/* =================================================================
   ATELIER JATOBA — v2
   Minimal architecture-studio aesthetic
   Inspired by atelier-monts-et-merveilles.com
   ================================================================= */

:root {
  --bg:          #FCFBF9;   /* near-white, faint warmth */
  --bg-alt:      #F4F1EC;   /* soft sand for alternating bands */
  --ink:         #1C1815;   /* near-black, warm */
  --ink-soft:    #4A443D;   /* secondary text */
  --muted:       #9A9088;   /* labels, captions */
  --line:        #E4DFD7;   /* hairline borders */
  --accent:      #8A6F52;   /* restrained warm taupe — used sparingly */
  --dark:        #1C1815;   /* dark sections */

  --sans:        'Jost', -apple-system, BlinkMacSystemFont, sans-serif;
  --wrap:        1440px;
  --wrap-narrow: 900px;
  --pad:         clamp(1.5rem, 5vw, 5rem);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
}
img { display: block; width: 100%; height: 100%; object-fit: cover; }
a { color: inherit; text-decoration: none; }

.wrap        { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--pad); }
.wrap-narrow { max-width: var(--wrap-narrow); margin-inline: auto; padding-inline: var(--pad); }

/* ── Reveal animation ─────────────────────────── */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.9s ease, transform 0.9s ease; }
.reveal.visible { opacity: 1; transform: none; }
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* ── Shared type helpers ──────────────────────── */
.eyebrow {
  font-size: 0.66rem; font-weight: 400;
  letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--accent);
}
.label {
  font-size: 0.64rem; font-weight: 400;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--muted);
}


/* =================================================================
   HEADER
   ================================================================= */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  padding-block: 1.6rem;
  transition: background 0.4s ease, padding 0.4s ease, border-color 0.4s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(252, 251, 249, 0.92);
  backdrop-filter: blur(10px);
  padding-block: 1.1rem;
  border-bottom-color: var(--line);
}
/* On pages without a dark hero, header always has light bg */
.site-header.solid {
  background: var(--bg);
  border-bottom-color: var(--line);
}

.header-inner {
  max-width: var(--wrap); margin-inline: auto; padding-inline: var(--pad);
  display: flex; align-items: center; justify-content: space-between;
}

.brand {
  font-size: 0.95rem; font-weight: 400;
  letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--ink); white-space: nowrap;
}
.brand span { color: var(--accent); }

/* Hero-overlay header: white text until scrolled */
.site-header.over-hero:not(.scrolled) .brand,
.site-header.over-hero:not(.scrolled) .brand span,
.site-header.over-hero:not(.scrolled) .main-nav a,
.site-header.over-hero:not(.scrolled) .lang .on,
.site-header.over-hero:not(.scrolled) .lang { color: #FFF; }
.site-header.over-hero:not(.scrolled) .burger span { background: #FFF; }
/* Legibility against bright photos */
.site-header.over-hero:not(.scrolled) .brand,
.site-header.over-hero:not(.scrolled) .main-nav a { text-shadow: 0 1px 12px rgba(0,0,0,0.45); }

.nav-cluster { display: flex; align-items: center; gap: 2.5rem; }
.main-nav ul { display: flex; gap: 2.25rem; list-style: none; }
.main-nav a {
  font-size: 0.7rem; font-weight: 400;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-soft); transition: color 0.25s; position: relative;
}
.main-nav a::after {
  content: ''; position: absolute; left: 0; bottom: -5px;
  width: 0; height: 1px; background: currentColor; transition: width 0.3s ease;
}
.main-nav a:hover::after, .main-nav a.active::after { width: 100%; }
.main-nav a.active { color: var(--accent); }

.lang {
  font-size: 0.66rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--muted); display: flex; gap: 0.4rem; align-items: center;
}
.lang .on { color: var(--ink); }
.lang .off { opacity: 0.5; cursor: default; }
.lang .sep { opacity: 0.4; }

.burger {
  display: none; flex-direction: column; gap: 6px;
  background: none; border: none; cursor: pointer; padding: 4px; z-index: 210;
}
.burger span { display: block; width: 26px; height: 1.5px; background: var(--ink); transition: transform 0.35s, opacity 0.35s; }

/* Mobile overlay menu */
.mobile-menu {
  position: fixed; inset: 0; z-index: 205;
  background: var(--bg);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2rem; opacity: 0; pointer-events: none; transition: opacity 0.4s ease;
}
.mobile-menu.open { opacity: 1; pointer-events: auto; }
.mobile-menu a {
  font-size: 1.4rem; font-weight: 300; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink);
}
.mobile-menu a.active { color: var(--accent); }

