/* ============================================================
   Lector QR Verifactu — styles.css
   ============================================================ */

/* ---------- 1. Custom properties ---------- */
:root {
  --bg: #f6f7f5;
  --surface: #ffffff;
  --ink: #14181b;
  --ink-soft: #4b5560;
  --border: #dfe3e0;
  --accent: #0f6b4c;
  --accent-ink: #ffffff;
  --accent-soft: #e3f2ea;
  --danger: #b3261e;
  --danger-soft: #fbeaea;
  --warn: #92600a;
  --warn-soft: #fdf3df;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 1px 2px rgba(20, 24, 27, 0.04), 0 8px 24px -12px rgba(20, 24, 27, 0.12);
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151a;
    --surface: #191d23;
    --ink: #eef1f3;
    --ink-soft: #a9b2ba;
    --border: #2a3038;
    --accent: #34c98d;
    --accent-ink: #0b1310;
    --accent-soft: #16302677;
    --danger: #ff7a70;
    --danger-soft: #3a1e1c;
    --warn: #ffca6a;
    --warn-soft: #3a2f13;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px -12px rgba(0, 0, 0, 0.6);
  }
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; tab-size: 2; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.15; letter-spacing: -0.01em; }
::selection { background: var(--accent); color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem; background: var(--ink); color: var(--bg);
  z-index: 9999; border-radius: 8px; font-weight: 600;
}
.skip-link:focus { top: 1rem; }

/* ---------- 3. Layout shell ---------- */
.wrap { max-width: 760px; margin: 0 auto; padding: 0 1.25rem; }
.wrap-wide { max-width: 920px; margin: 0 auto; padding: 0 1.25rem; }

header.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.site-header .bar {
  max-width: 920px; margin: 0 auto; padding: 0.9rem 1.25rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.brand { display: flex; align-items: center; gap: .55rem; font-weight: 800; font-size: 1.05rem; }
.brand svg { flex: none; }
.header-links { display: flex; gap: 1.25rem; font-size: .92rem; color: var(--ink-soft); }
.header-links a:hover { color: var(--ink); }

main { display: block; }

.hero { padding: 2.6rem 0 1.4rem; text-align: center; }
.hero h1 { font-size: clamp(1.6rem, 4.4vw, 2.35rem); margin-bottom: .6rem; }
.hero p.sub { color: var(--ink-soft); font-size: 1.05rem; max-width: 46ch; margin: 0 auto; }

/* ---------- 4. Tool card ---------- */
.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin: 1.6rem 0 1rem;
}
.dropzone {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: .7rem; text-align: center;
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 2.4rem 1.25rem;
  cursor: pointer;
  transition: border-color .2s var(--ease-out), background-color .2s var(--ease-out);
}
.dropzone:hover, .dropzone.is-dragover { border-color: var(--accent); background: var(--accent-soft); }
.dropzone svg { color: var(--accent); }
.dropzone strong { font-size: 1.05rem; }
.dropzone span.hint { color: var(--ink-soft); font-size: .9rem; }
.dropzone input[type="file"] { position: absolute; width: 1px; height: 1px; opacity: 0; overflow: hidden; }
.dz-actions { display: flex; gap: .6rem; flex-wrap: wrap; justify-content: center; margin-top: .3rem; }
.btn {
  display: inline-flex; align-items: center; gap: .45rem;
  padding: .6rem 1.05rem; border-radius: 999px; font-weight: 600; font-size: .92rem;
  border: 1px solid var(--border); background: var(--surface); color: var(--ink);
  transition: transform .15s var(--ease-out), border-color .15s var(--ease-out), background-color .15s var(--ease-out);
}
.btn:hover { border-color: var(--accent); transform: translateY(-1px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost { border-color: transparent; color: var(--ink-soft); }
.btn-ghost:hover { color: var(--ink); border-color: var(--border); }
.btn[disabled] { opacity: .55; pointer-events: none; }

