/* ============================================
   YILDIZSERRAMENTI - Ana CSS Dosyası
   Tüm sayfalar bu dosyayı kullanır.
   Renk, font ve genel tasarım buradan yönetilir.
   ============================================ */

/* Google Fonts - Cormorant Garamond (başlıklar) + DM Sans (metin) */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,300;1,400&family=DM+Sans:wght@300;400;500;600&display=swap');

/* --- CSS DEĞİŞKENLERİ (Renkleri buradan değiştirebilirsiniz) --- */
:root {
  --siyah: #0a0a0a;
  --koyu: #141414;
  --panel: #1a1a1a;
  --sinir: #2a2a2a;
  --altin: #c9a84c;
  --altin-acik: #e8c97a;
  --beyaz: #f5f0e8;
  --gri: #8a8a8a;
  --acik-gri: #d0ccc4;
  --font-baslik: 'Cormorant Garamond', serif;
  --font-metin: 'DM Sans', sans-serif;
  --gecis: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--siyah);
  color: var(--beyaz);
  font-family: var(--font-metin);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* --- NAVİGASYON (Header) --- */
/* Sayfanın üstündeki menü çubuğu */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 5%;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--sinir);
  transition: var(--gecis);
}

.nav.scrolled {
  height: 65px;
  background: rgba(10,10,10,0.98);
}

/* ============================================
   LOGO - Animasyonlu Kapı İkonu
   Tüm sayfalarda kullanılan logo stili
   ============================================ */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

/* Logo ikon wrapper */
.logo-mark {
  position: relative;
  width: 34px;
  height: 42px;
  flex-shrink: 0;
  overflow: visible;
}

/* Arka glow efekti */
.logo-mark-glow {
  position: absolute;
  inset: -5px;
  background: radial-gradient(ellipse, rgba(201,168,76,0.18) 0%, transparent 70%);
  border-radius: 4px;
  animation: logoGlow 3s ease-in-out infinite;
  z-index: 0;
}

@keyframes logoGlow {
  0%,100% { opacity: 0.5; transform: scale(0.9); }
  50%      { opacity: 1;   transform: scale(1.08); }
}

.logo-mark svg {
  position: relative;
  z-index: 1;
  width: 34px;
  height: 42px;
  overflow: visible;
  display: block;
}

/* Kapı çizilme animasyonu */
.logo-door-frame {
  stroke-dasharray: 280;
  stroke-dashoffset: 280;
  animation: logoDraw 1.2s cubic-bezier(0.4,0,0.2,1) 0.1s forwards;
}

.logo-door-panel {
  stroke-dasharray: 200;
  stroke-dashoffset: 200;
  animation: logoDraw 0.9s cubic-bezier(0.4,0,0.2,1) 0.7s forwards;
}

.logo-door-light {
  opacity: 0;
  animation: logoFadeIn 1s ease 1.8s forwards;
}

.logo-door-shadow {
  opacity: 0;
  animation: logoFadeIn 0.6s ease 1.6s forwards;
}

.logo-door-knob {
  opacity: 0;
  transform: scale(0);
  transform-origin: 32px 28px;
  animation: logoPopKnob 0.5s cubic-bezier(0.34,1.56,0.64,1) 1.5s forwards;
}

.logo-knob-shine {
  animation: logoKnobShine 2.5s ease-in-out 2s infinite;
}

.logo-star-deco {
  opacity: 0;
  transform-origin: 20px 6px;
  animation: logoStarAppear 0.6s cubic-bezier(0.34,1.56,0.64,1) 1.9s forwards;
}

.logo-star-spin {
  transform-origin: 20px 6px;
  animation: logoStarSpin 8s linear 2.5s infinite;
}

@keyframes logoDraw        { to { stroke-dashoffset: 0; } }
@keyframes logoFadeIn      { to { opacity: 1; } }
@keyframes logoPopKnob     { to { opacity: 1; transform: scale(1); } }
@keyframes logoKnobShine   { 0%,100%{opacity:0.4} 50%{opacity:1} }
@keyframes logoStarSpin    { to { transform: rotate(360deg); } }
@keyframes logoStarAppear  {
  from { opacity: 0; transform: scale(0) rotate(-30deg); }
  to   { opacity: 1; transform: scale(1) rotate(0deg); }
}

/* Logo wordmark */
.logo-wordmark {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.logo-wm-top {
  display: flex;
  align-items: center;
  gap: 7px;
  opacity: 0;
  transform: translateX(-10px);
  animation: logoSlideIn 0.5s ease 0.6s forwards;
}

.logo-wm-bar {
  height: 1px;
  width: 18px;
  background: linear-gradient(90deg, var(--altin), transparent);
  transform: scaleX(0);
  transform-origin: left;
  animation: logoBarGrow 0.5s ease 0.9s forwards;
}

.logo-wm-tag {
  font-size: 7px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--altin);
  opacity: 0.7;
  font-family: var(--font-metin);
  font-weight: 300;
}

.logo-name {
  display: flex;
  align-items: baseline;
  overflow: hidden;
  line-height: 1;
}

