@import url('/assets/fonts/fonts.css');

:root {
  --bg: #f4f2e9;
  --surface: #fffefa;
  --surface-muted: #ece9dd;
  --ink: #17231f;
  --muted: #5d6b66;
  --border: #cfd5cb;
  --border-strong: #9eaaa2;
  --green: #0b6b53;
  --green-dark: #07513f;
  --green-soft: #dcebe5;
  --water: #087e8b;
  --water-soft: #dceff1;
  --terra: #a85227;
  --terra-soft: #f5e5dc;
  --warning: #7d5310;
  --warning-soft: #fbf1d6;
  --max: 1240px;
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 10px 24px rgba(23, 35, 31, 0.07);
  --sora: 'Sora', ui-sans-serif, system-ui, sans-serif;
  --inter: 'Inter', ui-sans-serif, system-ui, sans-serif;
  --plex: 'IBM Plex Sans', ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--inter);
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}
button, input, select { font: inherit; }
a { color: var(--green-dark); text-underline-offset: 3px; }
a:hover { color: var(--green); }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid rgba(8,126,139,.35); outline-offset: 3px; }
[hidden] { display: none !important; }

.skip-link {
  position: fixed; left: 16px; top: -80px; z-index: 100;
  background: var(--ink); color: white; padding: 10px 14px; border-radius: var(--radius);
}
.skip-link:focus { top: 16px; }
.shell { width: min(var(--max), calc(100% - 40px)); margin-inline: auto; }

.site-header {
  background: rgba(255,254,250,.96);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(10px);
}
.header-inner { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.wordmark { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.wordmark-mark {
  width: 25px; height: 31px; display: inline-grid; place-items: center;
  border: 2px solid var(--green); border-radius: 50% 50% 52% 48% / 61% 61% 39% 39%;
  transform: rotate(45deg); background: var(--green-soft);
}
.wordmark-mark::after { content: ''; width: 7px; height: 7px; background: var(--water); border-radius: 50%; }
.wordmark strong { font: 700 20px/1 var(--sora); letter-spacing: -.03em; }
.wordmark small { display: block; font: 500 11px/1.2 var(--plex); color: var(--muted); letter-spacing: .06em; text-transform: uppercase; margin-top: 4px; }
.nav { display: flex; gap: 6px; align-items: center; }
.nav a { color: var(--ink); text-decoration: none; font-weight: 600; font-size: 14px; padding: 9px 11px; border-radius: var(--radius); }
.nav a:hover { background: var(--surface-muted); }
.nav .nav-primary { background: var(--green); color: white; }
.nav .nav-primary:hover { background: var(--green-dark); color: white; }

.utility { background: var(--ink); color: #e9f0ec; font: 500 12px/1.3 var(--plex); }
.utility-inner { min-height: 34px; display: flex; align-items: center; gap: 26px; white-space: nowrap; overflow-x: auto; scrollbar-width: none; }
.utility-inner::-webkit-scrollbar { display: none; }
.utility span { display: inline-flex; align-items: center; gap: 7px; }
.utility i { width: 7px; height: 7px; border-radius: 50%; background: #75d1ac; box-shadow: 0 0 0 3px rgba(117,209,172,.13); }
.utility .pending-dot { background: #e4b75b; box-shadow: 0 0 0 3px rgba(228,183,91,.13); }

.intro { padding: 44px 0 34px; border-bottom: 1px solid var(--border); }
.intro-grid { display: grid; grid-template-columns: minmax(0, 1fr) 310px; gap: 44px; align-items: end; }
.kicker { margin: 0 0 10px; color: var(--green-dark); font: 600 12px/1.2 var(--plex); text-transform: uppercase; letter-spacing: .09em; }
h1, h2, h3 { font-family: var(--sora); margin-top: 0; }
h1 { font-size: clamp(34px, 4.2vw, 58px); line-height: 1.03; letter-spacing: -.045em; max-width: 850px; margin-bottom: 18px; }
.lead { font-size: clamp(17px, 1.5vw, 20px); color: var(--muted); max-width: 760px; margin: 0; }
.intro-note { background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--water); border-radius: var(--radius); padding: 17px 18px; box-shadow: var(--shadow); }
.intro-note strong { display: block; font-family: var(--sora); font-size: 14px; margin-bottom: 5px; }
.intro-note p { margin: 0; color: var(--muted); font-size: 13px; }

