:root {
  --text-xs: clamp(.75rem, .7rem + .25vw, .875rem);
  --text-sm: clamp(.875rem, .8rem + .35vw, 1rem);
  --text-base: clamp(1rem, .95rem + .25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + .75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2.25rem, 1.4rem + 3vw, 4rem);
  --text-3xl: clamp(3rem, 1.4rem + 5vw, 6rem);
  --space-2: .5rem;
  --space-3: .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;

  --color-bg: #f5f5f4;
  --color-surface: #ffffff;
  --color-surface-2: #e7e5e4;
  --color-border: #d6d3d1;
  --color-divider: #e7e5e4;
  --color-text: #0c0a09;
  --color-text-muted: #44403c;
  --color-text-faint: #78716c;
  --color-text-inverse: #fafaf9;

  --color-primary: #0c0a09;
  --color-primary-strong: #000000;
  --color-accent: #f5c518;
  --color-accent-dark: #c79a00;
  --color-accent-soft: #fef3c7;

  /* Logo star colors — sampled from the SEYESA brand mark */
  --color-red: #b33133;
  --color-red-dark: #8f2628;
  --color-blue: #436aa3;
  --color-blue-dark: #35547f;
  --tricolor: linear-gradient(90deg,
    var(--color-accent) 0 33.4%,
    var(--color-red) 33.4% 66.7%,
    var(--color-blue) 66.7% 100%);

  --radius-sm: .25rem;
  --radius-md: .5rem;
  --radius-lg: .625rem;
  --radius-xl: .75rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(12,10,9,.06);
  --shadow-md: 0 8px 24px rgba(12,10,9,.10);
  --shadow-lg: 0 20px 48px rgba(12,10,9,.16);

  --font-body: 'Satoshi','Inter',sans-serif;
  --font-display: 'Bebas Neue','Industry','Oswald','Arial Black',sans-serif;
  --content: 1240px;
}

*, *:before, *:after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img, svg { display: block; max-width: 100%; height: auto; }
button { font: inherit; border: 0; background: none; color: inherit; cursor: pointer; }

.container { width: min(calc(100% - 2rem), var(--content)); margin: auto; }

.skip-link { position: absolute; left: -9999px; }
.skip-link:focus {
  left: 1rem; top: 1rem;
  background: var(--color-primary); color: var(--color-text-inverse);
  padding: .75rem 1rem; border-radius: var(--radius-md); z-index: 100;
}

/* ── HEADER ─────────────────────────────────────────────────── */
.header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(245,245,244,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}
.nav, .controls, .hero-actions, .kpis, .services, .gallery, .proof, .contact, .footer-grid {
  display: flex;
}
.nav {
  justify-content: space-between; align-items: center;
  gap: 1rem; padding: .85rem 0; flex-wrap: wrap;
}
.brand {
  display: flex; align-items: center; gap: .65rem;
  font-weight: 800; letter-spacing: .02em;
}
.brand__logo {
  width: auto; height: 88px; max-width: 240px;
  border-radius: var(--radius-sm);
  object-fit: contain;
  background: #ffffff;
  border: 1px solid var(--color-border);
  display: block;
}
@media (max-width: 600px) {
  .brand__logo { height: 64px; max-width: 200px; }
}

.links { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.links a {
  font-size: var(--text-sm); color: var(--color-text);
  font-weight: 600; letter-spacing: .01em;
  position: relative; padding-bottom: 2px;
}
.links a:hover { color: var(--color-accent-dark); }
.links a:hover::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--color-accent);
}

.controls { gap: .5rem; }
.toggle, .cta {
  min-height: 42px; padding: .65rem 1.1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-text);
  background: transparent; color: var(--color-text);
  font-weight: 700; letter-spacing: .04em;
  font-size: var(--text-sm);
  text-transform: uppercase;
  transition: background .12s, color .12s;
}
.toggle:hover, .cta:hover { background: var(--color-text); color: var(--color-text-inverse); }

