/* =================================================================
   Tritemius Emerging Technologies — Stylesheet
   Comparte tokens y componentes con la home (header, lang-switch,
   nav-toggle, footer-credentials, regulatory-notice, legal-modal,
   theme-toggle) para preservar identidad visual unificada.
   ================================================================= */

:root {
  --bg: #1F2A52;
  --bg-deep: #182143;
  --surface: #313E6A;
  --surface-2: #28335C;
  --primary: #3199FA;
  --accent: #39D6F3;
  --text-1: #FFFFFF;
  --text-2: #E8ECF5;
  --text-3: #8A95B5;
  --gradient: linear-gradient(135deg, #3098F9 0%, #2F3B80 100%);
  --hairline: rgba(232, 236, 245, 0.08);
  --hairline-strong: rgba(232, 236, 245, 0.18);
  --footer-bg: #182143;
  --header-bg: rgba(31, 42, 82, 0.72);
}

[data-theme="light"] {
  --bg: #FFFFFF;
  --bg-deep: #F4F7FC;
  --surface: #F4F7FC;
  --surface-2: #E8F1FF;
  --primary: #0061DB;
  --accent: #0061DB;
  --text-1: #353D67;
  --text-2: #303D69;
  --text-3: #7F7F7F;
  --gradient: linear-gradient(135deg, #BFD9FF 0%, #D8C8F5 100%);
  --hairline: rgba(53, 61, 103, 0.08);
  --hairline-strong: rgba(53, 61, 103, 0.18);
  --footer-bg: #F4F7FC;
  --header-bg: rgba(255, 255, 255, 0.82);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  /* Reserva el espacio del scrollbar siempre, para que abrir el menú mobile
     (body.nav-open => overflow: hidden) no ensanche el viewport ni desplace
     el .nav-toggle en el eje X al alternar hamburguesa <-> X. */
  scrollbar-gutter: stable;
}

body {
  background: var(--bg);
  color: var(--text-2);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background 0.4s ease, color 0.4s ease;
}

::selection { background: var(--primary); color: #FFFFFF; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: 'Barlow', sans-serif;
  color: var(--text-1);
  letter-spacing: -0.01em;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* =================================================================
   HEADER
   ================================================================= */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.5rem 4rem;
  background: var(--header-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: padding 0.3s ease, background 0.4s ease;
}

.header.scrolled { padding: 0.875rem 4rem; }

.logo {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  color: var(--text-1);
}

.logo .iso {
  width: 2.375rem;
  height: 2.375rem;
  flex-shrink: 0;
}

.logo .word {
  height: 1.375rem;
  width: auto;
  display: block;
  transition: filter 0.4s ease;
}

[data-theme="light"] .logo .word {
  filter: invert(1) brightness(0.2);
}

.logo-dept {
  font-family: 'Barlow', sans-serif;
  font-weight: 300;
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  padding-left: 0.875rem;
  margin-left: 0.875rem;
  border-left: 1px solid var(--hairline-strong);
  line-height: 1;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.75rem;
  flex: 1;
  margin: 0 2rem;
}

.nav a {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  color: var(--text-2);
  position: relative;
  padding-bottom: 4px;
  text-align: center;
  line-height: 1.25;
  white-space: nowrap;
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.nav a:hover { color: var(--accent); }
.nav a:hover::after { width: 100%; }

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--text-3);
  letter-spacing: 0.08em;
  border: 1px solid var(--hairline-strong);
  border-radius: 100px;
  padding: 0.375rem 0.875rem;
  cursor: pointer;
  background: transparent;
  transition: all 0.3s ease;
}

.lang-switch:hover {
  color: var(--text-1);
  border-color: var(--text-1);
}

.lang-switch [data-lang-code] {
  opacity: 0.45;
  transition: opacity 0.25s ease, color 0.25s ease;
}

.lang-switch [data-lang-code].is-active {
  opacity: 1;
  color: var(--accent);
}

.lang-switch .lang-sep {
  opacity: 0.35;
  margin: 0 4px;
}

/* =================================================================
   HERO
   ================================================================= */
.hero {
  min-height: 100vh;
  padding: 12.5rem 4rem 8rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero-glow-1 {
  position: absolute;
  top: 20%;
  right: -5%;
  width: 56rem;
  height: 56rem;
  background: radial-gradient(circle, #3098F9 0%, transparent 65%);
  filter: blur(160px);
  opacity: 0.28;
  pointer-events: none;
  animation: float 18s ease-in-out infinite;
}

