/* Niebla light theme. Content and behavior are shared with petroleo. */
:root {
  color-scheme: light;
  --ground: #d6e2e5;
  --ground-2: #c8d8dc;
  --surface: #ecf2f3;
  --surface-2: #f2f6f7;
  --shade: #062830;
  --line: #a9c3c9;
  --line-soft: #bcd0d5;
  --text: #0d2026;
  --muted: #344f58;
  --faint: #425b62;
  --brand: #036d80;
  --brand-dark: #025868;
  --accent: #025e6f;
  --accent-soft: #02505e;
  --glow: #036d80;
  --ok: #17795c;
  --warn: #8a6116;
  --err: #b42318;
  --err-line: #b42318;
  --display: "Newsreader", "Iowan Old Style", Georgia, serif;
  --sans: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", Consolas, monospace;
  --ink: var(--text);
  --ink-soft: var(--muted);
  --white: var(--text);
  --panel: var(--ground-2);
  --teal: var(--brand);
  --teal-2: var(--accent-soft);
  --navy: var(--shade);
  --green: var(--ok);
  --amber: var(--warn);
  --red: var(--err);
  --shadow: none;
  --radius: 8px;
  --max: 1160px;
  --header-h: 104px;
}

html { scroll-padding-top: 120px; }
body {
  background: var(--ground);
  color: var(--text);
  font: 400 17px/1.6 var(--sans);
}
body * { letter-spacing: 0; }
:is(a, button, input, select, textarea, summary, [tabindex]):focus-visible,
.contact-page :focus-visible,
.retana-page :is(a, button, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
::selection { background: var(--brand); color: #fff; }
.container, .hero-inner, .nav { width: min(100% - 48px, var(--max)); }
h1, h2, .section-head h2, .page-hero h1, .origin-intro h2,
.cta h2, .rt-section-head h2, .rt-cta h2, .retana-compact .rt-section-head h2 {
  color: var(--text);
  font-family: var(--display);
  font-weight: 400;
  font-size: 40px;
  line-height: 1.1;
  text-wrap: balance;
}
h1, .page-hero h1, .rt-hero h1, .retana-compact .rt-hero h1 {
  font-family: var(--display);
  font-size: 56px;
  font-weight: 400;
  line-height: 1.05;
}
h1 em, h2 em { color: var(--glow); }
h3, .card h3, .foundation-block h3, .rt-items h3, .pillar h3 {
  color: var(--text);
  font: 600 18px/1.3 var(--sans);
}
.section-head p, .foundation-block p, .origin-intro p,
.case-summary, .list, .case-card ul { color: var(--muted); font-size: 17px; }
.eyebrow, .tag, .case-kicker, .rt-label, .rt-brand-line,
.rc-number, .rt-flow-number {
  color: var(--accent);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
}
.tag { color: var(--faint); font-size: 11px; }
.section-head { gap: 40px; margin-bottom: 32px; }
.section, .content-band, .origin-section, .rt-section,
.retana-compact .rt-section { padding-block: 64px; }
.rt-section { scroll-margin-top: 120px; }
.section.alt, .origin-section, .rt-alt { background: var(--ground-2); }
.growth-section, .roadmap-section { padding-bottom: 36px; }
.roadmap-section + .operations-section,
.origin-section + .about-growth-section,
.decision-cards-section + .bi-foundation-section { padding-top: 36px; }
.decision-cards-section { padding-bottom: 36px; }

/* Preserve the centered mobile brand and the site's existing menu state. */
.site-header {
  background: rgba(214, 226, 229, .90);
  border-bottom-color: var(--line-soft);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.nav { min-height: var(--header-h); gap: 18px; }
.brand { gap: 12px; }
.brand-mark { width: 56px; height: 56px; }
.brand-word { color: var(--text); font: 700 28px/1 var(--sans); }
.brand-word span, .brand-tagline span { color: var(--accent); }
.brand-tagline { color: var(--muted); font: 500 13px/1.1 var(--sans); }
.nav-links { gap: 18px; color: var(--muted); font-size: 14px; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); }
.nav-actions { gap: 10px; flex-shrink: 0; }
.nav-actions .button { padding: 11px 16px; font-size: 14px; white-space: nowrap; }
.language-badge { width: 44px; height: 44px; font: 600 14px/1 var(--sans); color: #fff; }
.mobile-toggle { background: transparent; border-radius: 8px; color: var(--text); }
.mobile-toggle::before {
  border-color: var(--text);
  background-image: linear-gradient(var(--text), var(--text));
}
.button, .contact-submit {
  min-height: 44px;
  padding: 13px 20px;
  border: 1px solid var(--accent-soft);
  border-radius: 999px;
  background: var(--brand);
  color: #fff;
  font: 500 15px/1.25 var(--sans);
  text-align: center;
  transition: color .15s, background .15s, border-color .15s;
}
.button:hover { background: var(--accent-soft); }
.button.secondary, .hero .button.secondary, .page-hero .button.secondary,
.retana-compact .rt-hero .button.secondary, .rt-cta .button.secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}
.button.secondary:hover, .hero .button.secondary:hover,
.page-hero .button.secondary:hover, .retana-compact .rt-hero .button.secondary:hover {
  background: var(--surface-2);
  color: var(--text);
  border-color: var(--accent-soft);
}

