/**
 * STYLES.CSS — Design tokens + componentes
 *
 * MAPA DE SECCIONES (busca el marcador para iterar)
 * ═══ DESIGN TOKENS ═══
 * ═══ RESET & BASE ═══
 * ═══ HEADER ═══
 * ═══ LAYOUT ═══
 * ═══ HERO HOME ═══
 * ═══ FEATURED + PROJECTS (HOME) ═══
 * ═══ HERO PROJECT ═══
 * ═══ SECTION HEADER ═══
 * ═══ PROJECT SPECS ═══
 * ═══ HERO IMAGE ═══
 * ═══ WHY IT MATTERS ═══
 * ═══ PROBLEM & OBJECTIVES ═══
 * ═══ UX RESEARCH ═══
 * ═══ PERSONAS ═══
 * ═══ JOURNEY MAP ═══
 * ═══ CARD SORTING ═══
 * ═══ SOLUTION ═══
 * ═══ DESIGNS ═══
 * ═══ RESULTS ═══
 * ═══ CTA FINAL ═══
 * ═══ ABOUT PAGE ═══
 * ═══ UTILITY ═══
 * ═══ RESPONSIVE ═══
 */

/* ═══ DESIGN TOKENS ═══ */
:root {
  /* Indigo */
  --indigo-50: #eef2ff;
  --indigo-100: #e0e7ff;
  --indigo-200: #c6d2ff;
  --indigo-300: #ede9fe;
  --indigo-500: #6366f1;
  --indigo-600: #4f46e5;
  --indigo-700: #4f39f6;
  --indigo-strong: #615fff;
  --indigo-deep: #312c85;
  --indigo-violet: #372aac;

  /* Grays */
  --gray-50: #fafaf9;
  --gray-75: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d4d4d8;
  --gray-400: #99a1af;
  --gray-500: #6a7282;
  --gray-600: #4a5565;
  --gray-700: #364153;
  --gray-900: #101828;
  --gray-near-black: #0a0a0a;

  /* Status */
  --red-50: #fef2f2;
  --red-200: #ffc9c9;
  --red-500: #e7000b;
  --red-bright: #fb2c36;
  --green-50: #f0fdf4;
  --green-100: #d1fae5;
  --green-200: #b9f8cf;
  --green-500: #00a63e;
  --green-bright: #00c950;
  --green-deep: #016630;
  --green-darkest: #0d542b;
  --green-dark: #059669;
  --yellow-500: #f0b100;

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', sans-serif;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --spacing-4xl: 80px;

  /* Transitions */
  --transition: 0.3s cubic-bezier(0.21, 0.47, 0.32, 0.98);
}

/* ═══ RESET & BASE ═══ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--gray-50);
  color: var(--gray-900);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ═══ HEADER ═══ */
.header-sticky {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(250, 250, 249, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  padding: var(--spacing-md) 0;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-size: 18px;
  font-weight: 500;
  color: var(--gray-900);
  letter-spacing: -0.5px;
}
.brand-short { display: none; }

.nav-main {
  display: flex;
  gap: var(--spacing-xl);
}

.nav-link {
  font-size: 14px;
  color: var(--gray-600);
  text-decoration: none;
  font-weight: 400;
  transition: color var(--transition);
  cursor: pointer;
}

.nav-link:hover,
.nav-link.active {
  color: var(--indigo-700);
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  background: var(--gray-100);
  border-radius: 999px;
  padding: 3px;
  gap: 0;
}

.lang-option {
  background: transparent;
  border: none;
  padding: 6px 14px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--gray-500);
  border-radius: 999px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.lang-option:hover:not(.active) {
  color: var(--gray-700);
}

.lang-option.active {
  background: var(--indigo-100);
  color: var(--indigo-700);
}

/* ═══ LAYOUT ═══ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

/* ═══ HERO HOME ═══ */
.hero-home {
  padding: var(--spacing-4xl) 0 var(--spacing-3xl);
  background-color: var(--gray-50);
}

.hero-main-title {
  font-size: 64px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--gray-900);
  margin-bottom: var(--spacing-xl);
  letter-spacing: -2px;
  max-width: 900px;
}

.hero-main-title .accent {
  color: var(--indigo-600);
}

.hero-subtitle {
  font-size: 18px;
  font-weight: 300;
  color: var(--gray-600);
  line-height: 1.6;
  max-width: 640px;
}

/* ═══ FEATURED + PROJECTS (HOME) ═══ */
.featured-section {
  padding: var(--spacing-2xl) 0;
  background-color: var(--gray-50);
}

.projects-section {
  padding: 0 0 var(--spacing-4xl);
  background-color: var(--gray-50);
}

.card-eyebrow {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gray-500);
  margin-bottom: var(--spacing-md);
}

.metric-pill {
  display: inline-flex;
  align-items: baseline;
  gap: var(--spacing-sm);
  background: var(--indigo-50);
  padding: 6px 14px;
  border-radius: 999px;
  margin: var(--spacing-md) 0 var(--spacing-lg);
  width: fit-content;
}

.metric-value {
  font-size: 14px;
  font-weight: 700;
  color: var(--indigo-700);
  letter-spacing: -0.2px;
}

.metric-label {
  font-size: 13px;
  font-weight: 400;
  color: var(--gray-600);
}

.card-cta {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--indigo-700);
  text-decoration: none;
  cursor: pointer;
  transition: color var(--transition);
}

.card-cta::after {
  content: " →";
  display: inline-block;
  margin-left: 4px;
  transition: transform var(--transition);
}

.card-cta:hover {
  color: var(--indigo-600);
}

.card-cta:hover::after {
  transform: translateX(4px);
}

.featured-card-large {
  background: var(--gray-75);
  border: 1px solid var(--gray-200);
  border-radius: 20px;
  padding: var(--spacing-2xl);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.featured-card-large:hover {
  border-color: var(--indigo-500);
  box-shadow: 0 16px 40px rgba(79, 57, 246, 0.08);
}

.featured-content {
  display: flex;
  flex-direction: column;
}

.featured-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: -1px;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

.featured-subtitle {
  font-size: 16px;
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: var(--spacing-xs);
}

.featured-image {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  aspect-ratio: 16 / 10;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