.hero-glow-2 {
  position: absolute;
  bottom: -10%;
  left: -15%;
  width: 44rem;
  height: 44rem;
  background: radial-gradient(circle, #39D6F3 0%, transparent 65%);
  filter: blur(140px);
  opacity: 0.18;
  pointer-events: none;
  animation: float 22s ease-in-out infinite reverse;
}

.hero-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

[data-theme="light"] .hero-dots {
  background-image: radial-gradient(rgba(53, 61, 103, 0.05) 1px, transparent 1px);
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-30px, 30px); }
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 82.5rem;
  margin: 0 auto;
  width: 100%;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  font-family: 'Barlow', sans-serif;
  font-weight: 300;
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp 0.9s 0.1s forwards;
}

.hero-eyebrow::before {
  content: '';
  width: 1.75rem;
  height: 1px;
  background: var(--accent);
  flex-shrink: 0;
}

.hero h1 {
  font-weight: 800;
  font-size: clamp(3.25rem, 7vw, 5.625rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--text-1);
  max-width: 68.75rem;
  margin-bottom: 2.25rem;
  opacity: 0;
  animation: fadeUp 0.9s 0.25s forwards;
}

.hero h1 .accent { color: var(--accent); }

.hero p.lead {
  font-size: 1.1875rem;
  color: var(--text-1);
  max-width: 37.5rem;
  line-height: 1.6;
  margin-bottom: 3.5rem;
  opacity: 0;
  animation: fadeUp 0.9s 0.45s forwards;
}

.cta-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.9s 0.6s forwards;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  padding: 1.0625rem 1.875rem;
  border-radius: 2px;
  cursor: pointer;
  border: none;
  transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.btn-primary {
  background: var(--primary);
  color: var(--text-1);
}

.btn-primary:hover {
  background: var(--accent);
  color: var(--bg);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(49, 153, 250, 0.28);
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}

.btn-secondary:hover {
  background: rgba(49, 153, 250, 0.08);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn .arrow {
  width: 0.875rem;
  height: 0.875rem;
  transition: transform 0.3s ease;
}

.btn:hover .arrow { transform: translateX(4px); }

.scroll-cue {
  position: absolute;
  bottom: 3.5rem;
  right: 4rem;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.625rem;
  color: var(--text-3);
  opacity: 0;
  animation: fadeUp 0.9s 1.1s forwards;
}

.scroll-cue-line {
  width: 1px;
  height: 2.375rem;
  background: linear-gradient(to bottom, transparent, var(--accent));
  animation: scrollPulse 2s ease-in-out infinite;
}

.scroll-cue-text {
  font-family: 'Barlow', sans-serif;
  font-weight: 300;
  font-size: 0.5625rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(0.6); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: translateY(0); }
}

/* =================================================================
   SECTIONS BASE
   ================================================================= */
section {
  padding: 8.75rem 4rem;
  position: relative;
}

.section-inner {
  max-width: 82.5rem;
  margin: 0 auto;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  font-family: 'Barlow', sans-serif;
  font-weight: 300;
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.75rem;
}

.eyebrow::before {
  content: '';
  width: 1.5rem;
  height: 1px;
  background: var(--accent);
  flex-shrink: 0;
}

.section-head {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 5rem;
  margin-bottom: 5rem;
  align-items: center;
}

.section-head h2 {
  font-weight: 700;
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  line-height: 1.07;
  letter-spacing: -0.02em;
}

.section-head .intro {
  font-size: 1.0625rem;
  color: var(--text-1);
  line-height: 1.65;
}

.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--hairline-strong), transparent);
}

/* =================================================================
   SERVICIOS
   ================================================================= */
#servicios { background: var(--bg); }

.servicios-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.srv-card {
  background: var(--surface);
  border-radius: 4px;
  border: 1px solid var(--hairline);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.35s ease, box-shadow 0.35s ease;
}

.srv-card:hover {
  border-color: rgba(49, 153, 250, 0.45);
  box-shadow: 0 0 32px rgba(49, 153, 250, 0.1), 0 8px 24px rgba(0, 0, 0, 0.2);
}

.srv-header {
  padding: 2.25rem 2.25rem 0;
  position: relative;
}

.srv-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(to right, var(--accent), var(--primary));
  opacity: 0;
  transition: opacity 0.35s ease;
}