/* Reuse each page's bitmap banner, rather than inventing a new hero layout. */
.hero, .page-hero, .contact-page .contact-hero, .retana-compact .rt-hero,
.page-hero.about-hero, .page-hero.cases-hero, .page-hero.nearshore-hero,
.page-hero.ai-automation-hero, .page-hero.retail-analytics-hero,
.page-hero.decision-intelligence-hero {
  --banner: url("../img/home-banner-optimized.webp");
  --shade: #051519;
  color-scheme: dark;
  --text: #f4fbfc;
  --muted: #cbe2e6;
  --faint: #9dbcc2;
  --accent: #62d6ea;
  --glow: #9fe3ef;
  --line: #4e7f8a;
  --line-soft: #4e7f8a;
  --ink: var(--text);
  --ink-soft: var(--muted);
  --white: var(--text);
  min-height: 0;
  color: var(--text);
  background: linear-gradient(90deg, rgba(5,21,25,.87), rgba(5,21,25,.65) 48%, rgba(5,21,25,.5)),
    var(--banner) center / cover no-repeat;
  background-color: #051519;
  filter: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom: 1px solid var(--line-soft);
}
.page-hero.about-hero { --banner: url("../img/about-banner-optimized.webp"); }
.page-hero.cases-hero { --banner: url("../img/cases-banner-optimized.webp"); }
.page-hero.nearshore-hero { --banner: url("../img/nearshore-banner-optimized.webp"); }
.page-hero.ai-automation-hero { --banner: url("../img/ai-automation-banner-optimized.webp"); }
.page-hero.retail-analytics-hero { --banner: url("../img/retail-analytics-banner-optimized.webp"); }
.page-hero.decision-intelligence-hero { --banner: url("../img/decision-intelligence-banner-optimized.webp"); }
.retana-compact .rt-hero { --banner: url("../img/retana-banner-optimized.webp"); }
/* Preserve Petroleum's effective page-specific banner treatment exactly. */
.page-hero.about-hero, .page-hero.cases-hero {
  background: linear-gradient(90deg, rgba(6,16,24,.94), rgba(6,16,24,.62)),
    var(--banner) center / cover no-repeat;
}
.page-hero.nearshore-hero, .page-hero.ai-automation-hero,
.page-hero.retail-analytics-hero, .page-hero.decision-intelligence-hero {
  background: linear-gradient(90deg, rgba(6,16,24,.94), rgba(6,16,24,.58)),
    var(--banner) center / cover no-repeat;
}
.hero::before, .hero::after, .page-hero::before, .page-hero::after,
.retana-compact .rt-hero::before, .retana-compact .rt-hero::after {
  filter: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.hero-inner { padding-block: 64px 56px; }
.page-hero, .contact-page .contact-hero, .retana-compact .rt-hero { padding-block: 60px 56px; }
.hero-copy, .page-hero p, .retana-compact .rt-hero-copy {
  color: var(--muted);
  font: 300 20px/1.6 var(--sans);
  max-width: 64ch;
}
.hero-proof { margin-top: 40px; border-color: var(--line); background: var(--line); border-radius: 8px; overflow: hidden; }
.proof-item { background: rgba(7,27,32,.87); min-height: 0; }
.proof-item strong { color: var(--text); font: 600 16px/1.35 var(--sans); }
.proof-item span { color: var(--muted); font-size: 15.5px; }
.rc-name-origin { color: var(--muted); font-size: 24px; }
.rc-name-origin strong, .retana-compact .rt-hero .rt-brand-line { color: var(--accent); }
.rt-hero:not(.retana-compact .rt-hero) { background: var(--ground); color: var(--text); }
.rt-hero-title, .retana-compact .rt-hero-title { font: 400 32px/1.25 var(--display); color: var(--text); }