.project-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.project-card:hover {
  border-color: var(--indigo-500);
  box-shadow: 0 12px 32px rgba(79, 57, 246, 0.08);
}

.project-info {
  display: flex;
  flex-direction: column;
}

.project-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--gray-900);
  letter-spacing: -0.4px;
  line-height: 1.3;
  margin-bottom: var(--spacing-xs);
}

.project-subtitle {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.6;
}

.project-image {
  margin-top: var(--spacing-lg);
  background: var(--gray-75);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  aspect-ratio: 16 / 10;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.image-placeholder {
  font-size: 12px;
  font-weight: 500;
  color: var(--gray-400);
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

/* ━━━ Device Frames ━━━ */

/* Desktop — browser window chrome */
.device-desktop {
  width: 100%;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.07), 0 8px 24px rgba(0,0,0,0.10);
  overflow: hidden;
  position: relative;
}
.device-desktop::before {
  content: '';
  display: block;
  height: 28px;
  background: var(--gray-100);
  border-bottom: 1px solid var(--gray-200);
  flex-shrink: 0;
}
.device-desktop::after {
  content: '';
  position: absolute;
  top: 9px;
  left: 10px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #fc5f57;
  box-shadow: 15px 0 0 #fdbc2c, 30px 0 0 #33c748;
  z-index: 1;
}
.device-desktop img,
.device-desktop .image-placeholder {
  display: block;
  width: 100%;
}
.device-desktop .image-placeholder {
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Mobile — iPhone-style bezel */
.device-mobile {
  background: linear-gradient(160deg, #303030 0%, #1c1c1c 100%);
  border-radius: 16px;
  padding: 3px;
  box-shadow:
    inset 0 0 0 0.5px rgba(255,255,255,0.12),
    0 8px 24px rgba(0,0,0,0.22),
    0 2px 6px rgba(0,0,0,0.12);
  position: relative;
  display: inline-flex;
  flex-direction: column;
}
/* Dynamic Island pill */
.device-mobile::before {
  content: '';
  position: absolute;
  top: 5px;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 8px;
  background: #111;
  border-radius: 8px;
  z-index: 2;
  pointer-events: none;
}
.device-screen {
  border-radius: 13px;
  overflow: hidden;
  background: #000;
  position: relative;
}
/* Glossy screen overlay */
.device-screen::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, transparent 50%);
  z-index: 1;
  pointer-events: none;
  border-radius: inherit;
}
.device-mobile img,
.device-screen .image-placeholder {
  display: block;
  width: 100%;
}
.device-screen .image-placeholder {
  aspect-ratio: 9 / 16;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Mobile inside fixed-ratio containers (home thumbnails) */
.project-image .device-mobile,
.featured-image .device-mobile {
  width: 116px;
  height: auto;
}
.project-image .device-mobile::before,
.featured-image .device-mobile::before {
  width: 22px;
  height: 6px;
  top: 3px;
}

/* Hero frame modifier for mobile projects */
.hero-image-frame--mobile {
  aspect-ratio: unset;
  min-height: 480px;
  padding: var(--spacing-2xl) 0;
}

/* Design image modifier for mobile projects */
.design-image--mobile {
  aspect-ratio: unset;
  min-height: 540px;
  padding: var(--spacing-xl) 0;
}

/* Duo: desktop + mobile overlapping */
.device-duo {
  position: relative;
  width: 100%;
  display: flex;
  align-items: flex-end;
}
.device-duo .device-desktop {
  width: 82%;
  flex-shrink: 0;
}
.device-duo .device-mobile {
  position: absolute;
  right: 0;
  bottom: -16px;
  width: 22%;
  z-index: 2;
  filter: drop-shadow(0 12px 32px rgba(0,0,0,0.24));
}

/* ═══ ROLE NARRATIVE ═══ */
.role-section {
  padding: var(--spacing-4xl) 0;
  background: var(--gray-50);
}
.role-section .container {
  padding: 0 93.5px;
  max-width: 1387px;
}
.role-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 20px;
  padding: var(--spacing-2xl);
}
.role-header {
  margin-bottom: var(--spacing-2xl);
}
.role-ai-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--indigo-50);
  color: var(--indigo-600);
  border: 1px solid var(--indigo-100);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  padding: 4px 12px;
  margin-bottom: var(--spacing-md);
}
.role-ai-badge::before {
  content: '✦';
  font-size: 9px;
}
.role-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: -0.6px;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}
.role-intro {
  font-size: 16px;
  color: var(--gray-600);
  line-height: 1.7;
  max-width: 800px;
}
.role-stages {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}
.role-stage {
  display: flex;
  gap: var(--spacing-md);
  background: var(--gray-75);
  border-radius: 14px;
  padding: var(--spacing-lg);
}
.role-stage-number {
  font-size: 11px;
  font-weight: 700;
  color: var(--indigo-500);
  letter-spacing: 1px;
  flex-shrink: 0;
  padding-top: 3px;
}
.role-stage-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 1.4;
  margin-bottom: var(--spacing-xs);
}
.role-stage-desc {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.6;
}
.role-closing {
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-700);
  line-height: 1.6;
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--gray-200);
  font-style: italic;
}

/* ═══ HERO PROJECT ═══ */
.hero-project {
  padding: 128px 0 var(--spacing-4xl);
  background-color: var(--gray-50);
}

.hero-project .container {
  max-width: 1387px;
  padding: 0 193.5px;
}

.hero-content {
  max-width: 1000px;
}

.hero-tagline {
  font-size: 14px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.35px;
  color: var(--gray-500);
  margin-bottom: var(--spacing-lg);
}

.hero-title {
  font-size: 72px;
  font-weight: 400;
  line-height: 1.1;
  color: var(--gray-900);
  margin-bottom: var(--spacing-2xl);
  letter-spacing: -2.52px;
}

.hero-title .accent {
  color: var(--indigo-500);
}

.hero-subtitle-secondary {
  font-size: 30px;
  font-weight: 300;
  color: var(--gray-400);
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.4px;
}

.hero-description {
  font-size: 18px;
  font-weight: 300;
  color: var(--gray-500);
  line-height: 1.625;
  max-width: 800px;
}

