/* =========================================================
   Grupo Verde Chile — onepage
   Paleta inspirada en el sitio original (#a6b093 verde-grisáceo)
   Tipografías: Inter (UI) + Cardo (acento serif)
   ========================================================= */

:root {
  --green-900: #2f3e2c;
  --green-700: #4a6b3f;
  --green-500: #6b8b5b;
  --green-400: #a6b093;
  --green-100: #eef1e8;
  --cream: #f7f6f1;
  --ink: #1a1f17;
  --ink-soft: #4a4f48;
  --line: #e3e6dd;
  --white: #ffffff;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 28px;

  --shadow-sm: 0 4px 14px rgba(47, 62, 44, 0.08);
  --shadow-md: 0 12px 32px rgba(47, 62, 44, 0.12);

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-serif: "Cardo", Georgia, "Times New Roman", serif;

  --max-w: 1180px;
  --header-h: 76px;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  display: block;
  height: auto;
}

a {
  color: var(--green-700);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--green-900);
}

h1, h2, h3, h4 {
  margin: 0 0 0.5em;
  line-height: 1.2;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: -0.01em;
}

h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  letter-spacing: -0.02em;
}

h1 em {
  font-style: italic;
  color: var(--green-700);
}

h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
}

h3 {
  font-size: 1.2rem;
}

p {
  margin: 0 0 1em;
  color: var(--ink-soft);
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: clamp(64px, 9vw, 120px) 0;
}

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

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green-700);
  margin: 0 0 12px;
}

.eyebrow-light {
  color: var(--green-400);
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  background: var(--green-900);
  color: #fff;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  z-index: 200;
}
.skip-link:focus {
  left: 12px;
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.site-header.scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 2px 12px rgba(47, 62, 44, 0.06);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-weight: 600;
}

.brand-logo {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  letter-spacing: 0.01em;
  display: flex;
  gap: 4px;
  white-space: nowrap;
}

.brand-accent {
  color: var(--green-700);
  font-style: italic;
}

.primary-nav ul {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.primary-nav a {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--ink);
}

.primary-nav a:hover {
  background: var(--green-100);
  color: var(--green-900);
}

.primary-nav .nav-cta {
  background: var(--green-700);
  color: #fff;
  padding: 10px 18px;
  margin-left: 8px;
}

.primary-nav .nav-cta:hover {
  background: var(--green-900);
}

/* burger */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
  display: none;
  background: var(--white);
  border-top: 1px solid var(--line);
  padding: 12px 0;
}

.mobile-nav.open {
  display: block;
}

.mobile-nav ul {
  list-style: none;
  margin: 0;
  padding: 0 24px;
  display: grid;
  gap: 4px;
}

.mobile-nav a {
  display: block;
  padding: 12px 8px;
  color: var(--ink);
  font-weight: 500;
  border-radius: var(--radius-sm);
}

.mobile-nav a:hover {
  background: var(--green-100);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 60px) 0 80px;
  overflow: hidden;
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(80% 60% at 80% 10%, rgba(166, 176, 147, 0.55), transparent 60%),
    radial-gradient(60% 50% at 10% 90%, rgba(107, 139, 91, 0.35), transparent 60%),
    linear-gradient(180deg, var(--cream) 0%, #ffffff 60%);
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(47, 62, 44, 0.07) 1px, transparent 0);
  background-size: 24px 24px;
  mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
  opacity: 0.6;
}

.hero-inner {
  max-width: 880px;
}

.hero h1 {
  margin: 0 0 24px;
}

.hero-lead {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--ink-soft);
  max-width: 640px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.hero-scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 22px;
  height: 38px;
  border: 2px solid var(--green-700);
  border-radius: 999px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.hero-scroll span {
  width: 3px;
  height: 8px;
  background: var(--green-700);
  border-radius: 2px;
  animation: scrollDot 1.6s ease-in-out infinite;
}

@keyframes scrollDot {
  0%   { transform: translateY(0);    opacity: 1; }
  60%  { transform: translateY(10px); opacity: 0; }
  100% { transform: translateY(0);    opacity: 0; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.2s ease, color 0.2s ease,
    box-shadow 0.2s ease, border-color 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--green-700);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--green-900);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  color: var(--green-900);
  border-color: var(--green-400);
}