.card, .card.dark, .roadmap-step, .pillar, .case-detail,
.rc-module, .rc-metric {
  background: var(--surface);
  border-color: var(--line);
  color: var(--text);
  box-shadow: none;
  border-radius: 8px;
}
.card, .roadmap-step { padding: 30px 28px; }
.card:hover, .roadmap-step:hover, .rc-module:hover { background: var(--surface-2); }
.card p, .card.dark p, .roadmap-step p, .pillar p,
.case-section p, .case-section ul { color: var(--muted); font-size: 15.5px; }
.roadmap-step { min-height: 0; }
.roadmap-step span { color: var(--faint); font: 500 14px/1.45 var(--mono); }
.roadmap-step strong { display: block; font: 600 17px/1.4 var(--sans); }
.roadmap-step:nth-child(1) strong, .roadmap-step:nth-child(5) strong { color: var(--accent); }
.roadmap-step:nth-child(2) strong { color: var(--err); }
.roadmap-step:nth-child(3) strong { color: var(--ok); }
.roadmap-step:nth-child(4) strong { color: var(--warn); }
.case-detail.featured { border-top-color: var(--accent-soft); }
.case-detail h3 { font: 400 30px/1.2 var(--display); }
.case-section { border-color: var(--line); }
.impact-metric { background: var(--surface-2); border-radius: 8px; }
.impact-metric strong { color: var(--glow); font: 400 30px/1.05 var(--display); font-variant-numeric: tabular-nums; }
.impact-metric span { color: var(--muted); font-size: 14px; }
.pillar-mark { background: var(--brand); color: #fff; border-radius: 8px; }
.visual-panel {
  --text: #f4fbfc;
  --muted: #cbe2e6;
  --line: #4e7f8a;
  --white: var(--text);
  color: var(--text);
}
.visual-panel { background: var(--shade); box-shadow: none; }
.iceberg {
  background: linear-gradient(rgba(6,40,48,.12), rgba(6,40,48,.72)),
    url("../img/bi-iceberg-wide.png") center / contain no-repeat;
  background-color: var(--shade);
}
.iceberg-label { background: rgba(6,40,48,.82); border-color: var(--line); }
.iceberg-label span { color: var(--muted); }
.case-location { color: var(--faint); }

.cta, .rt-cta {
  --text: #f4fbfc;
  --muted: #cbe2e6;
  --faint: #9dbcc2;
  --accent: #62d6ea;
  --glow: #9fe3ef;
  --line: #4e7f8a;
  --line-soft: #4e7f8a;
  --ink: var(--text);
  --ink-soft: var(--muted);
  --white: var(--text);
  padding-block: 64px;
  color: var(--text);
  background: var(--shade);
  border-block: 1px solid var(--line-soft);
}
.cta h2 { font-size: 40px; }
.cta p { color: var(--muted); }
.cta .button:not(.secondary), .rt-cta .button:not(.secondary) { background: #fff; color: var(--shade); border-color: #fff; }
.cta .button:not(.secondary):hover, .rt-cta .button:not(.secondary):hover { background: var(--glow); border-color: var(--glow); }
.site-footer { padding-block: 28px 36px; background: var(--ground); border-color: var(--line-soft); }
.footer-inner { color: var(--faint); font: 400 12px/1.6 var(--mono); }
.site-footer .registered-mark { font-size: 1.2em; line-height: 1; }

/* Contact: adapt visual states without changing validation or the honeypot. */
.contact-page .contact-layout { gap: 44px; }
.contact-page .contact-heading { font: 400 28px/1.2 var(--display); }
.contact-form {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  scroll-margin-top: 120px;
}
.contact-field label { color: var(--muted); font: 500 14px/1.5 var(--sans); }
.contact-field input, .contact-field select, .contact-field textarea {
  background: var(--ground-2);
  color: var(--text);
  border-color: var(--line);
  border-radius: 8px;
  font: 400 16px/1.5 var(--sans);
}
.contact-field input:focus, .contact-field select:focus, .contact-field textarea:focus { border-color: var(--accent); }
.contact-field [aria-invalid="true"] { border-color: var(--err-line); }
.contact-error, .contact-status[data-state="error"] { color: var(--err); }
.contact-status[data-state="success"] { color: var(--ok); }
.contact-status:not(:empty) { padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
.contact-hint, .contact-required { color: var(--faint); }
.contact-local-note { background: var(--surface); color: var(--warn); border-color: var(--warn); }
.contact-page main a:not(.button) { color: var(--accent); }
.contact-details { border-color: var(--line); }
.contact-details p { color: var(--muted); }
.contact-submit:disabled { opacity: .6; }
.contact-page .contact-skip-link { color: #fff; }
.contact-captcha { display: grid; grid-template-columns: 136px 120px; gap: 16px; align-items: stretch; }
.contact-captcha-question {
  display: flex;
  min-height: 60px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--ground-2);
  color: var(--accent);
  font: 500 23px/1 var(--mono);
}
.contact-captcha input { min-height: 60px; text-align: center; font-size: 23px; }

