/* ============================================================
   MARBE — Estudio de Narrativa Estratégica
   main.css — Sistema de Diseño Completo
   Versión 1.0 | Fase 1
   ============================================================ */

/* ==========================================
   1. VARIABLES DEL SISTEMA DE DISEÑO
   ========================================== */

:root {

  /* ── Paleta de Color ── */
  --c-bg:          #08080A;
  --c-bg-2:        #0D0D10;
  --c-bg-3:        #131318;
  --c-bg-4:        #1C1C22;
  --c-bg-hover:    #222228;

  --c-border:      rgba(255, 255, 255, 0.07);
  --c-border-md:   rgba(255, 255, 255, 0.12);
  --c-border-lg:   rgba(255, 255, 255, 0.18);

  --c-text:        #EEEAE4;
  --c-text-muted:  rgba(238, 234, 228, 0.55);
  --c-text-subtle: rgba(238, 234, 228, 0.28);
  --c-text-dim:    rgba(238, 234, 228, 0.15);

  --c-gold:        #C8A862;
  --c-gold-hover:  #D9BC82;
  --c-gold-dim:    rgba(200, 168, 98, 0.12);
  --c-gold-border: rgba(200, 168, 98, 0.3);

  --c-white:       #FFFFFF;
  --c-overlay-md:  rgba(0, 0, 0, 0.5);
  --c-overlay-lg:  rgba(0, 0, 0, 0.75);
  --c-overlay-xl:  rgba(0, 0, 0, 0.88);

  /* ── Tipografía ── */
  --f-display: 'Inter Tight', 'Inter', system-ui, sans-serif;
  --f-body:    'Inter', system-ui, sans-serif;

  --t-display:  clamp(2.6rem, 5.5vw, 4.8rem);
  --t-h1:       clamp(2.1rem, 4vw,   3.4rem);
  --t-h2:       clamp(1.7rem, 3vw,   2.6rem);
  --t-h3:       clamp(1.1rem, 1.8vw, 1.4rem);
  --t-body-lg:  clamp(1rem, 1.4vw, 1.15rem);
  --t-body:     1rem;
  --t-sm:       0.875rem;
  --t-xs:       0.75rem;

  --lh-tight:   1.1;
  --lh-snug:    1.3;
  --lh-normal:  1.6;
  --lh-loose:   1.75;

  --ls-tight:   -0.025em;
  --ls-snug:    -0.015em;
  --ls-normal:  0;
  --ls-wide:    0.05em;
  --ls-wider:   0.12em;

  /* ── Espaciado (base 8px) ── */
  --sp-1:   8px;
  --sp-2:   16px;
  --sp-3:   24px;
  --modal-close-h: 84px; /* sp-3*2 + 36px botón = altura fija del header del modal */
  --sp-4:   32px;
  --sp-5:   40px;
  --sp-6:   48px;
  --sp-7:   56px;
  --sp-8:   64px;
  --sp-10:  80px;
  --sp-12:  96px;
  --sp-16:  128px;
  --sp-20:  160px;

  --section-v:    clamp(80px, 10vw, 140px);
  --section-v-sm: clamp(48px, 6vw, 80px);

  /* ── Layout ── */
  --max-w:        1440px;
  --max-w-text:   760px;
  --container-px: clamp(24px, 5vw, 80px);
  --nav-h:        72px;

  /* ── Animaciones ── */
  --ease-cinematic: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-smooth:    cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out:       cubic-bezier(0, 0, 0.2, 1);
  --ease-in:        cubic-bezier(0.4, 0, 1, 1);
  --ease-spring:    cubic-bezier(0.34, 1.56, 0.64, 1);

  --t-fast:   0.2s;
  --t-base:   0.3s;
  --t-med:    0.5s;
  --t-slow:   0.8s;
  --t-xslow:  1.2s;

  /* ── Radio y sombras ── */
  --r-sm:   4px;
  --r-md:   8px;
  --r-lg:   12px;
  --r-xl:   20px;
  --r-pill: 999px;
}

/* ==========================================
   2. RESET Y BASE
   ========================================== */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
}

/* iOS Safari ignora overflow-x: hidden en body solo — se necesita en html también */
html {
  overflow-x: hidden;
}

body {
  background-color: var(--c-bg);
  color: var(--c-text);
  font-family: var(--f-body);
  font-size: var(--t-body);
  line-height: var(--lh-normal);
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

body.modal-open {
  overflow: hidden;
}

img, video {
  max-width: 100%;
  display: block;
  vertical-align: middle;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--t-base) var(--ease-smooth);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--f-display);
  font-weight: 500;
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-snug);
}

::selection {
  background: var(--c-gold-dim);
  color: var(--c-text);
}

:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 4px;
  border-radius: var(--r-sm);
}

/* ==========================================
   3. LAYOUT UTILITIES
   ========================================== */

.container {
  width: 100%;
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-px);
  padding-right: var(--container-px);
}

.container--narrow {
  max-width: 900px;
}

.container--text {
  max-width: var(--max-w-text);
}

.section-pad {
  padding-top: var(--section-v);
  padding-bottom: var(--section-v);
}

.section-pad--sm {
  padding-top: var(--section-v-sm);
  padding-bottom: var(--section-v-sm);
}

.section-header {
  margin-bottom: clamp(40px, 6vw, 72px);
}

.section-header--center {
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.eyebrow {
  display: inline-block;
  font-family: var(--f-body);
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: var(--sp-3);
}

.eyebrow--subtle {
  color: var(--c-text-subtle);
}

/* Divisor */
.divider {
  height: 1px;
  background: var(--c-border);
}

/* Visually hidden (a11y) */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================
   4. BOTONES
   ========================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 14px 28px;
  border-radius: var(--r-pill);
  font-family: var(--f-body);
  font-size: var(--t-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition:
    background var(--t-base) var(--ease-smooth),
    color var(--t-base) var(--ease-smooth),
    border-color var(--t-base) var(--ease-smooth),
    transform var(--t-base) var(--ease-cinematic),
    box-shadow var(--t-base) var(--ease-smooth);
  border: 1px solid transparent;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

/* Primario (gold sólido) */
.btn--primary {
  background: var(--c-gold);
  color: var(--c-bg);
  border-color: var(--c-gold);
  font-weight: 600;
}

.btn--primary:hover {
  background: var(--c-gold-hover);
  border-color: var(--c-gold-hover);
  box-shadow: 0 8px 32px rgba(200, 168, 98, 0.25);
}

/* Fantasma (borde blanco) */
.btn--ghost {
  background: transparent;
  color: var(--c-text);
  border-color: var(--c-border-md);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--c-border-lg);
}

/* Outline (borde sutil) */
.btn--outline {
  background: transparent;
  color: var(--c-text);
  border-color: var(--c-border-md);
}

.btn--outline:hover {
  background: var(--c-bg-3);
  border-color: var(--c-gold-border);
  color: var(--c-gold);
}

/* Texto (sin borde ni fondo) */
.btn--text {
  padding: 0;
  color: var(--c-gold);
  background: none;
  border: none;
  letter-spacing: 0;
}

.btn--text:hover {
  color: var(--c-gold-hover);
  transform: none;
}

.btn--text::after {
  content: ' →';
}

/* Tamaños */
.btn--sm {
  padding: 10px 20px;
  font-size: var(--t-xs);
}

.btn--lg {
  padding: 18px 36px;
  font-size: var(--t-body);
}

/* ==========================================
   5. NAVEGACIÓN
   ========================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition:
    background var(--t-base) var(--ease-smooth),
    border-color var(--t-base) var(--ease-smooth),
    backdrop-filter var(--t-base) var(--ease-smooth);
  border-bottom: 1px solid transparent;
}

.nav.is-scrolled {
  background: rgba(8, 8, 10, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--c-border);
}

.nav__container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--container-px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-8);
}

.nav__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  cursor: pointer;
  transition: opacity var(--t-base) var(--ease-smooth);
}

.nav__logo:hover {
  opacity: 0.8;
}

.nav__logo img {
  height: 28px;
  width: auto;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}