.srv-card:hover .srv-header::before { opacity: 1; }

.srv-title {
  font-family: 'Barlow', sans-serif;
  font-weight: 700;
  font-size: 1.375rem;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--text-1);
  margin-bottom: 0.75rem;
}

.srv-intro {
  font-size: 0.8125rem;
  color: var(--text-2);
  line-height: 1.6;
}

.srv-expand-hint {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  margin-top: 0.5rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0.65;
  transition: opacity 0.3s ease;
}

.srv-card:hover .srv-expand-hint { opacity: 0; }

.srv-items {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.2, 0.8, 0.2, 1),
    opacity 0.4s ease,
    padding 0.4s ease;
  opacity: 0;
  padding: 0 2.25rem;
  display: flex;
  flex-direction: column;
}

.srv-card:hover .srv-items {
  max-height: 37.5rem;
  opacity: 1;
  padding: 0 2.25rem 1.75rem;
}

.srv-item {
  padding: 0.875rem 0;
  border-bottom: 1px solid var(--hairline);
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.srv-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.srv-item-title {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.01em;
  color: var(--accent);
}

.srv-item-desc {
  font-size: 0.75rem;
  color: var(--text-3);
  line-height: 1.6;
}

/* =================================================================
   ÁREAS DE EXPERTISE (interactive panels)
   ================================================================= */
#expertise { background: var(--bg-deep); }

.esp-interactive {
  display: grid;
  grid-template-columns: 20rem 1fr;
  border: 1px solid var(--hairline);
  border-radius: 4px;
  overflow: hidden;
}

.esp-nav {
  border-right: 1px solid var(--hairline);
  display: flex;
  flex-direction: column;
}

.esp-nav-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.75rem;
  border-bottom: 1px solid var(--hairline);
  cursor: pointer;
  transition: background 0.25s ease;
  position: relative;
  background: transparent;
  border-left: none;
  border-right: none;
  border-top: none;
  width: 100%;
  text-align: left;
  font: inherit;
  color: inherit;
}

.esp-nav-item:last-child { border-bottom: none; }

.esp-nav-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.esp-nav-item:hover { background: rgba(255, 255, 255, 0.03); }
[data-theme="light"] .esp-nav-item:hover { background: rgba(0, 97, 219, 0.04); }

.esp-nav-item.is-active { background: var(--surface); }
.esp-nav-item.is-active::before { opacity: 1; }

.esp-nav-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  border: 1px solid var(--hairline-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-3);
  flex-shrink: 0;
  transition: border-color 0.25s ease, color 0.25s ease;
}

.esp-nav-item.is-active .esp-nav-icon,
.esp-nav-item:hover .esp-nav-icon {
  border-color: var(--accent);
  color: var(--accent);
}

.esp-nav-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.esp-nav-num {
  font-family: 'Barlow', sans-serif;
  font-weight: 300;
  font-size: 0.625rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-3);
  transition: color 0.25s ease;
}

.esp-nav-item.is-active .esp-nav-num { color: var(--accent); }

.esp-nav-label {
  font-family: 'Barlow', sans-serif;
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--text-2);
  line-height: 1.2;
  transition: color 0.25s ease;
}

.esp-nav-item.is-active .esp-nav-label,
.esp-nav-item:hover .esp-nav-label { color: var(--text-1); }

.esp-nav-arrow {
  color: var(--text-3);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.esp-nav-item.is-active .esp-nav-arrow,
.esp-nav-item:hover .esp-nav-arrow {
  opacity: 1;
  color: var(--accent);
}

.esp-detail { background: var(--surface); }

.esp-panel {
  display: none;
  padding: 3rem 3.25rem;
  flex-direction: column;
}

.esp-panel.is-active { display: flex; }

.esp-panel-title {
  font-family: 'Barlow', sans-serif;
  font-weight: 700;
  font-size: 1.75rem;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--text-1);
  margin-bottom: 1rem;
}

.esp-panel-intro {
  font-size: 0.875rem;
  color: var(--text-1);
  line-height: 1.7;
  padding-bottom: 0.875rem;
  border-bottom: 1px solid var(--hairline);
}

.esp-blocks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 0.25rem;
}

.esp-block {
  padding: 1.25rem 1.5rem;
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.esp-block:nth-child(even) { border-right: none; }
.esp-block:nth-last-child(-n+2) { border-bottom: none; }

