/* ══════════════════════════════════════════════
   MURAT TOPAN — ANA TEMA CSS
   Siyah-Beyaz Premium + Altın Vurgu
   ══════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400;1,600&family=Inter:wght@300;400;500;600&display=swap');

/* ── Reset & Base ─────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --black: #000000;
  --dark: #0d0d0d;
  --dark-2: #1a1a1a;
  --dark-3: #252525;
  --gray: #3a3a3a;
  --gray-2: #555555;
  --light-gray: #8a8a8a;
  --white: #ffffff;
  --off-white: #f0ede8;
  --cream: #faf8f4;
  --gold: #c8a96e;
  --gold-light: #e2c898;
  --gold-dark: #9a7a42;
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --navbar-height: 72px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.6);
  --glass: rgba(255,255,255,0.04);
  --glass-border: rgba(255,255,255,0.08);
  --gold-glow: 0 0 20px rgba(200,169,110,0.3);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--black);
  color: var(--white);
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── Scrollbar ────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark); }
::-webkit-scrollbar-thumb { background: var(--gold-dark); border-radius: 3px; }

/* ══════════════════════════════════════════════
   NAVBAR
   ══════════════════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 40px;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(200, 169, 110, 0.15);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(0, 0, 0, 0.92);
  border-bottom-color: rgba(200, 169, 110, 0.3);
}

.navbar-logo {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  text-decoration: none;
}

.navbar-logo h1 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1.1;
}

.navbar-logo span {
  display: block;
  font-family: var(--font-body);
  font-size: 0.6rem;
  font-weight: 300;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
  margin-top: 2px;
}

.navbar-right {
  position: absolute;
  right: 40px;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 16px;
}

/* ── Sertifika Sorgula Butonu ─────────────────── */
.btn-sertifika {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: transparent;
  border: 1px solid rgba(200, 169, 110, 0.5);
  color: var(--gold);
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-sertifika::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gold);
  transform: translateX(-100%);
  transition: transform 0.3s ease;
}

.btn-sertifika:hover::before {
  transform: translateX(0);
}

.btn-sertifika:hover {
  color: var(--black);
  border-color: var(--gold);
  box-shadow: var(--gold-glow);
}

.btn-sertifika span,
.btn-sertifika svg {
  position: relative;
  z-index: 1;
}

/* ── Dil Değiştirme Butonu (TR/EN) ───────────── */
.lang-switch-container {
  display: inline-block;
  opacity: 0.9;
  transition: var(--transition);
}

.lang-switch-container:hover {
  opacity: 1;
}

.lang-switch {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 84px;
  height: 28px;
  background: rgba(13, 13, 13, 0.7);
  border: 1px solid rgba(200, 169, 110, 0.35);
  border-radius: 14px;
  cursor: pointer;
  padding: 0 8px;
  user-select: none;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.8);
}

.lang-switch:hover {
  border-color: var(--gold);
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.8), 0 0 12px rgba(200, 169, 110, 0.2);
}

.lang-slider {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 38px;
  height: 22px;
  background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
  border-radius: 11px;
  transition: transform 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
  z-index: 1;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
}

.lang-switch.en-selected .lang-slider {
  transform: translateX(40px);
}

.lang-label {
  position: relative;
  z-index: 2;
  font-family: var(--font-body);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--light-gray);
  letter-spacing: 0.08em;
  transition: color 0.3s ease;
  pointer-events: none;
  width: 32px;
  text-align: center;
}

.lang-switch:not(.en-selected) #lang-tr-label {
  color: var(--black);
  text-shadow: 0 1px 1px rgba(255, 255, 255, 0.15);
}

.lang-switch.en-selected #lang-en-label {
  color: var(--black);
  text-shadow: 0 1px 1px rgba(255, 255, 255, 0.15);
}

/* ══════════════════════════════════════════════
   HERO — TAM EKRAN VIDEO
   ══════════════════════════════════════════════ */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  background: var(--black);
}