.nav__link {
  display: inline-block;
  padding: 8px 16px;
  font-size: var(--t-sm);
  font-weight: 400;
  color: var(--c-text-muted);
  border-radius: var(--r-pill);
  cursor: pointer;
  transition:
    color var(--t-base) var(--ease-smooth),
    background var(--t-base) var(--ease-smooth);
  letter-spacing: 0.01em;
}

.nav__link:hover {
  color: var(--c-text);
  background: rgba(255, 255, 255, 0.05);
}

/* Todos los nav links activos → relleno dorado */
.nav__link.is-active {
  background: var(--c-gold);
  color: var(--c-bg);
  border-color: var(--c-gold);
  font-weight: 600;
}
.nav__link.is-active:hover {
  background: var(--c-gold-hover);
  border-color: var(--c-gold-hover);
  box-shadow: 0 8px 32px rgba(200, 168, 98, 0.25);
}

.nav__cta {
  margin-left: var(--sp-2);
}

/* Evita que .nav__link sobreescriba el color de los botones CTA */
.nav__link.btn--primary {
  color: var(--c-bg);
}
.nav__link.btn--ghost {
  color: var(--c-text);
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
  border-radius: var(--r-sm);
  transition: background var(--t-fast) var(--ease-smooth);
}

.nav__hamburger:hover {
  background: rgba(255, 255, 255, 0.06);
}

.nav__hamburger span {
  display: block;
  height: 1.5px;
  background: var(--c-text);
  border-radius: 2px;
  transition:
    transform var(--t-base) var(--ease-cinematic),
    opacity var(--t-base) var(--ease-smooth),
    width var(--t-base) var(--ease-cinematic);
}

.nav__hamburger span:nth-child(1) { width: 24px; }
.nav__hamburger span:nth-child(2) { width: 18px; }
.nav__hamburger span:nth-child(3) { width: 24px; }

.nav__hamburger.is-open span:nth-child(1) {
  width: 24px;
  transform: translateY(6.5px) rotate(45deg);
}

.nav__hamburger.is-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav__hamburger.is-open span:nth-child(3) {
  width: 24px;
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ==========================================
   6. MENÚ MOBILE
   ========================================== */

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(8, 8, 10, 0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--sp-8) var(--container-px);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-16px);
  transition:
    opacity 0.4s var(--ease-cinematic),
    transform 0.4s var(--ease-cinematic);
}

.mobile-menu.is-open {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.mobile-menu__inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  justify-content: space-between;
  padding-top: var(--nav-h);
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
  padding-top: var(--sp-8);
}

.mobile-menu__link {
  display: block;
  font-family: var(--f-display);
  font-size: clamp(1.8rem, 6vw, 3rem);
  font-weight: 400;
  color: var(--c-text-muted);
  line-height: 1.2;
  padding: var(--sp-2) 0;
  border-bottom: 1px solid var(--c-border);
  cursor: pointer;
  transition:
    color var(--t-base) var(--ease-smooth),
    padding-left var(--t-base) var(--ease-cinematic);
}

.mobile-menu__link:hover,
.mobile-menu__link.is-active {
  color: var(--c-text);
  padding-left: var(--sp-3);
}

.mobile-menu__link--cta {
  color: var(--c-gold);
  border-bottom-color: var(--c-gold-border);
}

.mobile-menu__footer {
  padding-bottom: var(--sp-4);
  border-top: 1px solid var(--c-border);
  padding-top: var(--sp-4);
}

.mobile-menu__footer p {
  font-size: var(--t-sm);
  color: var(--c-text-subtle);
}

.mobile-menu__footer a {
  color: var(--c-text-subtle);
  transition: color var(--t-base);
}

.mobile-menu__footer a:hover {
  color: var(--c-text-muted);
}

/* ==========================================
   7. SPA — SISTEMA DE PÁGINAS
   ========================================== */

.page {
  min-height: 100vh;
  display: none;
  opacity: 0;
}

.page.is-active {
  display: block;
  opacity: 1;
}

/* Transición overlay */
.page-transition {
  position: fixed;
  inset: 0;
  background: var(--c-bg);
  z-index: 200;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.35s var(--ease-smooth);
}

.page-transition.is-active {
  opacity: 1;
  pointer-events: all;
}

/* ==========================================
   8. HERO — PÁGINA INICIO
   ========================================== */

.hero {
  position: relative;
  height: 100svh;
  min-height: 600px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

/* Video container */
.hero__video-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero__video--mobile {
  display: none;
}

/* Gradiente overlay */
.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(
      to top,
      rgba(8, 8, 10, 0.92) 0%,
      rgba(8, 8, 10, 0.55) 35%,
      rgba(8, 8, 10, 0.25) 65%,
      rgba(8, 8, 10, 0.15) 100%
    );
}

/* Contenido hero */
.hero__content {
  position: relative;
  z-index: 2;
  padding-bottom: clamp(60px, 8vw, 100px);
  max-width: var(--max-w);
}

.hero__eyebrow {
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: var(--sp-3);
  opacity: 0;
  animation: heroReveal 1s var(--ease-cinematic) 0.3s forwards;
}

.hero__headline {
  font-family: var(--f-display);
  font-size: var(--t-display);
  font-weight: 600;
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  color: var(--c-text);
  max-width: 850px;
  margin-bottom: var(--sp-4);
  opacity: 0;
  animation: heroReveal 1.1s var(--ease-cinematic) 0.5s forwards;
}

.hero__subhead {
  font-size: var(--t-body-lg);
  color: var(--c-text-muted);
  max-width: 560px;
  line-height: var(--lh-loose);
  margin-bottom: var(--sp-6);
  opacity: 0;
  animation: heroReveal 1.1s var(--ease-cinematic) 0.7s forwards;
}

.hero__ctas {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
  opacity: 0;
  animation: heroReveal 1s var(--ease-cinematic) 0.9s forwards;
}

/* Indicador de scroll */
.hero__scroll {
  position: absolute;
  bottom: 36px;
  right: var(--container-px);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  opacity: 0;
  animation: heroReveal 1s var(--ease-cinematic) 1.2s forwards;
}

.hero__scroll-line {
  display: block;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, transparent, var(--c-text-subtle));
  animation: scrollPulse 2s var(--ease-smooth) infinite 1.5s;
}

.hero__scroll-text {
  font-size: 10px;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--c-text-subtle);
  writing-mode: vertical-lr;
  transform: rotate(180deg);
}

@keyframes heroReveal {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 0.7; transform: scaleY(1.1); }
}

/* ==========================================
   9. DIFERENCIACIÓN
   ========================================== */

.diferenciacion {
  background: var(--c-bg);
  padding: var(--section-v) 0;
  border-top: 1px solid var(--c-border);
}

.diferenciacion__quote {
  font-family: var(--f-display);
  font-size: clamp(1.5rem, 3.5vw, 2.8rem);
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: var(--ls-snug);
  color: var(--c-text);
  max-width: 820px;
  margin-bottom: clamp(48px, 7vw, 96px);
  position: relative;
}

.diferenciacion__quote::before {
  content: '"';
  position: absolute;
  left: -0.5em;
  top: -0.15em;
  font-size: 2em;
  color: var(--c-gold);
  opacity: 0.4;
  font-family: Georgia, serif;
  line-height: 1;
}

.pilares {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--c-border);
}

.pilar {
  padding: clamp(32px, 4vw, 56px) clamp(24px, 3vw, 48px);
  border-right: 1px solid var(--c-border);
  transition: background var(--t-base) var(--ease-smooth);
}

.pilar:last-child {
  border-right: none;
}

.pilar:hover {
  background: var(--c-bg-3);
}

.pilar__num {
  display: block;
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: var(--ls-wider);
  color: var(--c-gold);
  margin-bottom: var(--sp-4);
  font-family: var(--f-body);
}

.pilar__title {
  font-family: var(--f-display);
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  font-weight: 500;
  color: var(--c-text);
  margin-bottom: var(--sp-3);
  letter-spacing: var(--ls-snug);
  line-height: var(--lh-snug);
}

.pilar__desc {
  font-size: var(--t-sm);
  color: var(--c-text-muted);
  line-height: var(--lh-loose);
}

/* ==========================================
   10. EXPERTISE PREVIEW — INICIO
   ========================================== */