.body--menu-open { overflow: hidden; }
.burger.is-open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

@media (max-width: 880px) {
  .main-nav, .lang { display: none; }
  .burger { display: flex; }
}


/* =================================================================
   HERO (full-bleed image)
   ================================================================= */
.hero {
  position: relative; height: 100vh; min-height: 600px;
  display: flex; align-items: flex-end;
  overflow: hidden;
}
.hero-img { position: absolute; inset: 0; }
.hero-img img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.05); animation: heroZoom 14s ease-out forwards; }
@keyframes heroZoom { to { transform: scale(1); } }
.hero::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(28,24,21,0.62) 0%, rgba(28,24,21,0.08) 42%, rgba(28,24,21,0.18) 80%, rgba(28,24,21,0.45) 100%);
}
.hero-content {
  position: relative; z-index: 2; width: 100%;
  padding-bottom: clamp(3rem, 7vw, 6rem);
  color: #FFF;
}
.hero-eyebrow { color: rgba(255,255,255,0.85); margin-bottom: 1.5rem; }
.hero-title {
  font-size: clamp(2.6rem, 6.5vw, 5.5rem);
  font-weight: 300; line-height: 1.05; letter-spacing: -0.01em;
  max-width: 16ch;
}
.hero-sub {
  margin-top: 1.75rem; font-size: clamp(0.95rem, 1.4vw, 1.1rem);
  font-weight: 300; color: rgba(255,255,255,0.82); max-width: 46ch; line-height: 1.8;
}
.hero-scroll {
  position: absolute; left: 50%; bottom: 2rem; transform: translateX(-50%);
  z-index: 2; color: rgba(255,255,255,0.7);
  font-size: 0.6rem; letter-spacing: 0.22em; text-transform: uppercase;
  display: flex; flex-direction: column; align-items: center; gap: 0.6rem;
}
.hero-scroll::after {
  content: ''; width: 1px; height: 36px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.7), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse { 0%,100% { opacity: 0.3; } 50% { opacity: 1; } }


/* =================================================================
   SECTION SCAFFOLD
   ================================================================= */
.section { padding-block: clamp(4.5rem, 10vw, 9rem); }
.section--tight { padding-block: clamp(3rem, 6vw, 5rem); }
.section--dark { background: var(--dark); color: var(--bg); }
.section--alt  { background: var(--bg-alt); }

.section-head {
  display: flex; justify-content: space-between; align-items: flex-end;
  gap: 2rem; flex-wrap: wrap; margin-bottom: clamp(2.5rem, 5vw, 4rem);
}
.section-title {
  font-size: clamp(1.9rem, 3.6vw, 3rem);
  font-weight: 300; line-height: 1.1; letter-spacing: -0.005em;
}
.section-title em { font-style: italic; color: var(--accent); }

.text-link {
  font-size: 0.68rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink); display: inline-flex; align-items: center; gap: 0.6rem;
  transition: gap 0.25s, color 0.25s;
}
.text-link::after { content: '→'; transition: transform 0.25s; }
.text-link:hover { color: var(--accent); }
.text-link:hover::after { transform: translateX(4px); }
.section--dark .text-link { color: #FFF; }


/* =================================================================
   PROJECT GRID
   ================================================================= */
.proj-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.5rem, 4vw, 3.5rem) clamp(1.5rem, 3vw, 2.5rem);
}
.proj {
  display: block; cursor: pointer; position: relative;
}
.proj-frame {
  position: relative; overflow: hidden; background: var(--bg-alt);
  aspect-ratio: 4 / 3;
}
.proj--portrait .proj-frame { aspect-ratio: 3 / 4; }
.proj--wide .proj-frame { aspect-ratio: 16 / 10; }
.proj-frame img {
  transition: transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}
.proj:hover .proj-frame img { transform: scale(1.04); }
.proj-frame::after {
  content: ''; position: absolute; inset: 0;
  background: rgba(28,24,21,0); transition: background 0.5s;
}
.proj:hover .proj-frame::after { background: rgba(28,24,21,0.08); }

.proj-meta { margin-top: 1.1rem; }
.proj-title {
  font-size: clamp(1.1rem, 1.8vw, 1.45rem); font-weight: 300;
  line-height: 1.25; transition: color 0.25s;
}
.proj:hover .proj-title { color: var(--accent); }
.proj-cat {
  margin-top: 0.4rem;
  font-size: 0.62rem; font-weight: 400;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted);
}

