/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --navy: #0B1F3A;
  --navy-dark: #071426;
  --white: #FFFFFF;
  --black: #0A0A0A;
  --green: #16A34A;
  --green-dark: #0F7C39;
  --ink: #10182B;
  --muted: #5B6478;
  --border: #E3E7EF;
  --surface: #F6F8FB;
  --surface-2: #EEF1F6;
  --danger: #C0362C;
  --warn-bg: #FFF6E5;
  --warn-text: #8A5A00;
  --ok-bg: #EAF7EF;
  --ok-text: #0F7C39;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 8px 24px rgba(11, 31, 58, 0.08);
  --shadow-lg: 0 20px 48px rgba(11, 31, 58, 0.14);
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --display: "Manrope", var(--sans);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; tab-size: 2; scroll-behavior: smooth; overflow-x: clip; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
  overscroll-behavior-y: none;
}
img, svg, video, canvas { 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 { font-family: var(--display); text-wrap: balance; line-height: 1.15; letter-spacing: -0.01em; color: var(--navy); }
ul, ol { padding-left: 0; list-style: none; }
input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; border-radius: 4px; }

.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem; background: var(--navy); color: var(--white);
  z-index: 9999; border-radius: 8px; font-weight: 600;
  transition: top .2s var(--ease-out);
}
.skip-link:focus { top: 1rem; }

.container { max-width: 1180px; margin-inline: auto; padding-inline: 16px; }

/* =============================================================
   3. Header
   ============================================================= */
.site-header { border-bottom: 1px solid var(--border); position: sticky; top: 0; background: rgba(255,255,255,.92); backdrop-filter: blur(6px); z-index: 40; }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 8px; font-family: var(--display); font-weight: 800; font-size: 1.15rem; color: var(--navy); }
.brand-icon { width: 26px; height: 26px; color: var(--green); }
.site-nav { display: none; gap: 24px; font-weight: 600; font-size: .92rem; }
.site-nav a:hover { color: var(--green-dark); }
@media (min-width: 720px) { .site-nav { display: flex; } }

/* =============================================================
   4. Hero
   ============================================================= */
.hero { padding: 40px 16px 20px; text-align: center; }
.hero h1 { font-size: clamp(1.7rem, 4.4vw, 2.6rem); max-width: 20ch; margin-inline: auto; }
.hero-subtitle { margin-top: 14px; color: var(--muted); font-size: 1.05rem; max-width: 62ch; margin-inline: auto; }

/* =============================================================
   5. Tool card (el corazón de la herramienta)
   ============================================================= */
.tool-section { padding-block: 16px 32px; }
.noscript-warning { background: var(--warn-bg); color: var(--warn-text); border: 1px solid #F0D28A; border-radius: var(--radius-sm); padding: 14px 16px; margin-bottom: 16px; font-size: .92rem; font-weight: 600; }
.tool-card {
  display: grid;
  gap: 28px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 20px;
}
@media (min-width: 960px) {
  .tool-card { grid-template-columns: 1.05fr 1fr; padding: 32px; gap: 40px; }
}

.qr-tabs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.qr-tab {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 12px; border-radius: 999px; border: 1px solid var(--border);
  font-size: .86rem; font-weight: 600; color: var(--muted);
  background: var(--surface); transition: all .18s var(--ease-out);
  white-space: nowrap;
}
.qr-tab .icon { width: 16px; height: 16px; }
.qr-tab:hover { border-color: var(--green); color: var(--navy); }
.qr-tab.is-active { background: var(--navy); border-color: var(--navy); color: var(--white); }

.qr-form { display: grid; gap: 14px; margin-bottom: 6px; }
.field { display: grid; gap: 6px; font-size: .88rem; font-weight: 600; color: var(--navy); }
.field em { color: var(--green-dark); font-style: normal; }
.field input, .field select, .field textarea {
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  padding: 10px 12px; font-size: .95rem; font-weight: 400; color: var(--ink);
  background: var(--white); transition: border-color .15s var(--ease-out);
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--green); }
.field--inline { font-size: .82rem; }

.field-errors { color: var(--danger); font-size: .86rem; display: grid; gap: 4px; margin-bottom: 4px; }
.field-errors li { list-style: disc; margin-left: 18px; }

.customize { border-top: 1px solid var(--border); padding-top: 18px; margin-top: 6px; display: grid; gap: 16px; }
.customize-title { font-size: 1.05rem; }
.customize-row { display: flex; gap: 20px; flex-wrap: wrap; }
.color-field { display: grid; gap: 6px; font-size: .86rem; font-weight: 600; }
.color-field input[type="color"] { width: 52px; height: 36px; border-radius: 8px; border: 1.5px solid var(--border); padding: 2px; background: var(--white); }
.customize-group { display: grid; gap: 8px; }
.customize-label { font-size: .86rem; font-weight: 700; color: var(--navy); }
.customize-hint { font-size: .78rem; color: var(--muted); }