.expertise-preview {
  padding: var(--section-v) 0;
  background: var(--c-bg-2);
  border-top: 1px solid var(--c-border);
}

.expertise-preview .section-header p {
  font-size: var(--t-body-lg);
  color: var(--c-text-muted);
  max-width: 640px;
  line-height: var(--lh-loose);
  margin-top: var(--sp-3);
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--c-border);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  margin-bottom: clamp(40px, 5vw, 64px);
}

/* Card de expertise */
.expertise-card {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  cursor: pointer;
  background: var(--c-bg-3);
}

.expertise-card__media {
  position: absolute;
  inset: 0;
}

.expertise-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease-cinematic);
  will-change: transform;
}

.expertise-card:hover .expertise-card__media img {
  transform: scale(1.07);
}

/* Overlay gradiente base */
.expertise-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(8, 8, 10, 0.92) 0%,
    rgba(8, 8, 10, 0.3) 50%,
    transparent 100%
  );
  transition: background 0.5s var(--ease-cinematic);
}

.expertise-card:hover .expertise-card__overlay {
  background: linear-gradient(
    to top,
    rgba(8, 8, 10, 0.95) 0%,
    rgba(8, 8, 10, 0.7) 60%,
    rgba(8, 8, 10, 0.3) 100%
  );
}

/* Contenido del card */
.expertise-card__content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: clamp(20px, 3vw, 32px);
  z-index: 2;
}

.expertise-card__num {
  display: block;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: var(--sp-1);
  opacity: 0.8;
}

.expertise-card__title {
  font-family: var(--f-display);
  font-size: clamp(0.9rem, 1.6vw, 1.2rem);
  font-weight: 500;
  color: var(--c-text);
  line-height: var(--lh-snug);
  letter-spacing: var(--ls-snug);
  margin-bottom: 0;
}

.expertise-card__desc {
  font-size: var(--t-xs);
  color: var(--c-text-muted);
  line-height: var(--lh-loose);
  margin-top: var(--sp-2);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(8px);
  transition:
    opacity 0.4s var(--ease-smooth),
    transform 0.4s var(--ease-cinematic),
    max-height 0.4s var(--ease-smooth);
}

.expertise-card:hover .expertise-card__desc {
  max-height: 100px;
  opacity: 1;
  transform: translateY(0);
}

.expertise-card__cta {
  display: inline-block;
  font-size: var(--t-xs);
  font-weight: 500;
  color: var(--c-gold);
  letter-spacing: 0.05em;
  margin-top: var(--sp-2);
  opacity: 0;
  transform: translateY(6px);
  transition:
    opacity 0.4s var(--ease-smooth) 0.05s,
    transform 0.4s var(--ease-cinematic) 0.05s;
}

.expertise-card:hover .expertise-card__cta {
  opacity: 1;
  transform: translateY(0);
}

.expertise-preview__cta {
  text-align: center;
}

/* ==========================================
   11. CLIENTES — PRUEBA SOCIAL
   ========================================== */

.clientes {
  padding: var(--section-v) 0;
  background: var(--c-bg);
  border-top: 1px solid var(--c-border);
}

.clientes .section-header h2 {
  font-size: clamp(1.3rem, 2.5vw, 2rem);
  color: var(--c-text-muted);
  font-weight: 400;
  letter-spacing: var(--ls-snug);
}

.logos-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(24px, 4vw, 56px);
  row-gap: clamp(28px, 4vw, 44px);
}

.logo-item {
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-item img {
  height: auto;
  max-height: 32px;
  max-width: 130px;
  width: auto;
  filter: brightness(10);
  opacity: 0.35;
  transition:
    opacity 0.4s var(--ease-smooth),
    filter 0.4s var(--ease-smooth),
    transform 0.4s var(--ease-cinematic);
  object-fit: contain;
}

.logo-item:hover img {
  opacity: 0.75;
  filter: brightness(10);
  transform: translateY(-2px);
}

/* ==========================================
   12. CTA FINAL — INICIO
   ========================================== */

.cta-final {
  padding: var(--section-v) 0;
  background: var(--c-bg-2);
  border-top: 1px solid var(--c-border);
  text-align: center;
}

.cta-final__inner {
  max-width: 700px;
  margin: 0 auto;
}

.cta-final__headline {
  font-family: var(--f-display);
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 500;
  letter-spacing: var(--ls-snug);
  line-height: var(--lh-snug);
  color: var(--c-text);
  margin-bottom: var(--sp-4);
}

.cta-final__body {
  font-size: var(--t-body-lg);
  color: var(--c-text-muted);
  line-height: var(--lh-loose);
  margin-bottom: var(--sp-6);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================
   13. PÁGINA EXPERTISE
   ========================================== */

.expertise-page {
  padding-top: var(--nav-h);
}

.expertise-page__header {
  padding: clamp(64px, 10vw, 120px) 0 clamp(48px, 6vw, 72px);
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-border);
}

.expertise-page__header h1 {
  font-family: var(--f-display);
  font-size: var(--t-h1);
  font-weight: 600;
  letter-spacing: var(--ls-tight);
  line-height: var(--lh-tight);
  color: var(--c-text);
  margin-bottom: var(--sp-4);
}

.expertise-page__header p {
  font-size: var(--t-body-lg);
  color: var(--c-text-muted);
  max-width: 640px;
  line-height: var(--lh-loose);
}

/* Navegación sticky expertise */
.expertise-nav {
  position: sticky;
  top: var(--nav-h);
  z-index: 50;
  background: rgba(8, 8, 10, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--c-border);
  overflow: hidden;
}

/* Toggle mobile — oculto en desktop */
.expertise-nav__toggle {
  display: none;
}

/* Indicador de scroll horizontal — desvanece el borde derecho */
.expertise-nav::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 60px;
  height: 100%;
  background: linear-gradient(to right, transparent, var(--c-bg));
  pointer-events: none;
  z-index: 1;
}

.expertise-nav__list {
  display: flex;
  overflow-x: scroll;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.expertise-nav__list::-webkit-scrollbar {
  display: none;
}

.expertise-nav__item {
  flex-shrink: 0;
  padding: 0;
}

.expertise-nav__link {
  display: block;
  padding: 18px 16px;
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--c-text-subtle);
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition:
    color var(--t-base) var(--ease-smooth),
    border-color var(--t-base) var(--ease-smooth);
}

.expertise-nav__link:hover {
  color: var(--c-text-muted);
}

.expertise-nav__link.is-active {
  color: var(--c-text);
  border-bottom-color: var(--c-gold);
}

/* Mobile expertise nav — dropdown compacto */
@media (max-width: 767px) {
  .expertise-nav {
    overflow: visible; /* permite que el dropdown sobresalga */
  }

  .expertise-nav::after {
    display: none; /* ocultar fade-indicador de scroll horizontal */
  }

  .expertise-nav__toggle {
    display: flex;
    width: 100%;
    padding: 14px var(--sp-4);
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-3);
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--c-text);
    font-family: var(--f-body);
    font-size: var(--t-sm);
    font-weight: 500;
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
  }

  .expertise-nav__toggle-icon {
    flex-shrink: 0;
    color: var(--c-text-subtle);
    transition: transform 0.25s var(--ease-smooth);
  }

  .expertise-nav.is-open .expertise-nav__toggle-icon {
    transform: rotate(180deg);
  }

  .expertise-nav__list {
    display: none;
    flex-direction: column;
    position: absolute;
    left: 0;
    right: 0;
    background: rgba(8, 8, 10, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--c-border);
    z-index: 10;
    overflow: hidden;
  }

  .expertise-nav.is-open .expertise-nav__list {
    display: flex;
  }

  .expertise-nav__item {
    padding: 0;
    border-bottom: 1px solid var(--c-border);
  }

  .expertise-nav__item:last-child {
    border-bottom: none;
  }

  .expertise-nav__link {
    padding: 14px var(--sp-4);
    border-bottom: none !important;
    font-size: var(--t-sm);
    width: 100%;
  }

  .expertise-nav__link.is-active {
    color: var(--c-gold);
    border-bottom: none !important;
  }
}

