/* ==========================================================================
   BESPOKE ARCHITECTURAL PORTFOLIO - ERAY YAVUZ
   Estetik: Architectural Digest / Kinfolk / Luxury Interior Architecture
   Tipografi: Playfair Display + Cinzel + Plus Jakarta Sans (Full Turkish & Latin-Ext Support)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,500;0,600;1,400;1,500&family=Plus+Jakarta+Sans:wght@300;400;500;600&display=swap');

:root {
  /* Doğal Taş ve Mimari Malzeme Paleti */
  --bg-sand: #F5F3EE;
  --bg-card: #FFFFFF;
  --bg-stone: #EFECE6;
  
  --text-charcoal: #181715;
  --text-muted: #7A776E;
  --text-subtle: #A8A59C;
  
  --border-datum: #E5E1D7;
  --border-dark: #181715;
  --accent-travertine: #8F8474;
  --accent-brass: #B39B78;
  
  --font-editorial: 'Playfair Display', Georgia, serif;
  --font-cinzel: 'Cinzel', Georgia, serif;
  --font-technical: 'Plus Jakarta Sans', -apple-system, sans-serif;
  
  --ease-architectural: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-sand);
  color: var(--text-charcoal);
  font-family: var(--font-technical);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-sand);
  color: var(--text-charcoal);
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  position: relative;
}

/* ---------------- Arka Plan Mimari Kılavuz Çizgileri (Datum Canvas) ---------------- */
.datum-canvas-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.datum-line {
  border-right: 1px dashed rgba(216, 212, 201, 0.35);
  height: 100vh;
}

.datum-line:first-child {
  border-left: 1px dashed rgba(216, 212, 201, 0.35);
}

/* ---------------- Tipografi Tanımlamaları ---------------- */
.font-editorial {
  font-family: var(--font-editorial);
}

.font-cinzel {
  font-family: var(--font-cinzel);
}

.font-technical {
  font-family: var(--font-technical);
}

.hero-title {
  font-family: var(--font-editorial);
  letter-spacing: -0.015em;
  line-height: 1.06;
}

.project-title {
  font-family: var(--font-editorial);
  letter-spacing: -0.01em;
}

/* ---------------- Narin Mimari Aks Çizgileri & Kotlar ---------------- */
.hairline {
  height: 1px;
  background-color: var(--border-datum);
}

.hairline-dark {
  height: 1px;
  background-color: var(--border-dark);
}

.kot-marker {
  font-family: var(--font-technical);
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-travertine);
}

/* ---------------- Özel Scrollbar ---------------- */
::-webkit-scrollbar {
  width: 5px;
}

::-webkit-scrollbar-track {
  background: var(--bg-sand);
}

::-webkit-scrollbar-thumb {
  background: #CFC9BD;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-charcoal);
}

/* ==========================================================================
   1. KEN BURNS TAM EKRAN SLIDER & CROSSFADE GEÇİŞLERİ
   ========================================================================== */
.kenburns-container {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 1;
}

.kenburns-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1.6s cubic-bezier(0.4, 0, 0.2, 1), visibility 1.6s ease;
  will-change: opacity;
  z-index: 1;
}

.kenburns-slide.active {
  opacity: 1;
  visibility: visible;
  z-index: 2;
}

.kenburns-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.0);
  will-change: transform;
}

/* Aktif slaydın 8 saniyelik pürüzsüz yakınlaşması (GPU Donanım Hızlandırmalı) */
.kenburns-slide.active .kenburns-img {
  animation: kenBurnsZoom 8s cubic-bezier(0.18, 0.85, 0.35, 1) forwards;
}

@keyframes kenBurnsZoom {
  0% {
    transform: scale(1.0);
  }
  100% {
    transform: scale(1.12);
  }
}

/* Lüks Sinematik Degrade ve Kenar Karartması (Dengeli & Nefes Alan Mimari Işık) */
.cinematic-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10, 9, 8, 0.48) 0%,
    rgba(10, 9, 8, 0.28) 35%,
    rgba(10, 9, 8, 0.42) 70%,
    rgba(10, 9, 8, 0.70) 100%
  );
  z-index: 3;
  pointer-events: none;
}

.cinematic-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, transparent 45%, rgba(0, 0, 0, 0.55) 100%);
  z-index: 4;
  pointer-events: none;
}