.comparator-section { padding: 34px 0 58px; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 20px; }
.section-heading h2 { font-size: clamp(25px, 3vw, 36px); line-height: 1.1; letter-spacing: -.03em; margin-bottom: 6px; }
.section-heading p { margin: 0; color: var(--muted); }
.result-count { font: 600 12px/1.3 var(--plex); color: var(--green-dark); background: var(--green-soft); border: 1px solid #b9d6ca; padding: 7px 10px; border-radius: 999px; white-space: nowrap; }
.comparator-layout { display: grid; grid-template-columns: 288px minmax(0, 1fr); gap: 20px; align-items: start; }
.filters {
  position: sticky; top: 90px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 20px; box-shadow: var(--shadow);
}
.filters h3 { font-size: 17px; margin-bottom: 18px; }
.field { margin-bottom: 16px; }
.field label, .field-label { display: block; margin-bottom: 6px; font: 600 12px/1.35 var(--plex); color: #37463f; letter-spacing: .01em; }
.field input[type='search'], .field input[type='number'], .field select {
  display: block; width: 100%; min-height: 44px; border: 1px solid var(--border-strong); background: white;
  border-radius: var(--radius); color: var(--ink); padding: 9px 11px;
}
.field input:focus, .field select:focus { border-color: var(--water); box-shadow: 0 0 0 3px rgba(8,126,139,.11); outline: none; }
.check-field { display: flex; gap: 10px; align-items: flex-start; min-height: 42px; color: var(--ink); cursor: pointer; }
.check-field input { width: 18px; height: 18px; margin: 2px 0 0; accent-color: var(--green); flex: 0 0 auto; }
.check-field span { font-size: 14px; }
.button-secondary, .compare-toggle, .button-text {
  min-height: 42px; border: 1px solid var(--border-strong); background: white; color: var(--ink);
  border-radius: var(--radius); padding: 9px 13px; font-weight: 650; cursor: pointer;
}
.button-secondary { width: 100%; }
.button-secondary:hover, .compare-toggle:hover { border-color: var(--green); color: var(--green-dark); background: var(--green-soft); }
.filters-foot { margin: 15px 0 0; padding-top: 14px; border-top: 1px solid var(--border); color: var(--muted); font-size: 12px; }

