/* ===========================================================
   MORF — sistema de diseño
   Identidad: utilidad de precisión. Papel cálido + tinta navy
   + un único acento coral para la acción. Tipografía técnica.
   =========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --paper:      #F6F4EE;
  --surface:    #FFFFFF;
  --ink:        #15192B;
  --ink-soft:   #565E78;
  --ink-faint:  #8A91A8;
  --accent:     #FF5630;
  --accent-press:#E23F1B;
  --accent-tint:#FFEDE7;
  --line:       #E5E1D6;
  --line-strong:#D3CEBF;
  --good:       #138A5B;
  --good-tint:  #E2F4EC;
  --radius:     14px;
  --radius-sm:  9px;
  --shadow:     0 1px 2px rgba(21,25,43,.04), 0 8px 28px rgba(21,25,43,.06);
  --shadow-lift:0 2px 4px rgba(21,25,43,.06), 0 18px 48px rgba(21,25,43,.12);
  --maxw:       1100px;
  --font-disp:  'Space Grotesk', system-ui, sans-serif;
  --font-body:  'IBM Plex Sans', system-ui, sans-serif;
  --font-mono:  'IBM Plex Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }

.brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-disp); font-weight: 700; font-size: 21px; letter-spacing: -.02em; }
.brand .mark {
  width: 30px; height: 30px; border-radius: 8px;
  background: var(--ink); color: var(--paper);
  display: grid; place-items: center;
  font-family: var(--font-mono); font-weight: 500; font-size: 17px;
  position: relative; overflow: hidden;
}
.brand .mark::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 55%, var(--accent) 55%);
}
.brand .mark span { position: relative; z-index: 1; }

.nav { display: flex; align-items: center; gap: 28px; }
.nav a { font-size: 15px; color: var(--ink-soft); font-weight: 500; transition: color .15s; }
.nav a:hover { color: var(--ink); }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 4px 0; transition: .2s; }

.header-right { display: flex; align-items: center; gap: 16px; }
.lang { display: inline-flex; border: 1px solid var(--line-strong); border-radius: 8px; overflow: hidden; flex-shrink: 0; }
.lang button { border: 0; background: var(--surface); cursor: pointer; font-family: var(--font-mono); font-size: 12.5px; padding: 6px 10px; color: var(--ink-faint); font-weight: 500; transition: background .15s, color .15s; }
.lang button.on { background: var(--ink); color: #fff; }
.lang button:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--font-body); font-weight: 600; font-size: 15.5px;
  padding: 12px 22px; border-radius: var(--radius-sm);
  border: 1px solid transparent; cursor: pointer; transition: transform .12s, background .15s, box-shadow .15s;
  text-align: center;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-press); }
.btn-primary:disabled { background: var(--line-strong); color: #fff; cursor: not-allowed; }
.btn-ghost { background: var(--surface); color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-lg { padding: 15px 30px; font-size: 16.5px; }
.btn:focus-visible { outline: 3px solid var(--ink); outline-offset: 2px; }

/* ---------- Hero ---------- */
.hero { padding: 84px 0 56px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 13px; letter-spacing: .02em;
  color: var(--good); background: var(--good-tint);
  padding: 6px 12px; border-radius: 100px; margin-bottom: 26px;
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--good); }
.hero h1 {
  font-family: var(--font-disp); font-weight: 700;
  font-size: clamp(40px, 7vw, 70px); line-height: 1.02; letter-spacing: -.035em;
  margin: 0 0 22px; max-width: 16ch;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .lede { font-size: clamp(17px, 2.4vw, 20px); color: var(--ink-soft); max-width: 52ch; margin: 0 0 34px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* morph ticker (signature) */
.morph {
  margin-top: 50px; display: inline-flex; align-items: center; gap: 16px;
  font-family: var(--font-mono); font-size: 15px; color: var(--ink-soft);
  border: 1px solid var(--line); background: var(--surface);
  padding: 14px 20px; border-radius: 100px; box-shadow: var(--shadow);
}
.morph .chip {
  display: inline-grid; place-items: center; min-width: 58px;
  padding: 5px 0; border-radius: 7px; font-weight: 500; color: var(--ink);
  background: var(--paper); border: 1px solid var(--line);
}
.morph .from { transition: opacity .4s; }
.morph .arrow { color: var(--accent); font-size: 18px; }

/* ---------- Tool grid ---------- */
.section { padding: 30px 0 70px; }
.section-head { margin-bottom: 30px; }
.section-head h2 { font-family: var(--font-disp); font-weight: 600; font-size: clamp(26px, 4vw, 34px); letter-spacing: -.02em; margin: 0 0 8px; }
.section-head p { color: var(--ink-soft); margin: 0; max-width: 56ch; }

