/* ==========================================================================
   css/styles.css — Alianza Ingeomed Colombia
   Centralized design system, components, layout and responsive rules.
   ========================================================================== */

/* ---------- 1. Design tokens ---------- */
:root {
  --color-background: #0F1E2A;
  --color-surface: #1A2F40;
  --color-accent-gold: #D4AF37;
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #B0BEC5;
  --color-accent-blue: #1E88E5;

  --color-border: rgba(255, 255, 255, 0.12);
  --color-border-strong: rgba(255, 255, 255, 0.24);
  --color-overlay: rgba(15, 30, 42, 0.72);
  --color-overlay-strong: rgba(15, 30, 42, 0.88);
  --color-gold-soft: rgba(212, 175, 55, 0.14);
  --color-blue-soft: rgba(30, 136, 229, 0.14);
  --color-danger: #FF6B6B;
  --color-success: #4DB6AC;

  --font-sans: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-serif: "Playfair Display", Georgia, "Times New Roman", serif;

  --text-xs: 0.8125rem;
  --text-sm: 0.9375rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.75rem;
  --text-5xl: 3.5rem;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.18);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.28);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.36);

  --container: 1200px;
  --header-height: 76px;
  --transition-fast: 160ms ease;
  --transition-base: 260ms ease;
  --transition-slow: 420ms ease;

  --grid-gap: 22px;
}

/* ---------- 2. Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 12px);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
img { height: auto; }

a { color: inherit; text-decoration: none; }
ul, ol { padding: 0; margin: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }

:focus-visible {
  outline: 2px solid var(--color-accent-gold);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  z-index: 1000;
  padding: var(--space-3) var(--space-5);
  background: var(--color-accent-gold);
  color: var(--color-background);
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: top var(--transition-fast);
}
.skip-link:focus { top: var(--space-4); }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(var(--space-5), 4vw, var(--space-8));
}

.section {
  position: relative;
  padding: clamp(var(--space-16), 9vw, var(--space-24)) 0;
}

/* ---------- 3. Typography ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent-gold);
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
}
.eyebrow--blue { color: var(--color-accent-blue); }

.section__header {
  max-width: 760px;
  margin: 0 auto var(--space-12);
  text-align: center;
}
.section__header--left { text-align: left; margin-left: 0; }

.section__title {
  font-family: var(--font-sans);
  font-size: clamp(var(--text-2xl), 4.2vw, var(--text-4xl));
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-top: var(--space-3);
}
.section__lead {
  color: var(--color-text-secondary);
  margin-top: var(--space-4);
  font-size: var(--text-lg);
  line-height: 1.55;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.1rem, 5.6vw, 4rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: var(--space-4) 0 var(--space-5);
}

/* ---------- 4. Header & nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: rgba(15, 30, 42, 0.78);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}
.site-header.is-scrolled {
  background: rgba(15, 30, 42, 0.94);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.24);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 100%;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  line-height: 1;
  gap: 2px;
}
.brand__mark {
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: 0.22em;
  color: var(--color-accent-gold);
}
.brand__name {
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-text-primary);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}
.site-nav__list a {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  position: relative;
  padding: var(--space-2) 0;
  transition: color var(--transition-fast);
}
.site-nav__list a:hover,
.site-nav__list a:focus-visible { color: var(--color-text-primary); }
.site-nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent-gold);
  transition: width var(--transition-base);
}
.site-nav__list a:hover::after,
.site-nav__list a:focus-visible::after { width: 100%; }

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 9px;
}
.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85rem 1.5rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--gold {
  background: var(--color-accent-gold);
  color: var(--color-background);
  box-shadow: 0 8px 20px rgba(212, 175, 55, 0.22);
}
.btn--gold:hover { background: #E0BC4A; box-shadow: 0 12px 28px rgba(212, 175, 55, 0.30); }
.btn--ghost {
  background: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
}
.btn--ghost:hover { border-color: var(--color-accent-gold); color: var(--color-accent-gold); }
.btn--nav { padding: 0.6rem 1.2rem; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

/* ---------- 5. Hero ---------- */
.hero {
  position: relative;
  min-height: calc(100svh - var(--header-height));
  display: flex;
  align-items: center;
  padding: var(--space-16) 0 var(--space-10);
  overflow: hidden;
  isolation: isolate;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: saturate(0.9) brightness(0.72);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(15,30,42,0.28) 0%, rgba(15,30,42,0.55) 55%, rgba(15,30,42,0.92) 100%),
    radial-gradient(60% 50% at 80% 20%, rgba(30,136,229,0.12), transparent 70%);
}
.hero__inner { position: relative; }

