/* ==========================================================================
   Gür İnşaat — Design System
   Charcoal / warm white / bronze — quiet luxury, minimal, motion-forward
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@400;500;600&family=Manrope:wght@300;400;500;600;700&display=swap');

:root {
  /* colors */
  --color-charcoal: #17181a;
  --color-charcoal-2: #1f2123;
  --color-warm-white: #f7f4ef;
  --color-warm-white-2: #efeae2;
  --color-bronze: #b08d57;
  --color-bronze-light: #cba876;
  --color-ink: #2a2b2d;
  --color-line: rgba(23, 24, 26, 0.1);
  --color-line-dark: rgba(247, 244, 239, 0.14);

  /* type */
  --font-display: 'Cormorant Garamond', serif;
  --font-body: 'Manrope', sans-serif;

  /* motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-s: 0.4s;
  --dur-m: 0.8s;
  --dur-l: 1.4s;

  --container: 1240px;
  --gutter: clamp(1.25rem, 4vw, 3.5rem);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--color-warm-white);
  color: var(--color-ink);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.1;
  margin: 0;
  letter-spacing: 0.01em;
}

.eyebrow {
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-bronze);
  font-weight: 600;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.95rem 1.9rem;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  cursor: pointer;
  background: transparent;
  transition: background var(--dur-s) var(--ease-out), color var(--dur-s) var(--ease-out), transform var(--dur-s) var(--ease-out);
}
.btn svg { transition: transform var(--dur-s) var(--ease-out); width: 14px; height: 14px; }
.btn:hover svg { transform: translateX(4px); }
.btn-dark { color: var(--color-warm-white); background: var(--color-charcoal); border-color: var(--color-charcoal); }
.btn-dark:hover { background: var(--color-bronze); border-color: var(--color-bronze); color: var(--color-charcoal); }
.btn-light { color: var(--color-charcoal); }
.btn-light:hover { background: var(--color-charcoal); color: var(--color-warm-white); }
.btn-invert { color: var(--color-warm-white); }
.btn-invert:hover { background: var(--color-warm-white); color: var(--color-charcoal); }

/* ---------- header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.4rem 0;
  transition: background var(--dur-m) var(--ease-out), padding var(--dur-m) var(--ease-out), border-color var(--dur-m) var(--ease-out);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  padding: 0.9rem 0;
  background: rgba(23, 24, 26, 0.92);
  backdrop-filter: blur(10px);
  border-color: var(--color-line-dark);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 0.7rem; z-index: 2; }
.brand img { height: 34px; width: auto; transition: opacity var(--dur-s); }
.brand .brand-dark { display: block; }
.brand .brand-light { display: none; }
.site-header.is-scrolled .brand-dark,
.nav-open .brand-dark { display: none; }
.site-header.is-scrolled .brand-light,
.nav-open .brand-light { display: block; }

.main-nav { display: flex; align-items: center; gap: 2.6rem; }
.main-nav a {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--color-warm-white);
  position: relative;
  padding-bottom: 4px;
}
.main-nav a::after {
  content: '';
  position: absolute; left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--color-bronze);
  transition: width var(--dur-s) var(--ease-out);
}
.main-nav a:hover::after, .main-nav a.is-active::after { width: 100%; }
.main-nav a.is-active { color: var(--color-bronze); }

.nav-toggle {
  display: none;
  width: 26px; height: 18px;
  position: relative;
  background: none; border: none; cursor: pointer;
  z-index: 2;
}
.nav-toggle span {
  position: absolute; left: 0; right: 0; height: 1px;
  background: var(--color-warm-white);
  transition: transform var(--dur-s) var(--ease-out), opacity var(--dur-s) var(--ease-out), background var(--dur-s);
}
.nav-toggle span:nth-child(1) { top: 0; }
.nav-toggle span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.nav-toggle span:nth-child(3) { bottom: 0; }

/* ---------- footer ---------- */
.site-footer {
  background: var(--color-charcoal);
  color: var(--color-warm-white);
  padding: 5rem 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--color-line-dark);
}
.footer-brand img { height: 40px; margin-bottom: 1.2rem; }
.footer-brand p { opacity: 0.6; font-size: 0.92rem; line-height: 1.7; max-width: 30ch; }
.footer-col h4 {
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-bronze);
  margin-bottom: 1.1rem;
  font-weight: 600;
}
.footer-col a, .footer-col li {
  display: block;
  font-size: 0.92rem;
  opacity: 0.75;
  margin-bottom: 0.7rem;
  line-height: 1.5;
  transition: opacity var(--dur-s), color var(--dur-s);
}
.footer-col a:hover { opacity: 1; color: var(--color-bronze-light); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.6rem;
  font-size: 0.8rem;
  opacity: 0.5;
  flex-wrap: wrap;
  gap: 0.8rem;
}
.footer-affiliate {
  font-size: 0.8rem;
  opacity: 0.55;
}
.footer-affiliate strong { color: var(--color-bronze-light); opacity: 1; font-weight: 600; }