.hero-video-wrapper {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-video-wrapper video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(0,0,0,0.35) 0%,
    rgba(0,0,0,0.15) 40%,
    rgba(0,0,0,0.15) 60%,
    rgba(0,0,0,0.6) 100%
  );
  z-index: 1;
}

.hero-content {
  position: absolute;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  z-index: 2;
  pointer-events: none;
}

.hero-scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  animation: fadeInUp 2s ease 1s both;
}

.hero-scroll-indicator span {
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,0.6);
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, rgba(200,169,110,0.8), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ══════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════ */
.footer {
  background: var(--dark);
  border-top: 1px solid rgba(200, 169, 110, 0.15);
  padding: 64px 60px 0;
}

/* Üst kolon bölümü */
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

/* Marka kolonu */
.footer-brand .footer-logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 6px;
}

.footer-brand .footer-tagline {
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 18px;
}

.footer-brand .footer-desc {
  font-size: 0.8rem;
  color: var(--light-gray);
  line-height: 1.8;
  max-width: 280px;
}

/* Sosyal medya ikonları */
.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 24px;
}

.social-link {
  width: 38px;
  height: 38px;
  border: 1px solid rgba(200,169,110,0.25);
  color: var(--light-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.social-link::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gold);
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.social-link:hover::before { transform: translateY(0); }
.social-link:hover { color: var(--black); border-color: var(--gold); }
.social-link svg, .social-link span { position: relative; z-index: 1; }

/* Footer kolon başlıkları */
.footer-col-title {
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(200,169,110,0.15);
}

/* İletişim listesi */
.footer-contact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--light-gray);
  line-height: 1.5;
}

.footer-contact-list .icon {
  color: var(--gold);
  font-size: 0.85rem;
  flex-shrink: 0;
  margin-top: 1px;
}

.footer-contact-list a {
  color: var(--light-gray);
  text-decoration: none;
  transition: var(--transition);
}

.footer-contact-list a:hover { color: var(--gold); }

/* Hızlı linkler */
.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links-list li a {
  font-size: 0.8rem;
  color: var(--light-gray);
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 7px;
}

.footer-links-list li a::before {
  content: '—';
  color: var(--gold);
  font-size: 0.65rem;
  opacity: 0.6;
}

.footer-links-list li a:hover { color: var(--gold); padding-left: 4px; }

/* Alt bar */
.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copy {
  font-size: 0.72rem;
  color: var(--gray-2);
  letter-spacing: 0.03em;
}

.footer-copy strong { color: var(--gold); }

/* Admin linki - ince, dikkat çekmeyen */
.footer-admin-link {
  font-size: 0.65rem;
  color: var(--gray);
  text-decoration: none;
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: var(--transition);
  opacity: 0.5;
}

.footer-admin-link:hover {
  color: var(--gold);
  opacity: 1;
}

/* Responsive footer */
@media (max-width: 900px) {
  .footer {
    padding: 48px 24px 0;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
  .footer-top {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
}

/* ══════════════════════════════════════════════
   SERTIFIKA SORGULAMA SAYFASI
   ══════════════════════════════════════════════ */
.page-header {
  padding-top: var(--navbar-height);
  min-height: 280px;
  background: linear-gradient(180deg, var(--dark) 0%, var(--black) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(200,169,110,0.06) 0%, transparent 70%);
}

.page-header-ornament {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.4em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 16px;
  position: relative;
}

.page-header-ornament::before,
.page-header-ornament::after {
  content: '─';
  margin: 0 12px;
  opacity: 0.5;
}

.page-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--white);
  position: relative;
}

.page-header p {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--light-gray);
  letter-spacing: 0.05em;
  position: relative;
}

/* ── Arama Formu ──────────────────────────────── */
.search-section {
  padding: 60px 40px;
  max-width: 600px;
  margin: 0 auto;
}

.search-form {
  display: flex;
  gap: 0;
  position: relative;
}

.search-input {
  flex: 1;
  padding: 18px 24px;
  background: var(--dark-2);
  border: 1px solid rgba(255,255,255,0.1);
  border-right: none;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  outline: none;
  transition: var(--transition);
}