.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 18px; }
.tool-card {
  display: flex; flex-direction: column; gap: 14px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px; transition: transform .16s, box-shadow .16s, border-color .16s;
}
.tool-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); border-color: var(--line-strong); }
.tool-card .ico {
  width: 44px; height: 44px; border-radius: 11px; display: grid; place-items: center;
  background: var(--accent-tint); color: var(--accent);
}
.tool-card h3 { font-family: var(--font-disp); font-weight: 600; font-size: 19px; margin: 0; letter-spacing: -.01em; }
.tool-card p { color: var(--ink-soft); font-size: 14.5px; margin: 0; flex: 1; }
.tool-card .go { font-family: var(--font-mono); font-size: 13.5px; color: var(--accent); font-weight: 500; display: inline-flex; align-items: center; gap: 6px; }
.tool-card .badge { font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-faint); }

/* ---------- Trust strip ---------- */
.trust { background: var(--ink); color: var(--paper); padding: 54px 0; }
.trust .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 36px; }
.trust h4 { font-family: var(--font-disp); font-weight: 600; font-size: 18px; margin: 0 0 8px; display: flex; align-items: center; gap: 10px; }
.trust h4 .k { color: var(--accent); }
.trust p { color: #B7BCCB; font-size: 14.5px; margin: 0; }

/* ---------- Tool page ---------- */
.toolpage { padding: 40px 0 70px; }
.crumb { font-family: var(--font-mono); font-size: 13px; color: var(--ink-faint); margin-bottom: 18px; }
.crumb a { color: var(--ink-soft); }
.crumb a:hover { color: var(--accent); }
.toolpage h1 { font-family: var(--font-disp); font-weight: 700; font-size: clamp(30px, 5vw, 44px); letter-spacing: -.03em; margin: 0 0 12px; max-width: 20ch; }
.toolpage .sub { color: var(--ink-soft); font-size: 18px; max-width: 60ch; margin: 0 0 34px; }

.workbench { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.wb-body { padding: 28px; }

/* dropzone */
.dropzone {
  border: 2px dashed var(--line-strong); border-radius: var(--radius);
  background: var(--paper); padding: 46px 24px; text-align: center;
  cursor: pointer; transition: border-color .15s, background .15s; color: var(--ink-soft);
}
.dropzone:hover, .dropzone.drag { border-color: var(--accent); background: var(--accent-tint); }
.dropzone .dz-ico { color: var(--accent); margin-bottom: 12px; }
.dropzone strong { color: var(--ink); font-weight: 600; }
.dropzone .hint { font-size: 13.5px; color: var(--ink-faint); margin-top: 6px; font-family: var(--font-mono); }

/* file list */
.filelist { display: flex; flex-direction: column; gap: 10px; margin-top: 18px; }
.fileitem { display: flex; align-items: center; gap: 14px; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--paper); }
.fileitem .fi-ico { width: 36px; height: 36px; border-radius: 8px; background: var(--surface); border: 1px solid var(--line); display: grid; place-items: center; color: var(--ink-soft); flex-shrink: 0; font-family: var(--font-mono); font-size: 11px; font-weight: 500; }
.fileitem .fi-meta { flex: 1; min-width: 0; }
.fileitem .fi-name { font-weight: 500; font-size: 14.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.fileitem .fi-size { font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-faint); }
.fileitem .fi-size .save { color: var(--good); }
.fileitem .fi-x { background: none; border: 0; cursor: pointer; color: var(--ink-faint); padding: 6px; border-radius: 6px; line-height: 0; }
.fileitem .fi-x:hover { color: var(--accent); background: var(--accent-tint); }
.fileitem .drag-handle { cursor: grab; color: var(--ink-faint); }

/* options */
.options { display: grid; gap: 18px; margin-top: 22px; padding-top: 22px; border-top: 1px solid var(--line); }
.opt-row { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.opt-label { font-family: var(--font-mono); font-size: 13px; color: var(--ink-soft); min-width: 120px; }
.segmented { display: inline-flex; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 3px; gap: 3px; }
.segmented button { border: 0; background: none; cursor: pointer; font-family: var(--font-mono); font-size: 13.5px; padding: 7px 14px; border-radius: 7px; color: var(--ink-soft); font-weight: 500; }
.segmented button.on { background: var(--ink); color: #fff; }
input[type="range"] { accent-color: var(--accent); flex: 1; min-width: 140px; }
.range-val { font-family: var(--font-mono); font-size: 13.5px; color: var(--ink); min-width: 44px; }
input[type="text"], input[type="number"] { font-family: var(--font-mono); font-size: 14px; padding: 9px 12px; border: 1px solid var(--line-strong); border-radius: var(--radius-sm); background: var(--surface); color: var(--ink); }
input:focus-visible, .segmented button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.wb-action { display: flex; align-items: center; gap: 14px; margin-top: 26px; flex-wrap: wrap; }
.wb-note { font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-faint); }