/* ---------- reveal animation ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 1.1s var(--ease-out), transform 1.1s var(--ease-out);
}
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }
[data-reveal="fade"] { transform: none; }
[data-reveal-delay="1"] { transition-delay: 0.12s; }
[data-reveal-delay="2"] { transition-delay: 0.24s; }
[data-reveal-delay="3"] { transition-delay: 0.36s; }
[data-reveal-delay="4"] { transition-delay: 0.48s; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  color: var(--color-warm-white);
  background: var(--color-charcoal);
  overflow: hidden;
}
.hero-media {
  position: absolute; inset: 0;
  overflow: hidden;
}
.hero-media img {
  width: 100%; height: 100%; object-fit: cover;
  transform: scale(1.12);
  animation: heroPan 22s ease-in-out infinite alternate;
}
@keyframes heroPan {
  0% { transform: scale(1.12) translate(0, 0); }
  100% { transform: scale(1.12) translate(-2.5%, -2%); }
}
.hero-media video {
  width: 100%; height: 100%; object-fit: cover;
  transform: scale(1.16);
  animation: heroPanDown 34s ease-in-out infinite alternate;
}
@keyframes heroPanDown {
  0% { transform: scale(1.16) translateY(-3.2%); }
  100% { transform: scale(1.16) translateY(3.2%); }
}
.hero-media::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(23,24,26,0.55) 0%, rgba(23,24,26,0.25) 35%, rgba(23,24,26,0.85) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  padding-bottom: clamp(6rem, 14vh, 9rem);
  width: 100%;
}
.hero-content .eyebrow { color: var(--color-bronze-light); margin-bottom: 1.2rem; display: inline-block; }
.hero-title {
  font-size: clamp(2.6rem, 6.4vw, 5.6rem);
  max-width: 16ch;
}
.hero-sub {
  margin-top: 1.6rem;
  max-width: 46ch;
  font-size: 1.05rem;
  line-height: 1.7;
  opacity: 0.85;
  font-weight: 300;
}
.hero-actions { margin-top: 2.6rem; display: flex; gap: 1rem; flex-wrap: wrap; }
.scroll-cue {
  position: absolute;
  bottom: 2.2rem; left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex; flex-direction: column; align-items: center;
  gap: 0.6rem;
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.7;
}
.scroll-cue .line {
  width: 1px; height: 40px;
  background: var(--color-line-dark);
  position: relative;
  overflow: hidden;
}
.scroll-cue .line::before {
  content: '';
  position: absolute; top: -100%; left: 0; right: 0; height: 100%;
  background: var(--color-bronze-light);
  animation: scrollLine 2.2s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { top: -100%; }
  50% { top: 0; }
  100% { top: 100%; }
}

/* ---------- sections ---------- */
section { position: relative; }
.section {
  padding: clamp(4.5rem, 9vw, 8.5rem) 0;
}
.section-tight { padding: clamp(3rem, 6vw, 5rem) 0; }
.section-dark { background: var(--color-charcoal); color: var(--color-warm-white); }
.section-tint { background: var(--color-warm-white-2); }

.section-head {
  max-width: 640px;
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
}
.section-head .eyebrow { display: block; margin-bottom: 1rem; }
.section-head h2 { font-size: clamp(2rem, 4vw, 3.1rem); }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

.lede {
  font-size: 1.1rem;
  line-height: 1.85;
  font-weight: 300;
  color: var(--color-ink);
  opacity: 0.85;
}
.section-dark .lede { color: var(--color-warm-white); }