/* ═══ SECTION HEADER (compartido por todas las secciones internas) ═══ */
.section-header {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
  font-size: 36px;
  font-weight: 400;
  line-height: 1.11;
  letter-spacing: -1.08px;
  color: var(--gray-900);
}

.section-header p {
  font-size: 18px;
  font-weight: 300;
  color: var(--gray-600);
  line-height: 1.55;
}

/* ═══ PROJECT SPECS ═══ */
.specs-section {
  padding: var(--spacing-2xl) 0;
  background-color: white;
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}

.specs-section .container {
  padding: 0 93.5px;
  max-width: 1387px;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--spacing-xl);
}

.spec-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.spec-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--gray-400);
}

.spec-value {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-900);
}

/* ═══ HERO IMAGE (mockup grande post-specs) ═══ */
.hero-image-section {
  padding: var(--spacing-2xl) 0 var(--spacing-4xl);
  background-color: var(--gray-50);
}

.hero-image-section .container {
  padding: 0 48px;
  max-width: 1387px;
}

.hero-image-frame {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.1);
  line-height: 0;
}
.hero-image-img {
  display: block;
  width: 100%;
  height: auto;
}
.hero-image-frame .image-placeholder {
  aspect-ratio: 1291 / 363;
  background: white;
  border: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ═══ WHY IT MATTERS ═══ */
.why-matters {
  padding: var(--spacing-4xl) 0;
  background-color: var(--gray-75);
}

.why-matters .container,
.problem-objectives .container,
.ux-research .container,
.personas-section .container,
.journey-map-section .container,
.card-sorting-section .container,
.solution-section .container,
.designs-section .container,
.results-section .container,
.qa-section .container,
.ab-section .container,
.ta-section .container,
.tt-section .container {
  padding: 0 93.5px;
  max-width: 1387px;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.impact-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.impact-icon {
  font-size: 24px;
  line-height: 32px;
  color: var(--gray-near-black);
  margin-bottom: var(--spacing-md);
}

.impact-eyebrow {
  font-size: 12px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--gray-400);
  line-height: 16px;
}

.impact-metric {
  font-size: 24px;
  font-weight: 400;
  line-height: 32px;
  color: var(--gray-900);
  letter-spacing: -0.4px;
}

.impact-desc {
  font-size: 14px;
  font-weight: 300;
  color: var(--gray-600);
  line-height: 1.625;
  margin-top: var(--spacing-xs);
}

/* ═══ PROBLEM & OBJECTIVES ═══ */
.problem-objectives {
  padding: var(--spacing-4xl) 0;
  background-color: var(--gray-50);
}

.po-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.po-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 33px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.po-card-title {
  font-size: 20px;
  font-weight: 400;
  color: var(--gray-900);
  line-height: 28px;
}

.problem-intro {
  font-size: 15px;
  font-weight: 400;
  color: var(--gray-700);
  line-height: 1.625;
}

/* Sub-card rojo para cada producto/competidor */
.product-card {
  background: var(--red-50);
  border: 1px solid var(--red-200);
  border-radius: 10px;
  padding: 17px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.product-card.legacy {
  /* Soporte para JSON viejos sin pros/cons */
}

.product-name {
  font-size: 22px;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 30.8px;
  letter-spacing: -0.3px;
}

.product-desc {
  font-size: 14px;
  color: var(--gray-700);
  line-height: 1.5;
}

.product-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.product-list li {
  display: flex;
  gap: var(--spacing-sm);
  align-items: flex-start;
  font-size: 14px;
  color: var(--gray-700);
  line-height: 20px;
}

.prod-icon {
  flex-shrink: 0;
  width: 12px;
  font-weight: 400;
  text-align: center;
}

.prod-icon-pos {
  color: var(--green-500);
}

.prod-icon-neg {
  color: var(--red-500);
}

/* Bottom section de problema (consequences) */
.problem-consequences {
  border-top: 1px solid var(--gray-200);
  padding-top: 17px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.consequences-label {
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-900);
  line-height: 24px;
}

.consequences-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.consequences-list li {
  font-size: 14px;
  color: var(--gray-700);
  line-height: 20px;
  padding-left: 22px;
  position: relative;
}

.consequences-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--gray-700);
}

/* Objectives (right card) */
.objectives-stack {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.objective-row {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.objective-badge {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--indigo-100);
  color: var(--indigo-700);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.objective-text {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  flex: 1;
}

.objective-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 30.8px;
  letter-spacing: -0.3px;
}

.objective-meta {
  font-size: 14px;
  font-weight: 500;
  color: var(--indigo-700);
  line-height: 20px;
}

.objective-desc {
  font-size: 14px;
  font-weight: 400;
  color: var(--gray-600);
  line-height: 20px;
}

.objectives-list-legacy {
  list-style: decimal;
  padding-left: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.objectives-list-legacy li {
  font-size: 14px;
  color: var(--gray-700);
  line-height: 1.6;
}

.objectives-list-legacy li::marker {
  color: var(--indigo-600);
  font-weight: 700;
}

/* ═══ UX RESEARCH ═══ */
.ux-research {
  padding: var(--spacing-4xl) 0;
  background-color: var(--gray-75);
}

.research-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.research-card,
.insights-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 33px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.research-card h3,
.insights-card h3 {
  font-size: 20px;
  font-weight: 400;
  color: var(--gray-900);
  line-height: 28px;
}

.hypothesis-list,
.methods-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.hypothesis-list li,
.methods-list li {
  display: flex;
  gap: var(--spacing-sm);
  align-items: flex-start;
  font-size: 14px;
  color: var(--gray-700);
  line-height: 22.4px;
}

.research-num {
  flex-shrink: 0;
  font-weight: 600;
  color: var(--indigo-strong);
  width: 16px;
}

.research-bullet {
  flex-shrink: 0;
  color: var(--gray-400);
  width: 12px;
  text-align: center;
}

.insights-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
}

.insights-block {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.insights-eyebrow {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--gray-500);
}

.quote-box {
  border-left: 4px solid var(--indigo-strong);
  padding: 0 0 0 var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.quote-box + .quote-box {
  margin-top: var(--spacing-sm);
}