/* Slide Progress Barları */
.hero-progress-bar-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-progress-bar-item {
  position: relative;
  width: 44px;
  height: 3px;
  background: rgba(255, 255, 255, 0.25);
  cursor: pointer;
  overflow: hidden;
  transition: width 0.3s ease, background-color 0.3s ease;
}

.hero-progress-bar-item:hover {
  background: rgba(255, 255, 255, 0.5);
}

.hero-progress-bar-item.active {
  width: 60px;
  background: rgba(255, 255, 255, 0.3);
}

.hero-progress-bar-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background: #FFFFFF;
}

.hero-progress-bar-item.active .hero-progress-bar-fill {
  width: 100%;
  transition: width 7.8s linear;
}

/* ==========================================================================
   2. NAVBAR & HEADER DÖNÜŞÜMLERİ
   ========================================================================== */
.navbar-architectural {
  transition: background-color 0.45s var(--ease-architectural), 
              border-color 0.45s var(--ease-architectural), 
              box-shadow 0.45s var(--ease-architectural),
              padding 0.3s ease;
}

/* En üstte şeffaf durum */
.navbar-transparent {
  background-color: transparent;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  color: #FFFFFF;
}

.navbar-transparent .nav-link-arch {
  color: rgba(255, 255, 255, 0.9);
}

/* Marka Logosu (EY Monogram) & Yazı Renkleri */
.brand-logo-img {
  filter: brightness(0) invert(1) drop-shadow(0 1px 3px rgba(0, 0, 0, 0.45));
  -webkit-filter: brightness(0) invert(1) drop-shadow(0 1px 3px rgba(0, 0, 0, 0.45));
  transition: transform 0.3s ease, filter 0.3s ease;
}

.brand-name {
  color: #FFFFFF !important;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.6);
  letter-spacing: 0.18em;
}

.brand-sub {
  color: #EFECE6 !important;
  letter-spacing: 0.25em;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

.navbar-transparent .brand-name {
  color: #FFFFFF !important;
}

.navbar-transparent .brand-sub {
  color: #EFECE6 !important;
}

/* Sayfa kaydırıldığında aktif olan koyu cam efekti */
.navbar-scrolled {
  background-color: rgba(18, 17, 16, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  color: #FFFFFF;
}

.navbar-scrolled .brand-name {
  color: #FFFFFF !important;
}

.navbar-scrolled .brand-sub {
  color: #EFECE6 !important;
}

.navbar-scrolled .nav-link-arch {
  color: rgba(255, 255, 255, 0.85);
}

.navbar-scrolled .nav-link-arch::after {
  background-color: #FFFFFF;
}

.navbar-scrolled .brand-name {
  color: #FFFFFF;
}

.navbar-scrolled .brand-sub {
  color: rgba(255, 255, 255, 0.6);
}

.nav-link-arch {
  font-family: var(--font-technical);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  position: relative;
  padding: 0.25rem 0;
  transition: color 0.3s ease;
}

.nav-link-arch::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  transition: width 0.3s var(--ease-architectural);
}

.nav-link-arch:hover::after,
.nav-link-arch.active::after {
  width: 100%;
}

/* ==========================================================================
   3. MİMARİ PROJE KARTLARI (BESPOKE CARDS)
   ========================================================================== */
.arch-card {
  position: relative;
  background-color: var(--bg-card);
  border: 1px solid var(--border-datum);
  transition: border-color 0.4s ease, transform 0.4s var(--ease-architectural), box-shadow 0.4s ease;
}

.arch-card:hover {
  border-color: var(--text-charcoal);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.06);
}

.arch-card-image {
  transition: transform 0.9s var(--ease-architectural), filter 0.9s ease;
  will-change: transform;
}

.arch-card:hover .arch-card-image {
  transform: scale(1.028);
}

/* ==========================================================================
   4. KENDİ YAPTIĞIMIZ MİMARİ BUTONLAR & CTA
   ========================================================================== */
/* İnce transparan beyaz Ghost Button (Hero için) */
.btn-ghost-arch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.9rem 2rem;
  background-color: transparent;
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.85);
  font-family: var(--font-technical);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 500;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  transition: all 0.35s var(--ease-architectural);
  cursor: pointer;
  text-decoration: none;
}

.btn-ghost-arch:hover {
  background-color: #FFFFFF;
  color: #181715;
  border-color: #FFFFFF;
  transform: translateY(-1px);
}

