/* ============================================================
   Frontek Tools — hub di micro-tool client-side, zero deps
   Palette brand frontek + tema chiaro/scuro (allineato a start)
   ============================================================ */

:root{
  --teal:#2A9D8F; --coral:#E76F51; --dark:#264653; --gold:#E9C46A;
  --green:#8AB17D; --danger:#c0432c;

  --bg:#f4f2ea; --bg2:#ece8dc; --card:#ffffff; --line:#e4e0d4;
  --ink:#21333b; --muted:#5a6b73; --faint:#8a979c;
  --shadow:0 1px 2px rgba(38,70,83,.06), 0 6px 20px rgba(38,70,83,.06);
  --accent:var(--teal);
  --code:#0e1a1f; --code-ink:#d6efe9;
}

@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0f1a1f; --bg2:#132229; --card:#17272e; --line:#24373f;
    --ink:#e8efee; --muted:#9db0b6; --faint:#6f8189;
    --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 26px rgba(0,0,0,.32);
    --code:#0a1418; --code-ink:#cfe9e3;
  }
}
:root[data-theme="dark"]{
  --bg:#0f1a1f; --bg2:#132229; --card:#17272e; --line:#24373f;
  --ink:#e8efee; --muted:#9db0b6; --faint:#6f8189;
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 26px rgba(0,0,0,.32);
  --code:#0a1418; --code-ink:#cfe9e3;
}

*{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; }
body{
  margin:0; min-height:100vh;
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(42,157,143,.10), transparent 60%),
    radial-gradient(1000px 500px at 100% 0%, rgba(231,111,81,.08), transparent 55%),
    var(--bg);
  display:flex; flex-direction:column;
}
a{ color:var(--accent); text-decoration:none; }
a:hover{ text-decoration:underline; }
h1,h2,h3{ line-height:1.2; }

.skip{ position:absolute; left:-9999px; top:0; background:var(--card); color:var(--ink);
  padding:8px 14px; border-radius:8px; z-index:100; }
.skip:focus{ left:12px; top:12px; }

/* ---- TOP BAR ---- */
.top{ display:flex; align-items:center; gap:12px; padding:14px clamp(14px,4vw,34px); }
.brand{ font-size:1.02rem; letter-spacing:.16em; font-weight:800; text-transform:uppercase; color:var(--ink); }
.brand:hover{ text-decoration:none; }
.brand span{ color:var(--coral); }
.top__spacer{ flex:1 1 auto; }
.iconbtn{ border:1px solid var(--line); background:var(--card); color:var(--ink);
  width:40px; height:40px; border-radius:11px; font-size:1.15rem; cursor:pointer;
  display:inline-flex; align-items:center; justify-content:center;
  transition:transform .12s ease, border-color .12s ease; }
.iconbtn:hover{ transform:translateY(-1px); border-color:var(--accent); }

/* ---- LAYOUT ---- */
.wrap{ flex:1 1 auto; width:100%; max-width:960px; margin:0 auto;
  padding:clamp(8px,2.4vw,22px) clamp(14px,4vw,34px) 26px; }

/* ---- HUB ---- */
.hub__intro{ text-align:center; margin:clamp(10px,3vh,34px) 0 clamp(18px,3vh,30px); }
.hub__title{ margin:0 0 8px; font-size:clamp(1.5rem,4.5vw,2.2rem); letter-spacing:-.01em; }
.hub__sub{ margin:0 0 18px; color:var(--muted); font-size:1.02rem; }
.hub__search{ max-width:460px; margin:0 auto; }
.hub__search input{ width:100%; border:1px solid var(--line); background:var(--card); color:var(--ink);
  border-radius:14px; padding:13px 16px; font-size:1rem; outline:none; box-shadow:var(--shadow); }
.hub__search input:focus{ border-color:var(--accent); }
.hub__empty{ text-align:center; color:var(--muted); margin-top:30px; }

.tools{ display:grid; gap:14px; grid-template-columns:repeat(auto-fill,minmax(230px,1fr)); }
.tcard{ display:grid; grid-template-columns:auto 1fr; grid-template-rows:auto auto;
  gap:2px 14px; align-items:center; padding:16px;
  background:var(--card); border:1px solid var(--line); border-radius:16px;
  box-shadow:var(--shadow); color:var(--ink);
  transition:transform .12s ease, border-color .12s ease; }
.tcard:hover{ transform:translateY(-2px); border-color:var(--accent); text-decoration:none; }
.tcard__ic{ grid-row:1 / span 2; width:46px; height:46px; border-radius:12px;
  display:flex; align-items:center; justify-content:center; font-weight:800; font-size:.95rem;
  color:#fff; background:linear-gradient(135deg,var(--teal),var(--dark)); letter-spacing:.02em; }
.tcard__name{ font-weight:700; }
.tcard__desc{ color:var(--muted); font-size:.86rem; }
.tcard[hidden]{ display:none; }