.quote-text {
  font-size: 14px;
  font-style: italic;
  color: var(--gray-700);
  line-height: 22.4px;
}

.quote-author {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-900);
}

.quote-context {
  font-size: 12px;
  color: var(--gray-500);
}

.stats-stack {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.stat-value {
  font-size: 30px;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 36px;
  letter-spacing: -0.5px;
}

.stat-label {
  font-size: 14px;
  font-weight: 400;
  color: var(--gray-600);
  line-height: 20px;
}

/* ═══ PERSONAS ═══ */
.personas-section {
  padding: var(--spacing-4xl) 0;
  background-color: var(--gray-50);
}

.personas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.persona-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 33px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.persona-header {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.persona-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--indigo-100);
}

.persona-name {
  font-size: 20px;
  font-weight: 400;
  color: var(--gray-900);
  line-height: 28px;
}

.persona-role {
  font-size: 14px;
  font-weight: 300;
  color: var(--gray-600);
  line-height: 20px;
}

.persona-block {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.persona-eyebrow {
  font-size: 12px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--gray-400);
}

.persona-block ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.persona-block ul li {
  display: flex;
  gap: var(--spacing-sm);
  align-items: flex-start;
  font-size: 14px;
  font-weight: 300;
  color: var(--gray-700);
  line-height: 20px;
}

.goal-icon {
  color: var(--indigo-500);
  flex-shrink: 0;
  width: 12px;
}

.pain-icon {
  color: var(--red-bright);
  flex-shrink: 0;
  width: 12px;
}

.behavior-icon {
  color: var(--gray-400);
  flex-shrink: 0;
  width: 12px;
  text-align: center;
}

.persona-quote-block {
  border-top: 1px solid var(--gray-100);
  padding-top: var(--spacing-md);
}

.persona-quote {
  font-size: 14px;
  font-style: italic;
  font-weight: 300;
  color: var(--gray-700);
  line-height: 20px;
  padding-left: var(--spacing-md);
  border-left: 3px solid var(--indigo-500);
}

/* ═══ JOURNEY MAP ═══ */
.journey-map-section {
  padding: var(--spacing-4xl) 0;
  background-color: var(--gray-75);
}

.journey-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 33px;
}

.journey-stages {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--spacing-md);
}

.journey-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--spacing-sm);
}

.stage-number {
  width: 40px;
  height: 40px;
  background: var(--indigo-100);
  color: var(--indigo-700);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.stage-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-900);
  letter-spacing: -0.1px;
  line-height: 16px;
}

.stage-problem,
.stage-solution {
  display: flex;
  align-items: flex-start;
  gap: 4px;
  font-size: 12px;
  line-height: 16px;
  text-align: left;
}

.stage-problem {
  color: var(--red-500);
}

.stage-solution {
  color: var(--green-500);
}

.stage-icon-x,
.stage-icon-check {
  flex-shrink: 0;
  font-weight: 600;
}

/* ═══ CARD SORTING ═══ */
.card-sorting-section {
  padding: var(--spacing-4xl) 0;
  background-color: var(--gray-50);
}

.clusters-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.cluster-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 33px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.cluster-name {
  font-size: 20px;
  font-weight: 400;
  color: var(--gray-900);
  line-height: 28px;
}

.cluster-items {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.cluster-items li {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: 14px;
  color: var(--gray-700);
  line-height: 22.4px;
}

.cluster-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.cluster-color-indigo { background: var(--indigo-strong); }
.cluster-color-green  { background: var(--green-bright); }
.cluster-color-yellow { background: var(--yellow-500); }
.cluster-color-orange { background: #fe9a00; }
.cluster-color-red    { background: var(--red-500); }
.cluster-color-blue   { background: var(--indigo-600); }

.decision-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 33px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.decision-col {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.decision-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 28px;
}

.decision-desc {
  font-size: 15px;
  font-weight: 400;
  color: var(--gray-700);
  line-height: 1.6;
}

.decision-principle {
  background: var(--indigo-50);
  border: 1px solid var(--indigo-200);
  border-radius: 10px;
  padding: 17px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.principle-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--indigo-deep);
  line-height: 20px;
}

.principle-text {
  font-size: 14px;
  font-weight: 400;
  color: var(--indigo-violet);
  line-height: 20px;
}

.tradeoffs-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.tradeoffs-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  font-size: 14px;
  color: var(--gray-700);
  line-height: 22.4px;
}

.trade-icon {
  font-weight: 600;
  flex-shrink: 0;
  width: 12px;
  text-align: center;
}

.trade-pos .trade-icon { color: var(--green-500); }
.trade-neg .trade-icon { color: var(--red-500); }

.decision-mitigation {
  background: var(--green-50);
  border: 1px solid var(--green-200);
  border-radius: 10px;
  padding: 17px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.mitigation-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--green-darkest);
  line-height: 20px;
}

.mitigation-text {
  font-size: 14px;
  font-weight: 400;
  color: var(--green-deep);
  line-height: 20px;
}

/* ═══ SOLUTION ═══ */
.solution-section {
  padding: var(--spacing-4xl) 0;
  background-color: var(--gray-75);
}

.principles-card,
.decisions-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 33px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.principles-card {
  margin-bottom: var(--spacing-xl);
}

.card-inner-title {
  font-size: 20px;
  font-weight: 400;
  color: var(--gray-900);
  line-height: 28px;
}

.principles-card .card-inner-title {
  font-weight: 600;
}

.principles-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-2xl);
}

.principle-col {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.principle-number {
  font-size: 36px;
  font-weight: 700;
  color: var(--indigo-500);
  line-height: 40px;
  margin-bottom: var(--spacing-sm);
}

.principle-heading {
  font-size: 22px;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 30.8px;
  letter-spacing: -0.3px;
}

.principle-desc {
  font-size: 14px;
  font-weight: 400;
  color: var(--gray-600);
  line-height: 20px;
}

.decisions-stack {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.decision-item {
  border-left: 4px solid var(--indigo-500);
  padding-left: 28px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.decision-item-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 30.8px;
  letter-spacing: -0.3px;
}

.decision-line {
  font-size: 14px;
  line-height: 20px;
}

.decision-line strong {
  color: var(--gray-700);
  font-weight: 500;
  margin-right: var(--spacing-xs);
}

