0 20px;letter-spacing:-.02em;font-weight:500}
.h1-sub{color:var(--muted)}
.lead{color:var(--ink2);font-size:18px;line-height:1.65;margin:0 0 32px;max-width:36rem}
/* legacy helpers, kept for pages that still reference them */
.pill{display:inline-block;font-size:13px;color:var(--muted);margin-bottom:16px}
.grad{color:var(--pri)}

/* shortener */
.shorten-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:12px;box-shadow:0 1px 2px rgba(0,0,0,.04),0 8px 24px rgba(0,0,0,.04);text-align:left}
.shorten-row{display:flex;gap:8px}
.input-wrap{position:relative;flex:1;min-width:0}
.in-ic{position:absolute;left:16px;top:50%;width:20px;height:20px;transform:translateY(-50%);color:var(--muted);pointer-events:none}
.input-wrap input{height:52px;padding-left:48px;font-size:16px;border-radius:10px}
.alias{margin:12px 4px 0}
.alias summary{cursor:pointer;color:var(--ink2);font-size:14px;width:max-content;max-width:100%}
.alias summary:hover{color:var(--ink)}
.alias-row{display:flex;align-items:stretch;margin-top:12px;border:1px solid var(--line2);border-radius:10px;overflow:hidden;background:var(--surface)}
.alias-row:focus-within{border-color:var(--pri);box-shadow:0 0 0 3px color-mix(in srgb,var(--pri) 14%,transparent)}
.prefix{display:flex;align-items:center;padding:0 4px 0 12px;color:var(--muted);font:13px var(--mono);white-space:nowrap;background:var(--raised);border-right:1px solid var(--line)}
.alias-row input{border:0;box-shadow:none!important;border-radius:0;font-family:var(--mono);font-size:14px}
.hint{font-size:13px;color:var(--muted);margin:8px 0 0}
.form-msg{min-height:0;margin:12px 4px 0;font-size:14px;color:var(--err)}
.form-msg:empty{display:none}
.form-msg.ok{color:var(--ok)}
.consent{margin:12px 4px 4px;font-size:13px;color:var(--muted)}
.disabled-card{text-align:center;color:var(--ink2);padding:24px}
.result-card{margin-top:12px;display:flex;align-items:center;gap:16px;background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--pri);border-radius:12px;padding:16px 16px 16px 20px;text-align:left;animation:pop .3s var(--ease)}
@keyframes pop{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.result-main{flex:1;min-width:0}
.result-label{font-size:13px;color:var(--muted)}
.result-short{display:block;font:500 20px/1.4 var(--mono);color:var(--ink);text-decoration:none;word-break:break-all;margin:2px 0}
.result-short:hover{color:var(--pri)}
.result-target{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.result-actions{display:flex;gap:8px}

/* route preview (signature: a patch cord from destination to short code) */
.route{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:0 1px 2px rgba(0,0,0,.04),0 16px 40px rgba(0,0,0,.06);min-width:0}
.route-head{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px}
.route-live{width:8px;height:8px;border-radius:50%;background:#16a34a}
.route-path{position:relative;display:flex;flex-direction:column;gap:20px;padding-left:24px}
.route-path::before{content:"";position:absolute;left:4px;top:12px;bottom:12px;width:2px;border-radius:1px;background:linear-gradient(var(--line2),var(--pri))}
.route-node{position:relative;display:flex;flex-direction:column;gap:4px;min-width:0}
.route-node::before{content:"";position:absolute;left:-24px;top:6px;width:10px;height:10px;border-radius:50%;background:var(--surface);border:2px solid var(--line2)}
.route-node.to::before{border-color:var(--pri);background:var(--pri)}
.route-lbl{font-size:12px;color:var(--muted)}
.route-long{font:13px/1.5 var(--mono);color:var(--ink2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.route-short{font:500 18px/1.4 var(--mono);color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.route-short b{color:var(--ink);font-weight:500}
.route-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:24px 0 16px;padding-top:20px;border-top:1px solid var(--line)}
.route-stats b{display:block;font:500 22px/1.2 var(--mono);color:var(--ink);font-variant-numeric:tabular-nums}
.route-stats span{font-size:12px;color:var(--muted)}
.route-chart{display:flex;align-items:flex-end;gap:4px;height:96px;border-bottom:1px solid var(--line2)}
.route-chart i{flex:1;background:color-mix(in srgb,var(--ink) 14%,transparent);border-radius:2px 2px 0 0}
.route-chart i.now{background:var(--pri)}
.route-x{display:flex;justify-content:space-between;font:11px var(--mono);color:var(--muted);margin-top:8px}

