/* ============================================
   TEKSER MOBİLYA - Design System CSS
   Based on Stitch Design Tokens
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;500;600;700&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Primary Colors */
  --anthracite: #2C2C2C;
  --anthracite-light: #3a3a3a;
  --warm-wood: #A67C52;
  --warm-wood-light: #c4a07a;
  --brushed-gold: #D4AF37;
  --gold-gradient-end: #B8962E;
  --gold-pale: rgba(212, 175, 55, 0.08);

  /* Surface & Background */
  --surface: #F9F9F9;
  --surface-white: #FFFFFF;
  --surface-dim: #dadada;
  --surface-container: #eeeeee;
  --on-surface: #1a1c1c;
  --on-surface-variant: #444748;
  --outline: #747878;
  --outline-variant: #c4c7c7;

  /* Typography */
  --font-main: 'Montserrat', sans-serif;

  /* Spacing */
  --container-max: 1280px;
  --gutter: 32px;
  --section-padding: 120px;
  --margin-mobile: 20px;

  /* Shadows & Effects */
  --shadow-hover: 0px 20px 40px rgba(0, 0, 0, 0.05);
  --border-subtle: 1px solid rgba(44, 44, 44, 0.1);
  --gold-glow: 0 0 20px rgba(212, 175, 55, 0.3);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  background: var(--surface);
  color: var(--on-surface);
  overflow-x: hidden;
  line-height: 1.6;
}

/* ===== TYPOGRAPHY ===== */
.display-lg {
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
}
.headline-lg {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.headline-md {
  font-size: clamp(20px, 2.5vw, 24px);
  font-weight: 600;
  line-height: 1.33;
}
.body-lg {
  font-size: 18px;
  font-weight: 400;
  line-height: 1.56;
}
.body-md {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
}
.label-caps {
  font-size: 12px;
  font-weight: 700;
  line-height: 1.33;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ===== CONTAINER ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  background: transparent;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.navbar.scrolled {
  background: rgba(44, 44, 44, 0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}
.navbar.scrolled .nav-logo { color: #fff; }
.navbar.scrolled .nav-link { color: rgba(255,255,255,0.7); }
.navbar.scrolled .nav-link:hover,
.navbar.scrolled .nav-link.active { color: var(--brushed-gold); }
.navbar.scrolled .nav-phone { border-color: var(--brushed-gold); color: var(--brushed-gold); }

.nav-logo {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--anthracite);
  text-decoration: none;
  transition: color 0.3s;
  white-space: nowrap;
}
.nav-logo span { color: var(--brushed-gold); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}
.nav-link {
  display: block;
  padding: 8px 16px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--anthracite);
  text-decoration: none;
  position: relative;
  transition: color 0.3s;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  right: 50%;
  height: 2px;
  background: linear-gradient(to right, var(--brushed-gold), var(--gold-gradient-end));
  transition: all 0.3s ease;
}
.nav-link:hover::after,
.nav-link.active::after {
  left: 16px;
  right: 16px;
}
.nav-link:hover,
.nav-link.active { color: var(--brushed-gold); }

.nav-phone {
  padding: 10px 20px;
  border: 1.5px solid var(--anthracite);
  background: transparent;
  color: var(--anthracite);
  font-family: var(--font-main);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-decoration: none;
  border-radius: 4px;
  transition: all 0.3s;
  white-space: nowrap;
}
.nav-phone:hover {
  background: var(--brushed-gold);
  border-color: var(--brushed-gold);
  color: var(--anthracite);
}

/* Mobile Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--anthracite);
  transition: all 0.3s;
}
.navbar.scrolled .hamburger span { background: #fff; }

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--anthracite);
  color: #fff;
  font-family: var(--font-main);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  border: 2px solid var(--anthracite);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s;
}
.btn-primary:hover {
  border-color: var(--brushed-gold);
  box-shadow: var(--gold-glow);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: transparent;
  color: var(--brushed-gold);
  font-family: var(--font-main);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1.5px solid var(--brushed-gold);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s;
}
.btn-secondary:hover {
  background: var(--gold-pale);
}

/* ===== HERO SECTION ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--surface) 0%, #f0ece4 50%, var(--surface) 100%);
  z-index: 0;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(212,175,55,0.06) 0%, transparent 60%);
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  width: 100%;
}
.hero-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--brushed-gold);
  margin-bottom: 24px;
  position: relative;
  padding-left: 48px;
}
.hero-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 36px;
  height: 1px;
  background: var(--brushed-gold);
}
.hero-title {
  font-size: clamp(36px, 5.5vw, 72px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--anthracite);
  margin-bottom: 24px;
  max-width: 700px;
}
.hero-title .gold { color: var(--brushed-gold); }
.hero-desc {
  font-size: 18px;
  line-height: 1.7;
  color: var(--on-surface-variant);
  max-width: 520px;
  margin-bottom: 40px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-image {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 45%;
  height: 70vh;
  overflow: hidden;
}
.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-image::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(212,175,55,0.2);
  z-index: 1;
}