.decision-line span {
  color: var(--gray-600);
  font-weight: 400;
}

/* ═══ DESIGNS ═══ */
.designs-section {
  padding: var(--spacing-4xl) 0;
  background-color: var(--gray-50);
}

.designs-stack {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

.design-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.design-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  width: fit-content;
  line-height: 20px;
}

.design-badge-indigo {
  background: var(--indigo-300);
  color: var(--indigo-500);
}

.design-badge-green {
  background: var(--green-100);
  color: var(--green-dark);
}

.design-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 32px;
  letter-spacing: -0.4px;
}

.design-desc {
  font-size: 15px;
  font-weight: 400;
  color: var(--gray-600);
  line-height: 24px;
}

.design-image {
  background: var(--gray-75);
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  aspect-ratio: 16 / 6;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}
.design-image:has(.device-desktop),
.design-image:has(.device-mobile) {
  aspect-ratio: unset;
  overflow: visible;
  background: transparent;
  border: none;
  box-shadow: none;
  border-radius: 0;
  display: block;
}
.design-image:has(> img) {
  aspect-ratio: unset;
  overflow: hidden;
  align-items: flex-start;
}
.design-image > img {
  width: 100%;
  height: auto;
  display: block;
}

.design-images-grid {
  display: grid;
  gap: var(--spacing-lg);
}
.design-images-grid--2 { grid-template-columns: 1fr 1fr; }
.design-images-grid--3 { grid-template-columns: repeat(3, 1fr); }

/* ═══ RESULTS ═══ */
.results-section {
  padding: var(--spacing-4xl) 0;
  background-color: var(--gray-75);
}

.impact-card-wrap {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 33px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.impact-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.impact-result {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.impact-result-metric {
  font-size: 36px;
  font-weight: 700;
  color: var(--green-500);
  line-height: 40px;
}

.impact-result-label {
  font-size: 22px;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 30.8px;
  letter-spacing: -0.3px;
}

.impact-result-desc {
  font-size: 14px;
  font-weight: 400;
  color: var(--gray-600);
  line-height: 20px;
}

.results-bottom {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.learnings-card,
.nextsteps-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 33px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.learnings-stack,
.nextsteps-stack {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.learning-item,
.nextstep-item {
  padding-left: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.learning-item {
  border-left: 4px solid var(--green-bright);
}

.nextstep-item {
  border-left: 4px solid var(--indigo-strong);
}

.learning-item h4,
.nextstep-item h4 {
  font-size: 22px;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 30.8px;
  letter-spacing: -0.3px;
}

.learning-item p,
.nextstep-item p {
  font-size: 14px;
  font-weight: 400;
  color: var(--gray-600);
  line-height: 20px;
}

/* ═══ CTA FINAL ═══ */
.cta-section {
  padding: var(--spacing-4xl) 0;
  background-color: var(--gray-50);
}

.cta-section .container {
  padding: 0 293.5px;
  max-width: 1387px;
}

.cta-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--spacing-md);
}

.cta-question {
  font-size: 30px;
  font-weight: 600;
  color: var(--gray-900);
  letter-spacing: -0.9px;
  line-height: 36px;
}

.cta-description {
  font-size: 18px;
  font-weight: 400;
  color: var(--gray-600);
  line-height: 28px;
}

.cta-button {
  margin-top: var(--spacing-xl);
  display: inline-block;
  background: var(--indigo-500);
  color: white;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  padding: 16px 32px;
  border-radius: 10px;
  line-height: 22.4px;
  transition: background var(--transition);
}

.cta-button:hover {
  background: var(--indigo-700);
}

/* ═══ ABOUT PAGE ═══ */
.container-narrow {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.about-hero {
  padding: var(--spacing-4xl) 0 var(--spacing-2xl);
  background-color: var(--gray-50);
}

.about-title {
  font-size: 56px;
  font-weight: 700;
  letter-spacing: -1.8px;
  color: var(--gray-900);
  margin-bottom: var(--spacing-xl);
  line-height: 1.1;
}

.about-intro-text {
  font-size: 16px;
  font-weight: 400;
  color: var(--gray-700);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.about-intro-text:last-child {
  margin-bottom: 0;
}

.about-section {
  padding: var(--spacing-2xl) 0;
  background-color: var(--gray-50);
}

.about-section-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--gray-900);
  letter-spacing: -0.4px;
  margin-bottom: var(--spacing-xl);
}

.about-divider {
  border: none;
  border-top: 1px solid var(--gray-200);
  margin: 0 auto;
  max-width: 880px;
  width: calc(100% - var(--spacing-xl) * 2);
}

.achievements-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.achievements-list li {
  font-size: 14px;
  color: var(--gray-700);
  line-height: 1.6;
  padding-left: var(--spacing-lg);
  position: relative;
}

.achievements-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--indigo-600);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
}

.competencies-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.competency-pill {
  background: var(--gray-100);
  border-radius: 10px;
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-700);
  transition: background var(--transition);
}

.competency-pill:hover {
  background: var(--indigo-50);
  color: var(--indigo-700);
}

.experience-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.experience-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--spacing-lg);
  align-items: start;
}

.experience-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.experience-company {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-900);
  letter-spacing: -0.2px;
}

.experience-role {
  font-size: 14px;
  font-weight: 500;
  color: var(--indigo-600);
  margin-bottom: var(--spacing-xs);
}

.experience-description {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.6;
  margin-top: var(--spacing-xs);
}

.experience-period {
  font-size: 13px;
  color: var(--gray-500);
  white-space: nowrap;
  padding-top: 2px;
}

.software-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.software-tag {
  background: var(--gray-100);
  color: var(--gray-700);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 999px;
  transition: background var(--transition);
}

.software-tag:hover {
  background: var(--gray-200);
}

.about-footer {
  padding-bottom: var(--spacing-4xl);
}

.about-footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
}

.languages-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.language-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--gray-100);
}

.language-row:last-child {
  border-bottom: none;
}

.language-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-700);
}

.language-level {
  font-size: 13px;
  color: var(--gray-500);
}

.contact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.contact-list li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 14px;
  color: var(--gray-700);
}

