/* Papertrail — tokens ------------------------------------------------ */
:root{
  --bg:#EDF0F6; --surface:#FFFFFF; --surface-2:#F5F7FB;
  --ink:#131722; --muted:#5B6478; --line:#D9DFEA;
  --accent:#2C4BE8; --accent-soft:#E4E9FF; --signal:#B4315F; --warm:#8A5A16;
  --radius:14px; --shadow:0 1px 2px rgba(19,23,34,.05),0 8px 24px -14px rgba(19,23,34,.28);
  --display:"Bricolage Grotesque",Georgia,serif; --body:"Inter",system-ui,sans-serif; --mono:"IBM Plex Mono",ui-monospace,monospace;
  --wrap:1180px;
}
[data-theme="dark"]{
  --bg:#0E1219; --surface:#161B25; --surface-2:#1C222E;
  --ink:#E7ECF5; --muted:#94A1B6; --line:#252D3C;
  --accent:#7C97FF; --accent-soft:#1C2544; --signal:#FF8DB4; --warm:#E8B872;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px -18px rgba(0,0,0,.9);
}
@media (prefers-color-scheme:dark){
  [data-theme="auto"]{
    --bg:#0E1219; --surface:#161B25; --surface-2:#1C222E;
    --ink:#E7ECF5; --muted:#94A1B6; --line:#252D3C;
    --accent:#7C97FF; --accent-soft:#1C2544; --signal:#FF8DB4; --warm:#E8B872;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px -18px rgba(0,0,0,.9);
  }
}

/* base --------------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%}
a{color:inherit}
h1,h2,h3{font-family:var(--display);font-weight:700;line-height:1.08;letter-spacing:-.02em;margin:0}
.mono{font-family:var(--mono);font-size:.74rem;letter-spacing:.08em;text-transform:uppercase}
.wrap{width:min(100% - 2.5rem,var(--wrap));margin-inline:auto}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:0;background:var(--accent);color:#fff;padding:.6rem 1rem;z-index:99}
.skip:focus{left:.5rem;top:.5rem}
:focus-visible{outline:2.5px solid var(--accent);outline-offset:3px;border-radius:6px}

/* masthead ----------------------------------------------------------- */
.masthead{position:sticky;top:0;z-index:20;background:var(--bg);background:color-mix(in srgb,var(--bg) 88%,transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.masthead-in{display:flex;align-items:center;gap:1.25rem;height:60px}
.brand{display:flex;align-items:center;gap:.55rem;font-family:var(--display);font-weight:800;font-size:1.12rem;text-decoration:none;letter-spacing:-.02em}
.brand-mark{color:var(--accent)}
.masthead-nav{display:flex;gap:1.1rem;margin-left:auto;font-size:.9rem}
.masthead-nav a{color:var(--muted);text-decoration:none}
.masthead-nav a:hover{color:var(--ink)}
.theme-toggle{display:flex;align-items:center;gap:.45rem;background:var(--surface);border:1px solid var(--line);color:var(--muted);border-radius:99px;padding:.35rem .7rem;font:500 .74rem/1 var(--mono);text-transform:uppercase;letter-spacing:.06em;cursor:pointer}
.theme-dot{width:9px;height:9px;border-radius:50%;background:linear-gradient(90deg,var(--ink) 50%,var(--bg) 50%);border:1px solid var(--muted)}
@media (max-width:860px){.masthead-nav{display:none}.theme-toggle{margin-left:auto}}

