/* Lumen — compressor page shell.
   Self-contained so each tool in /compress can be opened, tested and rewritten
   on its own. The tokens are copied from the app's core-stylesheets rather than
   imported so these pages do not depend on the SPA's ten stylesheets or on any
   global the main app sets. */

:root{
  --paper:#0d0d10; --ink:#f3f1ea; --soft:#8f8a80; --dim:#575349;
  --panel:#121216; --panel2:#1b1b20; --panel3:#232329;
  --surface:#15151a; --surface-2:#1b1b20; --surface-3:#222228; --surface-4:#2a2a32;
  --fg:#f5f3ef; --muted:#8b8794;
  --accent:#ff5e3a; --accent-h:#ff7a5c; --accent-ink:#fff;
  --ok:#4dbb7d; --err:#e0645a; --warn:#e0a93f;
  --border:#26262c; --border-s:rgba(255,255,255,.12); --border-strong:#3a3a42;
  --line:rgba(255,255,255,.09); --hairline:rgba(255,255,255,.04);
  --sans:'Space Grotesk',system-ui,-apple-system,Segoe UI,sans-serif;
  --serif:'Fraunces',Georgia,serif;
  --mono:ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;
  --r-xs:6px; --r-sm:9px; --r-md:13px; --r-lg:18px; --r-full:999px;
  --ease:cubic-bezier(.2,.8,.2,1);
  --shadow-sm:0 2px 6px rgba(0,0,0,.28),0 8px 22px -6px rgba(0,0,0,.36);
  --shadow-md:0 10px 26px -8px rgba(0,0,0,.6),0 3px 8px -3px rgba(0,0,0,.4);
  --ring:0 0 0 3px rgba(255,122,92,.34);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

html,body{height:100%}
body{
  background:radial-gradient(circle at 18% 8%,#1b1a24 0%,#0c0c10 45%);
  color:var(--fg);
  font-family:var(--sans);
  font-size:15px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

/* ---------- layout ---------- */

.topbar{
  position:sticky; top:0; z-index:40;
  display:flex; align-items:center; gap:14px;
  padding:12px 22px;
  background:rgba(13,13,16,.82);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.brand{
  display:flex; align-items:center; gap:9px;
  font-family:var(--serif); font-size:19px; letter-spacing:.2px;
  color:var(--ink); text-decoration:none;
}
.brand .dot{
  width:9px; height:9px; border-radius:50%;
  background:var(--accent); box-shadow:0 0 0 4px rgba(255,94,58,.16);
}
.topnav{display:flex; gap:2px; margin-left:auto; flex-wrap:wrap}
.topnav a{
  padding:6px 12px; border-radius:var(--r-full);
  color:var(--muted); text-decoration:none;
  font-size:13.5px; font-weight:500;
  border:1px solid transparent;
  transition:color .15s var(--ease),background .15s var(--ease);
}
.topnav a:hover{color:var(--fg);background:var(--surface-2)}
.topnav a[aria-current="page"]{
  color:var(--accent-ink); background:var(--accent); border-color:var(--accent-h);
}

.wrap{max-width:1080px;margin:0 auto;padding:30px 22px 90px}

.tool-head{display:flex;align-items:flex-start;gap:18px;margin-bottom:24px;flex-wrap:wrap}
.tool-title{font-family:var(--serif);font-size:clamp(28px,4.4vw,40px);line-height:1.1;color:var(--ink);font-weight:600}
.tool-sub{color:var(--muted);font-size:14.5px;margin-top:7px;max-width:70ch}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-full);
  background:rgba(77,187,125,.13);border:1px solid rgba(77,187,125,.3);
  color:var(--ok);font-size:12px;font-weight:600;letter-spacing:.2px;
}

.twrap{display:flex;flex-direction:column;gap:14px}

.card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:18px;
}

/* ---------- drop zone ---------- */

.drop{
  position:relative;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;min-height:210px;padding:34px 22px;
  border:1.5px dashed var(--border-strong);
  border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(255,255,255,.018),transparent);
  color:var(--muted);text-align:center;cursor:pointer;
  transition:border-color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease);
}
.drop:hover{border-color:var(--accent);background:rgba(255,94,58,.045)}
.drop.over{border-color:var(--accent);background:rgba(255,94,58,.09);transform:scale(1.005)}
.drop svg{width:38px;height:38px;color:var(--soft);opacity:.85}
.drop .serif{font-family:var(--serif);font-size:20px;color:var(--ink)}
.drop input[type=file]{display:none}