/* progress */
.progress-row { display: flex; align-items: center; gap: .8rem; padding: .6rem 0; color: var(--ink-soft); font-size: .92rem; }
.spinner {
  width: 18px; height: 18px; border-radius: 50%;
  border: 2.5px solid var(--border); border-top-color: var(--accent);
  animation: spin .8s linear infinite; flex: none;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* result */
.result { margin-top: 1.1rem; }
.result-badge {
  display: inline-flex; align-items: center; gap: .45rem;
  padding: .4rem .85rem; border-radius: 999px; font-weight: 700; font-size: .88rem;
  margin-bottom: .9rem;
}
.result-badge.ok { background: var(--accent-soft); color: var(--accent); }
.result-badge.warn { background: var(--warn-soft); color: var(--warn); }
.result-badge.bad { background: var(--danger-soft); color: var(--danger); }

.result-url {
  font-family: var(--mono); font-size: .82rem; word-break: break-all;
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: .8rem .9rem; margin-bottom: 1rem; position: relative;
}
.copy-btn {
  position: absolute; top: .5rem; right: .5rem;
  font-size: .78rem; padding: .3rem .6rem; border-radius: 6px;
  background: var(--surface); border: 1px solid var(--border);
}

.field-table { width: 100%; border-collapse: collapse; margin-bottom: 1rem; font-size: .92rem; }
.field-table th { text-align: left; color: var(--ink-soft); font-weight: 600; width: 38%; padding: .45rem 0; vertical-align: top; }
.field-table td { padding: .45rem 0; font-family: var(--mono); font-size: .88rem; }
.field-table tr + tr { border-top: 1px solid var(--border); }

.check-list { list-style: none; display: flex; flex-direction: column; gap: .5rem; margin-bottom: 1rem; }
.check-list li { display: flex; align-items: flex-start; gap: .55rem; font-size: .92rem; }
.check-list .ic { flex: none; margin-top: .15rem; }
.check-list .ic.ok { color: var(--accent); }
.check-list .ic.bad { color: var(--danger); }
.check-list .ic.warn { color: var(--warn); }

.result-actions { display: flex; gap: .6rem; flex-wrap: wrap; }

.error-box {
  background: var(--danger-soft); color: var(--danger); border-radius: var(--radius-sm);
  padding: 1rem; font-size: .92rem; display: flex; gap: .6rem; align-items: flex-start;
}

.privacy-badge {
  display: flex; align-items: center; gap: .5rem; justify-content: center;
  color: var(--ink-soft); font-size: .85rem; margin: .3rem 0 .2rem; text-align: center;
}
.limits-note { text-align: center; color: var(--ink-soft); font-size: .8rem; margin-bottom: 1.6rem; }

/* ---------- 5. Ad slots ---------- */
.ad-slot {
  display: flex; align-items: center; justify-content: center;
  min-height: 90px; border: 1px dashed var(--border); border-radius: var(--radius-sm);
  color: var(--ink-soft); font-size: .78rem; letter-spacing: .06em; text-transform: uppercase;
  background: repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(120,120,120,.045) 10px, rgba(120,120,120,.045) 20px);
  margin: 1.8rem auto;
}
.ad-slot.leaderboard { max-width: 728px; }
.ad-slot.in-content { max-width: 100%; }

/* corner toast */
.corner-toast {
  position: fixed; right: 1rem; bottom: 1rem; z-index: 60;
  width: 240px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); box-shadow: var(--shadow); padding: .8rem;
  display: flex; flex-direction: column; gap: .4rem;
  transform: translateY(12px); opacity: 0; pointer-events: none;
  transition: transform .35s var(--ease-out), opacity .35s var(--ease-out);
}
.corner-toast.is-visible { transform: translateY(0); opacity: 1; pointer-events: auto; }
.corner-toast .toast-close {
  position: absolute; top: .35rem; right: .45rem; font-size: 1rem; color: var(--ink-soft);
  width: 22px; height: 22px; display: flex; align-items: center; justify-content: center; border-radius: 50%;
}
.corner-toast .toast-close:hover { background: var(--bg); }
.corner-toast .toast-label {
  font-size: .68rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-soft);
}
.corner-toast .toast-ad {
  min-height: 60px; border: 1px dashed var(--border); border-radius: 8px;
  display: flex; align-items: center; justify-content: center; font-size: .72rem; color: var(--ink-soft);
}