/* hero --------------------------------------------------------------- */
.hero{padding:clamp(2.5rem,7vw,5.5rem) 0 2rem;border-bottom:1px solid var(--line);background:
  radial-gradient(120% 90% at 82% -10%,var(--accent-soft) 0%,transparent 55%)}
.eyebrow{color:var(--muted);margin:0 0 1rem}
.hero h1{font-size:clamp(2.3rem,6.4vw,4.4rem);max-width:16ch}
.swap{font-family:var(--mono);font-size:.62em;font-weight:500;letter-spacing:-.01em;text-transform:uppercase;background:var(--surface);border:1px solid var(--line);border-bottom-width:3px;border-bottom-color:var(--accent);border-radius:10px;padding:.06em .38em;display:inline-block;vertical-align:.12em}
.swap-b{border-bottom-color:var(--signal)}
.lede{color:var(--muted);font-size:1.06rem;max-width:60ch;margin:1.1rem 0 0}
.search{position:relative;display:flex;align-items:center;margin:1.8rem 0 1.2rem;max-width:600px}
.search-icon{position:absolute;left:.95rem;color:var(--muted)}
.search input{width:100%;padding:.95rem 3rem;border:1px solid var(--line);border-radius:99px;background:var(--surface);color:var(--ink);font:400 1rem/1.2 var(--body);box-shadow:var(--shadow)}
.search kbd{position:absolute;right:1rem;color:var(--muted);border:1px solid var(--line);border-radius:5px;padding:.1rem .38rem}
.formats{display:flex;flex-wrap:wrap;gap:.4rem;color:var(--muted)}
.formats span{border:1px solid var(--line);border-radius:6px;padding:.15rem .45rem;background:var(--surface);background:color-mix(in srgb,var(--surface) 60%,transparent)}

/* strips (recent / favourites) --------------------------------------- */
.strip{margin-top:2.2rem}
.strip-title{color:var(--muted);margin:0 0 .7rem}
.strip-row{display:flex;flex-wrap:wrap;gap:.5rem}
.strip-row a{display:inline-flex;align-items:center;gap:.5rem;background:var(--surface);border:1px solid var(--line);border-radius:99px;padding:.42rem .85rem;text-decoration:none;font-size:.88rem;font-weight:500}
.strip-row a:hover{border-color:var(--accent)}

/* filters ------------------------------------------------------------ */
.filters{display:flex;flex-wrap:wrap;gap:.45rem;margin:2.2rem 0 .5rem;position:sticky;top:60px;z-index:10;padding:.6rem 0;background:var(--bg);background:color-mix(in srgb,var(--bg) 92%,transparent)}
.pill{border:1px solid var(--line);background:var(--surface);color:var(--muted);border-radius:99px;padding:.42rem .95rem;font:500 .87rem/1 var(--body);cursor:pointer;transition:transform .12s ease}
.pill:hover{transform:translateY(-1px);color:var(--ink)}
.pill.is-on{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.results{color:var(--muted);margin:.2rem 0 0}

/* cards -------------------------------------------------------------- */
.cat{margin:3rem 0}
.cat-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:.4rem 1rem;margin-bottom:1.1rem;padding-bottom:.7rem;border-bottom:1px solid var(--line)}
.cat-head h2{font-size:1.6rem}
.cat-head p{color:var(--muted);margin:0;font-size:.95rem}
.count{color:var(--muted);margin-left:auto}
.grid{display:grid;gap:.85rem;grid-template-columns:repeat(auto-fill,minmax(255px,1fr))}
.card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);display:flex;flex-direction:column;transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease}
.card:hover{transform:translateY(-3px);border-color:var(--accent);border-color:color-mix(in srgb,var(--accent) 45%,var(--line));box-shadow:var(--shadow)}
.card-link{display:block;padding:1rem 1.05rem .4rem;text-decoration:none;flex:1}
.card h3{font-size:1.06rem;margin:.55rem 0 .3rem}
.card p{color:var(--muted);font-size:.87rem;margin:0}
.card-soon{background:var(--surface-2)}
.card-soon h3{color:var(--muted)}
.chips{display:inline-flex;align-items:center;gap:.3rem;font-family:var(--mono);font-size:.66rem;letter-spacing:.06em}
.chip{border:1px solid var(--line);border-radius:5px;padding:.1rem .34rem;color:var(--muted);background:var(--bg)}
.arrow{color:var(--accent)}
.card-foot{display:flex;align-items:center;justify-content:space-between;padding:.55rem 1.05rem .8rem}
.tag{font-family:var(--mono);font-size:.63rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);border:1px solid var(--line);border-radius:99px;padding:.15rem .5rem}
.card:not(.card-soon) .tag{color:var(--accent);border-color:color-mix(in srgb,var(--accent) 35%,var(--line))}
.card-soon .tag{color:var(--warm)}
.fav{background:none;border:0;color:var(--line);cursor:pointer;padding:.2rem;line-height:0}
.fav:hover{color:var(--signal)}
.fav[aria-pressed="true"]{color:var(--signal)}
.fav[aria-pressed="true"] svg path{fill:currentColor}
.card[hidden]{display:none}