.esp-block:last-child:nth-child(odd) {
  grid-column: 1 / -1;
  border-right: none;
}

.esp-block-title {
  font-family: 'Barlow', sans-serif;
  font-weight: 700;
  font-size: 0.8125rem;
  color: var(--text-1);
  letter-spacing: 0.01em;
  margin-bottom: 0.375rem;
}

.esp-block-desc {
  font-size: 0.75rem;
  color: var(--text-3);
  line-height: 1.65;
}

/* =================================================================
   SECTORES
   ================================================================= */
#sectores { background: var(--bg-deep); }

.sectores-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.sector-card {
  border-radius: 4px;
  overflow: hidden;
  position: relative;
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.875rem;
  min-height: 11.25rem;
  background: var(--surface);
  border: 1px solid var(--hairline);
  transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1), border-color 0.35s ease;
}

.sector-card:hover {
  transform: translateY(-4px);
  border-color: rgba(49, 153, 250, 0.55);
  box-shadow: 0 0 40px rgba(49, 153, 250, 0.22), 0 8px 32px rgba(0, 0, 0, 0.3);
}

.sector-card .sc-bg {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.sector-card:hover .sc-bg { opacity: 1; }

.sector-card .sc-icon {
  position: relative;
  z-index: 2;
  color: rgba(255, 255, 255, 0.55);
  transition: color 0.35s ease;
  flex-shrink: 0;
}

[data-theme="light"] .sector-card .sc-icon { color: rgba(53, 61, 103, 0.6); }

.sector-card:hover .sc-icon { color: rgba(255, 255, 255, 0.85); }
[data-theme="light"] .sector-card:hover .sc-icon { color: var(--text-1); }

.sector-card .sc-info {
  position: relative;
  z-index: 2;
}

.sector-title {
  font-family: 'Barlow', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-1);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

/* =================================================================
   CLIENTES (marquee carrusel)
   ================================================================= */
#clientes {
  background: var(--bg-deep);
  overflow: hidden;
}

.clients-track-wrap {
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
}

.clients-track {
  display: flex;
  gap: 4rem;
  align-items: center;
  width: max-content;
  animation: marquee 28s linear infinite;
}

.clients-track:hover { animation-play-state: paused; }

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.client-logo {
  flex-shrink: 0;
  height: 5.25rem;
  width: auto;
  max-width: 16.25rem;
  object-fit: contain;
  background: #FFFFFF;
  border-radius: 8px;
  padding: 0.625rem 1.25rem;
}

/* =================================================================
   FOOTER (compartido con la home)
   ================================================================= */
footer {
  padding: 6rem 4rem 1.5rem;
  background: var(--footer-bg);
  border-top: 1px solid var(--hairline);
  transition: background 0.4s ease;
}

.footer-inner {
  max-width: 82.5rem;
  margin: 0 auto;
}

.footer-top {
  display: block;
  margin-bottom: 4rem;
  padding-bottom: 3rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: flex-start;
}

.footer-col h5 {
  font-family: 'Barlow', sans-serif;
  font-weight: 300;
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.footer-col--business ul,
.footer-col--legal ul {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 0.875rem 2rem;
}

.footer-col li a {
  font-size: 0.8125rem;
  color: var(--text-2);
  transition: color 0.2s ease;
}

.footer-col li a:hover { color: var(--accent); }

.footer-col li a.legal-trigger { cursor: pointer; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-3);
  letter-spacing: 0.04em;
}

.footer-bottom .social { display: flex; gap: 1.5rem; }

.footer-bottom .social a {
  color: var(--text-3);
  transition: color 0.2s ease;
}

.footer-bottom .social a:hover { color: var(--accent); }

.regulatory-notice {
  margin-top: 2rem;
  padding: 1.5rem 0 0;
  border-top: 1px solid var(--hairline);
  font-size: 0.75rem;
  color: var(--text-3);
  font-style: italic;
  line-height: 1.65;
}

/* FOOTER · CREDENCIALES (financiación + certificaciones) */
.footer-credentials {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--hairline);
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}

.credentials-col {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  min-width: 0;
}

.credentials-eyebrow {
  font-family: 'Inter', sans-serif;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 700;
}

.credentials-logos {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  background: #FFFFFF;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 2px;
  padding: 0.625rem 0.875rem;
  align-self: flex-start;
  max-width: 100%;
  gap: 1.25rem;
}