.contact-icon {
  width: 20px;
  display: inline-flex;
  justify-content: center;
  font-size: 14px;
}

.contact-list a {
  color: var(--indigo-700);
  text-decoration: none;
  transition: color var(--transition);
}

.contact-list a:hover {
  color: var(--indigo-600);
  text-decoration: underline;
}

/* ═══ UTILITY ═══ */
.loading {
  text-align: center;
  padding: var(--spacing-4xl) var(--spacing-xl);
  color: var(--gray-600);
}

.error {
  background: var(--red-50);
  border: 1px solid var(--red-200);
  color: var(--red-500);
  padding: var(--spacing-lg);
  border-radius: 8px;
  margin: var(--spacing-xl);
}

/* ═══ UX RESEARCH — Method Cards variant (OD) ═══ */
.method-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.method-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 33px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.method-name {
  font-size: 20px;
  font-weight: 400;
  color: var(--gray-900);
  line-height: 28px;
}

.method-desc {
  font-size: 14px;
  font-weight: 400;
  color: var(--gray-600);
  line-height: 22.75px;
}

.method-finding {
  border-top: 1px solid var(--gray-100);
  padding-top: 13px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-top: auto;
}

.method-finding-label {
  font-size: 12px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--gray-400);
}

.method-finding-text {
  font-size: 14px;
  font-weight: 400;
  color: var(--indigo-500);
  line-height: 20px;
}

/* ═══ QUANTITATIVE ANALYSIS SECTION ═══ */
.qa-section {
  padding: var(--spacing-4xl) 0;
}

.qa-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.qa-stat {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: var(--spacing-xl) var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  text-align: center;
}

.qa-stat-value {
  font-size: 48px;
  font-weight: 300;
  color: var(--gray-900);
  letter-spacing: -1.5px;
  line-height: 1;
}

.qa-stat-value--red {
  color: var(--red-500);
}

.qa-stat-label {
  font-size: 14px;
  font-weight: 400;
  color: var(--gray-600);
  line-height: 20px;
  max-width: 220px;
}

.qa-patterns-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 33px;
}

.qa-patterns-title {
  font-size: 20px;
  font-weight: 400;
  color: var(--gray-900);
  margin-bottom: var(--spacing-lg);
}

.qa-patterns-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
}

.qa-col-eyebrow {
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--gray-400);
  margin-bottom: var(--spacing-md);
}

.qa-behaviors-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.qa-behavior-item {
  display: flex;
  gap: var(--spacing-sm);
  font-size: 14px;
  color: var(--gray-700);
  line-height: 20px;
}

.qa-behavior-dot {
  width: 8px;
  height: 8px;
  min-width: 8px;
  border-radius: 50%;
  background: #f0b100;
  margin-top: 6px;
}

.qa-dist-bars {
  display: grid;
  grid-template-columns: auto 1fr auto;
  column-gap: var(--spacing-sm);
  row-gap: 10px;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.qa-dist-row {
  display: contents;
}

.qa-dist-range {
  font-size: 13px;
  color: var(--gray-700);
  font-weight: 400;
  white-space: nowrap;
}

.qa-dist-bar-wrap {
  height: 8px;
  background: var(--gray-100);
  border-radius: 4px;
  overflow: hidden;
  min-width: 0;
}

.qa-dist-bar {
  height: 100%;
  border-radius: 4px;
  transition: width 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.qa-dist-pct {
  font-size: 13px;
  color: var(--gray-700);
  font-weight: 500;
  text-align: left;
  white-space: nowrap;
}

.qa-dist-note {
  font-size: 12px;
  color: var(--gray-400);
  margin-top: var(--spacing-sm);
}

/* ═══ A/B TESTING SECTION ═══ */
.ab-section {
  padding: var(--spacing-4xl) 0;
}

.ab-variants-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.ab-variant {
  border-radius: 14px;
  padding: 33px;
}

.ab-variant--a {
  background: #fff1f2;
  border: 1px solid #fecdd3;
}

.ab-variant--b {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
}

.ab-variant-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: var(--spacing-lg);
}

.ab-variant--a .ab-variant-label { color: var(--red-500); }
.ab-variant--b .ab-variant-label { color: var(--green-500); }

.ab-items-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.ab-item {
  display: flex;
  gap: var(--spacing-sm);
  font-size: 14px;
  line-height: 20px;
  color: var(--gray-700);
}

.ab-item-icon {
  font-weight: 500;
  min-width: 14px;
  margin-top: 1px;
}

.ab-item--pos .ab-item-icon   { color: var(--green-500); }
.ab-item--neg .ab-item-icon   { color: var(--red-500); }
.ab-item--neutral .ab-item-icon { color: var(--gray-400); }

.ab-results-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 33px;
}

.ab-results-title {
  font-size: 20px;
  font-weight: 400;
  color: var(--gray-900);
  margin-bottom: var(--spacing-xl);
}

.ab-metrics-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--gray-100);
}

.ab-metric {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ab-metric-value {
  font-size: 48px;
  font-weight: 300;
  letter-spacing: -1.5px;
  line-height: 1;
}

.ab-metric-value--indigo { color: var(--indigo-500); }
.ab-metric-value--green  { color: var(--green-500); }
.ab-metric-value--amber  { color: #f0b100; }
.ab-metric-value--red    { color: var(--red-500); }

.ab-metric-label {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 18px;
}

.ab-insight {
  font-size: 14px;
  color: var(--gray-700);
  line-height: 22px;
}

/* ═══ TASK ANALYSIS SECTION ═══ */
.ta-section {
  padding: var(--spacing-4xl) 0;
}

.ta-table-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: var(--spacing-xl);
}

.ta-header,
.ta-row {
  display: grid;
  grid-template-columns: 52px 1fr 130px 1fr;
  gap: 0;
  align-items: center;
}

.ta-header {
  padding: 12px 24px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
}

.ta-header span {
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--gray-400);
}

.ta-row {
  padding: 16px 24px;
  border-bottom: 1px solid var(--gray-100);
  transition: background var(--transition);
}

.ta-row:last-child {
  border-bottom: none;
}

.ta-row:hover {
  background: var(--gray-50);
}

.ta-num {
  font-size: 13px;
  color: var(--gray-400);
  font-weight: 400;
}

.ta-subtask {
  font-size: 14px;
  color: var(--gray-900);
  font-weight: 400;
  padding-right: var(--spacing-md);
  line-height: 20px;
}