/* prose -------------------------------------------------------------- */
.prose{max-width:68ch;margin:3rem 0}
.prose h2{font-size:1.45rem;margin:2rem 0 .6rem}
.prose p{color:var(--muted)}
.prose a{color:var(--accent)}
.steps,.tips{color:var(--muted);padding-left:1.15rem}
.steps li,.tips li{margin:.5rem 0}
.steps strong,.tips strong{color:var(--ink)}

/* tool page ---------------------------------------------------------- */
.tool-wrap{padding-bottom:3rem}
.crumbs ol{display:flex;flex-wrap:wrap;gap:.45rem;list-style:none;padding:0;margin:1.2rem 0;font-size:.83rem;color:var(--muted)}
.crumbs li+li::before{content:"/";margin-right:.45rem;color:var(--line)}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--accent)}
.tool-head{margin:.5rem 0 1.5rem}
.tool-head h1{font-size:clamp(2rem,5vw,3.1rem);margin:.6rem 0 0}
.badges{display:flex;flex-wrap:wrap;gap:.4rem;margin:1rem 0 0}
.tag-live{color:var(--accent);border-color:color-mix(in srgb,var(--accent) 35%,var(--line))}
.notice{background:var(--accent-soft);border:1px solid color-mix(in srgb,var(--accent) 25%,var(--line));border-radius:var(--radius);padding:.9rem 1.05rem;font-size:.92rem;margin:0 0 1.5rem}
.notice strong{font-family:var(--display)}
.workbench{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:clamp(1rem,3vw,1.8rem);box-shadow:var(--shadow)}
.tool-grid{display:grid;gap:2.5rem;grid-template-columns:minmax(0,1fr) 300px;align-items:start}
@media (max-width:900px){.tool-grid{grid-template-columns:1fr}}
.side{position:sticky;top:76px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem;margin-top:3rem}
.side-title{color:var(--muted);margin:0 0 .6rem}
.side-list{list-style:none;margin:0;padding:0}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:.6rem;padding:.55rem 0;border-bottom:1px solid var(--line);text-decoration:none;font-size:.92rem;font-weight:500}
.side-list a:hover{color:var(--accent)}
.side-all{display:inline-block;margin-top:.9rem;font-size:.87rem;color:var(--accent);text-decoration:none}
.faq details{border-bottom:1px solid var(--line);padding:.2rem 0}
.faq summary{cursor:pointer;padding:.7rem 0;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:1rem}
.faq summary::after{content:"+";color:var(--accent);font-family:var(--mono)}
.faq details[open] summary::after{content:"–"}
.faq summary::-webkit-details-marker{display:none}
.faq p{margin:0 0 .9rem;color:var(--muted)}