/* history */
.history{padding:32px 0 16px}
.home .history .wrap.narrow{max-width:1200px}
.section-head{display:flex;align-items:center;justify-content:space-between;gap:16px}
.section-head h2{margin:0;font-size:22px}
.history .muted.small{margin:4px 0 0}
.history-list{margin-top:16px;background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.h-item{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:16px;align-items:center;padding:12px 16px 12px 20px;border-top:1px solid var(--line)}
.h-item:first-child{border-top:0}
.h-main{min-width:0}
.h-short{font:500 15px/1.5 var(--mono);color:var(--ink);text-decoration:none}
.h-short:hover{color:var(--pri)}
.h-target{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.h-meta{font-size:12px;color:var(--muted);text-align:right;white-space:nowrap}
.h-meta b{display:block;color:var(--ink);font:500 16px/1.3 var(--mono);font-variant-numeric:tabular-nums}
.h-actions{display:flex;gap:8px}
.badge{display:inline-block;font-size:12px;font-weight:500;line-height:20px;padding:0 8px;border-radius:6px;background:var(--raised);color:var(--ink2);margin-left:8px;vertical-align:middle;font-family:var(--font)}
.badge.off{background:color-mix(in srgb,var(--err) 8%,var(--surface));color:var(--err)}
.empty{padding:32px;text-align:center;color:var(--muted)}

/* features */
.features{padding:64px 0 96px}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.feat{padding-top:24px;border-top:1px solid var(--line)}
.feat-ic{width:40px;height:40px;display:grid;place-items:center;border-radius:10px;background:var(--surface);border:1px solid var(--line);color:var(--ink2);font-size:20px}
.feat-ic .ico{width:20px;height:20px}
.feat h3{margin:16px 0 4px;font-size:17px}
.feat p{margin:0;color:var(--ink2);font-size:15px}

/* footer */
.foot{border-top:1px solid var(--line);color:var(--muted);font-size:14px}
.foot-in{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-top:24px;padding-bottom:24px;flex-wrap:wrap}
.foot nav{display:flex;gap:20px;flex-wrap:wrap}
.foot a{color:var(--ink2);text-decoration:none}
.foot a:hover{color:var(--ink)}

/* toast */
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,8px);background:#171717;color:#fafafa;padding:10px 16px;border-radius:10px;font-size:14px;opacity:0;pointer-events:none;transition:opacity .2s var(--ease),transform .2s var(--ease);z-index:60;max-width:calc(100vw - 32px);box-shadow:0 8px 24px rgba(0,0,0,.18)}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* message / doc pages */
.msg-main{min-height:calc(100vh - 140px);display:grid;place-items:center;padding:48px 16px}
.msg-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:40px;text-align:center;max-width:520px;width:100%}
.msg-code{display:inline-block;font:500 13px/1 var(--mono);color:var(--muted);background:var(--raised);border-radius:6px;padding:6px 10px;letter-spacing:.02em}
.msg-card h1{margin:16px 0 8px;font-size:24px;line-height:1.35}
.msg-card p{color:var(--ink2);margin:0 0 8px}
.msg-actions{display:flex;gap:8px;justify-content:center;margin-top:24px;flex-wrap:wrap}
code{font-family:var(--mono);font-size:.9em;background:var(--raised);border-radius:4px;padding:2px 6px}
.doc{padding-top:48px;padding-bottom:80px}
.doc h1{font-size:32px;line-height:1.3;margin:0 0 4px}
.doc h2{font-size:18px;margin:32px 0 8px}
.doc p,.doc li{color:var(--ink2)}
.doc ul{padding-left:20px}
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:24px;display:flex;flex-direction:column;gap:16px;margin-top:24px}
.form-card label{display:flex;flex-direction:column;gap:8px;font-weight:500;font-size:14px}
.form-card .select{width:100%;height:44px;padding:0 12px;font-size:16px;border-radius:10px}
.form-card .btn{align-self:flex-start}
.req{color:var(--err)}