.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 7px 14px; border-radius: 999px; border: 1.5px solid var(--border);
  font-size: .84rem; font-weight: 600; color: var(--muted); background: var(--white);
  transition: all .15s var(--ease-out);
}
.chip:hover { border-color: var(--green); }
.chip.is-active { background: var(--green); border-color: var(--green); color: var(--white); }

.center-image-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.upload-btn {
  padding: 8px 14px; border-radius: var(--radius-sm); border: 1.5px dashed var(--border);
  font-size: .84rem; font-weight: 600; color: var(--navy); cursor: pointer;
  transition: border-color .15s var(--ease-out);
}
.upload-btn:hover { border-color: var(--green); }
.emoji-row { display: flex; gap: 6px; }
.emoji-btn {
  width: 34px; height: 34px; border-radius: 8px; border: 1.5px solid var(--border);
  font-size: 1.1rem; display: flex; align-items: center; justify-content: center;
  transition: border-color .15s var(--ease-out);
}
.emoji-btn:hover, .emoji-btn.is-active { border-color: var(--green); background: var(--ok-bg); }
.link-btn { font-size: .8rem; font-weight: 700; color: var(--danger); text-decoration: underline; }

/* --- Columna de vista previa --- */
.tool-card__preview-col { display: grid; gap: 16px; align-content: start; }
.preview-box {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; display: grid; justify-items: center; gap: 10px;
}
.preview-box canvas { width: 100%; max-width: 320px; height: auto; border-radius: 8px; }
.preview-caption { font-weight: 700; color: var(--navy); font-size: .95rem; min-height: 1.2em; }

.indicators { display: grid; gap: 8px; }
.indicator { display: flex; align-items: center; gap: 8px; font-size: .84rem; color: var(--muted); }
.indicator-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--border); flex: none; }
.indicator--ok .indicator-dot { background: var(--green); }
.indicator--warn .indicator-dot, .indicator[data-state-warn] .indicator-dot { background: #E0A000; }
.indicator--warn { color: var(--warn-text); background: var(--warn-bg); padding: 8px 10px; border-radius: 8px; }
.indicator--ok.indicator--text-ok .indicator-text { color: var(--ok-text); }

.scan-test-result { font-size: .86rem; display: grid; gap: 8px; }
.scan-test-result ul { display: grid; gap: 4px; padding-left: 4px; }
.scan-test-result li { list-style: disc; margin-left: 16px; color: var(--muted); }
.scan-test-ok { color: var(--ok-text); font-size: .95rem; }
.scan-test-warn { color: var(--warn-text); font-size: .95rem; }
.scan-test-fail { color: var(--danger); font-size: .95rem; }
.scan-test-disclaimer { color: var(--muted); font-size: .78rem; }

.download-panel { border-top: 1px solid var(--border); padding-top: 16px; display: grid; gap: 14px; }
.download-options { display: grid; gap: 10px; grid-template-columns: 1fr; }
@media (min-width: 480px) { .download-options { grid-template-columns: 1fr 1fr; } }
.download-buttons { display: flex; flex-wrap: wrap; gap: 10px; }
.download-buttons--secondary .btn { flex: 1 1 auto; }

.btn {
  padding: 11px 18px; border-radius: var(--radius-sm); font-weight: 700; font-size: .9rem;
  transition: all .16s var(--ease-out); display: inline-flex; align-items: center; justify-content: center; gap: 6px;
}
.btn--primary { background: var(--green); color: var(--white); }
.btn--primary:hover { background: var(--green-dark); }
.btn--secondary { background: var(--navy); color: var(--white); }
.btn--secondary:hover { background: var(--navy-dark); }
.btn--ghost { background: var(--surface); color: var(--navy); border: 1.5px solid var(--border); }
.btn--ghost:hover { border-color: var(--navy); }
.btn--full { width: 100%; }

/* =============================================================
   6. Anuncios (placeholders)
   ============================================================= */
.ad-slot {
  border: 1.5px dashed var(--border); border-radius: var(--radius-sm);
  color: var(--muted); font-size: .78rem; font-weight: 700; letter-spacing: .06em;
  display: flex; align-items: center; justify-content: center; background: var(--surface);
}
.ad-slot--banner { min-height: 90px; margin-top: 20px; }
.ad-slot--block { min-height: 120px; margin-block: 12px 32px; }
.ad-slot--popup { min-height: 200px; width: 100%; margin-bottom: 14px; }

.ad-corner {
  position: fixed; right: 14px; bottom: 14px; z-index: 50;
  background: var(--white); border: 1.5px dashed var(--border); border-radius: var(--radius-sm);
  box-shadow: var(--shadow); padding: 10px 34px 10px 14px; font-size: .72rem; font-weight: 700; color: var(--muted);
  min-width: 140px; min-height: 50px; display: flex; align-items: center; justify-content: center;
}
.ad-corner-close {
  position: absolute; top: 4px; right: 6px; width: 20px; height: 20px; border-radius: 50%;
  color: var(--muted); font-size: 1rem; line-height: 1; display: flex; align-items: center; justify-content: center;
}
.ad-corner-close:hover { background: var(--surface-2); }

dialog { border: none; border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-lg); max-width: min(92vw, 420px); }
dialog::backdrop { background: rgba(10, 16, 33, .5); }
.dialog-close { position: absolute; top: 12px; right: 14px; font-size: 1.3rem; color: var(--muted); width: 28px; height: 28px; }
.premium-dialog h2 { margin-bottom: 10px; }
.premium-dialog p { color: var(--muted); margin-bottom: 18px; }

