/* ============================================================
   HUELLA CERO — Design System
   Premium sustainability consulting website
   ============================================================ */

/* --- Custom Properties --- */
:root {
  /* Colors */
  --green-deep: #0B402C;
  --green-deep-rgb: 11, 64, 44;
  --green-lime: #81BF24;
  --green-lime-rgb: 129, 191, 36;
  --green-secondary: #71A621;
  --gray-light: #F2F2F2;
  --gray-light-rgb: 242, 242, 242;
  --white: #FFFFFF;
  --black-soft: #1A1A1A;
  --black-soft-rgb: 26, 26, 26;

  /* Gradients */
  --gradient-brand: linear-gradient(135deg, var(--green-lime), var(--green-secondary));
  --gradient-dark: linear-gradient(180deg, var(--green-deep) 0%, #072A1C 100%);
  --gradient-hero: linear-gradient(135deg, rgba(11,64,44,0.92) 0%, rgba(7,42,28,0.88) 100%);

  /* Typography */
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;

  /* Layout */
  --container-max: 1280px;
  --container-narrow: 900px;
  --nav-height: 80px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 0.2s;
  --duration-normal: 0.4s;
  --duration-slow: 0.8s;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.1);
  --shadow-lg: 0 16px 64px rgba(0,0,0,0.14);
  --shadow-glow: 0 0 40px rgba(129,191,36,0.15);
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: auto;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--black-soft);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; }

/* --- Utility --- */
.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 1.5rem; }
.container--narrow { max-width: var(--container-narrow); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); font-weight: 700; line-height: 1.1; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.8rem, 6vw, 5.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); }
h3 { font-size: clamp(1.4rem, 2.5vw, 2rem); }
h4 { font-size: clamp(1.1rem, 1.5vw, 1.4rem); }

.kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--green-lime);
  display: block;
  margin-bottom: 1rem;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 0.5rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: 100px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
}

.btn--primary {
  background: var(--green-lime);
  color: var(--green-deep);
}
.btn--primary:hover {
  background: #92D430;
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn--outline {
  border: 1.5px solid rgba(255,255,255,0.3);
  color: var(--white);
}
.btn--outline:hover {
  border-color: var(--green-lime);
  color: var(--green-lime);
}

.btn--dark {
  background: var(--green-deep);
  color: var(--white);
}
.btn--dark:hover {
  background: #0D4D34;
  transform: translateY(-2px);
}

.btn--ghost {
  color: var(--green-lime);
  padding: 0.5rem 0;
}
.btn--ghost:hover { opacity: 0.8; }
.btn--ghost::after {
  content: '→';
  transition: transform var(--duration-fast) var(--ease-out);
}
.btn--ghost:hover::after { transform: translateX(4px); }

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  padding: 0 2rem;
  transition: all var(--duration-normal) var(--ease-out);
}

.nav--transparent {
  background: transparent;
}

.nav--scrolled {
  background: rgba(11, 64, 44, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.2);
  border-bottom: 3px solid;
  border-image: linear-gradient(90deg, var(--green-lime), var(--green-secondary), var(--green-deep)) 1;
}

.nav__inner {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav__logo-img {
  height: 56px;
  width: auto;
  filter: brightness(0) invert(1) drop-shadow(0 2px 8px rgba(0,0,0,0.3));
}

.nav--scrolled .nav__logo-img {
  filter: brightness(0) invert(1);
}

.nav__logo-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--white);
  letter-spacing: -0.01em;
}

.quienes__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.quienes__text h2 {
  margin-bottom: 1.5rem;
}

.quienes__text p {
  color: #666;
  margin-bottom: 1rem;
  line-height: 1.7;
}

@media (max-width: 768px) {
  .quienes__grid { grid-template-columns: 1fr; gap: 2rem; }
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__link {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  color: rgba(255,255,255,0.7);
  transition: color var(--duration-fast);
  position: relative;
}