.hero__content { max-width: 720px; }
.hero__text {
  color: var(--color-text-secondary);
  font-size: var(--text-lg);
  line-height: 1.6;
  max-width: 58ch;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.hero__partners {
  position: relative;
  margin-top: var(--space-16);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}
.hero__partners-inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}
.partner-chip {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  background: rgba(255,255,255,0.03);
  letter-spacing: 0.02em;
}

/* ---------- 6. Alliance diagram ---------- */
.section--alliance {
  background:
    radial-gradient(70% 60% at 10% 10%, rgba(30,136,229,0.08), transparent 70%),
    var(--color-background);
}

.diagram { margin-top: var(--space-4); }
.diagram__stage {
  position: relative;
  width: 100%;
  height: clamp(320px, 62vw, 560px);
  max-width: 820px;
  margin: 0 auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 50% 50%, rgba(212,175,55,0.06), transparent 55%),
    rgba(26,47,64,0.45);
}
.diagram__lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.diagram__lines line {
  stroke: rgba(212,175,55,0.45);
  stroke-width: 0.6;
  stroke-dasharray: 1.2 1.2;
}

.diagram__node {
  position: absolute;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-strong);
  background: rgba(15,30,42,0.85);
  backdrop-filter: blur(6px);
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  left: var(--x, 50%);
  top: var(--y, 50%);
}
.diagram__node--center {
  width: clamp(118px, 16vw, 150px);
  height: clamp(118px, 16vw, 150px);
  border-radius: 50%;
  border-color: var(--color-accent-gold);
  background: linear-gradient(160deg, rgba(212,175,55,0.18), rgba(15,30,42,0.95));
  box-shadow: 0 0 0 6px rgba(212,175,55,0.08), 0 12px 40px rgba(0,0,0,0.35);
  cursor: default;
}
.node__label { font-size: var(--text-xs); color: var(--color-text-secondary); letter-spacing: 0.1em; text-transform: uppercase; }
.node__title { font-size: var(--text-sm); font-weight: 800; color: var(--color-text-primary); }
.diagram__node--center .node__title { font-size: var(--text-base); color: var(--color-accent-gold); }

.diagram__node--partner {
  width: clamp(128px, 18vw, 170px);
  cursor: pointer;
  background: rgba(26,47,64,0.9);
}
.diagram__node--partner .node__title { font-size: var(--text-sm); }
.node__sub { font-size: var(--text-xs); color: var(--color-text-secondary); margin-top: 2px; }
.diagram__node--partner:hover,
.diagram__node--partner:focus-visible {
  border-color: var(--color-accent-blue);
  transform: translate(-50%, -50%) translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.diagram__node--partner.is-active {
  border-color: var(--color-accent-gold);
  background: rgba(212,175,55,0.10);
  box-shadow: 0 0 0 4px rgba(212,175,55,0.12);
}

.diagram__status {
  margin: var(--space-6) auto var(--space-2);
  max-width: 620px;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  min-height: 1.4em;
}

.diagram__details {
  max-width: 720px;
  margin: var(--space-4) auto 0;
}
.diagram__details [data-partner-detail] {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-6);
  background: rgba(26,47,64,0.5);
}
.diagram__details [data-partner-detail] h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
  color: var(--color-accent-gold);
}
.diagram__details [data-partner-detail] p { color: var(--color-text-secondary); margin-bottom: var(--space-4); }
.diagram__details ul { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.diagram__details li {
  font-size: var(--text-xs);
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  color: var(--color-text-secondary);
}
.diagram__details [hidden] { display: none; }

.alliance-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--grid-gap);
  margin-top: var(--space-12);
}
.pillar {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  background: rgba(26,47,64,0.4);
}
.pillar h3 { font-size: var(--text-base); margin-bottom: var(--space-2); color: var(--color-accent-gold); }
.pillar p { font-size: var(--text-sm); color: var(--color-text-secondary); }

/* ---------- 7. Methodology ---------- */
.section--method { background: var(--color-surface); }
.steps {
  max-width: 880px;
  margin: 0 auto;
  display: grid;
  gap: var(--space-4);
  position: relative;
}
.step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: var(--space-5);
  align-items: start;
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(15,30,42,0.5);
  position: relative;
}
.step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 32px;
  top: calc(100% + 2px);
  width: 1px;
  height: var(--space-4);
  background: var(--color-accent-gold);
  opacity: 0.5;
}
.step__marker {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: var(--text-base);
  color: var(--color-background);
  background: var(--color-accent-gold);
  box-shadow: 0 6px 18px rgba(212,175,55,0.22);
}
.step__title { font-size: var(--text-lg); font-weight: 700; margin-bottom: var(--space-2); }
.step__body p { color: var(--color-text-secondary); font-size: var(--text-sm); }