/* ---------- options ---------- */

.copt-title{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-weight:600;color:var(--ink);margin-bottom:14px;font-size:14.5px;
  overflow-wrap:anywhere;
}
.copt-title .dim{color:var(--muted);font-weight:400;font-size:13px}

.opts{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px}
.opts.wide{grid-template-columns:1fr}

.fld{display:flex;flex-direction:column;gap:6px}
.fld > span{
  font-size:11.5px;font-weight:600;letter-spacing:.5px;
  text-transform:uppercase;color:var(--muted);
}
.fld > span b{color:var(--accent-h);font-weight:700}

select,input[type=number],input[type=text]{
  width:100%;padding:9px 11px;
  background:var(--surface-2);
  border:1px solid var(--border);
  border-radius:var(--r-sm);
  color:var(--fg);font:inherit;font-size:14px;
  transition:border-color .15s var(--ease);
}
select:hover,input:hover{border-color:var(--border-strong)}
select:focus,input:focus{outline:none;border-color:var(--accent);box-shadow:var(--ring)}

input[type=range]{
  -webkit-appearance:none;appearance:none;
  width:100%;height:22px;background:transparent;cursor:pointer;
}
input[type=range]::-webkit-slider-runnable-track{height:4px;border-radius:2px;background:var(--surface-4)}
input[type=range]::-moz-range-track{height:4px;border-radius:2px;background:var(--surface-4)}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;appearance:none;
  width:15px;height:15px;margin-top:-5.5px;border-radius:50%;
  background:var(--accent);border:2px solid var(--paper);
  box-shadow:0 0 0 1px var(--accent-h);
}
input[type=range]::-moz-range-thumb{
  width:15px;height:15px;border-radius:50%;border:2px solid var(--paper);
  background:var(--accent);box-shadow:0 0 0 1px var(--accent-h);
}
input[type=range]:focus-visible::-webkit-slider-thumb{box-shadow:var(--ring)}

.check{display:flex;align-items:center;gap:9px;cursor:pointer;font-size:14px;color:var(--fg);text-transform:none;letter-spacing:0;font-weight:400}
.check input{width:16px;height:16px;accent-color:var(--accent);cursor:pointer}

.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.spacer{flex:1}

/* ---------- buttons ---------- */

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:9px 16px;border-radius:var(--r-sm);
  border:1px solid var(--border);background:var(--surface-2);color:var(--fg);
  font:inherit;font-size:14px;font-weight:500;cursor:pointer;
  transition:background .15s var(--ease),border-color .15s var(--ease),transform .08s var(--ease);
}
.btn:hover:not(:disabled){background:var(--surface-3);border-color:var(--border-strong)}
.btn:active:not(:disabled){transform:translateY(1px)}
.btn:disabled{opacity:.42;cursor:not-allowed}
.btn.primary{background:var(--accent);border-color:var(--accent-h);color:var(--accent-ink);font-weight:600}
.btn.primary:hover:not(:disabled){background:var(--accent-h)}
.btn.danger{border-color:rgba(224,100,90,.4);color:var(--err)}
.btn.danger:hover:not(:disabled){background:rgba(224,100,90,.12)}
.btn.sm{padding:6px 11px;font-size:13px}
.btn:focus-visible{outline:none;box-shadow:var(--ring)}

/* ---------- progress ---------- */

.cprog{display:flex;flex-direction:column;gap:10px}
.cprog .lbl{font-size:13.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.pbar{height:5px;border-radius:3px;background:var(--surface-4);overflow:hidden}
.pbar i{
  display:block;height:100%;width:0;border-radius:3px;
  background:linear-gradient(90deg,var(--accent),var(--accent-h));
  transition:width .3s var(--ease);
}
.pbar.indet i{
  width:34% !important;
  animation:slide 1.15s var(--ease) infinite;
}
@keyframes slide{0%{transform:translateX(-100%)}100%{transform:translateX(330%)}}

/* ---------- results ---------- */

.cres{display:flex;flex-direction:column;gap:13px}
.res-meta{display:flex;align-items:center;gap:11px;flex-wrap:wrap}
.res-meta .r-name{font-weight:600;color:var(--ink);overflow-wrap:anywhere}
.res-meta .r-size{color:var(--muted);font-variant-numeric:tabular-nums}
.r-prev{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--border);background:var(--surface)}
.r-prev img,.r-prev video{display:block;width:100%;max-height:460px;object-fit:contain;background:#000}
.r-prev .hint{padding:14px}