.product-list { display: grid; gap: 12px; }
.loading-card { min-height: 190px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); display: grid; place-items: center; color: var(--muted); }
.product-row {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 22px; display: grid; grid-template-columns: minmax(0, 1fr) 190px; gap: 22px;
  transition: border-color .18s, box-shadow .18s, transform .18s;
}
.product-row:hover { border-color: var(--border-strong); box-shadow: var(--shadow); }
.product-row.is-selected { border-color: var(--green); box-shadow: inset 4px 0 0 var(--green); }
.eyebrow-line { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 8px; }
.brand { color: var(--green-dark); font: 700 12px/1.2 var(--plex); text-transform: uppercase; letter-spacing: .08em; }
.fit { font: 600 11px/1.2 var(--plex); padding: 4px 7px; border-radius: var(--radius-sm); background: var(--surface-muted); color: var(--muted); }
.fit-verified { background: var(--green-soft); color: var(--green-dark); }
.fit-conditional, .fit-unknown { background: var(--warning-soft); color: var(--warning); }
.fit-incompatible_thread { background: var(--terra-soft); color: var(--terra); }
.product-row h3 { font-size: clamp(19px, 2vw, 24px); line-height: 1.15; letter-spacing: -.025em; margin-bottom: 7px; }
.sku { margin: 0 0 16px; color: var(--muted); font: 500 12px/1.4 var(--plex); }
.spec-grid { margin: 0; display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.spec-grid div { padding: 10px 11px; min-width: 0; background: #fbfaf5; border-right: 1px solid var(--border); }
.spec-grid div:last-child { border-right: 0; }
.spec-grid dt { font: 500 10px/1.2 var(--plex); color: var(--muted); text-transform: uppercase; letter-spacing: .05em; margin-bottom: 4px; }
.spec-grid dd { margin: 0; font: 600 13px/1.35 var(--plex); overflow-wrap: anywhere; }
.evidence { margin-top: 14px; border-top: 1px solid var(--border); padding-top: 11px; }
.evidence summary { color: var(--water); font: 600 12px/1.3 var(--plex); cursor: pointer; width: fit-content; }
.evidence-body { padding: 10px 12px; margin-top: 8px; background: var(--water-soft); border-radius: var(--radius); font-size: 13px; }
.evidence-body p { margin: 0 0 7px; }
.evidence-body p:last-child { margin-bottom: 0; }
.warning-note { color: var(--terra); }
.row-actions { display: flex; flex-direction: column; justify-content: center; gap: 9px; }
.compare-toggle { width: 100%; font-size: 13px; }
.compare-toggle.selected { background: var(--green); color: white; border-color: var(--green); }
.amazon-cta { display: grid; place-items: center; min-height: 44px; border-radius: var(--radius); background: #ff9900; color: #17231f; font-weight: 750; text-decoration: none; }
.amazon-cta:hover { background: #e88b00; color: #17231f; }
.amazon-pending { display: grid; place-items: center; min-height: 44px; border-radius: var(--radius); border: 1px dashed var(--border-strong); color: var(--muted); background: var(--surface-muted); text-align: center; font-size: 12px; padding: 7px; }
.empty-state, .error-state { padding: 36px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); }
.error-state { border-left: 4px solid var(--terra); }
.error-state span { display: block; color: var(--muted); margin-top: 5px; }

.comparison { margin-top: 24px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 22px; box-shadow: var(--shadow); }
.comparison-head { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 15px; }
.comparison h3 { margin: 0; font-size: 20px; }
.compare-badge { font: 600 12px/1 var(--plex); background: var(--green); color: white; padding: 5px 8px; border-radius: 999px; margin-left: 6px; }
.button-text { border: 0; min-height: auto; padding: 7px; color: var(--terra); background: transparent; }
.compare-limit { min-height: 20px; color: var(--terra); font-size: 13px; margin: 0 0 8px; }
.comparison-scroll { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; min-width: 620px; }
th, td { padding: 12px 13px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
thead th { background: var(--ink); color: white; font: 600 13px/1.35 var(--plex); }
thead th span { color: #bfd0c8; font-weight: 500; }
tbody th { width: 150px; background: var(--surface-muted); font: 600 12px/1.35 var(--plex); }
tbody td { font-size: 14px; }
tr:last-child th, tr:last-child td { border-bottom: 0; }

.calculator-section { padding: 64px 0; background: var(--ink); color: white; }
.calculator-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(500px, 1.2fr); gap: 60px; align-items: start; }
.calculator-copy .kicker { color: #80d5b4; }
.calculator-copy h2 { font-size: clamp(28px, 3.5vw, 44px); line-height: 1.08; letter-spacing: -.035em; margin-bottom: 17px; }
.calculator-copy p { color: #c4d0ca; max-width: 560px; }
.calculator-copy ul { color: #dbe3df; padding-left: 20px; }
.calculator-card { background: var(--surface); color: var(--ink); border-radius: var(--radius-lg); padding: 24px; box-shadow: 0 18px 44px rgba(0,0,0,.24); }
.calculator-fields { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; }
.calculator-card button { width: 100%; min-height: 46px; border: 0; border-radius: var(--radius); background: var(--green); color: white; font-weight: 750; cursor: pointer; }
.calculator-card button:hover { background: var(--green-dark); }
.calculator-result { margin-top: 14px; border-radius: var(--radius); padding: 14px; min-height: 58px; background: var(--surface-muted); }
.calculator-result:empty::before { content: 'Introduce los datos para obtener una estimación.'; color: var(--muted); }
.calculator-result strong, .calculator-result span { display: block; }
.calculator-result.success { background: var(--green-soft); border-left: 4px solid var(--green); }
.calculator-result.error { background: var(--terra-soft); color: var(--terra); border-left: 4px solid var(--terra); }
.calculator-disclaimer { color: var(--muted); font-size: 12px; margin: 12px 0 0; }