/* Sección de expertise */
.expertise-section {
  padding: clamp(64px, 8vw, 112px) 0;
  border-bottom: 1px solid var(--c-border);
}

.expertise-section:nth-child(even) {
  background: var(--c-bg-2);
}

.expertise-section__header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
  margin-bottom: clamp(40px, 6vw, 64px);
}

.expertise-section__num {
  display: block;
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: var(--sp-3);
}

.expertise-section__title {
  font-family: var(--f-display);
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  font-weight: 500;
  letter-spacing: var(--ls-snug);
  line-height: var(--lh-snug);
  color: var(--c-text);
  margin-bottom: var(--sp-4);
}

.expertise-section__desc {
  font-size: var(--t-body-lg);
  color: var(--c-text-muted);
  line-height: var(--lh-loose);
}

.expertise-section__insight {
  padding: clamp(24px, 3vw, 36px);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-gold);
  background: var(--c-bg-3);
  border-radius: 0 var(--r-md) var(--r-md) 0;
}

.expertise-section__insight-label {
  display: block;
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: var(--sp-2);
}

.expertise-section__insight p {
  font-family: var(--f-display);
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  color: var(--c-text);
  font-style: italic;
  line-height: var(--lh-normal);
  letter-spacing: var(--ls-snug);
}

/* Grid de thumbnails expertise */
.expertise-thumbs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--sp-2);
}

.expertise-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--r-md);
  background: var(--c-bg-3);
  cursor: pointer;
}

.expertise-thumb--main {
  grid-column: span 2;
  aspect-ratio: 16 / 9;
}

.expertise-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-cinematic);
}

.expertise-thumb:hover img {
  transform: scale(1.04);
}

.expertise-thumb__overlay {
  position: absolute;
  inset: 0;
  background: rgba(8, 8, 10, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s var(--ease-smooth);
}

.expertise-thumb:hover .expertise-thumb__overlay {
  opacity: 1;
}

.expertise-thumb__play {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(200, 168, 98, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s var(--ease-spring);
}

.expertise-thumb:hover .expertise-thumb__play {
  transform: scale(1.1);
}

.expertise-thumb__play::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 9px 0 9px 18px;
  border-color: transparent transparent transparent var(--c-bg);
  margin-left: 4px;
}

/* Grid foto/mosaico */
.expertise-mosaic {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-2);
}

.expertise-mosaic__item {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: var(--r-md);
  background: var(--c-bg-3);
}

.expertise-mosaic__item--tall {
  aspect-ratio: 4 / 5;
  grid-row: span 2;
}

.expertise-mosaic__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-cinematic);
}

.expertise-mosaic__item:hover img {
  transform: scale(1.05);
}

/* CTA final expertise */
.expertise-page__cta {
  padding: clamp(64px, 8vw, 100px) 0;
  text-align: center;
  background: var(--c-bg);
}

/* ==========================================
   14. PÁGINA CASOS
   ========================================== */

.casos-page {
  padding-top: var(--nav-h);
}

.casos-page__header {
  padding: clamp(64px, 10vw, 120px) 0 clamp(48px, 6vw, 72px);
  border-bottom: 1px solid var(--c-border);
}

.casos-page__header h1 {
  font-family: var(--f-display);
  font-size: var(--t-h1);
  font-weight: 600;
  letter-spacing: var(--ls-tight);
  line-height: var(--lh-tight);
  margin-bottom: var(--sp-4);
}

.casos-page__header p {
  font-size: var(--t-body-lg);
  color: var(--c-text-muted);
  max-width: 560px;
  line-height: var(--lh-loose);
}

/* Grid de casos */
.casos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: var(--sp-2);
  padding: clamp(40px, 6vw, 72px) 0;
}

/* Card de caso */
.case-card {
  display: flex;
  flex-direction: column;
  background: var(--c-bg-2);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  cursor: pointer;
  transition:
    border-color var(--t-base) var(--ease-smooth),
    transform var(--t-slow) var(--ease-cinematic);
}

.case-card:hover {
  border-color: var(--c-border-md);
  transform: translateY(-4px);
}

.case-card__media {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--c-bg-3);
}

.case-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease-cinematic);
}

.case-card:hover .case-card__media img {
  transform: scale(1.05);
}

.case-card__hover {
  position: absolute;
  inset: 0;
  background: rgba(8, 8, 10, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.4s var(--ease-smooth);
}

.case-card:hover .case-card__hover {
  opacity: 1;
}

.case-card__cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: rgba(200, 168, 98, 0.9);
  color: var(--c-bg);
  border-radius: var(--r-pill);
  font-size: var(--t-sm);
  font-weight: 600;
  transform: translateY(8px);
  transition: transform 0.4s var(--ease-cinematic);
}

.case-card:hover .case-card__cta-btn {
  transform: translateY(0);
}

.case-card__info {
  padding: var(--sp-4) var(--sp-4) var(--sp-5);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.case-card__tag {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--c-gold);
}

.case-card__title {
  font-family: var(--f-display);
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  font-weight: 500;
  letter-spacing: var(--ls-snug);
  color: var(--c-text);
  line-height: var(--lh-snug);
}

.case-card__result {
  font-size: var(--t-sm);
  color: var(--c-text-muted);
  line-height: var(--lh-normal);
  margin-top: auto;
  padding-top: var(--sp-2);
  border-top: 1px solid var(--c-border);
}

/* Modal de caso */
.modal {
  position: fixed;
  inset: 0;
  z-index: 150;
  display: flex;
  align-items: stretch;
  justify-content: flex-end;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s var(--ease-smooth);
}

.modal.is-open {
  pointer-events: all;
  opacity: 1;
}

.modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(8, 8, 10, 0.8);
  backdrop-filter: blur(4px);
  pointer-events: none; /* nunca interceptar touch/click — el cierre se maneja en .modal */
}

.modal__panel {
  position: relative;
  z-index: 1;
  width: min(760px, 100vw);
  height: 100vh;
  height: 100dvh; /* dvh = dynamic viewport height, descuenta barra iOS */
  background: var(--c-bg-2);
  border-left: 1px solid var(--c-border);
  overflow: hidden;
  transform: translateX(40px);
  transition: transform 0.5s var(--ease-cinematic);
}

.modal.is-open .modal__panel {
  transform: translateX(0);
}

/* Header fijo — position absolute, fuera del flujo del scroll */
.modal__close {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: var(--modal-close-h);
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--sp-4);
  background: var(--c-bg-2);
  border-bottom: 1px solid var(--c-border);
  backdrop-filter: blur(20px);
}

/* Scroll container: height explícito en píxeles — iOS requiere esto para
   reconocer el elemento como scroll container desde el primer touch. */
.modal__scroll {
  position: absolute;
  top: var(--modal-close-h);
  left: 0;
  right: 0;
  height: calc(100dvh - var(--modal-close-h));
  overflow-y: scroll;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;
  overscroll-behavior: contain;
}

.modal__close-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--c-bg-3);
  border: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--c-text-muted);
  cursor: pointer;
  transition:
    background var(--t-fast),
    color var(--t-fast);
}

.modal__close-btn:hover {
  background: var(--c-bg-4);
  color: var(--c-text);
}

.modal__body {
  padding: var(--sp-6) var(--sp-6) var(--sp-10);
}

.modal__hero-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center top;
  border-radius: var(--r-md);
  margin-bottom: var(--sp-6);
}

.modal__tag {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: var(--sp-3);
  display: block;
}

.modal__title {
  font-family: var(--f-display);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 600;
  letter-spacing: var(--ls-tight);
  line-height: var(--lh-tight);
  margin-bottom: var(--sp-6);
}

.modal__section {
  margin-bottom: var(--sp-6);
  padding-bottom: var(--sp-6);
  border-bottom: 1px solid var(--c-border);
}

.modal__section:last-child {
  border-bottom: none;
}

.modal__section-label {
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--c-text-subtle);
  margin-bottom: var(--sp-3);
  display: block;
}

.modal__section p {
  font-size: var(--t-body-lg);
  color: var(--c-text-muted);
  line-height: var(--lh-loose);
}