/* ---- PANEL (singolo strumento) ---- */
.panel{ background:var(--card); border:1px solid var(--line); border-radius:18px;
  box-shadow:var(--shadow); padding:clamp(16px,3vw,26px); margin-top:8px; }
.panel__back{ display:inline-flex; align-items:center; gap:6px; color:var(--muted);
  font-size:.9rem; margin-bottom:14px; }
.panel__back:hover{ color:var(--accent); }
.panel__head{ margin:0 0 4px; font-size:1.5rem; }
.panel__lead{ margin:0 0 18px; color:var(--muted); }

/* controlli comuni degli strumenti */
.row{ display:flex; flex-wrap:wrap; gap:10px; align-items:center; margin:0 0 12px; }
.lbl{ font-size:.82rem; font-weight:600; color:var(--muted); display:block; margin:0 0 6px; }
.ta{ width:100%; min-height:150px; resize:vertical; font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.92rem; line-height:1.5; border:1px solid var(--line); border-radius:12px;
  background:var(--bg2); color:var(--ink); padding:12px 14px; outline:none; }
.ta:focus{ border-color:var(--accent); }
.inp{ border:1px solid var(--line); border-radius:10px; background:var(--bg2); color:var(--ink);
  padding:11px 13px; font-size:.95rem; outline:none; min-width:0; }
.inp:focus{ border-color:var(--accent); }
.sel{ border:1px solid var(--line); border-radius:10px; background:var(--card); color:var(--ink);
  padding:10px 12px; font-size:.9rem; cursor:pointer; outline:none; }
.btn{ border:0; background:var(--accent); color:#fff; padding:11px 16px; border-radius:10px;
  font-size:.92rem; font-weight:600; cursor:pointer; transition:filter .12s ease; }
.btn:hover{ filter:brightness(1.06); }
.btn--light{ background:var(--bg2); color:var(--ink); border:1px solid var(--line); }
.btn--ghost{ background:transparent; color:var(--accent); border:1px solid var(--line); }
.check{ display:inline-flex; align-items:center; gap:7px; font-size:.9rem; color:var(--muted); cursor:pointer; }

.out{ margin-top:14px; }
.out__box{ font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace; font-size:.9rem;
  line-height:1.55; white-space:pre-wrap; word-break:break-word;
  background:var(--code); color:var(--code-ink); border-radius:12px; padding:14px 16px;
  max-height:340px; overflow:auto; }
.status{ font-size:.86rem; margin:10px 0 0; min-height:1.1em; }
.status--ok{ color:var(--green); }
.status--err{ color:var(--danger); }
.copybar{ display:flex; justify-content:space-between; align-items:center; gap:10px; margin-top:12px; }

/* liste (uuid) */
.mono-list{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:8px; }
.mono-list li{ font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace; font-size:.92rem;
  background:var(--bg2); border:1px solid var(--line); border-radius:10px; padding:9px 12px;
  display:flex; justify-content:space-between; gap:10px; align-items:center; }

/* tabellina chiave/valore (epoch, color, text stats) */
.kv{ display:grid; grid-template-columns:auto 1fr; gap:8px 16px; margin-top:12px; }
.kv dt{ color:var(--muted); font-size:.86rem; }
.kv dd{ margin:0; font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace; font-size:.92rem; word-break:break-word; }

.swatch{ width:100%; height:70px; border-radius:12px; border:1px solid var(--line); margin-top:12px; }

.stats{ display:flex; flex-wrap:wrap; gap:10px; margin-top:12px; }
.stat{ background:var(--bg2); border:1px solid var(--line); border-radius:12px; padding:10px 14px; text-align:center; min-width:84px; }
.stat b{ display:block; font-size:1.3rem; }
.stat span{ font-size:.74rem; color:var(--muted); text-transform:uppercase; letter-spacing:.04em; }

/* ---- SPONSOR ---- */
.sponsor{ display:flex; align-items:center; gap:12px; margin:22px auto 0; max-width:640px;
  background:var(--card); border:1px dashed var(--line); border-radius:14px; padding:10px 14px; }
.sponsor__tag{ font-size:.64rem; text-transform:uppercase; letter-spacing:.08em; color:var(--faint);
  border:1px solid var(--line); border-radius:6px; padding:2px 6px; }
.sponsor__body{ flex:1 1 auto; color:var(--ink); }
.sponsor__close{ border:0; background:transparent; color:var(--faint); font-size:1.1rem; cursor:pointer; }