.credentials-logo {
  width: auto;
  display: block;
  flex-shrink: 0;
  object-fit: contain;
}

.credentials-logo--ue { height: 2.75rem; }
.credentials-logo--fe { height: 2.25rem; }
.credentials-logo--cam { height: 2.5rem; }

.credentials-logo--iso {
  width: 7rem;
  height: 7rem;
  object-fit: contain;
}

.credentials-statement {
  font-family: 'Inter', sans-serif;
  font-size: 0.8125rem;
  color: var(--text-3);
  line-height: 1.55;
  margin: 0;
}

.credentials-meta {
  font-family: 'Inter', sans-serif;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 700;
  margin: 0;
}

/* =================================================================
   MODAL LEGAL
   ================================================================= */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 22, 48, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
}

[data-theme="light"] .modal-backdrop { background: rgba(53, 61, 103, 0.45); }

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.legal-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, calc(-50% + 24px));
  z-index: 201;
  background: var(--surface);
  width: min(45rem, calc(100vw - 3rem));
  max-height: calc(100vh - 3rem);
  overflow-y: auto;
  border: 1px solid var(--hairline-strong);
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.45s cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 0.45s cubic-bezier(0.2, 0.8, 0.2, 1);
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.4);
  padding: 3rem 3.25rem 3.25rem;
}

[data-theme="light"] .legal-modal {
  background: #FFFFFF;
  box-shadow: 0 40px 80px rgba(53, 61, 103, 0.2);
}

.legal-modal.open {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%);
}

.legal-modal .modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 100px;
  background: rgba(232, 236, 245, 0.08);
  border: 1px solid var(--hairline-strong);
  color: var(--text-1);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.legal-modal .modal-close:hover {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

.legal-modal h3 {
  font-family: 'Barlow', sans-serif;
  font-weight: 700;
  font-size: 1.75rem;
  line-height: 1.15;
  color: var(--text-1);
  margin-bottom: 0.5rem;
  letter-spacing: -0.015em;
}

.legal-modal .eyebrow { margin-bottom: 1rem; }

.legal-modal .legal-body {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.75;
  margin-top: 1.25rem;
}

.legal-modal .legal-body p + p { margin-top: 0.875rem; }

/* =================================================================
   THEME TOGGLE
   ================================================================= */
.theme-toggle {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 90;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  background: var(--header-bg);
  border: 1px solid var(--hairline-strong);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: var(--text-1);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1),
    background 0.4s ease,
    border-color 0.4s ease,
    color 0.4s ease;
}

.theme-toggle:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  color: var(--accent);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.theme-toggle svg {
  width: 1.25rem;
  height: 1.25rem;
  transition: opacity 0.3s ease, transform 0.3s ease;
  position: absolute;
}

.theme-toggle .icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.theme-toggle .icon-moon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.6);
}

[data-theme="light"] .theme-toggle .icon-sun {
  opacity: 0;
  transform: rotate(90deg) scale(0.6);
}

[data-theme="light"] .theme-toggle .icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* =================================================================
   MOBILE NAV TOGGLE (hamburguesa)
   ================================================================= */
.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  background: transparent;
  border: 1px solid var(--hairline-strong);
  border-radius: 100px;
  cursor: pointer;
  position: relative;
  padding: 0;
  align-items: center;
  justify-content: center;
  transition: border-color 0.25s ease, background 0.25s ease;
  z-index: 101;
}

.nav-toggle:hover { border-color: var(--accent); }

.nav-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.nav-toggle-bar {
  display: block;
  width: 1.125rem;
  height: 1.5px;
  background: var(--text-1);
  border-radius: 1px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1),
    opacity 0.2s ease,
    top 0.3s cubic-bezier(0.2, 0.8, 0.2, 1),
    background 0.4s ease;
}

.nav-toggle-bar:nth-child(1) { top: 0.9375rem; }
.nav-toggle-bar:nth-child(2) { top: 1.3125rem; }
.nav-toggle-bar:nth-child(3) { top: 1.6875rem; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  top: 1.3125rem;
  transform: translateX(-50%) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
  transform: translateX(-50%) scaleX(0);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  top: 1.3125rem;
  transform: translateX(-50%) rotate(-45deg);
}

body.nav-open { overflow: hidden; }

/* =================================================================
   REVEAL ANIMATIONS
   ================================================================= */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* =================================================================
   RESPONSIVE
   ================================================================= */