/* ── HERO ───────────────────────────────────────────────────── */
.hero {
  padding: 5rem 0 4rem;
  background:
    linear-gradient(180deg, transparent 0%, rgba(245,197,24,.06) 100%),
    repeating-linear-gradient(90deg, transparent 0 79px, rgba(12,10,9,.04) 79px 80px);
  border-bottom: 1px solid var(--color-border);
}
.hero-grid, .about, .research-grid {
  display: grid; grid-template-columns: 1.25fr .75fr; gap: 3rem; align-items: start;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .4rem .8rem;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.eyebrow::before {
  content: ""; width: 8px; height: 8px; background: var(--color-primary);
  border-radius: 1px;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  line-height: .88;
  letter-spacing: .01em;
  text-transform: uppercase;
  max-width: 14ch;
  margin-top: 1.25rem;
}
.hero h1 .accent { color: var(--color-blue); }
.hero p {
  margin-top: 1.25rem; max-width: 58ch;
  color: var(--color-text-muted);
  font-size: var(--text-base);
}
.hero-actions { gap: .75rem; flex-wrap: wrap; margin-top: 1.75rem; }
.cta-primary {
  background: var(--color-primary); color: var(--color-text-inverse);
  border: 1px solid var(--color-primary);
}
.cta-primary:hover {
  background: var(--color-accent); color: var(--color-primary);
  border-color: var(--color-accent);
}

.hero-panel, .card, .contact-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}
.hero-panel {
  border-top: 4px solid transparent;
  border-image: var(--tricolor) 1;
}
.hero-panel h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  line-height: 1;
  letter-spacing: .02em;
  text-transform: uppercase;
  margin-top: 1rem;
}

/* ── KPI STRIP ──────────────────────────────────────────────── */
.kpis { gap: 0; flex-wrap: wrap; margin-top: 2.5rem; border-top: 3px solid transparent; border-image: var(--tricolor) 1; }
.kpi {
  flex: 1 1 180px; padding: 1.25rem 1rem 0 0;
  border-right: 1px solid var(--color-border);
}
.kpi:last-child { border-right: 0; }
.kpi strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  line-height: 1; letter-spacing: .01em;
  color: var(--color-primary);
}
.kpi span { font-size: var(--text-sm); color: var(--color-text-muted); }

/* ── SECTIONS ───────────────────────────────────────────────── */
section { padding: 5rem 0; }
.section-head {
  display: grid; grid-template-columns: .9fr 1.1fr; gap: 3rem; margin-bottom: 3rem;
  align-items: end;
}
.section-head h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  line-height: .95;
  text-transform: uppercase;
  letter-spacing: .015em;
}
.section-head h2::after {
  content: "";
  display: block;
  width: 84px; height: 6px;
  margin-top: .75rem;
  background: var(--tricolor);
}
.section-head p, .card p, .contact-panel p { color: var(--color-text-muted); }

.services, .gallery, .proof, .contact { gap: 1rem; flex-wrap: wrap; }
.card { flex: 1 1 280px; transition: border-color .15s, transform .15s; }
.card:hover { border-color: var(--color-primary); transform: translateY(-2px); }

.service-icon {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  background: var(--color-accent);
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
  color: var(--color-primary);
}
.service-icon svg { width: 28px; height: 28px; stroke: currentColor; stroke-width: 2; fill: none; stroke-linecap: round; stroke-linejoin: round; }

/* Cycle the three logo-star colors through the service cards */
.services .card:nth-child(3n+2) .service-icon { background: var(--color-red); color: #ffffff; }
.services .card:nth-child(3n) .service-icon { background: var(--color-blue); color: #ffffff; }
.services .card:nth-child(3n+2) .num { color: var(--color-red); }
.services .card:nth-child(3n) .num { color: var(--color-blue); }

.num {
  font-size: var(--text-xs);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  margin-bottom: .85rem;
  font-weight: 800;
}
.card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  letter-spacing: .02em;
  text-transform: uppercase;
  margin-bottom: .65rem;
}

/* ── GALLERY ────────────────────────────────────────────────── */
.gallery-item {
  min-height: 280px;
  display: flex; flex-direction: column;
  padding: 0; overflow: hidden;
}
.gallery-item > .placeholder { margin-bottom: 0; }
.gallery-video {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #1c1917;
  border-bottom: 4px solid var(--color-accent);
}
.gallery .gallery-item:nth-child(2) .gallery-video { border-bottom-color: var(--color-red); }
.gallery .gallery-item:nth-child(3) .gallery-video { border-bottom-color: var(--color-blue); }
.gallery-item > h3, .gallery-item > p { padding: 0 1.5rem; }
.gallery-item > h3 { padding-top: 1.25rem; }
.gallery-item > p { padding-bottom: 1.5rem; }