/* ---------- 8. Sectors ---------- */
.section--sectors { isolation: isolate; overflow: hidden; }
.sectors__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.sectors__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.6) brightness(0.3);
}
.section--sectors::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, var(--color-background) 0%, rgba(15,30,42,0.65) 40%, var(--color-background) 100%);
}
.sectors-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--grid-gap);
}
.sector-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  background: rgba(26,47,64,0.55);
  backdrop-filter: blur(4px);
  transition: transform var(--transition-base), border-color var(--transition-base), background var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.sector-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent-blue);
  background: rgba(26,47,64,0.75);
}
.sector-card__icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  color: var(--color-accent-gold);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: rgba(212,175,55,0.06);
}
.sector-card__icon svg { width: 24px; height: 24px; }
.sector-card__title { font-size: var(--text-base); font-weight: 700; }
.sector-card p { color: var(--color-text-secondary); font-size: var(--text-sm); }

/* ---------- 9. Companies ---------- */
.section--companies { background: var(--color-background); }
.companies-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--grid-gap);
}
.company-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  background: linear-gradient(180deg, rgba(26,47,64,0.5), rgba(15,30,42,0.6));
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: transform var(--transition-base), border-color var(--transition-base);
}
.company-card:hover { transform: translateY(-3px); border-color: var(--color-border-strong); }
.company-card__head {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}
.company-card__logo {
  width: 48px;
  height: 48px;
  flex: 0 0 48px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: var(--text-sm);
  color: var(--color-background);
  background: var(--color-accent-gold);
  letter-spacing: 0.05em;
  overflow: hidden;
}
.company-card__logo--img {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--color-border-strong);
  padding: var(--space-1);
}
.company-card__logo--img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.company-card__photo {
  margin: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: rgba(15,30,42,0.5);
}
.company-card__photo img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.company-card:hover .company-card__photo img { transform: scale(1.02); }
.company-card__name {
  font-size: var(--text-sm);
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1.2;
}
.company-card__spec {
  font-size: var(--text-xs);
  color: var(--color-accent-blue);
  margin-top: 2px;
}
.company-card__desc { font-size: var(--text-sm); color: var(--color-text-secondary); }
.company-card__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: auto;
}
.company-card__list li {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  padding-left: var(--space-4);
  position: relative;
}
.company-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 10px;
  height: 1px;
  background: var(--color-accent-gold);
}

/* ---------- 10. Contact ---------- */
.section--contact { isolation: isolate; overflow: hidden; }
.contact__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.contact__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.5) brightness(0.25);
}
.section--contact::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, var(--color-background) 0%, rgba(15,30,42,0.82) 55%, var(--color-background) 100%);
}
.contact-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: var(--space-8);
  align-items: start;
}

.contact-card {
  border: 1px solid var(--color-accent-gold);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  background: rgba(212,175,55,0.06);
  margin-bottom: var(--space-6);
}
.contact-card__name { font-weight: 800; font-size: var(--text-lg); }
.contact-card__role { font-size: var(--text-sm); color: var(--color-text-secondary); margin-top: var(--space-1); }

.contact-list { display: flex; flex-direction: column; gap: var(--space-3); }
.contact-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  background: rgba(26,47,64,0.5);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}
.contact-link:hover { border-color: var(--color-accent-gold); color: var(--color-accent-gold); }
.contact-link__icon { width: 20px; height: 20px; flex: 0 0 20px; }
.contact-link__icon svg { width: 100%; height: 100%; }
.contact-link--wa:hover { border-color: #25D366; color: #25D366; }
.contact-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}
.contact-meta svg { width: 20px; height: 20px; flex: 0 0 20px; }
.contact-note {
  margin-top: var(--space-6);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  border-left: 2px solid var(--color-accent-blue);
  padding-left: var(--space-3);
}

.contact-form-wrap {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(var(--space-6), 4vw, var(--space-8));
  background: rgba(26,47,64,0.6);
  backdrop-filter: blur(6px);
}
.contact-form { display: grid; gap: var(--space-5); }
.field { display: grid; gap: var(--space-2); }
.field label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
}
.required { color: var(--color-accent-gold); }
.field input,
.field textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  background: rgba(15,30,42,0.7);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-accent-gold);
  box-shadow: 0 0 0 3px rgba(212,175,55,0.18);
}
.field--honeypot { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }
.field.has-error input,
.field.has-error textarea { border-color: var(--color-danger); }
.field__error {
  min-height: 1.1em;
  font-size: var(--text-xs);
  color: var(--color-danger);
}
.form-actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-4); }
.form-status {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  min-height: 1.2em;
}
.form-status[data-state="error"] { color: var(--color-danger); }
.form-status[data-state="info"] { color: var(--color-accent-blue); }

