/* ============================================================
   Free Utility Lab — brand system "Modernist / Ascua"
   Tokens: Papel #f3f2f2 · Tinta #201e1d · Ascua #ec3013
   Rescoldo #ff9783 · Grafito #2d2b2b · Bruma #d7d3d3
   Flat, architectural: zero radius, strong 2px dividers,
   flush-left type, accent used sparingly.

   Theme resolution order (light is the default):
   1. bare :root                          -> light tokens
   2. prefers-color-scheme: dark          -> dark tokens, unless data-theme="light" is forced
   3. html[data-theme="dark"|"light"]     -> explicit user choice via the toggle, wins either way
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@400;600;800&display=swap');

:root {
  --color-bg:        #f3f2f2; /* Papel */
  --color-surface:   #eae9e9;
  --color-text:      #201e1d; /* Tinta */
  --color-text-soft: color-mix(in srgb, #201e1d 62%, transparent);
  --color-accent:    #ec3013; /* Ascua */
  --color-accent-ink:#f8f4f4;
  --color-accent-strong: #ae1800;
  --color-border:    color-mix(in srgb, #201e1d 18%, transparent);
  --color-border-strong: color-mix(in srgb, #201e1d 55%, transparent);

  --font-heading: "Archivo", system-ui, sans-serif;
  --font-body: "Archivo", system-ui, sans-serif;

  --container: 1080px;
  --gap: 28px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg:        #2d2b2b; /* Grafito */
    --color-surface:   #383534;
    --color-text:      #f8f4f4;
    --color-text-soft: color-mix(in srgb, #f8f4f4 62%, transparent);
    --color-accent:    #ff9783; /* Rescoldo */
    --color-accent-ink:#2d2b2b;
    --color-accent-strong: #ffb5a6;
    --color-border:    color-mix(in srgb, #f8f4f4 18%, transparent);
    --color-border-strong: color-mix(in srgb, #f8f4f4 45%, transparent);
  }
}

:root[data-theme="dark"] {
  --color-bg:        #2d2b2b; /* Grafito */
  --color-surface:   #383534;
  --color-text:      #f8f4f4;
  --color-text-soft: color-mix(in srgb, #f8f4f4 62%, transparent);
  --color-accent:    #ff9783; /* Rescoldo */
  --color-accent-ink:#2d2b2b;
  --color-accent-strong: #ffb5a6;
  --color-border:    color-mix(in srgb, #f8f4f4 18%, transparent);
  --color-border-strong: color-mix(in srgb, #f8f4f4 45%, transparent);
}

* , *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.1;
  margin: 0;
  text-wrap: balance;
}
p { margin: 0; color: var(--color-text-soft); }
a { color: var(--color-accent); text-decoration: none; text-underline-offset: 3px; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--color-accent); color: var(--color-accent-ink);
  padding: 12px 18px; font-weight: 800; z-index: 999;
}
.skip-link:focus { left: 16px; top: 16px; }

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

/* — nav — */
.site-nav {
  border-bottom: 2px solid var(--color-border-strong);
  padding: 22px 0;
}
.site-nav .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
}
.brand {
  font-family: var(--font-heading); font-weight: 800; font-size: 1.05rem;
  letter-spacing: -0.01em; color: var(--color-text);
}
.brand:hover { text-decoration: none; color: var(--color-accent); }
.nav-links { display: flex; gap: 28px; align-items: center; flex-wrap: wrap; }
.nav-links a { color: var(--color-text); font-weight: 600; font-size: 0.95rem; }
.nav-links a:hover { color: var(--color-accent); }
.nav-right { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.nav-lang { display: flex; gap: 10px; font-size: 0.85rem; font-weight: 600; color: var(--color-text-soft); }
.nav-lang a { color: var(--color-text-soft); }
.nav-lang a:hover { color: var(--color-accent); }
.nav-lang a[aria-current="page"] { color: var(--color-accent); }

/* — theme toggle — */
.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; padding: 0;
  border: 2px solid var(--color-border-strong); background: transparent;
  color: var(--color-text); cursor: pointer; font-size: 1rem; line-height: 1;
}
.theme-toggle:hover { border-color: var(--color-accent); color: var(--color-accent); }
.theme-toggle::before { content: "\1F319"; }
:root[data-theme="dark"] .theme-toggle::before { content: "\2600\FE0F"; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle::before { content: "\2600\FE0F"; }
}

/* — section rhythm — */
.section { padding: 72px 0; border-bottom: 2px solid var(--color-border); }
.section:last-of-type { border-bottom: none; }
.section-label {
  display: block; font-size: 0.8rem; font-weight: 800; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--color-accent); margin-bottom: 16px;
}

