/* ============================================================
   PDF COMPRESSOR - styles
   No inline styles anywhere: the gateway serves this app a
   hardened CSP with style-src 'self' only (see the SITE entry in
   gateway/constants.js). Every rule lives here.
   Tokens are this app's OWN copy of the cosmic-dark palette in
   gateway/constants.js THEME - per-app token sets are the house
   convention; there is no shared stylesheet. Only system fonts
   are used, so the page makes no external request at all.
   ============================================================ */

/* ---------- Design tokens (THEME, gateway/constants.js) ---------- */
:root{
  --bg-deep:#05060d;                    /* page background, deepest */
  --bg-near:#0b0e1c;                    /* radial-gradient inner glow */
  --star:#ffffff;
  --star-faint:rgba(255,255,255,0.55);
  --accent:#c8922a;                     /* glowing gold */
  --accent-soft:#e3b65a;                /* lighter gold for hovers */
  --text:#e8e6df;                       /* primary text */
  --text-muted:#9aa0b4;                 /* secondary text */
  --card-bg:rgba(18,22,40,0.72);
  --card-border:rgba(200,146,42,0.28);
  --card-border-hover:rgba(227,182,90,0.65);
  --bad:#e0685f;                        /* error text */
  --good:#7fc8a0;                        /* success accent */
  --r:16px;                             /* card radius */
  --measure:640px;                      /* content width */
  --font-body:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}

*{box-sizing:border-box;}
html,body{margin:0;}
body{
  font-family:var(--font-body);
  color:var(--text);
  background:radial-gradient(120% 90% at 50% -10%, var(--bg-near) 0%, var(--bg-deep) 60%) fixed;
  background-color:var(--bg-deep);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  padding:max(16px, env(safe-area-inset-top)) 16px max(28px, env(safe-area-inset-bottom));
  min-height:100vh;
}
.wrap{max-width:var(--measure);margin:0 auto;position:relative;}

/* ---------- Masthead ---------- */
.masthead{padding:14px 2px 22px;position:relative;}
.top-nav{
  position:absolute;top:14px;right:2px;
  display:flex;align-items:center;gap:10px;
  z-index:50;
}
.back-portal-link{
  display:flex;align-items:center;justify-content:center;
  width:34px;height:34px;background:#0c0b09;
  border:1px solid #252220;border-radius:6px;
  color:var(--accent);text-decoration:none;
  font-family:Georgia,serif;font-size:20px;font-weight:600;line-height:1;
  transition:all .2s;cursor:pointer;
}
.back-portal-link:hover{
  border-color:var(--accent);
  background:#131110;
  box-shadow:0 0 10px rgba(200,146,42,.25);
}
.eyebrow{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--accent);margin:0;
}
h1{
  font-weight:600;font-size:clamp(28px,7vw,40px);line-height:1.06;
  letter-spacing:-.015em;margin:.28em 0 .2em;
}
.lede{color:var(--text-muted);font-size:15px;max-width:48ch;margin:0;}

/* ---------- Cards ---------- */
.card{
  background:var(--card-bg);border:1px solid var(--card-border);
  border-radius:var(--r);padding:20px;margin-bottom:16px;
  box-shadow:0 18px 40px -28px rgba(0,0,0,.9);
}
.section-label{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--text-muted);margin:0 0 14px;
}

/* ---------- Drop zone ---------- */
.drop{
  border:1.5px dashed var(--card-border);border-radius:13px;
  padding:34px 18px;text-align:center;cursor:pointer;
  background:rgba(5,6,13,.35);
  transition:border-color .15s, background .15s, transform .05s;
}
.drop:hover,.drop:focus-visible{border-color:var(--card-border-hover);background:rgba(11,14,28,.6);}
.drop.dragging{border-color:var(--accent-soft);background:rgba(200,146,42,.08);}
.drop:active{transform:translateY(1px);}
.drop-title{margin:0;font-size:17px;font-weight:600;}
.drop-sub{margin:6px 0 0;font-size:14px;color:var(--text-muted);}
.drop-browse{color:var(--accent-soft);text-decoration:underline;}
.drop-limit{
  margin:12px 0 0;font-family:var(--font-mono);font-size:11px;
  letter-spacing:.08em;color:var(--text-muted);
}