.nav__link:hover { color: var(--white); }

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--green-lime);
  transition: width var(--duration-normal) var(--ease-out);
}

.nav__link:hover::after { width: 100%; }

.nav__cta {
  margin-left: 0.5rem;
}

/* Mobile nav */
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 1001;
}

.nav__burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: all var(--duration-normal) var(--ease-out);
  transform-origin: center;
}

.nav__burger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.active span:nth-child(2) { opacity: 0; }
.nav__burger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav__mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--green-deep);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.nav__mobile.active {
  opacity: 1;
  pointer-events: all;
}

.nav__mobile a {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--white);
  transition: color var(--duration-fast);
}

.nav__mobile a:hover { color: var(--green-lime); }

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--green-deep);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
  filter: saturate(0.8);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11,64,44,0.82) 0%, rgba(0,0,0,0.55) 100%);
  z-index: 1;
}

.hero__mesh {
  position: absolute;
  inset: 0;
  z-index: 2;
  opacity: 0.08;
  background-image:
    radial-gradient(circle at 20% 50%, var(--green-lime) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(129,191,36,0.3) 0%, transparent 40%),
    radial-gradient(circle at 60% 80%, rgba(113,166,33,0.2) 0%, transparent 40%);
}

.hero__content {
  position: relative;
  z-index: 3;
  max-width: 800px;
  padding: calc(var(--nav-height) + 2rem) 0;
}

.hero__tagline {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green-lime);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.hero__tagline::before {
  content: '';
  width: 40px;
  height: 1px;
  background: var(--green-lime);
}

.hero h1 {
  color: var(--white);
  margin-bottom: 1.5rem;
}

.hero h1 em {
  font-style: normal;
  color: var(--green-lime);
}

.hero__subtitle {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: rgba(255,255,255,0.7);
  max-width: 600px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero__ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255,255,255,0.4);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--green-lime), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

.hero__secondary-img {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 45%;
  height: 60%;
  z-index: 2;
  border-radius: 20px 0 0 0;
  overflow: hidden;
  opacity: 0.25;
  mask-image: linear-gradient(to left, rgba(0,0,0,0.6), transparent);
  -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,0.6), transparent);
}

.hero__secondary-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --- Sections General --- */
.section {
  padding: var(--space-3xl) 0;
  position: relative;
}

.section--dark {
  background: var(--green-deep);
  color: var(--white);
}

.section--light {
  background: var(--gray-light);
}

.section--quienes {
  background: linear-gradient(160deg, #0B402C 0%, #0D4D34 50%, #0a3825 100%);
  color: var(--white);
}

.section__header {
  margin-bottom: var(--space-xl);
}

.section__header h2 { margin-bottom: 1rem; }
.section__header p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.6);
  max-width: 600px;
}

.section__header--center {
  text-align: center;
}

.section__header--center p {
  margin: 0 auto;
}

/* --- Desafío Section --- */
.desafio {
  overflow: hidden;
}

.desafio__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.desafio__visual {
  position: relative;
  height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.desafio__interactive {
  position: relative;
  width: 400px;
  height: 400px;
}

.desafio__center-node {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--green-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  box-shadow: 0 0 40px rgba(11,64,44,0.3);
}

.desafio__center-node span {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--green-lime);
  text-transform: uppercase;
}

.desafio__center-ring {
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  border: 1.5px solid rgba(129,191,36,0.2);
  animation: ringPulse 3s ease-in-out infinite;
}

@keyframes ringPulse {
  0%, 100% { transform: scale(1); opacity: 0.3; }
  50% { transform: scale(1.15); opacity: 0.6; }
}

.desafio__orbital {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100px;
  margin-left: -50px;
  margin-top: -20px;
  transform-origin: 50% 20px;
  transform: rotate(var(--angle)) translateY(-160px) rotate(calc(-1 * var(--angle)));
  text-align: center;
  z-index: 2;
  animation: orbitalAppear 0.6s var(--ease-out) var(--delay) both;
}