.btn-ghost:hover {
  background: var(--green-100);
  color: var(--green-900);
}

.btn-block {
  width: 100%;
}

/* ---------- Two-column intro ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(32px, 6vw, 80px);
  align-items: start;
}

.two-col-tight {
  grid-template-columns: 1fr 1fr;
  align-items: center;
}

.two-col h2 {
  margin: 0;
}

/* ---------- Servicios cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px;
  text-align: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--green-400);
}

.card-img {
  width: 140px;
  height: 140px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--green-100);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

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

.card h3 {
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.95rem;
  color: var(--green-900);
  margin-bottom: 10px;
}

.card p {
  margin: 0;
  font-size: 0.95rem;
}

/* ---------- Líneas de trabajo ---------- */
.lineas {
  display: grid;
  gap: clamp(48px, 7vw, 96px);
}

.linea {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: clamp(28px, 5vw, 64px);
}

.linea-reverse {
  direction: rtl;
}

.linea-reverse > * {
  direction: ltr;
}

.linea-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--green-100);
  aspect-ratio: 4 / 5;
  display: flex;
  align-items: center;
  justify-content: center;
}

.linea-img img {
  width: 75%;
  height: auto;
  object-fit: contain;
}

.linea-body h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  margin-bottom: 16px;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  font-weight: 600;
  color: var(--green-700);
  margin-top: 8px;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

.link-arrow:hover {
  color: var(--green-900);
  border-bottom-color: var(--green-900);
}

/* ---------- Proyectos ---------- */
.projects {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--ink);
  position: relative;
  aspect-ratio: 4 / 5;
  isolation: isolate;
  cursor: pointer;
}

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

.project-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.project-placeholder {
  background: linear-gradient(135deg, var(--green-700) 0%, var(--green-900) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-placeholder span {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.18);
  letter-spacing: 0.1em;
}

.project::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0, 0, 0, 0.75) 100%);
  z-index: 0;
}

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

.project-body {
  position: absolute;
  inset: auto 0 0 0;
  padding: 24px;
  color: #fff;
  z-index: 1;
}

.project-body h3 {
  color: #fff;
  margin: 0 0 4px;
  font-size: 1.15rem;
}

.project-body p {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.85rem;
  margin: 0;
}

/* ---------- CTA + form ---------- */
.cta {
  background: linear-gradient(135deg, var(--green-900) 0%, var(--green-700) 100%);
  color: #fff;
  padding: clamp(72px, 10vw, 130px) 0;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.07) 1px, transparent 0);
  background-size: 24px 24px;
  pointer-events: none;
}

.cta-inner {
  max-width: 720px;
  text-align: center;
  position: relative;
}

.cta h2 {
  color: #fff;
  margin-bottom: 18px;
}

.cta-lead {
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 40px;
  font-size: 1.05rem;
}

/* Botones dentro del CTA oscuro: invertimos el contraste para que destaquen
   sobre el gradiente verde-900 → verde-700. */
.cta .hero-actions {
  justify-content: center;
  margin-top: 8px;
}

.cta .btn-primary {
  background: #fff;
  color: var(--green-900);
}

.cta .btn-primary:hover {
  background: var(--green-100);
  color: var(--green-900);
}

.cta .btn-ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
}

.cta .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

/* ---------- Footer ---------- */
.site-footer {
  background: #0f1410;
  color: rgba(255, 255, 255, 0.75);
  padding-top: 64px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 2fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.footer-brand .brand-logo {
  width: 48px;
  height: 48px;
  filter: brightness(0) invert(1);
  opacity: 0.85;
}

.footer-brand p {
  margin: 0;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.95rem;
}

.footer-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.footer-cols h4 {
  color: #fff;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin: 0 0 14px;
}

.footer-cols ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.footer-cols a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
}

.footer-cols a:hover {
  color: var(--green-400);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.85rem;
  text-align: center;
}

/* ---------- Reveal-on-scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  will-change: transform, opacity;
}

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

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-scroll span { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .primary-nav { display: none; }
  .nav-toggle { display: inline-flex; }

  .two-col,
  .two-col-tight {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  .linea,
  .linea-reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }

  .linea-img { aspect-ratio: 16 / 11; }
  .linea-img img { width: 50%; }

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

  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 600px) {
  .hero { min-height: auto; padding-top: calc(var(--header-h) + 40px); }
  .hero-actions { width: 100%; }
  .hero-actions .btn { flex: 1; }

  .projects { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr; gap: 24px; }
}