/* Make some grid items span full width for rhythm */
.proj--full { grid-column: 1 / -1; }
.proj--full .proj-frame { aspect-ratio: 21 / 9; }

@media (max-width: 720px) {
  .proj-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .proj--full .proj-frame { aspect-ratio: 4 / 3; }
}


/* =================================================================
   SPLIT (image + text)
   ================================================================= */
.split {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 6vw, 6rem); align-items: center;
}
.split--reverse .split-text { order: 2; }
.split-img { overflow: hidden; aspect-ratio: 4 / 5; }
.split-img.landscape { aspect-ratio: 5 / 4; }
.split-body { font-size: 0.98rem; line-height: 1.95; color: var(--ink-soft); }
.split-body p + p { margin-top: 1.2rem; }
.section--dark .split-body { color: rgba(252,251,249,0.72); }
.split-title {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem); font-weight: 300;
  line-height: 1.15; margin-bottom: 1.5rem;
}
.split-title em { font-style: italic; color: var(--accent); }
.section--dark .split-title { color: var(--bg); }
.section--dark .split-title em { color: #C7AD8C; }

@media (max-width: 820px) {
  .split { grid-template-columns: 1fr; gap: 2.5rem; }
  .split--reverse .split-text { order: 0; }
}


/* =================================================================
   CAPABILITIES STRIP
   ================================================================= */
.caps { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.cap { padding: 2.5rem 1.75rem 0; border-right: 1px solid var(--line); }
.cap:last-child { border-right: none; }
.cap-num { font-size: 0.62rem; letter-spacing: 0.2em; color: var(--accent); margin-bottom: 1rem; }
.cap-title { font-size: 1.25rem; font-weight: 300; margin-bottom: 0.6rem; }
.cap-desc { font-size: 0.85rem; line-height: 1.75; color: var(--muted); }
@media (max-width: 820px) {
  .caps { grid-template-columns: repeat(2, 1fr); }
  .cap:nth-child(2) { border-right: none; }
  .cap:nth-child(n+3) { border-top: 1px solid var(--line); }
}
@media (max-width: 480px) {
  .caps { grid-template-columns: 1fr; }
  .cap { border-right: none; border-top: 1px solid var(--line); }
  .cap:first-child { border-top: none; }
}


/* =================================================================
   BIG QUOTE
   ================================================================= */
.bigquote { text-align: center; }
.bigquote p {
  font-size: clamp(1.5rem, 3.2vw, 2.6rem); font-weight: 300;
  line-height: 1.4; max-width: 22ch; margin-inline: auto;
}
.bigquote em { font-style: italic; color: #C7AD8C; }
.bigquote .attr { margin-top: 2rem; }


/* =================================================================
   CONTACT
   ================================================================= */
.contact-grid {
  display: grid; grid-template-columns: 1.3fr 1fr;
  gap: clamp(2.5rem, 6vw, 6rem); align-items: start;
}
@media (max-width: 880px) { .contact-grid { grid-template-columns: 1fr; } }

.field { margin-bottom: 2rem; }
.field label {
  display: block; font-size: 0.62rem; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 0.6rem;
}
.field input, .field select, .field textarea {
  width: 100%; background: transparent; border: none;
  border-bottom: 1px solid var(--line); padding: 0.7rem 0;
  font-family: var(--sans); font-size: 1rem; font-weight: 300;
  color: var(--ink); outline: none; transition: border-color 0.3s; border-radius: 0;
  appearance: none;
}
.field input:focus, .field select:focus, .field textarea:focus { border-bottom-color: var(--accent); }
.field textarea { resize: vertical; min-height: 130px; line-height: 1.7; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
@media (max-width: 480px) { .field-row { grid-template-columns: 1fr; } }

.btn {
  display: inline-block; padding: 1rem 2.8rem;
  background: var(--ink); color: var(--bg);
  border: 1px solid var(--ink);
  font-family: var(--sans); font-size: 0.68rem; font-weight: 400;
  letter-spacing: 0.2em; text-transform: uppercase; cursor: pointer;
  transition: background 0.3s, color 0.3s;
}
.btn:hover { background: transparent; color: var(--ink); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--bg); }
.btn--light { background: #FFF; color: var(--ink); border-color: #FFF; }
.btn--light:hover { background: transparent; color: #FFF; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.contact-block { padding-bottom: 1.75rem; margin-bottom: 1.75rem; border-bottom: 1px solid var(--line); }
.contact-block:last-child { border-bottom: none; }
.contact-block .val { font-size: 1.15rem; font-weight: 300; }
.contact-block .val a:hover { color: var(--accent); }
.contact-block .note { font-size: 0.82rem; color: var(--muted); margin-top: 0.4rem; line-height: 1.7; }