/* ---------- about / split ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: stretch;
}
.split-media {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: 2px;
}
.split-media img {
  width: 100%; height: 112%; object-fit: cover; object-position: top center;
  transition: transform 1.2s var(--ease-out);
}
.split-media:hover img { transform: scale(1.04); }
.split-media .frame {
  position: absolute; inset: 18px;
  border: 1px solid rgba(247,244,239,0.5);
  pointer-events: none;
}
.stat-row { display: flex; gap: clamp(1.5rem, 4vw, 3rem); margin-top: 2.6rem; flex-wrap: wrap; }
.stat b {
  display: block;
  font-family: var(--font-display);
  font-size: 2.4rem;
  color: var(--color-bronze);
  font-weight: 500;
}
.stat span {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  opacity: 0.65;
  text-transform: uppercase;
}

/* ---------- values grid ---------- */
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-line);
  border: 1px solid var(--color-line);
}
.section-dark .value-grid { background: var(--color-line-dark); border-color: var(--color-line-dark); }
.value-card {
  background: var(--color-warm-white);
  padding: clamp(1.8rem, 3vw, 2.8rem);
}
.section-dark .value-card { background: var(--color-charcoal); }
.value-card .num {
  font-family: var(--font-display);
  color: var(--color-bronze);
  font-size: 1.3rem;
  margin-bottom: 1.2rem;
  display: block;
}
.value-card h3 { font-size: 1.4rem; margin-bottom: 0.7rem; }
.value-card p { font-size: 0.94rem; line-height: 1.7; opacity: 0.75; font-weight: 300; margin: 0; }

/* ---------- project cards ---------- */
.project-list { display: flex; flex-direction: column; gap: clamp(2.5rem, 5vw, 4rem); }
.project-card {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: clamp(1.8rem, 4vw, 3.5rem);
  align-items: center;
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
  border-bottom: 1px solid var(--color-line);
}
.project-list .project-card:last-child { border-bottom: none; padding-bottom: 0; }
.project-card:nth-child(even) { direction: rtl; }
.project-card:nth-child(even) > * { direction: ltr; }
.project-media {
  position: relative;
  aspect-ratio: 5 / 4;
  overflow: hidden;
  border-radius: 2px;
}
.project-media img {
  width: 100%; height: 116%; object-fit: cover; object-position: top center;
  transition: transform 1s var(--ease-out);
}
.project-card:hover .project-media img { transform: scale(1.05); }
.project-status {
  position: absolute; top: 1.2rem; left: 1.2rem;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.5rem 0.9rem;
  background: rgba(23,24,26,0.75);
  color: var(--color-warm-white);
  backdrop-filter: blur(6px);
  font-weight: 600;
}
.project-status.status-active { color: var(--color-charcoal); background: var(--color-bronze-light); }
.project-info .eyebrow { display: block; margin-bottom: 0.9rem; }
.project-info h3 { font-size: clamp(1.8rem, 3vw, 2.6rem); margin-bottom: 1rem; }
.project-info p { font-size: 1rem; line-height: 1.75; opacity: 0.78; font-weight: 300; margin-bottom: 1.6rem; max-width: 46ch; }
.project-meta { display: flex; gap: 2rem; margin-bottom: 1.8rem; flex-wrap: wrap; }
.project-meta div span { display: block; font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; opacity: 0.55; margin-bottom: 0.3rem; }
.project-meta div b { font-family: var(--font-display); font-size: 1.3rem; font-weight: 500; }

/* ---------- gallery (project detail) ---------- */
.room-filters {
  display: flex; flex-wrap: wrap; gap: 0.6rem;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}
.room-filters button {
  background: none;
  border: 1px solid var(--color-line);
  padding: 0.6rem 1.2rem;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  color: var(--color-ink);
  transition: all var(--dur-s) var(--ease-out);
  font-weight: 600;
}
.room-filters button:hover { border-color: var(--color-bronze); color: var(--color-bronze); }
.room-filters button.is-active { background: var(--color-charcoal); border-color: var(--color-charcoal); color: var(--color-warm-white); }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(0.8rem, 2vw, 1.4rem);
}
.gallery-item {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  cursor: pointer;
  border-radius: 2px;
  background: var(--color-charcoal-2);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}
.gallery-item.is-hidden { display: none; }
.gallery-item .crop {
  position: absolute;
  left: 0; top: 0; right: 0;
  height: 109%;
  overflow: hidden;
}
.gallery-item img {
  width: 100%; height: 100%; object-fit: cover; object-position: center 8%;
  transition: transform 0.7s var(--ease-out);
}
.gallery-item:hover img { transform: scale(1.08); }
.gallery-item .room-tag {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 1.6rem 1rem 0.9rem;
  background: linear-gradient(180deg, transparent, rgba(23,24,26,0.82));
  color: var(--color-warm-white);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--dur-s), transform var(--dur-s);
}
.gallery-item:hover .room-tag { opacity: 1; transform: translateY(0); }

/* lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 300;
  background: rgba(17,18,20,0.96);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity var(--dur-s) var(--ease-out);
}
.lightbox.is-open { opacity: 1; pointer-events: auto; }
.lightbox figure {
  max-width: min(88vw, 1100px);
  max-height: 84vh;
  margin: 0;
  position: relative;
  overflow: hidden;
}
.lightbox img { max-height: 84vh; width: auto; height: auto; object-fit: contain; }
.lightbox figcaption {
  color: var(--color-warm-white);
  text-align: center;
  margin-top: 1rem;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.7;
}
.lightbox-close, .lightbox-nav {
  position: absolute;
  background: none; border: none;
  color: var(--color-warm-white);
  cursor: pointer;
  opacity: 0.75;
  transition: opacity var(--dur-s);
}
.lightbox-close:hover, .lightbox-nav:hover { opacity: 1; }
.lightbox-close { top: -2.6rem; right: 0; font-size: 1.6rem; line-height: 1; }
.lightbox-nav { top: 50%; transform: translateY(-50%); font-size: 2rem; }
.lightbox-prev { left: -3.2rem; }
.lightbox-next { right: -3.2rem; }

/* ---------- address block ---------- */
.address-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: clamp(2rem, 4vw, 3rem);
  background: var(--color-charcoal);
  color: var(--color-warm-white);
}
.address-block .field span { display: block; font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-bronze-light); margin-bottom: 0.5rem; }
.address-block .field p { margin: 0; font-size: 1.05rem; line-height: 1.6; font-weight: 300; }

/* ---------- contact page ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
}
.contact-card {
  border: 1px solid var(--color-line);
  padding: clamp(1.8rem, 3vw, 2.6rem);
}
.contact-card h3 { font-size: 1.5rem; margin-bottom: 1.4rem; }
.contact-line { display: flex; align-items: baseline; gap: 0.8rem; margin-bottom: 1rem; font-size: 1.05rem; }
.contact-line span.label { font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; opacity: 0.5; min-width: 6ch; }

/* ---------- coming soon ---------- */
.coming-soon-panel {
  border: 1px dashed var(--color-line-dark);
  padding: clamp(2rem, 4vw, 3.5rem);
  text-align: center;
  background: rgba(176,141,87,0.06);
}

/* ---------- page hero (inner pages) ---------- */
.page-hero {
  padding: clamp(9rem, 16vw, 12rem) 0 clamp(3rem, 6vw, 4rem);
  background: var(--color-charcoal);
  color: var(--color-warm-white);
}
.page-hero .eyebrow { display: block; margin-bottom: 1rem; }
.page-hero h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); max-width: 20ch; }
.page-hero p { margin-top: 1.2rem; max-width: 50ch; opacity: 0.75; font-weight: 300; line-height: 1.7; }
.breadcrumb { display: flex; gap: 0.5rem; align-items: center; font-size: 0.78rem; opacity: 0.55; margin-bottom: 1.4rem; letter-spacing: 0.04em; }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .split, .project-card { grid-template-columns: 1fr; }
  .project-card:nth-child(even) { direction: ltr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .value-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .main-nav { position: fixed; inset: 0; background: var(--color-charcoal); flex-direction: column; justify-content: center; gap: 2.2rem; transform: translateX(100%); transition: transform var(--dur-m) var(--ease-in-out); }
  .nav-open .main-nav { transform: translateX(0); }
  .main-nav a { color: var(--color-warm-white) !important; font-size: 1.1rem; }
  .nav-toggle { display: block; }
  .nav-open .nav-toggle span:nth-child(1) { transform: translateY(8.5px) rotate(45deg); }
  .nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  .nav-open .nav-toggle span:nth-child(3) { transform: translateY(-8.5px) rotate(-45deg); }
  .footer-grid { grid-template-columns: 1fr; gap: 2.2rem; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .address-block { grid-template-columns: 1fr; }
  .lightbox-nav { display: none; }
}

@media (max-width: 560px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-row { gap: 1.4rem; }
  .project-meta { gap: 1.2rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-media img, .hero-media video { animation: none !important; transform: none !important; }
  .scroll-cue .line::before { animation: none !important; }
  [data-reveal] { transition: none !important; opacity: 1 !important; transform: none !important; }
}