.modal__section p + p {
  margin-top: var(--sp-3);
}

.modal__result {
  background: var(--c-bg-3);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-gold);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  padding: var(--sp-4);
}

.modal__result p {
  color: var(--c-text);
  font-size: var(--t-body-lg);
  line-height: var(--lh-loose);
}

/* ==========================================
   15. PÁGINA ESTUDIO
   ========================================== */

.estudio-page {
  padding-top: var(--nav-h);
}

.estudio-page__hero {
  padding: clamp(80px, 12vw, 160px) 0 clamp(48px, 6vw, 80px);
  border-bottom: 1px solid var(--c-border);
}

.estudio-page__hero h1 {
  font-family: var(--f-display);
  font-size: var(--t-h1);
  font-weight: 600;
  letter-spacing: var(--ls-tight);
  line-height: var(--lh-tight);
  max-width: 800px;
  margin-bottom: var(--sp-4);
}

.estudio-page__hero p {
  font-size: var(--t-body-lg);
  color: var(--c-text-muted);
  max-width: 580px;
  line-height: var(--lh-loose);
}

/* Filosofía */
.filosofia {
  padding: var(--section-v) 0;
  background: var(--c-bg-2);
  border-bottom: 1px solid var(--c-border);
}

.filosofia__inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
}

.filosofia__label {
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--c-gold);
  padding-top: 6px;
}

.filosofia__text {
  font-family: var(--f-display);
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: var(--ls-snug);
  color: var(--c-text);
}

/* Liderazgo */
.liderazgo {
  padding: var(--section-v) 0;
  border-bottom: 1px solid var(--c-border);
}

.liderazgo__inner {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: stretch;
}

.liderazgo__portrait {
  width: 100%;
  min-height: 400px; /* seguridad si el texto fuera muy corto */
  overflow: hidden;
  border-radius: var(--r-md);
  background: var(--c-bg-3);
}

.liderazgo__portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.3);
}

.liderazgo__name {
  font-family: var(--f-display);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 500;
  letter-spacing: var(--ls-tight);
  line-height: var(--lh-tight);
  margin-bottom: var(--sp-4);
}

.liderazgo__bio {
  font-size: var(--t-body-lg);
  color: var(--c-text-muted);
  line-height: var(--lh-loose);
}

.liderazgo__bio p + p {
  margin-top: var(--sp-3);
}

/* Proceso */
.proceso {
  padding: var(--section-v) 0;
  background: var(--c-bg-2);
  border-bottom: 1px solid var(--c-border);
}

.proceso__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--c-border);
  margin-top: clamp(40px, 6vw, 64px);
}

.proceso__step {
  padding: clamp(28px, 4vw, 48px) clamp(20px, 3vw, 36px);
  border-right: 1px solid var(--c-border);
  transition: background var(--t-base) var(--ease-smooth);
}

.proceso__step:last-child {
  border-right: none;
}

.proceso__step:hover {
  background: var(--c-bg-3);
}

.proceso__step-num {
  font-family: var(--f-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  color: var(--c-bg-4);
  line-height: 1;
  margin-bottom: var(--sp-3);
  letter-spacing: -0.05em;
}

.proceso__step-title {
  font-family: var(--f-display);
  font-size: clamp(0.9rem, 1.4vw, 1.1rem);
  font-weight: 500;
  color: var(--c-text);
  line-height: var(--lh-snug);
  margin-bottom: var(--sp-2);
  letter-spacing: var(--ls-snug);
}

.proceso__step-desc {
  font-size: var(--t-sm);
  color: var(--c-text-muted);
  line-height: var(--lh-loose);
}

/* Valores */
.valores {
  padding: var(--section-v) 0;
  border-bottom: 1px solid var(--c-border);
}

.valores__list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--c-border);
  margin-top: clamp(40px, 5vw, 56px);
}

.valor {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(24px, 4vw, 64px);
  padding: clamp(24px, 3.5vw, 40px) 0;
  border-bottom: 1px solid var(--c-border);
  align-items: start;
}

.valor:last-child {
  border-bottom: none;
}

.valor__mantra {
  font-family: var(--f-display);
  font-size: clamp(1rem, 1.8vw, 1.3rem);
  font-weight: 500;
  color: var(--c-text);
  letter-spacing: var(--ls-snug);
  line-height: var(--lh-snug);
}

.valor__mantra em {
  color: var(--c-gold);
  font-style: normal;
}

.valor__desc {
  font-size: var(--t-body-lg);
  color: var(--c-text-muted);
  line-height: var(--lh-loose);
}

/* ==========================================
   16. PÁGINA CONVERSACIÓN
   ========================================== */

.conversacion-page {
  padding-top: var(--nav-h);
}

.conversacion-page__hero {
  padding: clamp(80px, 12vw, 160px) 0 clamp(48px, 6vw, 80px);
  border-bottom: 1px solid var(--c-border);
}

.conversacion-page__hero h1 {
  font-family: var(--f-display);
  font-size: var(--t-h1);
  font-weight: 600;
  letter-spacing: var(--ls-tight);
  line-height: var(--lh-tight);
  max-width: 720px;
  margin-bottom: var(--sp-4);
}

.conversacion-page__hero p {
  font-size: var(--t-body-lg);
  color: var(--c-text-muted);
  max-width: 560px;
  line-height: var(--lh-loose);
}

/* Calificación de leads */
.calificacion {
  padding: var(--section-v-sm) 0;
  background: var(--c-bg-2);
  border-bottom: 1px solid var(--c-border);
}

.calificacion__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
}

.calificacion__title {
  font-family: var(--f-display);
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 500;
  letter-spacing: var(--ls-snug);
  line-height: var(--lh-snug);
  color: var(--c-text);
  margin-bottom: var(--sp-5);
}

.calificacion__list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.calificacion__item {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  font-size: var(--t-body-lg);
  color: var(--c-text-muted);
  line-height: var(--lh-normal);
}

.calificacion__item::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-gold);
  flex-shrink: 0;
  margin-top: 0.55em;
}

.calificacion__closing {
  font-family: var(--f-display);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 400;
  letter-spacing: var(--ls-snug);
  color: var(--c-text);
  margin-top: var(--sp-5);
  font-style: italic;
}

/* Formulario de contacto */
.contacto {
  padding: var(--section-v) 0;
  border-bottom: 1px solid var(--c-border);
}

.contacto__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: clamp(48px, 7vw, 96px);
  align-items: start;
}

.form-title {
  font-family: var(--f-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 500;
  letter-spacing: var(--ls-snug);
  line-height: var(--lh-snug);
  margin-bottom: var(--sp-6);
}

.form {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.form__group--half {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3);
}

.form__label {
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--c-text-subtle);
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: 14px 18px;
  background: var(--c-bg-3);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  color: var(--c-text);
  font-size: var(--t-body);
  font-family: var(--f-body);
  line-height: var(--lh-normal);
  transition:
    border-color var(--t-base) var(--ease-smooth),
    background var(--t-base) var(--ease-smooth);
  outline: none;
  -webkit-appearance: none;
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: var(--c-text-subtle);
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  border-color: var(--c-gold-border);
  background: var(--c-bg-4);
}

.form__select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%23888' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 20px;
  padding-right: 42px;
}

.form__select option {
  background: var(--c-bg-4);
  color: var(--c-text);
}

.form__textarea {
  resize: vertical;
  min-height: 140px;
}

.form__note {
  font-size: var(--t-xs);
  color: var(--c-text-subtle);
  line-height: var(--lh-normal);
}

.form__note a {
  color: var(--c-text-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Info de contacto */
.contacto__info {
  padding-top: var(--sp-4);
}

.contacto__info-title {
  font-family: var(--f-display);
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  font-weight: 500;
  letter-spacing: var(--ls-snug);
  color: var(--c-text);
  margin-bottom: var(--sp-4);
}

.contacto__details {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}

.contacto__detail {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contacto__detail-label {
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--c-text-subtle);
}

.contacto__detail-value {
  font-size: var(--t-body-lg);
  color: var(--c-text-muted);
}

.contacto__detail-value a {
  color: var(--c-text-muted);
  transition: color var(--t-base);
}