/* =============================================================
   7. Plantillas
   ============================================================= */
.templates-section { padding-block: 32px; }
.section-subtitle { color: var(--muted); margin-top: 6px; margin-bottom: 20px; }
.templates-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
@media (min-width: 640px) { .templates-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 960px) { .templates-grid { grid-template-columns: repeat(4, 1fr); } }
.template-card {
  display: grid; justify-items: center; gap: 8px; text-align: center;
  padding: 18px 12px; border: 1.5px solid var(--border); border-radius: var(--radius);
  background: var(--white); transition: all .16s var(--ease-out);
}
.template-card:hover { border-color: var(--green); box-shadow: var(--shadow); transform: translateY(-2px); }
.template-icon { width: 30px; height: 30px; color: var(--green-dark); }
.template-icon .icon, .template-icon svg { width: 100%; height: 100%; }
.template-label { font-weight: 700; font-size: .9rem; color: var(--navy); }
.template-caption { font-size: .78rem; color: var(--muted); }

.templates-premium-title { margin-top: 32px; margin-bottom: 14px; font-size: 1.1rem; }
.template-card--premium { position: relative; opacity: .82; background: var(--surface); }
.template-lock { width: 26px; height: 26px; color: var(--muted); }
.template-premium-badge {
  position: absolute; top: 8px; right: 8px; background: var(--navy); color: var(--white);
  font-size: .62rem; font-weight: 800; padding: 3px 7px; border-radius: 999px; letter-spacing: .04em;
}

/* =============================================================
   8. Cómo funciona / ideas de uso / FAQ
   ============================================================= */
.how-it-works, .uso-ideas, .faq-section { padding-block: 32px; }
.how-it-works h2, .uso-ideas h2, .faq-section h2, .templates-section h2 { font-size: clamp(1.4rem, 3vw, 1.8rem); margin-bottom: 6px; }
.steps { display: grid; gap: 20px; margin-top: 20px; }
@media (min-width: 720px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.steps li { display: flex; gap: 14px; align-items: flex-start; }
.step-number {
  flex: none; width: 34px; height: 34px; border-radius: 50%; background: var(--navy); color: var(--white);
  display: flex; align-items: center; justify-content: center; font-weight: 800; font-family: var(--display);
}
.steps h3 { font-size: 1rem; margin-bottom: 4px; }
.steps p { color: var(--muted); font-size: .9rem; }

.uso-ideas-list { display: grid; gap: 10px; margin-top: 16px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .uso-ideas-list { grid-template-columns: 1fr 1fr; } }
.uso-ideas-list li {
  padding: 12px 16px; background: var(--surface); border-radius: var(--radius-sm);
  border-left: 3px solid var(--green); font-size: .92rem; color: var(--navy); font-weight: 600;
}

.faq-list { display: grid; gap: 10px; margin-top: 18px; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px 16px; background: var(--white); }
.faq-item summary { font-weight: 700; cursor: pointer; color: var(--navy); list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.3rem; color: var(--green-dark); flex: none; }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { margin-top: 10px; color: var(--muted); font-size: .92rem; }

.responsible-use { margin-top: 22px; font-size: .82rem; color: var(--muted); background: var(--surface); padding: 14px 16px; border-radius: var(--radius-sm); border: 1px solid var(--border); }

/* =============================================================
   9. Footer
   ============================================================= */
.site-footer { border-top: 1px solid var(--border); background: var(--navy); color: rgba(255,255,255,.82); padding-block: 28px; margin-top: 20px; }
.site-footer__inner { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center; font-size: .84rem; }
.footer-nav { display: flex; gap: 18px; }
.footer-nav a:hover { color: var(--white); text-decoration: underline; }

/* =============================================================
   10. Páginas legales simples
   ============================================================= */
.legal-page { max-width: 760px; margin-inline: auto; padding: 48px 16px 64px; }
.legal-page h1 { font-size: 1.8rem; margin-bottom: 18px; }
.legal-page h2 { font-size: 1.15rem; margin-top: 26px; margin-bottom: 8px; }
.legal-page p, .legal-page li { color: var(--muted); font-size: .95rem; margin-bottom: 10px; }
.legal-page li { list-style: disc; margin-left: 20px; }
.legal-back { display: inline-block; margin-bottom: 20px; font-weight: 700; color: var(--green-dark); }

/* =============================================================
   11. Utilidades responsive finales
   ============================================================= */
@media (max-width: 539px) {
  .tool-card { padding: 16px; }
  .download-buttons { flex-direction: column; }
  .download-buttons .btn { width: 100%; }
}