.file-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;
  margin-top:14px;padding:10px 12px;border-radius:10px;
  border:1px solid var(--card-border);background:rgba(5,6,13,.45);
}
.file-name{font-size:14px;overflow-wrap:anywhere;}
.file-size{font-family:var(--font-mono);font-size:12px;color:var(--text-muted);white-space:nowrap;}

/* ---------- Target size field ---------- */
.field{margin-top:20px;}
.lab{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--text-muted);display:block;margin-bottom:8px;
}
.target-row{display:flex;align-items:center;gap:10px;}
.num{
  font-family:var(--font-mono);font-size:16px;color:var(--text);
  background:rgba(5,6,13,.6);border:1px solid var(--card-border);
  border-radius:10px;padding:11px 12px;width:120px;
}
.num:focus{outline:none;border-color:var(--card-border-hover);}
.unit{font-family:var(--font-mono);font-size:13px;color:var(--text-muted);}
.hint{display:block;margin-top:8px;font-size:12.5px;color:var(--text-muted);}

/* ---------- Buttons ---------- */
.primary-btn{
  appearance:none;cursor:pointer;width:100%;margin-top:22px;
  font-family:var(--font-body);font-size:16px;font-weight:700;
  color:#12100a;background:var(--accent);border:0;border-radius:13px;padding:15px;
  display:flex;align-items:center;justify-content:center;gap:10px;
  text-decoration:none;
  transition:background .15s, transform .06s, opacity .15s;
}
.primary-btn:hover{background:var(--accent-soft);}
.primary-btn:active{transform:translateY(1px);}
.primary-btn[disabled]{opacity:.45;cursor:not-allowed;}
.primary-btn[disabled]:hover{background:var(--accent);}
.download-btn{margin-top:18px;}

/* ---------- Progress / messages ---------- */
.progress{margin-top:18px;}
.progress-label{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--text-muted);margin:0 0 8px;
}
.bar{
  height:5px;border-radius:999px;background:rgba(5,6,13,.7);
  border:1px solid var(--card-border);overflow:hidden;
}
.bar > i{
  display:block;height:100%;width:0;border-radius:999px;
  background:linear-gradient(90deg,var(--accent),var(--accent-soft));
  transition:width .25s ease;
}
.bar.indeterminate > i{width:40%;animation:slide 1.15s ease-in-out infinite;}
@keyframes slide{
  0%{transform:translateX(-110%);}
  100%{transform:translateX(260%);}
}

.notice,.error{
  margin:16px 0 0;font-size:14px;padding:11px 13px;border-radius:10px;
  border:1px solid var(--card-border);background:rgba(5,6,13,.5);
}
.notice{color:var(--text);border-left:3px solid var(--good);}
.error{color:var(--text);border-left:3px solid var(--bad);}

/* ---------- Result ---------- */
.stats{display:flex;flex-wrap:wrap;gap:18px;}
.stat{display:flex;flex-direction:column;gap:3px;min-width:96px;}
.stat-label{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--text-muted);
}
.stat-value{font-size:20px;font-weight:600;}
.stat-value.accent{color:var(--accent-soft);}
.settings{
  margin:16px 0 0;font-family:var(--font-mono);font-size:12px;
  color:var(--text-muted);letter-spacing:.04em;
}

/* ---------- Footer ---------- */
footer{margin:20px 2px 4px;}
.gh-link{
  display:inline-block;font-size:13.5px;color:var(--accent);
  text-decoration:none;border-bottom:1px solid rgba(200,146,42,.35);
}
.gh-link:hover{color:var(--accent-soft);border-bottom-color:var(--accent-soft);}
.note{margin:12px 0 0;font-size:12px;color:var(--text-muted);line-height:1.55;}

/* ---------- Utility ---------- */
.hidden{display:none !important;}
.visually-hidden{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}
:focus-visible{outline:2px solid var(--accent-soft);outline-offset:2px;border-radius:8px;}

@media (max-width:600px){
  .card{padding:16px;}
  .drop{padding:26px 14px;}
  .stats{gap:14px;}
  .stat{min-width:84px;}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;}
}