.ta-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  width: fit-content;
}

.ta-badge--high      { background: #fff1f0; color: #c20009; }
.ta-badge--very-high { background: #ffe4e4; color: #a80000; font-weight: 600; }
.ta-badge--medium    { background: #fffbeb; color: #92400e; }
.ta-badge--low       { background: #f0fdf4; color: #166534; }

.ta-friction {
  font-size: 13px;
  color: var(--gray-600);
  line-height: 18px;
  padding-left: var(--spacing-md);
}

/* Distribution bars in Task Analysis */
.ta-distrib-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 33px;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--spacing-2xl);
  align-items: start;
}

.ta-distrib-title {
  font-size: 18px;
  font-weight: 400;
  color: var(--gray-900);
  margin-bottom: var(--spacing-xl);
}

.ta-distrib-bars {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.ta-distrib-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ta-distrib-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--spacing-sm);
}

.ta-dist-label {
  font-size: 13px;
  color: var(--gray-700);
  line-height: 18px;
}

.ta-dist-pct {
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-700);
  white-space: nowrap;
}

.ta-dist-track {
  height: 8px;
  background: var(--gray-100);
  border-radius: 4px;
  overflow: hidden;
}

.ta-dist-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.ta-distrib-note {
  font-size: 12px;
  color: var(--gray-400);
  margin-top: var(--spacing-md);
}

.ta-insight-callout {
  background: var(--gray-75);
  border-radius: 10px;
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.ta-insight-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--indigo-500);
}

.ta-insight-text {
  font-size: 14px;
  color: var(--gray-700);
  line-height: 22px;
}

/* ═══ TREE TESTING SECTION ═══ */
.tt-section {
  padding: var(--spacing-4xl) 0;
}

.tt-tasks-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.tt-task-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.tt-task-title {
  font-size: 18px;
  font-weight: 400;
  color: var(--gray-900);
  line-height: 26px;
}

.tt-bars {
  margin-top: var(--spacing-sm);
}

.tt-bar-note {
  font-size: 12px;
  color: var(--gray-400);
}

.tt-learning {
  border-top: 1px solid var(--gray-100);
  padding-top: var(--spacing-md);
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.tt-learn-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--gray-400);
}

.tt-learn-text {
  font-size: 13px;
  color: var(--indigo-500);
  line-height: 20px;
}

.tt-decision-card {
  background: var(--indigo-50);
  border: 1px solid var(--indigo-100);
  border-radius: 14px;
  padding: 28px 33px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.tt-decision-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--indigo-600);
}

.tt-decision-text {
  font-size: 14px;
  color: var(--gray-700);
  line-height: 24px;
}

/* ═══ CARD SORTING — Insights variant (OD) ═══ */
.decision-insights {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.insight-row {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: var(--spacing-md);
  align-items: baseline;
}

.insight-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--indigo-500);
  letter-spacing: -0.1px;
}

.insight-text {
  font-size: 14px;
  font-weight: 400;
  color: var(--gray-600);
  line-height: 20px;
}

/* ═══ SOLUTION — Components variant (OD) ═══ */
.components-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

.component-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.component-title {
  font-size: 20px;
  font-weight: 400;
  color: var(--gray-900);
  line-height: 28px;
}

.component-tagline {
  font-size: 14px;
  font-style: italic;
  color: var(--indigo-500);
  line-height: 20px;
}

.component-desc {
  font-size: 14px;
  font-weight: 400;
  color: var(--gray-600);
  line-height: 22.75px;
}

/* ═══ INTERACTIONS (reveal, hover, parallax) ═══ */

/* Reveal-on-scroll: estado inicial oculto, se activa con .is-revealed */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.7s cubic-bezier(0.21, 0.47, 0.32, 0.98),
    transform 0.7s cubic-bezier(0.21, 0.47, 0.32, 0.98);
  will-change: opacity, transform;
}

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

/* Hover states de cards interactivas en páginas de proyecto */
.impact-card,
.persona-card,
.cluster-card,
.research-card,
.insights-card,
.design-item,
.method-card,
.component-card {
  transition:
    transform var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

.method-card:hover,
.component-card:hover {
  transform: translateY(-2px);
  border-color: var(--indigo-200);
  box-shadow: 0 12px 28px -8px rgba(79, 57, 246, 0.10);
}

.impact-card:hover,
.research-card:hover,
.insights-card:hover,
.cluster-card:hover {
  transform: translateY(-2px);
  border-color: var(--indigo-200);
  box-shadow: 0 12px 28px -8px rgba(79, 57, 246, 0.10);
}

.persona-card:hover {
  transform: translateY(-4px);
  border-color: var(--indigo-200);
  box-shadow: 0 16px 32px -10px rgba(79, 57, 246, 0.12);
}

/* Las cards expositivas (problem, solution, results) reciben hover más sutil */
.po-card,
.principles-card,
.decisions-card,
.impact-card-wrap,
.learnings-card,
.nextsteps-card,
.decision-card {
  transition: box-shadow var(--transition), border-color var(--transition);
}

.po-card:hover,
.principles-card:hover,
.decisions-card:hover,
.impact-card-wrap:hover,
.learnings-card:hover,
.nextsteps-card:hover,
.decision-card:hover {
  border-color: var(--gray-300);
  box-shadow: 0 8px 24px -10px rgba(16, 24, 40, 0.06);
}

/* Sub-cards rojas (problem) — leve hover dentro de la card padre */
.product-card {
  transition: transform var(--transition), background-color var(--transition);
}

.product-card:hover {
  transform: translateX(2px);
}

/* Designs: hover sobre la imagen levanta y suaviza la sombra */
.design-image {
  transition:
    transform var(--transition),
    box-shadow var(--transition);
  will-change: transform;
}

.design-item:hover .design-image {
  transform: translateY(-3px);
  box-shadow:
    0 18px 40px -12px rgba(0, 0, 0, 0.18),
    0 4px 6px -4px rgba(0, 0, 0, 0.08);
}