.search-input::placeholder {
  color: var(--gray-2);
  letter-spacing: 0.1em;
}

.search-input:focus {
  border-color: var(--gold);
  background: var(--dark-3);
}

.search-btn {
  padding: 18px 32px;
  background: var(--gold);
  border: 1px solid var(--gold);
  color: var(--black);
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.search-btn:hover {
  background: var(--gold-light);
  box-shadow: var(--gold-glow);
}

/* ── Sertifika Sonuç Kartı ────────────────────── */
.result-section {
  padding: 0 40px 80px;
  max-width: 1100px;
  margin: 0 auto;
}

.cert-card {
  background: var(--dark-2);
  border: 1px solid rgba(200, 169, 110, 0.2);
  padding: 50px;
  position: relative;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.cert-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.cert-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.cert-no-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.cert-no-badge .label {
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
}

.cert-no-badge .value {
  font-family: var(--font-body);
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.1em;
}

.cert-date {
  font-size: 0.75rem;
  color: var(--light-gray);
  letter-spacing: 0.05em;
}

/* ── İki Kolon Layout ─────────────────────────── */
.cert-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

/* ── Tesbih Görselleri ────────────────────────── */
.cert-images-section h3,
.cert-card-section h3 {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.cert-images-section h3::after,
.cert-card-section h3::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(255,255,255,0.06);
}

.images-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.image-item {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--dark-3);
  border: 1px solid rgba(255,255,255,0.06);
  cursor: pointer;
  group: image;
}

.image-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.image-item:hover img {
  transform: scale(1.05);
}

.image-download-btn {
  position: absolute;
  bottom: 8px;
  right: 8px;
  width: 34px;
  height: 34px;
  background: rgba(0,0,0,0.75);
  border: 1px solid rgba(200,169,110,0.5);
  color: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(4px);
  transition: var(--transition);
  text-decoration: none;
  backdrop-filter: blur(10px);
}

.image-item:hover .image-download-btn {
  opacity: 1;
  transform: translateY(0);
}

.image-download-btn:hover {
  background: var(--gold);
  color: var(--black);
}

/* ── Sertifika Kartı ──────────────────────────── */
.cert-card-image-wrapper {
  position: relative;
  aspect-ratio: 1020 / 576;
  overflow: hidden;
  background: var(--dark-3);
  border: 1px solid rgba(255,255,255,0.06);
}

.cert-card-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.cert-card-image-wrapper:hover img {
  transform: scale(1.03);
}

.cert-card-download-overlay {
  position: absolute;
  bottom: 12px;
  right: 12px;
  display: flex;
  gap: 8px;
}

/* ── Özellikler Tablosu ───────────────────────── */
.cert-specs {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 32px;
  margin-bottom: 40px;
}

.cert-specs h3 {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 24px;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
}

.spec-item {
  background: var(--dark-2);
  padding: 20px 24px;
  transition: var(--transition);
}

.spec-item:hover {
  background: var(--dark-3);
}

.spec-label {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.spec-value {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--white);
  word-break: break-word;
  overflow-wrap: break-word;

}

/* ── Footer Butonları ─────────────────────────── */
.cert-footer-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

/* ── Genel Butonlar ───────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--gold);
  border: 1px solid var(--gold);
  color: var(--black);
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary:hover {
  background: var(--gold-light);
  box-shadow: var(--gold-glow);
  transform: translateY(-1px);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--light-gray);
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: transparent;
  border: 1px solid rgba(200,169,110,0.4);
  color: var(--gold);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-icon:hover {
  background: var(--gold);
  color: var(--black);
  box-shadow: var(--gold-glow);
}

/* ── Hata Mesajı ──────────────────────────────── */
.error-card {
  text-align: center;
  padding: 60px 40px;
  border: 1px solid rgba(200, 169, 110, 0.1);
  animation: fadeIn 0.4s ease;
}

.error-icon {
  width: 70px;
  height: 70px;
  border: 1px solid rgba(200,169,110,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 1.8rem;
}