@keyframes orbitalAppear {
  from { opacity: 0; transform: rotate(var(--angle)) translateY(-80px) rotate(calc(-1 * var(--angle))) scale(0.5); }
  to { opacity: 1; transform: rotate(var(--angle)) translateY(-160px) rotate(calc(-1 * var(--angle))) scale(1); }
}

.desafio__orbital span {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.9rem;
  border-radius: 0;
  background: transparent;
  border: none;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--green-deep);
  white-space: nowrap;
  transition: all var(--duration-normal) var(--ease-out);
  cursor: default;
}

.desafio__orbital span .desafio__icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: transparent;
  color: var(--green-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  transition: all var(--duration-normal) var(--ease-out);
}

.desafio__orbital:hover span {
  color: var(--green-lime);
  transform: scale(1.15);
}

.desafio__orbital:hover .desafio__icon {
  color: var(--green-lime);
}

.desafio__connections {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.desafio__connections line {
  stroke: var(--green-deep);
  stroke-width: 1.8;
  opacity: 0.55;
  stroke-dasharray: 8 5;
  animation: dashFlow 15s linear infinite;
}

@keyframes dashFlow {
  to { stroke-dashoffset: -100; }
}

.desafio__connections circle {
  fill: var(--green-lime);
  r: 0;
}

.desafio__node {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--green-lime);
  box-shadow: 0 0 20px rgba(129,191,36,0.4);
}

.desafio__line {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, var(--green-lime), transparent);
  transform-origin: left center;
}

.desafio__text h2 {
  margin-bottom: 1.5rem;
  color: var(--black-soft);
}

.desafio__text p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #555;
  margin-bottom: 1rem;
}

/* --- 7 Áreas / Servicios --- */
.areas {
  counter-reset: area-counter;
}

.areas__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 1px;
  background: rgba(255,255,255,0.05);
}

.area-card {
  position: relative;
  padding: 2.5rem;
  background: rgba(11, 64, 44, 0.25);
  border: none;
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
  overflow: hidden;
  border-bottom: 2px solid rgba(129,191,36,0.3);
}

.area-card__bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11,64,44,0.75) 0%, rgba(7,42,28,0.65) 100%);
  z-index: 0;
  transition: background var(--duration-normal) var(--ease-out);
}

.area-card:hover .area-card__bg-overlay {
  background: linear-gradient(135deg, rgba(11,64,44,0.6) 0%, rgba(7,42,28,0.55) 100%);
}

.area-card > *:not(.area-card__bg-overlay) {
  position: relative;
  z-index: 1;
}

.area-card::before {
  counter-increment: area-counter;
  content: '0' counter(area-counter);
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: rgba(255,255,255,0.2);
  letter-spacing: 0.1em;
}

.area-card:hover {
  background: rgba(129, 191, 36, 0.08);
  border-color: rgba(129,191,36,0.2);
}

.area-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(129,191,36,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--green-lime);
  font-size: 1.4rem;
  transition: all var(--duration-normal) var(--ease-out);
}

.area-card:hover .area-card__icon {
  background: var(--green-lime);
  color: var(--green-deep);
}

.area-card h3 {
  color: var(--white);
  margin-bottom: 0.75rem;
  font-size: 1.3rem;
}

.area-card p {
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.area-card__services {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-slow) var(--ease-out);
}

.area-card.active .area-card__services,
.area-card:hover .area-card__services {
  max-height: 400px;
}

.area-card__services ul {
  padding-top: 1rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.area-card__services li {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
  padding: 0.35rem 0;
  padding-left: 1rem;
  position: relative;
}

.area-card__services li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--green-lime);
  opacity: 0.5;
  transform: translateY(-50%);
}

/* --- Proceso Section --- */
.proceso__timeline {
  display: flex;
  gap: 0;
  position: relative;
  padding: 2rem 0;
}

.proceso__step {
  flex: 1;
  text-align: center;
  padding: 2rem 1rem;
  position: relative;
}