/* ---- FOOTER ---- */
.foot{ text-align:center; color:var(--muted); font-size:.82rem; padding:20px 16px 28px;
  display:flex; flex-wrap:wrap; gap:8px; justify-content:center; align-items:center; }
.foot__dot{ color:var(--faint); }

/* ---- MODALE ---- */
.modal{ position:fixed; inset:0; z-index:60; display:flex; align-items:center; justify-content:center; padding:16px; }
.modal[hidden]{ display:none; }
.modal__backdrop{ position:absolute; inset:0; background:rgba(15,26,31,.55); }
.modal__box{ position:relative; width:100%; max-width:440px; background:var(--card);
  border:1px solid var(--line); border-radius:18px; box-shadow:var(--shadow); overflow:hidden; }
.modal__head{ display:flex; align-items:center; justify-content:space-between;
  padding:16px 18px; border-bottom:1px solid var(--line); }
.modal__head h2{ margin:0; font-size:1.15rem; }
.modal__body{ padding:18px; display:flex; flex-direction:column; gap:16px; }
.field{ display:flex; flex-direction:column; gap:8px; }
.field__label{ font-size:.82rem; font-weight:600; color:var(--muted); }
.field__select{ border:1px solid var(--line); border-radius:10px; background:var(--bg2);
  color:var(--ink); padding:11px 12px; font-size:.95rem; outline:none; }
.field__select:focus{ border-color:var(--accent); }
.field__hint{ font-size:.82rem; color:var(--muted); margin:0; }

/* ---- componenti specifici degli strumenti ---- */
mark{ background:var(--gold); color:#21333b; border-radius:3px; padding:0 2px; }
.rx-slash{ font-family:ui-monospace,Menlo,Consolas,monospace; color:var(--muted); font-size:1.1rem; }
.rxgroup{ margin:10px 0 4px; }
.rxgroup > .lbl{ margin-bottom:5px; }
.rxpal{ display:flex; flex-wrap:wrap; gap:6px; }
.rxbtn{ font-family:ui-monospace,Menlo,Consolas,monospace; font-size:.85rem; border:1px solid var(--line);
  background:var(--bg2); color:var(--ink); border-radius:8px; padding:5px 9px; cursor:pointer;
  transition:border-color .12s ease, background .12s ease; }
.rxbtn:hover{ border-color:var(--accent); background:var(--card); }
.diff-cols{ display:grid; gap:12px; grid-template-columns:1fr 1fr; }
.diff-cols .ta{ min-height:180px; }
.mdprev{ background:var(--card); color:var(--ink); border:1px solid var(--line);
  white-space:normal; min-height:180px; }
.mdprev h1,.mdprev h2,.mdprev h3{ margin:.4em 0 .3em; }
.mdprev p{ margin:.5em 0; }
.mdprev code{ background:var(--bg2); padding:1px 5px; border-radius:5px; font-size:.88em; }
.mdprev pre{ background:var(--code); color:var(--code-ink); padding:10px 12px; border-radius:8px; overflow:auto; }
.mdprev pre code{ background:none; padding:0; color:inherit; }
.mdprev blockquote{ margin:.5em 0; padding:.2em .9em; border-left:3px solid var(--accent); color:var(--muted); }
.mdprev ul,.mdprev ol{ margin:.5em 0; padding-inline-start:1.4em; }
.mdprev hr{ border:0; border-top:1px solid var(--line); margin:1em 0; }
.cpreview{ margin-top:14px; padding:22px 16px; border-radius:12px; border:1px solid var(--line);
  text-align:center; font-size:1.15rem; font-weight:700; }
.chmod-grid{ display:grid; gap:12px; grid-template-columns:repeat(3,1fr); }
.chmod-grp{ background:var(--bg2); border:1px solid var(--line); border-radius:12px; padding:12px; }
.chmod-grp b{ display:block; margin-bottom:8px; }
.chmod-grp .check{ display:flex; margin:4px 0; }
@media (max-width:560px){ .diff-cols, .chmod-grid{ grid-template-columns:1fr; } }

/* ---- RTL ---- */
[dir="rtl"] .tcard{ grid-template-columns:1fr auto; }
[dir="rtl"] .tcard__ic{ grid-column:2; }
[dir="rtl"] .panel__back{ flex-direction:row-reverse; }

@media (max-width:560px){
  .tools{ grid-template-columns:1fr; }
}