.btn-datum {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.75rem;
  background-color: var(--text-charcoal);
  color: var(--bg-sand);
  font-family: var(--font-technical);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
  border: 1px solid var(--text-charcoal);
  transition: all 0.35s var(--ease-architectural);
  cursor: pointer;
  text-decoration: none;
}

.btn-datum:hover {
  background-color: transparent;
  color: var(--text-charcoal);
}

.btn-datum-outline {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.75rem;
  background-color: transparent;
  color: var(--text-charcoal);
  font-family: var(--font-technical);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
  border: 1px solid var(--border-datum);
  transition: all 0.35s var(--ease-architectural);
  cursor: pointer;
  text-decoration: none;
}

.btn-datum-outline:hover {
  border-color: var(--text-charcoal);
}

/* Pafta Aksiyon Linki */
.arch-action-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-technical);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-charcoal);
  cursor: pointer;
  transition: gap 0.3s var(--ease-architectural);
}

.arch-action-link .axis-line {
  display: inline-block;
  width: 28px;
  height: 1px;
  background-color: var(--text-charcoal);
  transition: width 0.3s var(--ease-architectural);
}

.arch-action-link:hover {
  gap: 1.15rem;
}

.arch-action-link:hover .axis-line {
  width: 44px;
}

/* ---------------- Filtre Çipleri (Technical Filter Chips) ---------------- */
.arch-filter-btn {
  font-family: var(--font-technical);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.5rem 1.15rem;
  background-color: transparent;
  border: 1px solid var(--border-datum);
  color: var(--text-muted);
  transition: all 0.3s var(--ease-architectural);
  cursor: pointer;
}

.arch-filter-btn:hover {
  border-color: var(--text-charcoal);
  color: var(--text-charcoal);
}

.arch-filter-btn.active {
  background-color: var(--text-charcoal);
  color: var(--bg-sand);
  border-color: var(--text-charcoal);
}

/* ---------------- Mimari Proje Seçici Sekmeleri (Interactive Monograph Tabs) ---------------- */
.arch-proj-tab {
  position: relative;
  cursor: pointer;
  min-width: 220px;
  max-width: 280px;
  flex: 1 1 0;
  border-radius: 0;
  transition: all 0.3s var(--ease-architectural);
}

.arch-proj-tab:hover {
  transform: translateY(-2px);
  border-color: var(--text-charcoal);
}

.arch-proj-tab.active {
  background-color: #181715 !important;
  border-color: #181715 !important;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
}

.arch-proj-tab.active .tab-dot {
  background-color: var(--accent-brass);
}

.arch-proj-tab.active .tab-code {
  color: #CFC9BD;
}

.arch-proj-tab.active .tab-title {
  color: #FFFFFF;
}

.arch-proj-tab.active .tab-meta {
  color: #A8A59C;
}

.arch-proj-nav-btn {
  cursor: pointer;
  transition: all 0.25s var(--ease-architectural);
}

.arch-proj-nav-btn:hover {
  transform: translateY(-1px);
}

/* Yatay kaydırma çubuğunu gizleme */
.scrollbar-none::-webkit-scrollbar {
  display: none;
}
.scrollbar-none {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* ---------------- Scroll Reveal Efektleri ---------------- */
.reveal-item {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.8s var(--ease-architectural), transform 0.8s var(--ease-architectural);
  will-change: opacity, transform;
}

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

/* ---------------- Tam Ekran Pafta Modalı (Architectural Sheet Lightbox) ---------------- */
.modal-sheet-backdrop {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s var(--ease-architectural), visibility 0.4s ease;
}

.modal-sheet-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.modal-sheet-panel {
  transform: translateY(24px) scale(0.99);
  opacity: 0;
  transition: transform 0.45s var(--ease-architectural), opacity 0.45s ease;
}

.modal-sheet-backdrop.is-open .modal-sheet-panel {
  transform: translateY(0) scale(1);
  opacity: 1;
}

/* Galeri küçük kareleri */
.sheet-thumb {
  position: relative;
  cursor: pointer;
  border: 1px solid transparent;
  opacity: 0.55;
  transition: all 0.3s ease;
}

.sheet-thumb:hover {
  opacity: 0.85;
}

.sheet-thumb.active {
  opacity: 1;
  border-color: var(--text-charcoal);
}

/* Mobil Menü Geçişi */
#mobile-menu-arch {
  transition: transform 0.45s var(--ease-architectural), opacity 0.4s ease;
}

#mobile-menu-arch.menu-closed {
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
}

#mobile-menu-arch.menu-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}