.proceso__step::after {
  content: '';
  position: absolute;
  top: 2.5rem;
  right: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--green-lime), rgba(129,191,36,0.2));
}

.proceso__step:last-child::after { display: none; }

.proceso__number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--green-deep);
  color: var(--green-lime);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  position: relative;
  z-index: 1;
  border: 2px solid var(--green-lime);
}

.proceso__step h4 {
  margin-bottom: 0.5rem;
  color: var(--black-soft);
}

.proceso__step p {
  font-size: 0.85rem;
  color: #777;
}

/* --- Diagnóstico Interactivo --- */
.diagnostico {
  background: var(--green-deep);
  position: relative;
  overflow: hidden;
}

.diagnostico::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(129,191,36,0.08), transparent 70%);
}

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

.diagnostico__step {
  display: none;
}

.diagnostico__step.active {
  display: block;
  animation: fadeUp 0.5s var(--ease-out);
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.diagnostico__options {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 0.75rem;
  margin-top: 2rem;
}

.diagnostico__option {
  padding: 1rem 1.25rem;
  border: 1.5px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  font-weight: 500;
  text-align: center;
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
  background: rgba(255,255,255,0.03);
}

.diagnostico__option:hover,
.diagnostico__option.selected {
  border-color: var(--green-lime);
  color: var(--green-lime);
  background: rgba(129,191,36,0.08);
}

.diagnostico__textarea {
  width: 100%;
  min-height: 120px;
  padding: 1.25rem;
  border: 1.5px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  background: rgba(255,255,255,0.03);
  color: var(--white);
  font-size: 0.95rem;
  resize: vertical;
  margin-top: 1.5rem;
  transition: border-color var(--duration-fast);
}

.diagnostico__textarea:focus {
  outline: none;
  border-color: var(--green-lime);
}

.diagnostico__textarea::placeholder {
  color: rgba(255,255,255,0.3);
}

.diagnostico__result {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(129,191,36,0.2);
  border-radius: 16px;
  padding: 2rem;
  margin-top: 2rem;
}

.diagnostico__result h3 {
  color: var(--green-lime);
  margin-bottom: 1rem;
}

.diagnostico__result p {
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.diagnostico__disclaimer {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.3);
  font-style: italic;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.diagnostico__nav {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

/* --- Impacto / Counters --- */
.impacto__cards {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.impacto__card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  height: 320px;
  background: #0a3825;
}

.impacto__card-img {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.impacto__card-img img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.impacto__card-img::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to top, rgba(11,64,44,0.92) 0%, rgba(11,64,44,0.4) 50%, rgba(11,64,44,0.1) 100%);
}

.impacto__card-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.25rem;
  z-index: 2;
}

.impacto__number {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 700;
  color: var(--green-lime);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.impacto__label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: rgba(255,255,255,0.55);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

/* --- Proyectos / Portfolio --- */
.proyectos__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.proyecto-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 16/10;
  background: var(--green-deep);
  cursor: pointer;
  group: true;
}

.proyecto-card__img {
  position: absolute;
  inset: 0;
}

.proyecto-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.proyecto-card:hover .proyecto-card__img img {
  transform: scale(1.05);
}

.proyecto-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11,64,44,0.95) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2rem;
}

.proyecto-card__tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--green-lime);
  margin-bottom: 0.5rem;
}

.proyecto-card h3 {
  color: var(--white);
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.proyecto-card p {
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
}

/* --- Testimonios --- */
.testimonios__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.testimonio-card {
  padding: 2rem;
  background: var(--white);
  border-radius: 16px;
  border: 1px solid rgba(0,0,0,0.06);
  position: relative;
}

.testimonio-card::before {
  content: '"';
  font-family: var(--font-heading);
  font-size: 4rem;
  color: var(--green-lime);
  opacity: 0.3;
  position: absolute;
  top: 1rem;
  left: 1.5rem;
  line-height: 1;
}