/* ---------- FAB brand logo ---------- */
.brand-fab {
  position: fixed;
  right: var(--space-5);
  bottom: var(--space-5);
  z-index: 90;
  width: 84px;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: rgba(15,30,42,0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  display: block;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.brand-fab img {
  width: 100%;
  height: auto;
  object-fit: contain;
}
.brand-fab:hover { transform: translateY(-2px); }
@media (max-width: 640px) {
  .brand-fab { width: 64px; right: var(--space-4); bottom: var(--space-4); }
}

/* ---------- 11. Footer ---------- */
.site-footer {
  background: #0A161F;
  border-top: 1px solid var(--color-border);
  padding: var(--space-16) 0 var(--space-6);
}
.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-8);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid var(--color-border);
}
.footer__name { font-weight: 800; letter-spacing: 0.08em; font-size: var(--text-sm); color: var(--color-accent-gold); margin-bottom: var(--space-3); }
.footer__desc { font-size: var(--text-sm); color: var(--color-text-secondary); max-width: 46ch; }
.footer__nav { display: flex; flex-direction: column; gap: var(--space-2); }
.footer__nav a { font-size: var(--text-sm); color: var(--color-text-secondary); transition: color var(--transition-fast); }
.footer__nav a:hover { color: var(--color-text-primary); }
.footer__contact { display: flex; flex-direction: column; gap: var(--space-2); font-size: var(--text-sm); color: var(--color-text-secondary); }
.footer__contact a { color: var(--color-text-secondary); transition: color var(--transition-fast); }
.footer__contact a:hover { color: var(--color-accent-gold); }
.footer__bottom { padding-top: var(--space-6); }
.footer__bottom p { font-size: var(--text-xs); color: var(--color-text-secondary); }

/* ---------- 12. Responsive ---------- */
@media (max-width: 1100px) {
  .sectors-grid { grid-template-columns: repeat(3, 1fr); }
  .companies-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .alliance-pillars { grid-template-columns: 1fr; }
}

@media (max-width: 959px) {
  .menu-toggle { display: flex; }
  .site-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-6);
    background: rgba(15,30,42,0.98);
    backdrop-filter: blur(12px);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    opacity: 0;
    pointer-events: none;
  }
  .site-nav.is-open {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
  }
  .site-nav__list { flex-direction: column; align-items: flex-start; gap: var(--space-2); }
  .site-nav__list a { font-size: var(--text-lg); padding: var(--space-3) 0; }
  .btn--nav { align-self: flex-start; margin-top: var(--space-4); }
  body.menu-open { overflow: hidden; }

  .sectors-grid { grid-template-columns: repeat(2, 1fr); }
  .diagram__stage {
    height: auto;
    min-height: 420px;
    padding: var(--space-6);
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    gap: var(--space-4);
    position: relative;
  }
  .diagram__lines { display: none; }
  .diagram__node {
    position: static;
    transform: none;
    left: auto;
    top: auto;
    width: 100% !important;
    max-width: 420px;
    margin: 0 auto;
  }
  .diagram__node--center {
    order: 0;
    border-radius: var(--radius-md);
    width: 100% !important;
    height: auto !important;
  }
  .diagram__node--partner { order: 1; }
  .diagram__node--partner.is-active { transform: none; }
  .diagram__node--partner:hover { transform: none; }
  .footer__inner { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .hero__title { font-size: clamp(1.9rem, 8vw, 2.6rem); }
  .sectors-grid { grid-template-columns: 1fr; }
  .companies-grid { grid-template-columns: 1fr; }
  .steps { gap: var(--space-3); }
  .step { grid-template-columns: 48px 1fr; padding: var(--space-4); gap: var(--space-3); }
  .step__marker { width: 44px; height: 44px; }
  .partner-chip { font-size: var(--text-xs); padding: 0.4rem 0.85rem; }
  .hero__partners-inner { justify-content: flex-start; }
}

@media (max-width: 480px) {
  .contact-grid { gap: var(--space-5); }
  .contact-form-wrap { padding: var(--space-5); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .diagram__lines line { stroke-dasharray: none; }
}

/* ---------- 13. Accessibility & focus ---------- */
@media (prefers-contrast: more) {
  :root {
    --color-border: rgba(255,255,255,0.4);
    --color-text-secondary: #D7E2E8;
  }
}