/* — hero — */
.hero { padding-top: 88px; padding-bottom: 88px; }
.hero h1 { font-size: clamp(2.3rem, 4.4vw, 3.6rem); max-width: 16ch; }
.hero-sub { max-width: 56ch; font-size: 1.15rem; margin-top: 22px; }
.hero-cta { display: flex; gap: 20px; align-items: center; margin-top: 34px; flex-wrap: wrap; }
.hero-trust {
  margin-top: 38px; display: flex; gap: 10px; flex-wrap: wrap;
  font-size: 0.82rem; font-weight: 700; letter-spacing: 0.03em; text-transform: uppercase;
  color: var(--color-text-soft);
}
.hero-trust span:not(:last-child)::after { content: "·"; margin-left: 10px; color: var(--color-border-strong); }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-heading); font-weight: 800; font-size: 0.95rem;
  padding: 14px 26px; border: 2px solid var(--color-text);
  color: var(--color-text); background: transparent;
}
.btn-primary { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-accent-ink); }
.btn-primary:hover { background: var(--color-accent-strong); border-color: var(--color-accent-strong); text-decoration: none; color: var(--color-accent-ink); }
.btn-ghost:hover { background: var(--color-text); color: var(--color-bg); text-decoration: none; }

/* — how it works — */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); margin-top: 40px; }
.step { border-top: 2px solid var(--color-border-strong); padding-top: 20px; }
.step h3 { font-size: 1.15rem; margin-bottom: 10px; }
.step p { font-size: 0.96rem; }

/* — tool grid — */
.tool-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); margin-top: 40px; }
.tool-card {
  display: flex; flex-direction: column; gap: 14px;
  padding: 26px; background: var(--color-surface); border: 2px solid var(--color-border);
}
.tool-card h3 { font-size: 1.2rem; }
.tool-card p { flex: 1; font-size: 0.95rem; }
.tool-card .btn { align-self: flex-start; padding: 10px 20px; font-size: 0.85rem; }

.guides { margin-top: 44px; padding-top: 28px; border-top: 2px solid var(--color-border); }
.guides-label { font-size: 0.8rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-soft); margin-bottom: 16px; display: block; }
.guides-list { display: flex; flex-wrap: wrap; gap: 12px; }
.guides-list a {
  display: inline-block; padding: 9px 16px; border: 2px solid var(--color-border-strong);
  color: var(--color-text); font-weight: 600; font-size: 0.88rem;
}
.guides-list a:hover { border-color: var(--color-accent); color: var(--color-accent); text-decoration: none; }

/* — reserved ad slot — */
.ad-slot {
  border: 2px dashed var(--color-border-strong);
  padding: 34px 24px; text-align: center;
}
.ad-slot p { font-size: 0.82rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--color-text-soft); }

/* — international — */
.intl-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--gap); margin-top: 32px; }
.intl-card {
  padding: 26px; border: 2px solid var(--color-border);
  background: var(--color-surface);
}
.intl-card h3 { font-size: 1.3rem; margin-bottom: 10px; }
.intl-card:hover { border-color: var(--color-accent); }
.intl-card[lang="he"] { direction: rtl; text-align: right; }

/* — document pages (privacy policy etc.) — */
.doc-page { padding: 72px 0 96px; }
.doc-shell { max-width: 72ch; }
.doc-eyebrow { display: block; font-size: 0.8rem; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-accent); margin-bottom: 16px; }
.doc-title { font-size: clamp(2rem, 4vw, 2.8rem); }
.doc-updated { color: var(--color-text-soft); font-size: 0.9rem; margin-top: 12px; }
.doc-shell h2 { font-size: 1.35rem; margin-top: 44px; margin-bottom: 12px; padding-top: 24px; border-top: 2px solid var(--color-border); }
.doc-shell h2:first-of-type { border-top: none; padding-top: 0; }
.doc-shell p { margin-top: 4px; font-size: 1rem; }
.doc-shell .btn { margin-top: 40px; }

/* — footer — */
.site-footer { padding: 48px 0; border-top: 2px solid var(--color-border-strong); }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-brand { font-family: var(--font-heading); font-weight: 800; font-size: 1.05rem; color: var(--color-text); }
.footer-links { display: flex; gap: 20px; font-size: 0.9rem; font-weight: 600; }
.footer-links a { color: var(--color-text); }
.footer-copy { font-size: 0.82rem; color: var(--color-text-soft); max-width: 60ch; margin-top: 10px; }

@media (max-width: 860px) {
  .steps, .tool-grid, .intl-grid { grid-template-columns: 1fr; }
  .site-footer .wrap { flex-direction: column; }
}