/* ===== SECTION STYLES ===== */
.section {
  padding: var(--section-padding) 0;
}
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--brushed-gold);
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 600;
  color: var(--anthracite);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}
.section-title .gold { color: var(--brushed-gold); }
.section-desc {
  font-size: 16px;
  color: var(--on-surface-variant);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}
.section-divider {
  width: 60px;
  height: 1px;
  background: linear-gradient(to right, var(--brushed-gold), var(--gold-gradient-end));
  margin: 24px auto 0;
}

/* ===== CARDS ===== */
.card {
  background: var(--surface-white);
  border: var(--border-subtle);
  border-radius: 4px;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.card-image {
  width: 100%;
  aspect-ratio: 4/5;
  overflow: hidden;
  position: relative;
}
.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.card:hover .card-image img { transform: scale(1.05); }
.card-image .card-label {
  position: absolute;
  bottom: 16px;
  left: 16px;
  padding: 6px 14px;
  background: rgba(44, 44, 44, 0.85);
  color: var(--brushed-gold);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  backdrop-filter: blur(4px);
}
.card-body { padding: 24px; }
.card-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--anthracite);
  margin-bottom: 8px;
}
.card-body p {
  font-size: 14px;
  color: var(--on-surface-variant);
  line-height: 1.6;
}

/* ===== GRID LAYOUTS ===== */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gutter);
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gutter);
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gutter);
}

/* ===== FEATURE BOXES ===== */
.feature-box {
  padding: 40px;
  background: var(--surface-white);
  border: var(--border-subtle);
  border-radius: 4px;
  text-align: center;
  transition: all 0.4s;
}
.feature-box:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--brushed-gold);
  border: 1px solid rgba(212,175,55,0.3);
  border-radius: 4px;
}
.feature-box h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--anthracite);
  margin-bottom: 12px;
}
.feature-box p {
  font-size: 14px;
  color: var(--on-surface-variant);
  line-height: 1.7;
}

/* ===== STATS BAR ===== */
.stats-bar {
  background: var(--anthracite);
  padding: 48px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gutter);
  text-align: center;
}
.stat-item .stat-num {
  font-size: 36px;
  font-weight: 300;
  color: var(--brushed-gold);
  display: block;
  margin-bottom: 8px;
}
.stat-item .stat-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
}

/* ===== TIMELINE ===== */
.timeline {
  display: flex;
  justify-content: space-between;
  position: relative;
  padding: 40px 0;
}
.timeline::before {
  content: '';
  position: absolute;
  top: 54px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--brushed-gold), transparent);
}
.timeline-step {
  text-align: center;
  position: relative;
  flex: 1;
}
.timeline-dot {
  width: 12px;
  height: 12px;
  background: var(--anthracite);
  border-radius: 50%;
  margin: 0 auto 20px;
  position: relative;
  z-index: 1;
  transition: all 0.3s;
}
.timeline-step.active .timeline-dot {
  width: 16px;
  height: 16px;
  background: var(--brushed-gold);
  box-shadow: var(--gold-glow);
}
.timeline-step h4 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--anthracite);
  margin-bottom: 8px;
}
.timeline-step p {
  font-size: 14px;
  color: var(--on-surface-variant);
  max-width: 180px;
  margin: 0 auto;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--anthracite);
  color: #fff;
  padding: 80px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-brand span { color: var(--brushed-gold); }
.footer-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  margin-bottom: 24px;
}
.footer h4 {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--brushed-gold);
  margin-bottom: 20px;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  transition: color 0.3s;
}
.footer-links a:hover { color: var(--brushed-gold); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-copy {
  font-size: 12px;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.05em;
}

/* ===== CONTACT FORM ===== */
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--anthracite);
  margin-bottom: 8px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid rgba(44, 44, 44, 0.2);
  border-radius: 4px;
  font-family: var(--font-main);
  font-size: 14px;
  color: var(--on-surface);
  background: var(--surface-white);
  transition: border-color 0.3s;
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--brushed-gold);
}
.form-group textarea { resize: vertical; min-height: 120px; }

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in-up {
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
}
.fade-in-up.delay-1 { animation-delay: 0.1s; }
.fade-in-up.delay-2 { animation-delay: 0.2s; }
.fade-in-up.delay-3 { animation-delay: 0.3s; }
.fade-in-up.delay-4 { animation-delay: 0.4s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  :root { --section-padding: 80px; --gutter: 24px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .hero-image { display: none; }
  .hero-title { max-width: 100%; }
}
@media (max-width: 768px) {
  :root { --section-padding: 60px; --gutter: var(--margin-mobile); }
  .navbar { padding: 0 20px; }
  .nav-links { 
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--anthracite);
    flex-direction: column;
    padding: 20px;
    gap: 0;
  }
  .nav-links.open { display: flex; }
  .nav-link { color: rgba(255,255,255,0.7) !important; padding: 12px 16px; }
  .nav-link:hover { color: var(--brushed-gold) !important; }
  .nav-phone { display: none; }
  .hamburger { display: flex; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .timeline { flex-direction: column; gap: 32px; }
  .timeline::before { display: none; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}