/* ==========================================================
   Ecotiv — Design System
   Editorial / eco-luxury / B2B
   ========================================================== */

:root {
  /* Color */
  --color-bg: #F7F4EE;
  --color-bg-elevated: #FFFFFF;
  --color-ink: #1A2622;
  --color-ink-muted: #4F5B55;
  --color-line: #E2DDD2;
  --color-primary: #1F4F3A;        /* deep forest */
  --color-primary-hover: #163A2A;
  --color-accent: #B8895A;          /* clay / earth */
  --color-warm: #E8DFCB;

  /* Type */
  --font-display: 'Fraunces', 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Inter', -apple-system, system-ui, sans-serif;

  /* Layout */
  --container: 1240px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --radius: 4px;
  --radius-lg: 12px;

  /* Motion */
  --ease: cubic-bezier(.4, 0, .2, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ---------- Type ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.1;
  margin: 0 0 0.5em;
  color: var(--color-ink);
}
h1 { font-size: clamp(2.5rem, 6vw, 4.75rem); font-weight: 300; }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.4rem, 2vw, 1.75rem); }
h4 { font-size: 1.1rem; font-weight: 500; font-family: var(--font-body); letter-spacing: 0.04em; text-transform: uppercase; color: var(--color-ink-muted); }

p { margin: 0 0 1em; max-width: 65ch; }
.lead { font-size: 1.2rem; line-height: 1.55; color: var(--color-ink-muted); max-width: 60ch; }
.eyebrow {
  font-size: 0.78rem; letter-spacing: 0.18em; text-transform: uppercase;
  font-weight: 500; color: var(--color-primary); margin-bottom: 1.5rem; display: inline-block;
}

/* ---------- Layout ---------- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: clamp(4rem, 9vw, 7rem) 0; }
.section--tight { padding: clamp(2.5rem, 5vw, 4rem) 0; }
.divider { height: 1px; background: var(--color-line); border: 0; margin: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.95rem 1.75rem;
  font-size: 0.95rem; font-weight: 500;
  border-radius: 999px;
  transition: all 0.25s var(--ease);
  border: 1px solid transparent;
}
.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-hover); transform: translateY(-1px); }
.btn--ghost { border-color: var(--color-ink); color: var(--color-ink); }
.btn--ghost:hover { background: var(--color-ink); color: var(--color-bg); }
.btn--light { background: rgba(255,255,255,0.95); color: var(--color-ink); }
.btn--light:hover { background: #fff; }

.btn .arrow { transition: transform 0.25s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(247, 244, 238, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.1rem 0;
}
.logo {
  display: inline-flex; align-items: center; gap: 0.6rem;
  text-decoration: none;
}
.logo img {
  height: 38px; width: auto; display: block;
}
.site-footer .logo img { height: 44px; filter: brightness(0) invert(1); opacity: 0.95; }
.nav-links { display: flex; gap: 2.25rem; align-items: center; list-style: none; padding: 0; margin: 0; }
.nav-links a {
  font-size: 0.92rem; font-weight: 500;
  color: var(--color-ink-muted); transition: color 0.2s var(--ease);
  position: relative;
}
.nav-links a:hover, .nav-links a.is-active { color: var(--color-ink); }
.nav-links a.is-active::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -22px;
  height: 2px; background: var(--color-primary);
}
.nav .btn { padding: 0.6rem 1.2rem; font-size: 0.88rem; }

@media (max-width: 720px) {
  .nav-links { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex; align-items: flex-end;
  overflow: hidden;
  color: #fff;
}
.hero__bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  z-index: 0;
}
.hero__bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(26,38,34,0.15) 0%, rgba(26,38,34,0.75) 100%);
}
.hero__content {
  position: relative; z-index: 1;
  padding: 0 0 6rem;
  max-width: 900px;
}
.hero h1 { color: #fff; margin-bottom: 1.5rem; }
.hero .lead { color: rgba(255,255,255,0.88); font-size: clamp(1.05rem, 1.6vw, 1.35rem); max-width: 580px; margin-bottom: 2.5rem; }
.hero .eyebrow { color: #E8DFCB; }
.hero__actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero__meta {
  position: absolute; bottom: 2rem; right: var(--gutter);
  z-index: 1;
  text-align: right;
  font-size: 0.78rem; letter-spacing: 0.15em; text-transform: uppercase;
  color: rgba(255,255,255,0.7);
}

/* ---------- Intro / Two-col ---------- */
.intro {
  display: grid; grid-template-columns: 1fr 1.4fr;
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
}
.intro__title { font-size: clamp(1.8rem, 3vw, 2.5rem); }
.intro__body p { font-size: 1.1rem; line-height: 1.7; color: var(--color-ink-muted); }
@media (max-width: 800px) { .intro { grid-template-columns: 1fr; } }

/* ---------- Services ---------- */
.services {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--color-line);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.service {
  background: var(--color-bg);
  padding: 2.5rem 2rem;
  display: flex; flex-direction: column;
  transition: background 0.3s var(--ease);
  position: relative;
}
.service:hover { background: var(--color-bg-elevated); }
.service__num {
  font-family: var(--font-display);
  font-size: 0.95rem; color: var(--color-accent);
  margin-bottom: 1.5rem; letter-spacing: 0.05em;
}
.service h3 { margin-bottom: 0.85rem; font-size: 1.5rem; }
.service p { color: var(--color-ink-muted); font-size: 0.97rem; line-height: 1.6; flex: 1; }
.service__more {
  margin-top: 1.5rem; font-size: 0.85rem; font-weight: 500;
  color: var(--color-primary); letter-spacing: 0.04em;
  display: inline-flex; align-items: center; gap: 0.4rem;
}