.contacto__detail-value a:hover {
  color: var(--c-gold);
}

.contacto__divider {
  height: 1px;
  background: var(--c-border);
  margin: var(--sp-5) 0;
}

.contacto__calendly {
  margin-bottom: var(--sp-5);
}

.contacto__calendly-note {
  font-size: var(--t-xs);
  color: var(--c-text-subtle);
  margin-top: var(--sp-2);
}

.contacto__availability {
  font-size: var(--t-sm);
  color: var(--c-text-subtle);
  line-height: var(--lh-loose);
}

/* ==========================================
   17. FOOTER
   ========================================== */

.footer {
  background: var(--c-bg-2);
  border-top: 1px solid var(--c-border);
  padding: clamp(40px, 5vw, 64px) 0;
}

.footer__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--sp-6);
}

.footer__logo img {
  height: 24px;
  width: auto;
  opacity: 0.6;
}

.footer__logo:hover img {
  opacity: 0.9;
}

.footer__nav {
  display: flex;
  justify-content: center;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.footer__link {
  font-size: var(--t-xs);
  color: var(--c-text-subtle);
  letter-spacing: 0.03em;
  padding: 6px 10px;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: color var(--t-base);
}

.footer__link:hover {
  color: var(--c-text-muted);
}

.footer__meta {
  text-align: right;
}

.footer__copy {
  font-size: var(--t-xs);
  color: var(--c-text-subtle);
  line-height: var(--lh-loose);
}

.footer__location {
  font-size: var(--t-xs);
  color: var(--c-text-dim);
}

/* ==========================================
   18. ESTADOS Y UTILIDADES
   ========================================== */

/* Tag de industria */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  background: var(--c-bg-3);
  border: 1px solid var(--c-border);
  border-radius: var(--r-pill);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--c-text-subtle);
}

.tag--gold {
  background: var(--c-gold-dim);
  border-color: var(--c-gold-border);
  color: var(--c-gold);
}

/* Nota confidencial */
.nota-confidencial {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 12px 20px;
  background: var(--c-bg-3);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  font-size: var(--t-sm);
  color: var(--c-text-subtle);
}

.nota-confidencial::before {
  content: '⊙';
  color: var(--c-gold);
  font-size: 0.9em;
}

/* BTS photos grid */
.bts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-2);
  margin-top: var(--sp-6);
}

.bts-grid__item {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--r-md);
  background: var(--c-bg-3);
}

.bts-grid__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-cinematic);
  filter: grayscale(0.2);
}

.bts-grid__item:hover img {
  transform: scale(1.04);
  filter: grayscale(0);
}

/* ==========================================
   19. RESPONSIVE
   ========================================== */

/* ── Tablet (max 1024px) ── */
@media (max-width: 1024px) {
  .nav__links .nav__link:not(.nav__cta) {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

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

  .pilar {
    border-right: none;
    border-bottom: 1px solid var(--c-border);
  }

  .pilar:last-child {
    border-bottom: none;
  }

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

  .expertise-section__header {
    grid-template-columns: 1fr;
  }

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

  .proceso__step {
    border-right: none;
    border-bottom: 1px solid var(--c-border);
  }

  .proceso__step:nth-child(odd) {
    border-right: 1px solid var(--c-border);
  }

  .proceso__step:last-child,
  .proceso__step:nth-last-child(2):nth-child(odd) {
    border-bottom: none;
  }

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

  .liderazgo__portrait {
    width: min(260px, 60%);
    position: static;
  }

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

  .footer__inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--sp-4);
  }

  .footer__meta {
    text-align: center;
  }

  .footer__logo img {
    margin: 0 auto;
  }
}

/* ── Mobile grande (max 768px) ── */
@media (max-width: 768px) {
  .nav__links {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  .hero__video--desktop {
    display: none;
  }

  .hero__video--mobile {
    display: block;
  }

  .hero__scroll {
    display: none;
  }

  .diferenciacion__quote::before {
    display: none;
  }

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

  .expertise-card {
    aspect-ratio: 16 / 10;
  }

  .expertise-thumb--main {
    grid-column: span 1;
  }

  /* Expertise mosaic: carrusel swipeable en mobile */
  /* scroll-snap eliminado — el snap se maneja en JS (fixHorizontalScroll) */
  .expertise-mosaic {
    display: flex;
    overflow-x: scroll;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
    gap: var(--sp-2);
    /* bleed suave hacia los bordes del contenedor */
    margin-left: calc(-1 * var(--sp-4));
    margin-right: calc(-1 * var(--sp-4));
    padding-left: var(--sp-4);
    padding-right: var(--sp-4);
  }

  .expertise-mosaic::-webkit-scrollbar {
    display: none;
  }

  /* Headers BTL ocultos en carrusel mobile */
  .expertise-mosaic .btl-project-header {
    display: none;
  }

  .expertise-mosaic__item {
    flex-shrink: 0;
    width: calc(50vw - var(--sp-5));
    aspect-ratio: 1;
  }

  .expertise-mosaic__item--tall {
    aspect-ratio: 1;
  }

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

  .case-card__media {
    aspect-ratio: 1 / 1;
  }

  .case-card__media img {
    object-position: top; /* recorte por abajo, se preserva la parte superior */
  }

  .filosofia__inner {
    grid-template-columns: 1fr;
    gap: var(--sp-4);
  }

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

  .valor {
    grid-template-columns: 1fr;
    gap: var(--sp-3);
  }

  .modal__panel {
    width: 100vw;
    border-left: none;
    border-top: 1px solid var(--c-border);
  }

  .form__group--half {
    grid-template-columns: 1fr;
  }

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

  .bts-grid__item:nth-child(3) {
    display: none;
  }
}

/* ── Mobile pequeño (max 480px) ── */
@media (max-width: 480px) {
  :root {
    --container-px: 20px;
    --nav-h: 64px;
  }

  .hero__ctas {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-2);
  }

  .hero__ctas .btn {
    width: 100%;
    justify-content: center;
  }

  .logos-grid {
    gap: 28px 20px;
  }

  .logo-item img {
    max-height: 26px;
    max-width: 110px;
  }

  .expertise-nav__item {
    padding: 0 var(--sp-2);
  }

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

  .proceso__step:nth-child(odd) {
    border-right: none;
  }
}

/* ==========================================
   20. MODAL GALLERY & EXTRAS
   ========================================== */

/* Galería de imágenes en modal */
.modal__galeria {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

.modal__galeria-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--r-sm);
  cursor: zoom-in;
  transition: transform 0.4s var(--ease-cinematic);
}

.modal__galeria-img:hover {
  transform: scale(1.02);
}

/* Botón de video en modal */
.modal__video-btn {
  display: inline-flex;
  margin-top: var(--sp-4);
}

/* Estado "enviado" del formulario */
.btn--sent {
  background: #2a6b3a;
  border-color: #2a6b3a;
  pointer-events: none;
}

/* Expertise card — keyboard focus */
.expertise-card:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 0;
}

/* Responsive expertise card keyboard */
.expertise-card:focus .expertise-card__desc,
.expertise-card:focus-within .expertise-card__desc {
  max-height: 100px;
  opacity: 1;
  transform: translateY(0);
}

.expertise-card:focus .expertise-card__cta,
.expertise-card:focus-within .expertise-card__cta {
  opacity: 1;
  transform: translateY(0);
}

/* Modal galería mobile — carrusel swipeable */
/* scroll-snap eliminado — el snap se maneja en JS (fixHorizontalScroll) */
@media (max-width: 768px) {
  .modal__galeria {
    display: flex;
    overflow-x: scroll;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
    gap: var(--sp-2);
  }

  .modal__galeria::-webkit-scrollbar {
    display: none;
  }

  .modal__galeria-img {
    flex-shrink: 0;
    width: calc(50vw - 32px);
    aspect-ratio: 4 / 3;
  }
}

@media (max-width: 480px) {
  .modal__galeria-img {
    width: calc(72vw);
  }

  .modal__body {
    padding: var(--sp-4) var(--sp-3) var(--sp-8);
  }
}

/* ============================================================
   VIMEO LIGHTBOX
   ============================================================ */

.vimeo-lightbox {
  position: fixed;
  inset: 0;
  z-index: 175;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease-smooth);
}