/* phone frame (/mobile on desktop) */
.frame-page{background:#141415;min-height:100vh;color:#ededed}
.frame-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;padding:12px 24px;border-bottom:1px solid rgba(255,255,255,.08);background:rgba(20,20,21,.9);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);position:sticky;top:0;z-index:5;flex-wrap:wrap}
.frame-page .brand{color:#ededed}
.frame-title{font-size:14px;color:#a1a1a6;display:flex;align-items:center;gap:8px}
.frame-title b{color:#ededed;font-weight:500}
.dot{width:8px;height:8px;border-radius:50%;background:#4cc38a}
.frame-tools{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.frame-page .btn-ghost{background:#232325;color:#ededed;border-color:rgba(255,255,255,.1)}
.frame-page .btn-ghost:hover{background:#2c2c2f}
.frame-page .btn-primary{background:#ededed;color:#141415;box-shadow:none}
.frame-page .btn-primary:hover{background:#fff}
.frame-page .select{background:#232325;color:#ededed;border-color:rgba(255,255,255,.1)}
.frame-page .select option{color:#171717;background:#fff}
.frame-stage{display:flex;flex-direction:column;align-items:center;padding:32px 16px}
.phone{--w:393px;--h:852px;position:relative;width:calc(var(--w) + 24px);height:min(calc(var(--h) + 24px),calc(100vh - 136px));min-height:560px;padding:12px;border-radius:52px;background:#0a0a0a;box-shadow:0 0 0 1px #2c2c2f,0 0 0 8px #19191b,0 32px 80px rgba(0,0,0,.5);transition:width .3s var(--ease)}
.phone iframe{display:block;width:100%;height:100%;border:0;border-radius:40px;background:#fff}
.phone-notch{position:absolute;top:4px;left:50%;transform:translateX(-50%);width:64px;height:4px;border-radius:4px;background:#2c2c2f;z-index:2;pointer-events:none}
.frame-note{margin-top:20px;font-size:13px;color:#85858b;text-align:center}

@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:48px}
  .route{max-width:560px}
}
@media (max-width:820px){
  .topnav{display:none}
  .navmenu{display:block}
  .wrap{padding:0 16px}
  .hero{padding:48px 0 40px}
  .hero h1{font-size:clamp(32px,8.6vw,40px);line-height:1.22}
  .lead{font-size:16px;margin-bottom:24px}
  .shorten-row{flex-direction:column}
  .shorten-row .btn{width:100%}
  .result-card{flex-direction:column;align-items:stretch}
  .result-actions .btn{flex:1}
  .route{padding:20px}
  .route-stats b{font-size:18px}
  .route-chart{height:72px}
  .h-item{grid-template-columns:minmax(0,1fr) auto;padding:12px 16px}
  .h-actions{grid-column:1/-1}
  .h-actions .btn{flex:1}
  .feat-grid{grid-template-columns:1fr;gap:24px}
  .features{padding:40px 0 64px}
  .frame-title{display:none}
  .frame-bar{padding:12px 16px}
  .msg-card{padding:32px 20px}
  .doc h1{font-size:26px}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}