/* download interstitial dialog */
dialog.dl-modal {
  border: none; border-radius: var(--radius); padding: 0; width: min(92vw, 380px);
  box-shadow: var(--shadow);
}
dialog.dl-modal::backdrop { background: rgba(10, 12, 14, .5); }
.dl-modal-inner { padding: 1.25rem; }
.dl-modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: .8rem; }
.dl-modal-head h3 { font-size: 1rem; }
.dl-close { width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.dl-close:hover { background: var(--bg); }
.dl-modal .ad-slot { min-height: 200px; margin: 0 0 1rem; }
.dl-modal-foot { text-align: center; }

/* ---------- 6. Content sections ---------- */
section.content { padding: 1.6rem 0; }
section.content h2 { font-size: 1.35rem; margin-bottom: 1rem; }
section.content h3 { font-size: 1.05rem; margin: 1.1rem 0 .4rem; }
section.content p { color: var(--ink-soft); margin-bottom: .85rem; }
section.content ul, section.content ol { color: var(--ink-soft); margin: 0 0 .85rem 1.25rem; }
section.content li { margin-bottom: .35rem; }

.steps { display: grid; grid-template-columns: 1fr; gap: 1rem; margin: 1.2rem 0; }
.step {
  display: flex; gap: .9rem; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 1rem 1.1rem;
}
.step .num {
  flex: none; width: 34px; height: 34px; border-radius: 50%; background: var(--accent-soft);
  color: var(--accent); font-weight: 800; display: flex; align-items: center; justify-content: center;
}
.step h3 { margin: 0 0 .25rem; font-size: .98rem; }
.step p { margin: 0; font-size: .9rem; }

.usage-grid { display: grid; grid-template-columns: 1fr; gap: .9rem; margin: 1.2rem 0; }
.usage-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 1rem 1.1rem;
}
.usage-card h3 { margin: 0 0 .3rem; font-size: .98rem; display: flex; align-items: center; gap: .5rem; }
.usage-card p { margin: 0; font-size: .9rem; }

details.faq-item {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: .2rem 0; margin-bottom: .6rem;
}
details.faq-item summary {
  cursor: pointer; list-style: none; padding: .85rem 1.1rem; font-weight: 600; font-size: .96rem;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item summary::after { content: "+"; color: var(--accent); font-size: 1.3rem; flex: none; }
details.faq-item[open] summary::after { content: "\2212"; }
details.faq-item .faq-body { padding: 0 1.1rem 1rem; color: var(--ink-soft); font-size: .92rem; }

.more-tools { display: grid; grid-template-columns: 1fr; gap: .8rem; margin: 1.2rem 0; }
.more-tools a {
  display: block; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: .9rem 1rem; font-weight: 600; font-size: .92rem;
}
.more-tools a:hover { border-color: var(--accent); }
.more-tools a span { display: block; font-weight: 400; color: var(--ink-soft); font-size: .84rem; margin-top: .15rem; }

/* ---------- 7. Footer ---------- */
footer.site-footer {
  border-top: 1px solid var(--border); margin-top: 2rem; padding: 1.6rem 0 2.4rem;
  color: var(--ink-soft); font-size: .84rem;
}
.footer-links { display: flex; gap: 1.1rem; flex-wrap: wrap; margin-bottom: .7rem; }
.footer-links a:hover { color: var(--ink); }

/* ---------- 8. Breakpoints ---------- */
@media (min-width: 540px) {
  .usage-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 720px) {
  .steps { grid-template-columns: repeat(3, 1fr); }
  .more-tools { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 960px) {
  .usage-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- 9. Reduced motion (solo lo intrusivo) ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* ---------- 10. State machine on tool card ---------- */
.tool-card[data-state="idle"] .progress-row,
.tool-card[data-state="idle"] .result,
.tool-card[data-state="idle"] .error-box { display: none; }

.tool-card[data-state="loading-engine"] .dropzone,
.tool-card[data-state="working"] .dropzone { opacity: .5; pointer-events: none; }
.tool-card:not([data-state="loading-engine"]):not([data-state="working"]) .progress-row { display: none; }

.tool-card[data-state="done"] .dropzone { display: none; }
.tool-card:not([data-state="done"]) .result { display: none; }

.tool-card[data-state="error"] .dropzone { display: none; }
.tool-card:not([data-state="error"]) .error-box { display: none; }