/* Tablet (≤1024px) */
@media (max-width: 1024px) {
  .header { padding: 1.125rem 2rem; }
  .header.scrolled { padding: 0.75rem 2rem; }

  section { padding: 6rem 2rem; }
  footer { padding: 4.5rem 2rem 2rem; }

  .hero { padding: 10rem 2rem 6rem; min-height: auto; }
  .scroll-cue { right: 2rem; }

  .section-head {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    margin-bottom: 3.5rem;
  }

  .servicios-grid { grid-template-columns: 1fr; }

  .esp-interactive { grid-template-columns: 16.25rem 1fr; }

  .sectores-grid { grid-template-columns: repeat(2, 1fr); }

  .footer-credentials {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  /* Mostrar hamburger y convertir nav en overlay */
  .nav-toggle { display: inline-flex; }

  .nav {
    display: flex;
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    background: var(--bg);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.75rem;
    padding: 6rem 2rem 4rem;
    margin: 0;
    flex: none;
    z-index: 99;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: none;
    overflow-y: auto;
  }

  body.nav-ready .nav {
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1),
      opacity 0.3s ease,
      visibility 0s linear 0.4s;
  }

  .nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  body.nav-ready .nav.is-open {
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1),
      opacity 0.3s ease,
      visibility 0s linear 0s;
  }

  .nav a {
    font-size: 1.375rem;
    color: var(--text-1);
    padding: 0.5rem 0;
  }

  .nav .lang-switch { margin-top: 1rem; }
}

/* Mobile (≤768px) */
@media (max-width: 768px) {
  section { padding: 5rem 1.25rem; }
  footer { padding: 3.5rem 1.25rem 2rem; }

  .hero { padding: 8.75rem 1.25rem 5rem; }
  .hero p.lead { font-size: 1rem; margin-bottom: 2.5rem; }
  .scroll-cue { display: none; }
  .cta-row { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }

  .section-head { gap: 1rem; margin-bottom: 2.5rem; }

  .servicios-grid { gap: 1rem; }

  /* En móvil los subservicios siempre visibles */
  .srv-items {
    max-height: none;
    opacity: 1;
    padding: 0 1.5rem 1.5rem;
  }

  .srv-expand-hint { display: none; }
  .srv-header { padding: 1.5rem 1.5rem 0; }

  .esp-interactive { grid-template-columns: 1fr; }

  .esp-nav {
    border-right: none;
    border-bottom: 1px solid var(--hairline);
    flex-direction: row;
    flex-wrap: wrap;
  }

  .esp-nav-item {
    padding: 1rem 1.25rem;
    border-bottom: none;
    border-right: 1px solid var(--hairline);
    flex: 1 1 auto;
    min-width: 8.75rem;
  }

  .esp-nav-icon { width: 2rem; height: 2rem; }
  .esp-panel { padding: 1.75rem 1.5rem; }
  .esp-blocks { grid-template-columns: 1fr; }
  .esp-block { border-right: none; }

  .esp-block:nth-last-child(-n+2) { border-bottom: 1px solid var(--hairline); }
  .esp-block:last-child { border-bottom: none; }

  .sectores-grid { gap: 0.75rem; }
  .sector-card { padding: 1.5rem 1.25rem; min-height: 8.75rem; }

  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }

  .credentials-logos { padding: 0.5rem 0.75rem; gap: 1rem; }
  .credentials-logo--ue { height: 2.25rem; }
  .credentials-logo--fe { height: 1.875rem; }
  .credentials-logo--cam { height: 2rem; }
  .credentials-logo--iso { width: 5.75rem; height: 5.75rem; }

  .legal-modal { padding: 2.25rem 1.5rem 2rem; }
  .legal-modal h3 { font-size: 1.375rem; }
}

/* Small mobile (≤480px) */
@media (max-width: 480px) {
  .sectores-grid { grid-template-columns: 1fr; }

  .header { padding-left: 1.25rem; padding-right: 1.25rem; }

  .hero h1 { font-size: clamp(1.875rem, 10vw, 2.75rem); }
}

@media (max-width: 640px) {
  .theme-toggle {
    bottom: 1rem;
    right: 1rem;
    width: 2.5rem;
    height: 2.5rem;
  }
}