.delta{display:inline-flex;align-items:center;gap:5px;padding:2px 9px;border-radius:var(--r-full);font-size:12.5px;font-weight:700;font-variant-numeric:tabular-nums}
.delta.good{background:rgba(77,187,125,.14);color:var(--ok);border:1px solid rgba(77,187,125,.28)}
.delta.bad{background:rgba(224,100,90,.14);color:var(--err);border:1px solid rgba(224,100,90,.28)}
.delta.same{background:var(--surface-3);color:var(--muted);border:1px solid var(--border)}

.hint{color:var(--muted);font-size:13.5px;line-height:1.6}
.hint b{color:var(--fg);font-weight:600}
.hint code{font-family:var(--mono);font-size:12px;background:var(--surface-3);padding:1px 5px;border-radius:4px}

/* ---------- file list ---------- */

.flist{display:flex;flex-direction:column;gap:8px}
.frow{
  display:flex;align-items:center;gap:13px;
  padding:10px 13px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);
}
.frow img,.frow .ph{
  width:46px;height:46px;flex:0 0 46px;border-radius:var(--r-sm);
  object-fit:cover;background:var(--surface-3);
  display:flex;align-items:center;justify-content:center;color:var(--dim);font-size:11px;
}
.frow .meta{min-width:0;flex:1}
.frow .nm{font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.frow .sz{color:var(--muted);font-size:13px;font-variant-numeric:tabular-nums}
.frow .tb{display:flex;gap:6px;flex-shrink:0}
.icon-btn{
  width:32px;height:32px;display:flex;align-items:center;justify-content:center;
  border-radius:var(--r-sm);border:1px solid var(--border);
  background:var(--surface-2);color:var(--muted);cursor:pointer;font-size:15px;
  transition:color .15s var(--ease),border-color .15s var(--ease);
}
.icon-btn:hover{color:var(--fg);border-color:var(--border-strong)}
.icon-btn.danger:hover{color:var(--err);border-color:rgba(224,100,90,.4)}

/* ---------- comparison table ---------- */

.cmp{width:100%;border-collapse:collapse;font-size:13.5px;font-variant-numeric:tabular-nums}
.cmp th,.cmp td{padding:8px 10px;text-align:right;border-bottom:1px solid var(--hairline)}
.cmp th:first-child,.cmp td:first-child{text-align:left}
.cmp thead th{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.5px;font-weight:600}
.cmp tbody tr.pick{background:rgba(255,94,58,.09)}
.cmp tbody tr.pick td:first-child{box-shadow:inset 2px 0 0 var(--accent);font-weight:600}
.cmp .skipped{color:var(--dim)}
.cmp .warnv{color:var(--warn)}

/* ---------- toast ---------- */

#toasts{
  position:fixed;left:50%;bottom:26px;transform:translateX(-50%);
  z-index:100;display:flex;flex-direction:column;gap:8px;align-items:center;
  pointer-events:none;width:min(560px,calc(100vw - 32px));
}
.toast{
  padding:10px 16px;border-radius:var(--r-full);
  background:var(--surface-3);border:1px solid var(--border-strong);
  color:var(--fg);font-size:14px;box-shadow:var(--shadow-md);
  animation:rise .28s var(--ease);max-width:100%;text-align:center;
}
.toast.ok{background:rgba(77,187,125,.15);border-color:rgba(77,187,125,.4);color:#b6eccb}
.toast.err{background:rgba(224,100,90,.15);border-color:rgba(224,100,90,.4);color:#f6c4bf}
@keyframes rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ---------- notes / footer ---------- */

.note{
  border-left:2px solid var(--border-strong);
  padding:2px 0 2px 14px;color:var(--muted);font-size:13.5px;line-height:1.65;
}
.note.warn{border-color:var(--warn)}
.note b{color:var(--fg)}
details.why{margin-top:10px}
details.why summary{cursor:pointer;color:var(--muted);font-size:13.5px;list-style:none}
details.why summary::-webkit-details-marker{display:none}
details.why summary::before{content:'▸ ';color:var(--accent)}
details.why[open] summary::before{content:'▾ '}

.foot{margin-top:40px;padding-top:18px;border-top:1px solid var(--border);color:var(--dim);font-size:12.5px}
.foot a{color:var(--muted)}

.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

@media (max-width:640px){
  .wrap{padding:20px 15px 70px}
  .topbar{padding:10px 15px;gap:10px}
  .brand span{display:none}
  .topnav a{padding:5px 9px;font-size:12.5px}
  .opts{grid-template-columns:1fr}
  .card{padding:14px}
  .frow img,.frow .ph{width:38px;height:38px;flex-basis:38px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}