.method-section { padding: 64px 0; }
.method-grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: 60px; }
.method-grid h2 { font-size: clamp(28px, 3vw, 40px); line-height: 1.1; letter-spacing: -.03em; }
.method-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--border-strong); }
.method-list li { display: grid; grid-template-columns: 56px 1fr; gap: 15px; padding: 19px 0; border-bottom: 1px solid var(--border); }
.method-list b { font: 650 12px/1.3 var(--plex); color: var(--water); }
.method-list strong { display: block; font-family: var(--sora); margin-bottom: 4px; }
.method-list p { color: var(--muted); margin: 0; font-size: 14px; }
.disclosure { background: var(--warning-soft); border-block: 1px solid #dec58f; padding: 20px 0; color: #5a4316; font-size: 14px; }
.disclosure p { margin: 0; }

.site-footer { background: #101915; color: #d8e0dc; padding: 34px 0; }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: end; }
.site-footer .wordmark { color: white; }
.site-footer p { color: #99aaa2; font-size: 13px; max-width: 620px; margin: 12px 0 0; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 18px; }
.footer-links a { color: #d8e0dc; font-size: 13px; }

.legal-main { padding: 48px 0 72px; }
.legal-layout { display: grid; grid-template-columns: 230px minmax(0, 760px); gap: 48px; }
.legal-nav { position: sticky; top: 94px; align-self: start; }
.legal-nav a { display: block; padding: 7px 0; font-size: 14px; }
.legal-content h1 { font-size: clamp(34px, 5vw, 54px); }
.legal-content h2 { margin-top: 34px; font-size: 23px; }
.legal-content p, .legal-content li { color: #44524c; }
.notice-box { padding: 16px; background: var(--warning-soft); border-left: 4px solid #c58a28; border-radius: var(--radius); }

@media (max-width: 960px) {
  .intro-grid, .method-grid { grid-template-columns: 1fr; gap: 24px; }
  .intro-note { max-width: 560px; }
  .comparator-layout { grid-template-columns: 1fr; }
  .filters { position: static; display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 0 14px; }
  .filters h3, .filters-foot, .filters .button-secondary { grid-column: 1 / -1; }
  .calculator-grid { grid-template-columns: 1fr; gap: 28px; }
  .legal-layout { grid-template-columns: 1fr; }
  .legal-nav { position: static; display: flex; gap: 14px; flex-wrap: wrap; border-bottom: 1px solid var(--border); padding-bottom: 14px; }
}

@media (max-width: 720px) {
  .shell { width: min(100% - 28px, var(--max)); }
  .site-header { position: static; }
  .header-inner { min-height: 62px; }
  .wordmark small { display: none; }
  .nav a:not(.nav-primary) { display: none; }
  .nav .nav-primary { padding: 8px 10px; font-size: 13px; }
  .intro { padding: 34px 0 28px; }
  h1 { font-size: 35px; overflow-wrap: anywhere; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .comparator-section { padding-top: 28px; }
  .filters { display: block; padding: 17px; }
  .product-row { grid-template-columns: 1fr; padding: 18px; gap: 16px; }
  .spec-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .spec-grid div { border-bottom: 1px solid var(--border); }
  .spec-grid div:nth-child(2) { border-right: 0; }
  .spec-grid div:nth-last-child(-n+2) { border-bottom: 0; }
  .row-actions { display: grid; grid-template-columns: 1fr; }
  .calculator-section, .method-section { padding: 48px 0; }
  .calculator-fields { grid-template-columns: 1fr; }
  .comparison { padding: 16px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }
}

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