.form-feedback {
  display: none; margin-top: 1.5rem; padding: 1rem 1.25rem;
  border-left: 2px solid var(--accent); background: rgba(138,111,82,0.06);
  font-size: 0.88rem; color: var(--ink-soft);
}
.form-feedback.show { display: block; }
.form-feedback--err { border-color: #B5462E; background: rgba(181,70,46,0.05); }


/* =================================================================
   PAGE HEADER (interior pages)
   ================================================================= */
.page-head { padding-top: clamp(8rem, 14vw, 12rem); padding-bottom: clamp(2.5rem, 5vw, 4rem); }
.page-head .eyebrow { margin-bottom: 1.5rem; }
.page-head h1 {
  font-size: clamp(2.8rem, 7vw, 6rem); font-weight: 300;
  line-height: 1.0; letter-spacing: -0.01em;
}
.page-head h1 em { font-style: italic; color: var(--accent); }
.page-head .lead {
  margin-top: 1.75rem; font-size: clamp(1rem, 1.5vw, 1.2rem);
  font-weight: 300; color: var(--ink-soft); max-width: 52ch; line-height: 1.8;
}


/* =================================================================
   FOOTER
   ================================================================= */
.site-footer { background: var(--dark); color: var(--bg); padding-block: clamp(3.5rem, 7vw, 6rem); }
.footer-top {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 3rem;
  padding-bottom: 3rem; border-bottom: 1px solid rgba(252,251,249,0.12);
}
.footer-brand { font-size: 1.4rem; font-weight: 300; letter-spacing: 0.28em; text-transform: uppercase; }
.footer-brand span { color: #C7AD8C; }
.footer-tag { margin-top: 1.25rem; font-size: 0.9rem; color: rgba(252,251,249,0.6); max-width: 34ch; line-height: 1.8; }
.footer-col h4 { font-size: 0.62rem; letter-spacing: 0.2em; text-transform: uppercase; color: #C7AD8C; margin-bottom: 1.25rem; }
.footer-col a, .footer-col p { display: block; font-size: 0.9rem; color: rgba(252,251,249,0.7); margin-bottom: 0.7rem; transition: color 0.25s; }
.footer-col a:hover { color: #FFF; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 1rem; padding-top: 2rem;
}
.footer-bottom p { font-size: 0.7rem; letter-spacing: 0.08em; color: rgba(252,251,249,0.45); }
.footer-social { display: flex; gap: 1.5rem; }
.footer-social a { font-size: 0.66rem; letter-spacing: 0.16em; text-transform: uppercase; color: rgba(252,251,249,0.7); transition: color 0.25s; }
.footer-social a:hover { color: #FFF; }
@media (max-width: 760px) {
  .footer-top { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}


/* =================================================================
   LIGHTBOX
   ================================================================= */
.lightbox {
  display: none; position: fixed; inset: 0; z-index: 999;
  background: rgba(20,17,15,0.96); align-items: center; justify-content: center; padding: 2rem;
}
.lightbox.open { display: flex; }
.lb-inner { position: relative; max-width: 1000px; width: 100%; }
.lb-img { width: 100%; max-height: 80vh; object-fit: contain; }
.lb-close {
  position: absolute; top: -2.6rem; right: 0; background: none; border: none; cursor: pointer;
  color: rgba(252,251,249,0.7); font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase;
}
.lb-close:hover { color: #FFF; }
.lb-cap { margin-top: 1.1rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; }
.lb-cap .t { font-size: 1.3rem; font-weight: 300; color: var(--bg); }
.lb-cap .c { font-size: 0.64rem; letter-spacing: 0.2em; text-transform: uppercase; color: #C7AD8C; }
.lb-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer; color: rgba(252,251,249,0.6);
  font-size: 1.6rem; padding: 1rem; transition: color 0.25s;
}
.lb-nav:hover { color: #FFF; }
.lb-prev { left: -3.5rem; } .lb-next { right: -3.5rem; }
@media (max-width: 760px) { .lb-prev { left: -0.5rem; } .lb-next { right: -0.5rem; } }