.vimeo-lightbox.is-open {
  opacity: 1;
  pointer-events: all;
}

.vimeo-lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 8, 10, 0.96);
  cursor: pointer;
}

.vimeo-lightbox__container {
  position: relative;
  width: 100%;
  max-width: 1100px;
  z-index: 1;
  transform: scale(0.97);
  transition: transform 0.35s var(--ease-cinematic);
}

.vimeo-lightbox.is-open .vimeo-lightbox__container {
  transform: scale(1);
}

.vimeo-lightbox__close {
  position: absolute;
  top: -52px;
  right: 0;
  background: transparent;
  border: 1px solid rgba(238, 234, 228, 0.2);
  color: var(--c-text);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.25s, background 0.25s, color 0.25s;
}

.vimeo-lightbox__close:hover {
  border-color: var(--c-gold);
  background: var(--c-gold-dim);
  color: var(--c-gold);
}

.vimeo-lightbox__frame-wrap {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  border-radius: var(--r-md);
  background: #000;
}

.vimeo-lightbox__iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* Overlay play en mosaic items con video */
.expertise-mosaic__item[data-vimeo-id] {
  cursor: pointer;
}

.expertise-mosaic__item[data-vimeo-id] .expertise-thumb__overlay {
  position: absolute;
  inset: 0;
  background: rgba(8, 8, 10, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s var(--ease-smooth);
}

.expertise-mosaic__item[data-vimeo-id]:hover .expertise-thumb__overlay {
  opacity: 1;
}

/* ── Video loops BTL — Sistema de Dos Capas ── */
.expertise-mosaic__item--loop {
  cursor: pointer;
}

.mosaic-loop__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-cinematic);
}

.mosaic-loop__fallback {
  display: none;
}

.expertise-mosaic__item--loop:hover .mosaic-loop__video {
  transform: scale(1.03);
}

/* Mobile: ocultar video, mostrar imagen estática */
@media (max-width: 767px) {
  .mosaic-loop__video {
    display: none;
  }
  .mosaic-loop__fallback {
    display: block;
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
}

/* Fotos impacto social — reducir gap para mayor densidad */
.expertise-mosaic--impacto {
  margin-top: var(--sp-3);
}

/* Modal — múltiples botones de video */
.modal__videos {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-3);
}

.modal__videos .modal__video-btn {
  flex: 1 1 auto;
  min-width: 200px;
  font-size: var(--t-sm);
  padding: 10px 16px;
  white-space: nowrap;
}

@media (max-width: 600px) {
  .modal__videos {
    flex-direction: column;
  }
  .modal__videos .modal__video-btn {
    width: 100%;
  }
}

body.vimeo-open {
  overflow: hidden;
}

@media (max-width: 768px) {
  .vimeo-lightbox {
    padding: 16px;
    align-items: center;
  }

  .vimeo-lightbox__close {
    top: -48px;
    right: 0;
  }
}

/* ============================================================
   PHOTO LIGHTBOX
   ============================================================ */

.photo-lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s var(--ease-smooth);
}

.photo-lightbox.is-open {
  opacity: 1;
  pointer-events: all;
}

.photo-lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 8, 10, 0.97);
  cursor: pointer;
}

.photo-lightbox__container {
  position: relative;
  width: 100%;
  max-width: 1000px;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.photo-lightbox__close {
  position: absolute;
  top: -52px;
  right: 0;
  background: transparent;
  border: 1px solid rgba(238, 234, 228, 0.2);
  color: var(--c-text);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.25s, background 0.25s, color 0.25s;
  z-index: 2;
}

.photo-lightbox__close:hover {
  border-color: var(--c-gold);
  background: var(--c-gold-dim);
  color: var(--c-gold);
}

.photo-lightbox__stage {
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.photo-lightbox__img {
  max-height: 76vh;
  max-width: 100%;
  object-fit: contain;
  border-radius: var(--r-md);
  display: block;
  transition: opacity 0.18s var(--ease-smooth);
}

.photo-lightbox__img.is-fading {
  opacity: 0;
}

.photo-lightbox__footer {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 20px;
}

.photo-lightbox__counter {
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--c-text-muted);
}

.photo-lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(8, 8, 10, 0.6);
  border: 1px solid rgba(238, 234, 228, 0.15);
  color: var(--c-text);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: border-color 0.25s, background 0.25s, color 0.25s;
  z-index: 2;
}

.photo-lightbox__nav:hover {
  border-color: var(--c-gold);
  background: var(--c-gold-dim);
  color: var(--c-gold);
}

.photo-lightbox__nav--prev {
  left: 12px;
}

.photo-lightbox__nav--next {
  right: 12px;
}

@media (max-width: 768px) {
  .photo-lightbox {
    padding: 16px;
    align-items: center;
  }

  .photo-lightbox__close {
    top: -48px;
  }

  .photo-lightbox__img {
    max-height: 65vh;
  }
}

/* ==========================================
   STATS STRIP — Franja de estadísticas (Inicio)
   ========================================== */

.stats-strip {
  background: var(--c-bg-2);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  padding: clamp(48px, 7vw, 80px) 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.stat-item {
  text-align: center;
  padding: var(--sp-5) var(--sp-4);
  border-right: 1px solid var(--c-border);
}

.stat-item:last-child {
  border-right: none;
}

.stat-item__number {
  display: block;
  font-family: var(--f-display);
  font-size: clamp(2.4rem, 4.5vw, 3.8rem);
  font-weight: 600;
  letter-spacing: var(--ls-tight);
  color: var(--c-gold);
  line-height: 1;
  margin-bottom: var(--sp-2);
}

.stat-item__label {
  display: block;
  font-size: var(--t-sm);
  font-weight: 400;
  color: var(--c-text-muted);
  letter-spacing: 0.02em;
  line-height: var(--lh-normal);
}

@media (max-width: 600px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-item:nth-child(2) {
    border-right: none;
  }
  .stat-item:nth-child(1),
  .stat-item:nth-child(2) {
    border-bottom: 1px solid var(--c-border);
  }
}

/* ==========================================
   VIMEO THUMB AUTO — Thumbnails dinámicos via oEmbed
   ========================================== */

.expertise-thumb.vimeo-thumb-auto,
.expertise-mosaic__item.vimeo-thumb-auto {
  min-height: 180px;
  background: var(--c-bg-3);
}

.expertise-thumb.vimeo-thumb-auto img,
.expertise-mosaic__item.vimeo-thumb-auto img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ==========================================
   PHOTO LIGHTBOX — Cursor zoom en fotos puras
   ========================================== */

.expertise-mosaic__item:not([data-vimeo-id]),
.expertise-thumb:not([data-vimeo-id]) {
  cursor: zoom-in;
}

/* ==========================================
   MODAL — Nav prev/next entre casos
   ========================================== */

.modal__case-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.modal__case-nav-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--c-bg-3);
  border: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--c-text-muted);
  cursor: pointer;
  transition:
    background var(--t-fast),
    color var(--t-fast),
    border-color var(--t-fast);
}

.modal__case-nav-btn:hover:not(:disabled) {
  background: var(--c-bg-4);
  color: var(--c-text);
  border-color: var(--c-border-md);
}

.modal__case-nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.modal__case-counter {
  font-size: var(--t-xs);
  color: var(--c-text-subtle);
  letter-spacing: 0.05em;
  padding: 0 4px;
  min-width: 32px;
  text-align: center;
}

/* ==========================================
   MODAL — Footer CTA
   ========================================== */

.modal__footer-cta {
  margin-top: var(--sp-8);
  padding: var(--sp-5) var(--sp-5);
  background: var(--c-bg-3);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-gold);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
}

.modal__footer-cta p {
  font-family: var(--f-display);
  font-size: clamp(0.9rem, 1.4vw, 1.05rem);
  font-weight: 500;
  color: var(--c-text);
  line-height: var(--lh-snug);
  margin: 0;
}

@media (max-width: 600px) {
  .modal__footer-cta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-3);
  }
}

/* ==========================================
   TRUST STRIP — Conversación (logos clientes)
   ========================================== */