.testimonio-card p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: #555;
  margin-bottom: 1.5rem;
  padding-top: 1.5rem;
  font-style: italic;
}

.testimonio-card__author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.testimonio-card__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--green-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green-lime);
  font-weight: 700;
  font-size: 0.85rem;
}

.testimonio-card__name {
  font-weight: 600;
  font-size: 0.85rem;
}

.testimonio-card__role {
  font-size: 0.75rem;
  color: #999;
}

/* --- Conocimiento --- */
.conocimiento__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.conocimiento-card {
  padding: 2rem;
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: 16px;
  transition: all var(--duration-normal) var(--ease-out);
}

.conocimiento-card:hover {
  border-color: var(--green-lime);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.conocimiento-card__tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--green-secondary);
  margin-bottom: 0.75rem;
}

.conocimiento-card h4 {
  margin-bottom: 0.75rem;
}

.conocimiento-card p {
  font-size: 0.9rem;
  color: #666;
  line-height: 1.6;
}

/* --- FAQ --- */
.faq__list {
  max-width: 800px;
  margin: 0 auto;
}

.faq__item {
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.faq__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 0;
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  text-align: left;
  transition: color var(--duration-fast);
}

.faq__question:hover { color: var(--green-lime); }

.faq__icon {
  font-size: 1.5rem;
  color: var(--green-lime);
  transition: transform var(--duration-normal) var(--ease-out);
  flex-shrink: 0;
  margin-left: 1rem;
}

.faq__item.active .faq__icon { transform: rotate(45deg); }

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-slow) var(--ease-out);
}

.faq__item.active .faq__answer { max-height: 300px; }

.faq__answer p {
  padding-bottom: 1.5rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* --- Contacto --- */
.contacto__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.contacto__info h2 { margin-bottom: 1rem; }
.contacto__info > p {
  font-size: 1.05rem;
  color: #555;
  line-height: 1.7;
  margin-bottom: 2rem;
}

.contacto__details {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contacto__detail {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.95rem;
  color: #555;
}

.contacto__detail-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green-deep);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contacto__form {
  background: var(--gray-light);
  border-radius: 20px;
  padding: 2.5rem;
}

.form__group {
  margin-bottom: 1.25rem;
}

.form__label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: #555;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: 0.875rem 1.25rem;
  border: 1.5px solid rgba(0,0,0,0.08);
  border-radius: 12px;
  background: var(--white);
  font-size: 0.95rem;
  color: var(--black-soft);
  transition: border-color var(--duration-fast);
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--green-lime);
}

.form__textarea {
  min-height: 100px;
  resize: vertical;
}

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

.form__success {
  display: none;
  text-align: center;
  padding: 3rem 2rem;
}

.form__success.show { display: block; }

.form__success-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(129,191,36,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 1.8rem;
}

/* --- Footer --- */
.footer {
  background: #072A1C;
  color: rgba(255,255,255,0.5);
  padding: var(--space-xl) 0 var(--space-lg);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer__brand h3 {
  color: var(--white);
  margin-bottom: 1rem;
}

.footer__brand p {
  font-size: 0.85rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.footer__social {
  display: flex;
  gap: 0.75rem;
}

.footer__social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: rgba(255,255,255,0.5);
  transition: all var(--duration-fast);
}

.footer__social a:hover {
  border-color: var(--green-lime);
  color: var(--green-lime);
}

.footer__col h4 {
  color: var(--white);
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.footer__col li { margin-bottom: 0.6rem; }

.footer__col a {
  font-size: 0.85rem;
  transition: color var(--duration-fast);
}

.footer__col a:hover { color: var(--green-lime); }

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
}

/* --- Chatbot --- */
.chatbot__trigger {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--green-lime);
  color: var(--green-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  z-index: 900;
  box-shadow: 0 8px 32px rgba(129,191,36,0.3);
  transition: all var(--duration-normal) var(--ease-out);
}