.logo-name-y {
  font-family: 'Cormorant Garamond', serif;
  font-size: 22px;
  font-weight: 300;
  letter-spacing: 4px;
  color: var(--beyaz);
  opacity: 0;
  transform: translateY(110%);
  animation: logoRiseUp 0.65s cubic-bezier(0.2,0,0,1) 0.15s forwards;
  text-transform: uppercase;
}

.logo-name-p {
  font-family: 'Cormorant Garamond', serif;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 4px;
  color: var(--altin);
  opacity: 0;
  transform: translateY(110%);
  animation: logoRiseUp 0.65s cubic-bezier(0.2,0,0,1) 0.35s forwards;
  text-transform: uppercase;
}

.logo-wm-sub {
  font-size: 6.5px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: rgba(201,168,76,0.3);
  opacity: 0;
  font-family: var(--font-metin);
  font-weight: 300;
  animation: logoFadeIn 0.5s ease 1.4s forwards;
}

@keyframes logoSlideIn { to { opacity: 1; transform: translateX(0); } }
@keyframes logoBarGrow { to { transform: scaleX(1); } }
@keyframes logoRiseUp  { to { opacity: 1; transform: translateY(0); } }

/* Hover efektleri */
.nav-logo:hover .logo-mark-glow { animation-duration: 1s; }
.nav-logo:hover .logo-name-y    { color: var(--altin-acik); transition: color 0.3s; }

/* Masaüstü menü linkleri */
.nav-links {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.78rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--acik-gri);
  transition: var(--gecis);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--altin);
  transition: width 0.3s ease;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--altin);
}

.nav-links a:hover::after, .nav-links a.active::after {
  width: 100%;
}

/* Mobil menü hamburger butonu - varsayılan gizli */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
  background: none;
  border: none;
}

.nav-hamburger span {
  display: block;
  width: 25px; height: 2px;
  background: var(--beyaz);
  transition: var(--gecis);
}

/* Mobil menü açıkken hamburger animasyonu */
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobil açılır menü */
.nav-mobile {
  display: none;
  position: fixed;
  top: 80px; left: 0; right: 0;
  background: rgba(10,10,10,0.98);
  border-bottom: 1px solid var(--sinir);
  padding: 1.5rem 5%;
  flex-direction: column;
  gap: 0;
  z-index: 999;
}

.nav-mobile.open {
  display: flex;
}

.nav-mobile a {
  padding: 1rem 0;
  font-size: 0.85rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--acik-gri);
  border-bottom: 1px solid var(--sinir);
  transition: var(--gecis);
}

.nav-mobile a:last-child { border-bottom: none; }
.nav-mobile a:hover { color: var(--altin); padding-left: 10px; }

/* --- FOOTER (Alt bölüm) --- */
footer {
  background: var(--koyu);
  border-top: 1px solid var(--sinir);
  padding: 4rem 5% 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-logo {
  font-family: var(--font-baslik);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.footer-logo span { color: var(--altin); }

.footer-desc {
  color: var(--gri);
  font-size: 0.88rem;
  line-height: 1.8;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.72rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--altin);
  margin-bottom: 1.2rem;
}

.footer-col a, .footer-col p {
  display: block;
  color: var(--gri);
  font-size: 0.88rem;
  margin-bottom: 0.6rem;
  transition: var(--gecis);
}

.footer-col a:hover { color: var(--beyaz); }

.footer-bottom {
  border-top: 1px solid var(--sinir);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p {
  color: var(--gri);
  font-size: 0.78rem;
  letter-spacing: 1px;
}

/* --- ORTAK BÖLÜM BAŞLIKLARI --- */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-label {
  display: inline-block;
  font-size: 0.68rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--altin);
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-baslik);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 300;
  color: var(--beyaz);
  line-height: 1.2;
}

.section-title em {
  font-style: italic;
  color: var(--altin);
}

/* --- BUTONLAR --- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 2.5rem;
  background: var(--altin);
  color: var(--siyah);
  font-family: var(--font-metin);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: var(--gecis);
}

.btn-primary:hover {
  background: var(--altin-acik);
  transform: translateY(-2px);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 2.5rem;
  background: transparent;
  color: var(--beyaz);
  font-family: var(--font-metin);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  border: 1px solid rgba(255,255,255,0.3);
  cursor: pointer;
  transition: var(--gecis);
}

.btn-outline:hover {
  border-color: var(--altin);
  color: var(--altin);
}

/* --- SAYFA İÇERİK ALANI --- */
/* Sayfaların içeriği navbarın altında başlasın diye */
.page-content {
  padding-top: 80px;
}

/* --- MOBİL RESPONSIVE --- */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* --- FADE-IN ANİMASYONU --- */
/* Sayfaya girişte elemanlar yavaşça belirir */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-up {
  animation: fadeUp 0.8s ease forwards;
}