/* Persona avatar hover dentro del card */
.persona-card:hover .persona-avatar {
  transform: scale(1.04);
  transition: transform 0.4s cubic-bezier(0.21, 0.47, 0.32, 0.98);
}

/* Parallax: target translateY se setea via CSS var desde JS */
.hero-image-frame,
.design-image {
  --parallax-y: 0px;
  transform: translate3d(0, var(--parallax-y), 0);
}

/* Cuando el design-image también está en hover, suma transforms */
.design-item:hover .design-image {
  transform: translate3d(0, calc(var(--parallax-y) - 3px), 0);
}

/* Header: sombra sutil cuando se ha scrolleado */
body[data-scrolled="true"] .header-sticky {
  box-shadow: 0 1px 0 rgba(16, 24, 40, 0.04), 0 8px 24px -16px rgba(16, 24, 40, 0.08);
}

.header-sticky {
  transition: box-shadow var(--transition);
}

/* Counters: estabilizar ancho mientras animan para que no salte el layout */
.stat-value,
.impact-metric,
.impact-result-metric {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

/* Respetar prefers-reduced-motion: desactivar todo lo animado */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal.is-revealed,
  .impact-card,
  .persona-card,
  .cluster-card,
  .research-card,
  .insights-card,
  .design-item,
  .po-card,
  .principles-card,
  .decisions-card,
  .impact-card-wrap,
  .learnings-card,
  .nextsteps-card,
  .decision-card,
  .product-card,
  .design-image,
  .hero-image-frame {
    transition: none !important;
    transform: none !important;
    opacity: 1 !important;
    --parallax-y: 0px;
  }
}

/* ═══ RESPONSIVE ═══ */
@media (max-width: 1200px) {
  .hero-project .container,
  .specs-section .container,
  .hero-image-section .container,
  .why-matters .container,
  .problem-objectives .container,
  .ux-research .container,
  .personas-section .container,
  .journey-map-section .container,
  .card-sorting-section .container,
  .solution-section .container,
  .designs-section .container,
  .results-section .container,
  .cta-section .container {
    padding-left: var(--spacing-xl);
    padding-right: var(--spacing-xl);
  }

  .hero-title {
    font-size: 56px;
    letter-spacing: -1.8px;
  }
}

@media (max-width: 960px) {
  .role-stages {
    grid-template-columns: 1fr;
  }
  .role-section .container {
    padding: 0 var(--spacing-xl);
  }

  .hero-main-title {
    font-size: 48px;
    letter-spacing: -1.4px;
  }

  .hero-title {
    font-size: 44px;
    letter-spacing: -1.2px;
  }

  .hero-subtitle-secondary {
    font-size: 24px;
  }

  .hero-project {
    padding: var(--spacing-4xl) 0 var(--spacing-2xl);
  }

  .featured-card-large {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
  }

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

  .specs-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .impact-grid,
  .principles-row,
  .impact-row,
  .clusters-grid {
    grid-template-columns: 1fr;
  }

  .po-grid,
  .research-row,
  .insights-cols,
  .results-bottom,
  .decision-card {
    grid-template-columns: 1fr;
  }

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

  .journey-stages {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }

  .method-cards,
  .components-grid {
    grid-template-columns: 1fr;
  }

  .qa-stats-row {
    grid-template-columns: 1fr;
  }

  .qa-patterns-grid,
  .ab-variants-grid {
    grid-template-columns: 1fr;
  }

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

  .ta-header,
  .ta-row {
    grid-template-columns: 40px 1fr 100px 1fr;
  }

  .ta-distrib-card {
    grid-template-columns: 1fr;
  }

  .tt-tasks-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .role-card {
    padding: var(--spacing-lg);
  }
  .role-title {
    font-size: 22px;
  }
  .design-images-grid--2,
  .design-images-grid--3 {
    grid-template-columns: 1fr;
  }

  .hero-main-title {
    font-size: 36px;
    letter-spacing: -1px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-title {
    font-size: 36px;
    letter-spacing: -1px;
  }

  .hero-subtitle-secondary {
    font-size: 20px;
  }

  .featured-title {
    font-size: 26px;
  }

  .section-header h2 {
    font-size: 28px;
  }

  .nav-main {
    gap: var(--spacing-md);
  }

  .header-container {
    padding: 0 var(--spacing-lg);
    gap: var(--spacing-md);
  }

  .container {
    padding: 0 var(--spacing-lg);
  }

  .brand {
    font-size: 16px;
  }

  @media (max-width: 480px) {
    .brand-full { display: none; }
    .brand-short { display: inline; }
  }

  .lang-option {
    padding: 5px 10px;
    font-size: 11px;
  }

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

  .journey-stages {
    grid-template-columns: 1fr;
  }

  .project-card {
    padding: var(--spacing-lg);
  }

  .po-card,
  .research-card,
  .insights-card,
  .persona-card,
  .cluster-card,
  .decision-card,
  .principles-card,
  .decisions-card,
  .impact-card-wrap,
  .learnings-card,
  .nextsteps-card,
  .journey-card,
  .qa-patterns-card,
  .ab-results-card,
  .ta-distrib-card,
  .tt-task-card,
  .tt-decision-card {
    padding: var(--spacing-lg);
  }

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

  .qa-stat-value,
  .ab-metric-value {
    font-size: 36px;
  }

  .ta-header,
  .ta-row {
    grid-template-columns: 36px 1fr;
    row-gap: 4px;
  }

  .ta-badge,
  .ta-friction {
    grid-column: 2;
    padding-left: 0;
  }

  .tt-tasks-grid {
    grid-template-columns: 1fr;
  }

  .about-title {
    font-size: 36px;
    letter-spacing: -1px;
  }

  .about-section-title {
    font-size: 20px;
  }

  .competencies-grid,
  .about-footer-grid {
    grid-template-columns: 1fr;
  }

  .experience-item {
    grid-template-columns: 1fr;
    gap: var(--spacing-xs);
  }

  .experience-period {
    order: -1;
    font-size: 12px;
  }

  .container-narrow {
    padding: 0 var(--spacing-lg);
  }

  .cta-question {
    font-size: 22px;
  }

  .cta-section .container {
    padding: 0 var(--spacing-lg);
  }
}