/* ---------- Featured project / Image+text alternating ---------- */
.feature {
  display: grid; grid-template-columns: 1.3fr 1fr;
  gap: clamp(2rem, 5vw, 5rem); align-items: center;
}
.feature--reverse { grid-template-columns: 1fr 1.3fr; }
.feature--reverse .feature__media { order: 2; }
.feature__media img {
  width: 100%; height: 540px; object-fit: cover;
  border-radius: var(--radius-lg);
}
.feature__body h2 { margin-bottom: 1rem; }
@media (max-width: 900px) {
  .feature, .feature--reverse { grid-template-columns: 1fr; }
  .feature--reverse .feature__media { order: 0; }
  .feature__media img { height: 360px; }
}

/* ---------- Stats strip ---------- */
.stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
  padding: 3rem 0;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}
.stat__num {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4vw, 3.2rem);
  font-weight: 300;
  color: var(--color-primary);
  line-height: 1;
}
.stat__label {
  font-size: 0.85rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-ink-muted); margin-top: 0.5rem;
}

/* ---------- Partners ---------- */
.partners {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px;
  background: var(--color-line);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.partner {
  background: var(--color-bg);
  text-align: center;
  padding: 2.5rem 1.5rem 1.5rem;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 1rem;
  transition: background 0.3s var(--ease);
}
.partner:hover { background: var(--color-bg-elevated); }
.partner__logo {
  height: 50px; max-width: 140px;
  display: flex; align-items: center; justify-content: center;
}
.partner__logo img {
  max-height: 100%; max-width: 100%;
  object-fit: contain;
  filter: grayscale(100%) opacity(0.65);
  transition: filter 0.3s var(--ease);
}
.partner:hover .partner__logo img { filter: grayscale(0%) opacity(1); }
.partner__name {
  font-family: var(--font-display); font-size: 1rem;
  color: var(--color-ink); margin: 0;
}
.partner__role { font-size: 0.7rem; color: var(--color-ink-muted); letter-spacing: 0.06em; text-transform: uppercase; margin-top: 0.15rem; }

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: clamp(3rem, 6vw, 5rem);
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 3rem; align-items: center;
}
.cta-band h2 { color: #fff; margin-bottom: 0; }
.cta-band p { color: rgba(255,255,255,0.85); margin: 1rem 0 0; }
.cta-band .btn--light { justify-self: end; }
@media (max-width: 800px) {
  .cta-band { grid-template-columns: 1fr; }
  .cta-band .btn--light { justify-self: start; }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-ink);
  color: rgba(255,255,255,0.7);
  padding: 5rem 0 2rem;
  margin-top: 4rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 3rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-grid h4 { color: rgba(255,255,255,0.5); }
.site-footer .logo { color: #fff; font-size: 1.8rem; margin-bottom: 1rem; }
.site-footer .logo::before { background: var(--color-warm); }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { padding: 0.3rem 0; font-size: 0.92rem; }
.footer-grid a:hover { color: #fff; }
.offices { font-size: 0.92rem; line-height: 1.9; }
.footer-bottom {
  display: flex; justify-content: space-between;
  padding-top: 2rem; font-size: 0.82rem; color: rgba(255,255,255,0.45);
}
@media (max-width: 800px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ---------- Gallery ---------- */
.page-header {
  padding: clamp(5rem, 10vw, 8rem) 0 clamp(2.5rem, 5vw, 4rem);
  border-bottom: 1px solid var(--color-line);
}
.page-header h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
.gallery-section { padding: clamp(3rem, 6vw, 5rem) 0; }
.gallery-section h2 { margin-bottom: 0.5rem; }
.gallery-section .eyebrow { color: var(--color-accent); }

.masonry {
  column-count: 3;
  column-gap: 1.25rem;
  margin-top: 2.5rem;
}
.masonry img {
  width: 100%; margin-bottom: 1.25rem;
  border-radius: var(--radius);
  break-inside: avoid;
  transition: transform 0.4s var(--ease);
}
.masonry img:hover { transform: scale(1.01); }
@media (max-width: 900px) { .masonry { column-count: 2; } }
@media (max-width: 560px) { .masonry { column-count: 1; } }

.coming-soon-tag {
  display: inline-block; padding: 0.3rem 0.85rem;
  background: var(--color-warm); color: var(--color-primary);
  border-radius: 999px; font-size: 0.75rem; letter-spacing: 0.1em;
  text-transform: uppercase; font-weight: 500;
  margin-bottom: 1rem;
}

/* ---------- IR / Product page ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.product {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--color-line);
  transition: all 0.3s var(--ease);
}
.product:hover { transform: translateY(-3px); box-shadow: 0 20px 40px -20px rgba(26,38,34,0.18); }
.product__name {
  font-family: var(--font-display); font-size: 1.5rem;
  color: var(--color-primary); margin-bottom: 0.75rem;
}
.product__warranty {
  display: inline-block; font-size: 0.72rem; letter-spacing: 0.1em;
  text-transform: uppercase; padding: 0.25rem 0.7rem;
  background: var(--color-warm); color: var(--color-primary);
  border-radius: 999px; margin-bottom: 1rem;
}
.product p { font-size: 0.95rem; color: var(--color-ink-muted); }

.benefits {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem; margin-top: 3rem;
}
.benefit__icon {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--color-warm); color: var(--color-primary);
  display: grid; place-items: center; font-size: 1.4rem;
  margin-bottom: 1rem;
}
.benefit h4 { color: var(--color-ink); text-transform: none; letter-spacing: 0; font-size: 1.1rem; margin-bottom: 0.5rem; font-family: var(--font-display); font-weight: 500; }
.benefit p { font-size: 0.93rem; color: var(--color-ink-muted); margin: 0; }

/* ---------- Utilities ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-lg { margin-bottom: 3rem; }