/* tool UI ------------------------------------------------------------ */
.drop{border:2px dashed var(--line);border-radius:16px;padding:clamp(1.5rem,5vw,2.8rem) 1rem;text-align:center;background:var(--surface-2);transition:border-color .15s ease,background .15s ease}
.drop.is-over{border-color:var(--accent);background:var(--accent-soft)}
.drop h2{font-size:1.15rem;margin-bottom:.3rem}
.drop p{color:var(--muted);font-size:.9rem;margin:.3rem 0 1rem}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;background:var(--accent);color:#fff;border:0;border-radius:10px;padding:.72rem 1.3rem;font:600 .95rem/1 var(--body);cursor:pointer;text-decoration:none}
.btn:hover{filter:brightness(1.08)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn-row{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1.1rem}
.field{display:block;margin:1rem 0}
.field span{display:block;font-family:var(--mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:.35rem}
.field input,.field select,.field textarea{width:100%;padding:.7rem .85rem;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);font:400 .95rem/1.5 var(--body)}
.field textarea{min-height:190px;font-family:var(--mono);font-size:.82rem;text-transform:none;letter-spacing:0}
.field-row{display:grid;gap:.8rem;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.filecard{display:flex;align-items:center;gap:.85rem;background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:.8rem .95rem;margin-bottom:.6rem}
.filecard .fi-name{font-weight:600;font-size:.93rem;word-break:break-all}
.filecard .fi-meta{color:var(--muted);font-family:var(--mono);font-size:.7rem;letter-spacing:.05em}
.filecard .fi-icon{width:34px;height:34px;flex:none;display:grid;place-items:center;border-radius:8px;background:var(--accent-soft);color:var(--accent);font:500 .6rem/1 var(--mono)}
.filecard button{margin-left:auto;background:none;border:0;color:var(--muted);cursor:pointer;font-size:1.1rem}
.bar{height:6px;border-radius:99px;background:var(--surface-2);overflow:hidden;margin:1rem 0 .4rem}
.bar i{display:block;height:100%;width:0;background:var(--accent);transition:width .25s ease}
.status{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.msg{border-radius:12px;padding:.8rem 1rem;margin-top:1rem;font-size:.92rem}
.msg-ok{background:var(--accent-soft);background:color-mix(in srgb,var(--accent) 10%,transparent);border:1px solid var(--line);border-color:color-mix(in srgb,var(--accent) 35%,var(--line));color:var(--ink)}
.msg-err{background:var(--surface-2);background:color-mix(in srgb,var(--signal) 12%,transparent);border:1px solid var(--signal);border-color:color-mix(in srgb,var(--signal) 40%,var(--line));color:var(--ink)}
.out{white-space:pre-wrap;word-break:break-word;font-family:var(--mono);font-size:.82rem;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:.9rem;max-height:420px;overflow:auto}
.stats{display:grid;gap:.6rem;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));margin-top:1rem}
.stat{background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:.75rem}
.stat b{display:block;font-family:var(--display);font-size:1.5rem;line-height:1.1}
.stat span{color:var(--muted);font-family:var(--mono);font-size:.64rem;letter-spacing:.08em;text-transform:uppercase}
.thumbs{display:grid;gap:.6rem;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));margin-top:1rem}
.thumbs figure{margin:0;background:var(--surface-2);border:1px solid var(--line);border-radius:10px;padding:.4rem;text-align:center}
.thumbs img{border-radius:6px;display:block;width:100%;height:auto}
.thumbs figcaption{font-family:var(--mono);font-size:.62rem;color:var(--muted);padding-top:.35rem}
.soon{text-align:center;padding:1.5rem 1rem}
.soon h2{font-size:1.3rem;margin-bottom:.4rem}
.soon p{color:var(--muted);max-width:52ch;margin:.4rem auto 0}

/* footer ------------------------------------------------------------- */
.footer{border-top:1px solid var(--line);margin-top:3rem;padding:2.5rem 0 3rem;background:var(--surface)}
.foot-grid{display:grid;gap:1.5rem;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.foot-col h3{font-size:.78rem;font-family:var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:500}
.foot-col ul{list-style:none;margin:.6rem 0 0;padding:0}
.foot-col li{margin:.28rem 0}
.foot-col a{color:var(--ink);text-decoration:none;font-size:.87rem}
.foot-col a:hover{color:var(--accent)}
.foot-note{color:var(--muted);font-size:.82rem;margin-top:2rem;border-top:1px solid var(--line);padding-top:1.2rem}

@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* server-rendered form (no-JavaScript path) */
.server-form .drop{margin-bottom:1rem}
.file-input{display:block;width:100%;max-width:420px;margin:0 auto;padding:.7rem;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink);font:400 .9rem/1.3 var(--body)}
.file-input::file-selector-button{margin-right:.8rem;background:var(--accent);color:#fff;border:0;border-radius:8px;padding:.5rem .9rem;font:600 .85rem/1 var(--body);cursor:pointer}
.server-form .status{color:var(--muted)}

/* Pointer-aware hover: touch devices kept cards stuck in the lifted state. */
@media (hover:none){
  .card:hover{transform:none;box-shadow:none}
  .pill:hover{transform:none}
}
/* Long results and file names must not force a horizontal scrollbar on phones. */
.out{overflow-x:auto}
.msg{overflow-wrap:anywhere}
@media (max-width:520px){
  .btn-row .btn{width:100%}
  .filters{top:56px}
}
@media print{
  .masthead,.footer,.filters,.side,.btn-row,.fav{display:none}
  .workbench,.card{box-shadow:none;border-color:#ccc}
}