/* result */
.result { margin-top: 18px; padding: 18px; border-radius: var(--radius-sm); background: var(--good-tint); border: 1px solid color-mix(in srgb, var(--good) 25%, transparent); display: none; }
.result.show { display: block; }
.result .r-head { display: flex; align-items: center; gap: 10px; font-weight: 600; color: var(--good); margin-bottom: 4px; }

/* toast */
.toast-wrap { position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%); z-index: 100; display: flex; flex-direction: column; gap: 8px; align-items: center; }
.toast { background: var(--ink); color: #fff; padding: 11px 18px; border-radius: 100px; font-size: 14px; box-shadow: var(--shadow-lift); animation: pop .25s ease; }
.toast.err { background: var(--accent-press); }
@keyframes pop { from { opacity: 0; transform: translateY(8px); } }

/* spinner */
.spin { width: 16px; height: 16px; border: 2px solid rgba(255,255,255,.4); border-top-color: #fff; border-radius: 50%; animation: rot .7s linear infinite; }
@keyframes rot { to { transform: rotate(360deg); } }

/* ---------- SEO content ---------- */
.prose { max-width: 70ch; margin: 60px 0 0; }
.prose h2 { font-family: var(--font-disp); font-weight: 600; font-size: 25px; letter-spacing: -.02em; margin: 40px 0 12px; }
.prose h3 { font-family: var(--font-disp); font-weight: 600; font-size: 18px; margin: 26px 0 6px; }
.prose p, .prose li { color: var(--ink-soft); }
.prose ul { padding-left: 20px; }
.prose li { margin-bottom: 6px; }
.faq-q { font-weight: 600; color: var(--ink); margin-top: 22px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--surface); border-top: 1px solid var(--line); padding: 56px 0 40px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 36px; }
.footer-grid h5 { font-family: var(--font-mono); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-faint); margin: 0 0 16px; }
.footer-grid a { display: block; color: var(--ink-soft); font-size: 14.5px; margin-bottom: 9px; transition: color .15s; }
.footer-grid a:hover { color: var(--accent); }
.footer-about p { color: var(--ink-soft); font-size: 14px; margin: 14px 0 0; max-width: 32ch; }
.footer-base { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--line); font-size: 13px; color: var(--ink-faint); font-family: var(--font-mono); }
.footer-legal a { color: var(--ink-soft); }
.footer-legal a:hover { color: var(--accent); }
.footer-base > a { color: var(--ink-soft); }
.footer-base > a:hover { color: var(--accent); }

/* ad slot (placeholder honesto) */
.ad-slot { max-width: var(--maxw); margin: 30px auto; padding: 0 24px; }
.ad-slot .inner { border: 1px dashed var(--line-strong); border-radius: var(--radius-sm); min-height: 90px; display: grid; place-items: center; color: var(--ink-faint); font-family: var(--font-mono); font-size: 12px; background: var(--surface); }

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  .nav { position: fixed; inset: 68px 0 auto 0; background: var(--paper); border-bottom: 1px solid var(--line); flex-direction: column; align-items: flex-start; gap: 0; padding: 8px 24px 20px; display: none; }
  .nav.open { display: flex; }
  .nav a { padding: 12px 0; width: 100%; border-bottom: 1px solid var(--line); }
  .nav a:last-child { border-bottom: 0; }
  .nav-toggle { display: block; order: 2; }
  .header-right { gap: 10px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-about { grid-column: 1 / -1; }
  .hero { padding: 54px 0 36px; }
  .morph { flex-wrap: wrap; }
  .trust { padding: 40px 0; }
  .trust .grid { gap: 26px; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .container { padding: 0 18px; }
  .ad-slot { padding: 0 18px; }
  .hero { padding: 40px 0 30px; }
  .hero-actions { width: 100%; }
  .hero-actions .btn { flex: 1; }
  .toolpage { padding: 28px 0 50px; }
  .wb-body { padding: 20px 16px; }
  .dropzone { padding: 34px 16px; }
  .opt-row { gap: 10px 12px; }
  .opt-label { min-width: 100%; }
  .segmented { width: 100%; }
  .segmented button { flex: 1; text-align: center; }
  .wb-action { flex-direction: column; align-items: stretch; }
  .wb-action .btn { width: 100%; }
  .wb-note { text-align: center; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .footer-base { flex-direction: column; align-items: flex-start; gap: 8px; }
  .prose { margin-top: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}