.placeholder {
  aspect-ratio: 4/3;
  border-radius: 0;
  background-color: #1c1917;
  background-image:
    linear-gradient(135deg, rgba(245,197,24,.08) 0%, transparent 60%),
    repeating-linear-gradient(45deg, rgba(245,197,24,.06) 0 12px, transparent 12px 24px),
    repeating-linear-gradient(-45deg, rgba(255,255,255,.03) 0 12px, transparent 12px 24px);
  display: grid; place-items: center;
  color: var(--color-accent);
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: .18em;
  text-transform: uppercase;
  text-align: center; padding: 1rem;
  border-bottom: 4px solid var(--color-accent);
  position: relative;
}
.placeholder::before, .placeholder::after {
  content: ""; position: absolute;
  border: 1px solid rgba(245,197,24,.45);
  width: 22px; height: 22px;
}
.placeholder::before { top: 12px; left: 12px; border-right: 0; border-bottom: 0; }
.placeholder::after { bottom: 12px; right: 12px; border-left: 0; border-top: 0; }

/* ── LISTS ──────────────────────────────────────────────────── */
ul.clean { display: grid; gap: .65rem; margin-top: 1rem; padding-left: 0; list-style: none; }
ul.clean li {
  position: relative; padding-left: 1.5rem;
  color: var(--color-text-muted);
}
ul.clean li::before {
  content: ""; position: absolute; left: 0; top: .55em;
  width: .75rem; height: 2px; background: var(--color-accent);
}

/* ── CONTACT ────────────────────────────────────────────────── */
.contact-panel {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-primary);
  border-top: 4px solid transparent;
  border-image: var(--tricolor) 1;
}
.contact-panel p, .contact-panel small { color: rgba(250,250,249,.82); }
.contact-panel strong { color: var(--color-accent); }
.contact-panel a { color: var(--color-accent); text-decoration: underline; }
.contact-panel h3 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: .02em;
}

/* ── FOOTER ─────────────────────────────────────────────────── */
.footer {
  padding: 2.5rem 0;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-top: 4px solid transparent;
  border-image: var(--tricolor) 1;
}
.footer-grid { justify-content: space-between; gap: 1rem; flex-wrap: wrap; align-items: center; }
.footer-grid strong {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  letter-spacing: .04em;
  text-transform: uppercase;
}
.footer__copy { font-size: var(--text-sm); color: rgba(250,250,249,.7); }
.footer__copy a { color: var(--color-accent); text-decoration: underline; }
.small { font-size: var(--text-sm); color: var(--color-text-faint); margin-top: 1rem; }

/* ── SECTORS (Experiencia sectorial) ────────────────────────── */
.sectors {
  background:
    linear-gradient(135deg, rgba(179,49,51,.10) 0%, transparent 45%),
    linear-gradient(315deg, rgba(67,106,163,.10) 0%, transparent 45%),
    #1c1917;
  color: var(--color-text-inverse);
}
.sectors .section-head p { color: rgba(250,250,249,.75); }
.sector-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
  padding: 0;
}
.sector {
  display: flex; align-items: center; gap: .95rem;
  padding: 1rem 1.25rem;
  background: rgba(255,255,255,.045);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: var(--radius-lg);
  font-weight: 600;
  letter-spacing: .01em;
  transition: border-color .15s, transform .15s;
}
.sector:hover { border-color: var(--color-accent); transform: translateY(-2px); }
.sector-icon {
  flex: 0 0 46px;
  width: 46px; height: 46px;
  border-radius: var(--radius-full);
  background: var(--color-red);
  display: grid; place-items: center;
}
.sector-icon svg {
  width: 23px; height: 23px;
  stroke: #ffffff; stroke-width: 1.8; fill: none;
  stroke-linecap: round; stroke-linejoin: round;
}

/* ── WHATSAPP FAB ───────────────────────────────────────────── */
.whatsapp-fab {
  position: fixed;
  right: 1.25rem; bottom: 1.25rem;
  z-index: 50;
  width: 58px; height: 58px;
  border-radius: var(--radius-full);
  background: #25d366;
  color: #ffffff;
  display: grid; place-items: center;
  box-shadow: var(--shadow-lg);
  transition: transform .15s, box-shadow .15s;
}
.whatsapp-fab:hover { transform: scale(1.08); }
.whatsapp-fab svg { width: 32px; height: 32px; fill: currentColor; }

/* ── LANG ───────────────────────────────────────────────────── */
[data-lang] { display: none; }
html[lang-mode="es"] [data-lang="es"],
html[lang-mode="en"] [data-lang="en"] { display: initial; }

/* ── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero-grid, .about, .research-grid, .section-head { grid-template-columns: 1fr; gap: 2rem; }
  .nav { align-items: flex-start; }
  .hero { padding: 3rem 0 2.5rem; }
  section { padding: 3.5rem 0; }
}