/* Retana's tables, product previews, lightbox, and specialized sections. */
.rt-preview { background: var(--ground); }
.rt-items article { border-color: var(--line); }
.rt-items p, .rc-module p, .rc-benefits p { color: var(--muted); }
.rt-image-button, .rt-image-button:hover { background: var(--surface); color: var(--text); border-color: var(--line); box-shadow: none; }
.rt-image-button:hover { border-color: var(--accent); }
.rt-table-wrap { background: var(--surface); }
.rt-table thead th { background: var(--surface-2); color: var(--faint); font: 500 12px/1.5 var(--mono); }
.rt-table :is(th, td) { border-color: var(--line-soft); }
.rt-table td { color: var(--muted); }
.rt-comparison :is(th, td):last-child { background: var(--surface-2); }
.rt-table tbody th { color: var(--text); }
.rt-price-band strong, .rt-commercial-price strong, .rc-metric h2 {
  color: var(--glow);
  font-family: var(--display);
  font-weight: 400;
  font-variant-numeric: tabular-nums;
}
.rc-metric h2 { font-size: 30px; }
.rc-metric-3 { border-top-color: var(--warn); }
.rt-data { background: var(--ground-2); color: var(--text); }
.rt-data :is(.rt-section-head p, .rt-list) { color: var(--muted); }
.rt-flow li:not(:last-child)::after, .rt-faq summary::after,
.rt-flow .rt-flow-number, .rc-number { color: var(--accent); }
.rt-flow li { min-width: 0; }
.rt-faq { border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: var(--surface); }
.rt-faq details { border-color: var(--line); padding-inline: 24px; }
.rt-faq summary { color: var(--text); font-size: 16.5px; }
.rt-faq details p { color: var(--muted); font-size: 15.5px; }
.rt-lightbox { background: var(--surface); color: var(--text); border: 1px solid var(--line); }
.rt-close { background: var(--surface); color: var(--text); }
.rt-lightbox::backdrop { background: rgba(6,40,48,.9); }

@media (max-width: 1040px) {
  .nav { grid-template-columns: 44px minmax(0, 1fr) 44px; gap: 8px; }
  .nav-actions .button { display: none; }
  .nav-links { top: var(--header-h); background: var(--ground); border-color: var(--line); }
  .nav-links a { border-bottom: 1px solid var(--line-soft); font-size: 16px; }
}
@media (max-width: 900px) {
  .grid-3, .grid-4, .foundation-grid, .pillar-grid, .roadmap { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section-head, .split, .case-detail { grid-template-columns: minmax(0, 1fr); }
  .section-head { gap: 20px; }
  .hero-proof { grid-template-columns: minmax(0, 1fr); }
  .section, .content-band, .origin-section, .rt-section, .retana-compact .rt-section { padding-block: 48px; }
  .roadmap-section, .growth-section, .decision-cards-section { padding-bottom: 28px; }
  .roadmap-section + .operations-section, .origin-section + .about-growth-section,
  .decision-cards-section + .bi-foundation-section { padding-top: 28px; }
  h1, .page-hero h1 { font-size: 44px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 600px) {
  .container, .hero-inner, .nav { width: min(100% - 32px, var(--max)); }
  .grid-2, .grid-3, .grid-4, .foundation-grid, .pillar-grid, .roadmap { grid-template-columns: minmax(0, 1fr); }
  .brand { gap: 9px; }
  .brand-mark { width: 52px; height: 52px; }
  .brand-word { font-size: 27px; }
  .brand-tagline { font-size: 12px; }
  .hero-inner { padding-block: 44px 36px; }
  .page-hero, .contact-page .contact-hero, .retana-compact .rt-hero { padding-block: 44px 36px; }
  h1, .page-hero h1, .contact-page .contact-hero h1 { font-size: 36px; }
  h2, .section-head h2, .origin-intro h2, .cta h2,
  .rt-section-head h2, .rt-cta h2, .retana-compact .rt-section-head h2 { font-size: 30px; }
  .hero-copy, .page-hero p, .retana-compact .rt-hero-copy { font-size: 17px; }
  .card, .roadmap-step, .pillar, .case-detail { padding: 24px 22px; }
  .contact-page .content-band { padding-block: 40px; }
  .contact-form { padding: 22px 18px; }
  .contact-form-grid { grid-template-columns: minmax(0, 1fr); }
  .contact-page .contact-layout { gap: 36px; }
  .rc-name-origin { font-size: 21px; }
  .rt-hero-title, .retana-compact .rt-hero-title { font-size: 27px; }
}
@media (max-width: 360px) {
  .contact-captcha { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 12px; }
  .brand-mark { width: 44px; height: 44px; }
  .brand-word { font-size: 24px; }
  .brand-tagline { font-size: 10px; }
  .brand { gap: 7px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}