.trust-strip-form {
  padding: var(--sp-6) 0;
  background: var(--c-bg-2);
  border-bottom: 1px solid var(--c-border);
}

.trust-strip-form__label {
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--c-text-subtle);
  text-align: center;
  margin-bottom: var(--sp-4);
}

.trust-strip-form__logos {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-3) clamp(24px, 4vw, 48px);
}

.trust-strip-form__logos img {
  height: 26px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: 0.32;
  transition: opacity var(--t-base);
}

.trust-strip-form__logos img:hover {
  opacity: 0.6;
}

/* ==========================================
   BACK TO TOP
   ========================================== */

.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 80;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--c-bg-3);
  border: 1px solid var(--c-border-md);
  color: var(--c-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition:
    opacity 0.3s var(--ease-smooth),
    transform 0.3s var(--ease-cinematic),
    background var(--t-fast),
    color var(--t-fast),
    border-color var(--t-fast);
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--c-bg-4);
  border-color: var(--c-gold-border);
  color: var(--c-gold);
}

@media (max-width: 767px) {
  .back-to-top {
    bottom: 20px;
    right: 16px;
    width: 40px;
    height: 40px;
  }
}

/* ==========================================
   BTL — Headers de proyecto dentro del mosaic
   ========================================== */

.btl-project-header {
  grid-column: 1 / -1;
  display: flex;
  align-items: baseline;
  gap: var(--sp-3);
  padding: var(--sp-5) 0 var(--sp-2);
  border-top: 1px solid var(--c-border);
  margin-top: var(--sp-1);
}

.btl-project-header:first-child {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.btl-project-header__name {
  font-family: var(--f-display);
  font-size: clamp(0.9rem, 1.3vw, 1.05rem);
  font-weight: 500;
  letter-spacing: var(--ls-snug);
  color: var(--c-text);
}

.btl-project-header__meta {
  font-size: var(--t-xs);
  font-weight: 400;
  color: var(--c-text-subtle);
  letter-spacing: 0.02em;
}

@media (max-width: 767px) {
  .btl-project-header {
    flex-shrink: 0;
    width: 100%;
    padding: var(--sp-4) 0 var(--sp-2);
  }
}

/* ==========================================
   EXPAND ICON — Fotos puras de expertise
   ========================================== */

.expertise-mosaic__item:not([data-vimeo-id])::after,
.expertise-thumb:not([data-vimeo-id])::after {
  content: '⤢';
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 1rem;
  line-height: 1;
  color: var(--c-text);
  opacity: 0;
  background: rgba(8, 8, 10, 0.65);
  border-radius: 4px;
  padding: 5px 7px;
  backdrop-filter: blur(6px);
  transition: opacity 0.25s var(--ease-smooth);
  z-index: 2;
  pointer-events: none;
}

.expertise-mosaic__item:not([data-vimeo-id]):hover::after,
.expertise-thumb:not([data-vimeo-id]):hover::after {
  opacity: 1;
}

/* ============================================================
   CASO INLINE — Vista mobile (scroll via window, sin overflow-scroll)
   ============================================================ */

/* Ocultar la grid y el header de casos cuando el inline está activo */
.casos-grid.is-hidden,
.casos-page__header.is-hidden {
  display: none !important;
}

/* El contenedor inline: oculto por defecto en todos los breakpoints */
.caso-inline {
  display: none;
}

/* Solo activo en mobile */
@media (max-width: 768px) {
  .caso-inline.is-open {
    display: block;
    padding-bottom: var(--sp-10);
    min-height: 100svh;
  }

  /* Barra de navegación sticky — top = altura del nav fijo para no quedar tapada */
  .caso-inline__bar {
    position: sticky;
    top: var(--nav-h); /* 72px — debajo del nav fijo */
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--sp-2) var(--sp-3);
    background: var(--c-bg-2);
    border-bottom: 1px solid var(--c-border-md);
    gap: var(--sp-2);
  }

  .caso-inline__back {
    background: none;
    border: none;
    color: var(--c-gold);
    font: 500 var(--t-sm) / 1 var(--f-body);
    cursor: pointer;
    padding: var(--sp-1) 0;
    flex-shrink: 0;
    letter-spacing: 0.01em;
  }

  .caso-inline__nav {
    display: flex;
    align-items: center;
    gap: var(--sp-1);
    flex-shrink: 0;
  }

  .caso-inline__nav-btn {
    background: none;
    border: 1px solid var(--c-border-md);
    color: var(--c-text);
    width: 34px;
    height: 34px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: border-color 0.2s, color 0.2s;
    flex-shrink: 0;
  }

  .caso-inline__nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
  }

  .caso-inline__nav-btn:not(:disabled):active {
    border-color: var(--c-gold);
    color: var(--c-gold);
  }

  .caso-inline__counter {
    color: var(--c-text-muted);
    font-size: var(--t-xs);
    min-width: 38px;
    text-align: center;
    flex-shrink: 0;
  }

  /* Cuerpo: reutiliza estilos del modal */
  .caso-inline__body .modal__hero-img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    object-position: top; /* recorte por abajo, se preserva la parte superior */
    display: block;
  }

  .caso-inline__body .modal__tag {
    display: inline-block;
    margin: var(--sp-3) var(--sp-3) 0;
    font-size: var(--t-xs);
    letter-spacing: var(--ls-wider);
    text-transform: uppercase;
    color: var(--c-gold);
  }

  .caso-inline__body .modal__title {
    padding: var(--sp-2) var(--sp-3) 0;
    font-size: clamp(1.375rem, 5vw, 1.75rem);
    font-family: var(--f-display);
    font-weight: 600;
    line-height: var(--lh-snug);
    color: var(--c-text);
  }

  .caso-inline__body .modal__section {
    padding: var(--sp-4) var(--sp-3) 0;
  }

  .caso-inline__body .modal__section p {
    color: var(--c-text-muted);
    line-height: var(--lh-loose);
  }

  .caso-inline__body .modal__section-label {
    display: block;
    font-size: var(--t-xs);
    letter-spacing: var(--ls-wider);
    text-transform: uppercase;
    color: var(--c-gold);
    margin-bottom: var(--sp-2);
    font-weight: 500;
  }

  /* Galería horizontal swipeable */
  /* scroll-snap eliminado — el snap se maneja en JS (fixHorizontalScroll) */
  .caso-inline__body .modal__galeria {
    display: flex;
    gap: var(--sp-2);
    overflow-x: scroll;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
    padding: var(--sp-3);
    margin-top: var(--sp-3);
    scrollbar-width: none;
  }

  .caso-inline__body .modal__galeria::-webkit-scrollbar {
    display: none;
  }

  .caso-inline__body .modal__galeria-img {
    flex-shrink: 0;
    width: 78vw;
    max-width: 300px;
    height: auto;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: 8px;
    cursor: zoom-in;
  }

  /* Resultado destacado */
  .caso-inline__body .modal__result {
    background: var(--c-gold-dim);
    border-left: 3px solid var(--c-gold);
    border-radius: 0 8px 8px 0;
    padding: var(--sp-3);
    margin: var(--sp-3) var(--sp-3) 0;
  }

  .caso-inline__body .modal__result p {
    color: var(--c-text);
  }

  /* Botones de video */
  .caso-inline__body .modal__video-btn {
    display: block;
    width: calc(100% - var(--sp-6));
    margin: var(--sp-3) var(--sp-3) 0;
    text-align: center;
  }

  .caso-inline__body .modal__videos {
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
    margin: var(--sp-3) var(--sp-3) 0;
  }

  .caso-inline__body .modal__videos .modal__video-btn {
    width: 100%;
    margin: 0;
  }

  /* CTA footer */
  .caso-inline__body .modal__footer-cta {
    margin: var(--sp-6) var(--sp-3) 0;
    padding: var(--sp-4) var(--sp-3);
    background: var(--c-bg-3);
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--c-border);
  }

  .caso-inline__body .modal__footer-cta p {
    color: var(--c-text-muted);
    margin-bottom: var(--sp-3);
    font-size: var(--t-sm);
  }

  .caso-inline__body .modal__footer-cta .btn {
    display: inline-block;
  }
}

/* ── prefers-reduced-motion ── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}