.fade-up-delay-1 { animation-delay: 0.1s; opacity: 0; animation-fill-mode: forwards; animation-name: fadeUp; animation-duration: 0.8s; }
.fade-up-delay-2 { animation-delay: 0.25s; opacity: 0; animation-fill-mode: forwards; animation-name: fadeUp; animation-duration: 0.8s; }
.fade-up-delay-3 { animation-delay: 0.4s; opacity: 0; animation-fill-mode: forwards; animation-name: fadeUp; animation-duration: 0.8s; }
.fade-up-delay-4 { animation-delay: 0.55s; opacity: 0; animation-fill-mode: forwards; animation-name: fadeUp; animation-duration: 0.8s; }

/* Scroll ile tetiklenen animasyon */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}


/* Checkbox'ı normale döndür */
.form-group input[type="checkbox"] {
  -webkit-appearance: checkbox !important;
  appearance: checkbox !important;
  width: auto !important;
  cursor: pointer;
}

.form-group input[type="checkbox"]:focus {
  outline: none;
  box-shadow: none;
}

/* ============================================
   MOBİL OPTİMİZASYON - Ek Düzeltmeler
   ============================================ */

/* Logo mobilde küçülür, taşmaz */
@media (max-width: 480px) {
  .nav-logo { gap: 8px; }
  .logo-mark { width: 26px; height: 32px; }
  .logo-mark svg { width: 26px; height: 32px; }
  .logo-name-y, .logo-name-p { font-size: 17px; letter-spacing: 3px; }
  .logo-wm-sub { display: none; }
  .logo-wm-tag { font-size: 6px; letter-spacing: 2px; }
}

/* Navbar scrolled mobil */
@media (max-width: 768px) {
  .nav-mobile { top: 80px; }
  .nav.scrolled ~ .nav-mobile { top: 65px; }

  /* Buton touch alanı büyütülür (min 44px) */
  .btn-primary, .btn-outline {
    padding: 0.9rem 1.8rem;
    min-height: 44px;
  }

  /* Footer tek sütun */
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* Küçük mobil (iPhone SE vb.) */
@media (max-width: 380px) {
  .nav { padding: 0 4%; }
  .logo-name-y, .logo-name-p { font-size: 15px; letter-spacing: 2px; }
  .logo-mark { width: 22px; height: 27px; }
  .logo-mark svg { width: 22px; height: 27px; }
  .logo-wm-top { display: none; }
  .logo-wm-sub { display: none; }
}

/* ── Prodotti filtre - yatay kaydırma mobilde ── */
@media (max-width: 576px) {
  .filter-section {
    padding: 1.5rem 4%;
    overflow-x: hidden;
  }
  .filter-buttons {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 4px;
    gap: 0.4rem;
    scrollbar-width: none;
  }
  .filter-buttons::-webkit-scrollbar { display: none; }
  .filter-btn {
    flex-shrink: 0;
    padding: 0.5rem 1rem;
    font-size: 0.65rem;
    min-height: 36px;
  }
}

/* ── Katalog grid mobil ── */
@media (max-width: 480px) {
  .catalog-grid { grid-template-columns: repeat(2, 1fr); gap: 0.5rem; }
  .catalog-info { flex-direction: column; gap: 1rem; padding: 2rem 4%; }
}

/* ── Chi-siamo story görseller mobil ── */
@media (max-width: 576px) {
  .story-images {
    grid-template-rows: 1fr !important;
    grid-template-columns: 1fr 1fr;
    height: 200px !important;
  }
}

/* ── Contatti kartlar mobil ── */
@media (max-width: 576px) {
  .contact-info { padding: 2rem 4%; }
  .contact-card { padding: 2rem 1.5rem; }
  .alt-contact-btns { flex-direction: column; align-items: stretch; }
  .alt-contact-btns a { text-align: center; justify-content: center; }
}

/* ── Genel section padding mobil ── */
@media (max-width: 576px) {
  .services, .about-preview, .product-showcase,
  .why-us, .values-section, .materials-section,
  .team-section, .quote-section, .story-section,
  .catalog-section, .products-section,
  .contact-main, .alt-contact {
    padding-left: 4%;
    padding-right: 4%;
  }

  .section-title { font-size: clamp(1.6rem, 6vw, 2.2rem); }
  .page-hero { padding: 8rem 4% 4rem; }
  .page-hero h1 { font-size: clamp(2rem, 8vw, 3rem); }
}

/* ── Resim lazy load placeholder ── */
img[loading="lazy"] {
  background: #1a1a1a;
}

/* ── Dokunmatik hedef büyüklüğü ── */
.nav-links a, .nav-mobile a {
  min-height: 44px;
  display: flex;
  align-items: center;
}

/* ── Kaydırma performansı ── */
.hero-images img,
.catalog-card img,
.product-img-wrap img,
.showcase-item img {
  will-change: transform;
}

/* ── iOS safe area (çentik ekranlar) ── */
@supports (padding: max(0px)) {
  .nav {
    padding-left: max(5%, env(safe-area-inset-left));
    padding-right: max(5%, env(safe-area-inset-right));
  }
  footer {
    padding-bottom: max(2rem, env(safe-area-inset-bottom));
  }
}