.chatbot__trigger:hover {
  transform: scale(1.1);
  box-shadow: 0 12px 40px rgba(129,191,36,0.4);
}

.chatbot__window {
  position: fixed;
  bottom: 6rem;
  right: 2rem;
  width: 380px;
  max-height: 520px;
  background: var(--white);
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  z-index: 901;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px) scale(0.95);
  transition: all var(--duration-normal) var(--ease-out);
}

.chatbot__window.active {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0) scale(1);
}

.chatbot__header {
  padding: 1.25rem 1.5rem;
  background: var(--green-deep);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chatbot__header h4 {
  font-size: 0.95rem;
  color: var(--white);
}

.chatbot__status {
  font-size: 0.7rem;
  color: var(--green-lime);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.chatbot__status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green-lime);
}

.chatbot__messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-height: 340px;
}

.chatbot__msg {
  max-width: 85%;
  padding: 0.875rem 1.25rem;
  border-radius: 16px;
  font-size: 0.85rem;
  line-height: 1.5;
}

.chatbot__msg--bot {
  align-self: flex-start;
  background: var(--gray-light);
  color: var(--black-soft);
  border-bottom-left-radius: 4px;
}

.chatbot__msg--user {
  align-self: flex-end;
  background: var(--green-deep);
  color: var(--white);
  border-bottom-right-radius: 4px;
}

.chatbot__quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0 1.5rem 1rem;
}

.chatbot__quick-btn {
  padding: 0.5rem 1rem;
  border-radius: 100px;
  border: 1px solid rgba(11,64,44,0.15);
  font-size: 0.75rem;
  color: var(--green-deep);
  transition: all var(--duration-fast);
}

.chatbot__quick-btn:hover {
  background: var(--green-deep);
  color: var(--white);
  border-color: var(--green-deep);
}

.chatbot__quick-btn--whatsapp {
  background: #25D366;
  color: var(--white);
  border-color: #25D366;
  font-weight: 600;
}

.chatbot__quick-btn--whatsapp:hover {
  background: #128C7E;
  border-color: #128C7E;
  color: var(--white);
}

.chatbot__input-area {
  padding: 1rem 1.5rem;
  border-top: 1px solid rgba(0,0,0,0.06);
  display: flex;
  gap: 0.5rem;
}

.chatbot__input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1.5px solid rgba(0,0,0,0.08);
  border-radius: 100px;
  font-size: 0.85rem;
}

.chatbot__input:focus {
  outline: none;
  border-color: var(--green-lime);
}

.chatbot__send {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--green-lime);
  color: var(--green-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-fast);
}

.chatbot__send:hover {
  background: #92D430;
}

/* --- Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .desafio__grid { grid-template-columns: 1fr; }
  .desafio__visual { height: 300px; }
  .proceso__timeline { flex-direction: column; gap: 1rem; }
  .proceso__step::after { display: none; }
  .proyectos__grid { grid-template-columns: 1fr; }
  .contacto__grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --nav-height: 64px; }

  .nav__links { display: none; }
  .nav__burger { display: flex; }
  .nav__mobile { display: flex; }

  .hero { min-height: 100svh; }
  .hero__content { padding-top: calc(var(--nav-height) + 3rem); }

  .section { padding: var(--space-2xl) 0; }

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

  .impacto__cards { grid-template-columns: repeat(2, 1fr); }
  .impacto__card { height: 260px; }

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

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

  .footer__grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer__bottom { flex-direction: column; gap: 1rem; text-align: center; }

  .chatbot__window {
    width: calc(100vw - 2rem);
    right: 1rem;
    bottom: 5rem;
  }

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

@media (max-width: 480px) {
  .hero__ctas { flex-direction: column; }
  .hero__ctas .btn { width: 100%; justify-content: center; }
  .impacto__cards { grid-template-columns: 1fr; }
  .impacto__card { height: 280px; }
  .diagnostico__options { grid-template-columns: 1fr; }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .hero__scroll-line { animation: none; }
}