.error-card h2 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 12px;
}

.error-card p {
  font-size: 0.85rem;
  color: var(--light-gray);
  letter-spacing: 0.03em;
}

/* ── Loading ──────────────────────────────────── */
.loading {
  text-align: center;
  padding: 40px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 2px solid rgba(200,169,110,0.2);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Lightbox ─────────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border: 1px solid rgba(200,169,110,0.2);
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--white);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.lightbox-close:hover {
  background: var(--gold);
  color: var(--black);
}

/* ══════════════════════════════════════════════
   RESPONSIVE — TAM MOBİL UYUM
   ══════════════════════════════════════════════ */

/* ── Tablet (≤ 900px) ─────────────────────────── */
@media (max-width: 900px) {
  .footer {
    padding: 48px 24px 0;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
  .footer-brand { grid-column: 1 / -1; }
}

/* ── Mobil (≤ 768px) ─────────────────────────── */
@media (max-width: 768px) {
  /* Navbar */
  .navbar {
    padding: 0 16px;
    height: 60px;
  }
  :root {
    --navbar-height: 60px;
  }
  .navbar-logo h1 {
    font-size: 1.2rem;
    letter-spacing: 0.08em;
  }
  .navbar-logo span {
    font-size: 0.5rem;
    letter-spacing: 0.2em;
  }
  .navbar-right {
    right: 16px;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    gap: 4px;
    height: 100%;
  }
  .lang-switch-container {
    margin-top: 0;
  }
  .lang-switch {
    width: 64px !important;
    height: 20px !important;
    border-radius: 10px !important;
    padding: 0 4px !important;
  }
  .lang-slider {
    width: 26px !important;
    height: 14px !important;
    border-radius: 7px !important;
  }
  .lang-switch.en-selected .lang-slider {
    transform: translateX(28px) !important;
  }
  .lang-label {
    font-size: 0.52rem !important;
    width: 24px !important;
    line-height: 18px !important;
  }
  .btn-sertifika {
    padding: 6px 12px;
    font-size: 0.6rem;
    letter-spacing: 0.05em;
    gap: 5px;
  }
  .btn-sertifika span {
    display: none;
  }
  .btn-sertifika svg {
    width: 15px;
    height: 15px;
  }

  /* Sayfa başlığı */
  .page-header {
    min-height: 200px;
    padding: var(--navbar-height) 20px 30px;
  }
  .page-header h1 {
    font-size: clamp(1.6rem, 7vw, 2.5rem);
  }
  .page-header p {
    font-size: 0.78rem;
  }

  /* Arama formu */
  .search-section {
    padding: 32px 16px;
  }
  .search-form {
    flex-direction: column;
    gap: 10px;
  }
  .search-input {
    border-right: 1px solid rgba(255,255,255,0.1);
    border-radius: 0;
    padding: 16px 18px;
    font-size: 0.95rem;
  }
  .search-input:focus {
    border-color: var(--gold);
  }
  .search-btn {
    padding: 16px;
    width: 100%;
    font-size: 0.8rem;
  }

  /* Sertifika sonuç alanı */
  .result-section {
    padding: 0 16px 60px;
  }
  .cert-card {
    padding: 24px 16px;
  }

  /* Sertifika başlık */
  .cert-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 28px;
    padding-bottom: 20px;
  }
  .cert-no-badge .value {
    font-size: 1.4rem;
  }

  /* İki kolon → tek kolon */
  .cert-body {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  /* Görsel grid */
  .images-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  /* Sertifika kartı görseli */
  .cert-card-image-wrapper {
    max-width: 100%;
    margin: 0 auto;
  }

  /* Özellikler tablosu */
  .specs-grid {
    grid-template-columns: 1fr 1fr;
  }

  /* Footer butonları */
  .cert-footer-actions {
    flex-direction: column;
    gap: 12px;
    align-items: stretch;
  }
  .cert-footer-actions .btn-primary,
  .cert-footer-actions .btn-ghost {
    text-align: center;
    justify-content: center;
    padding: 14px;
  }

  /* Footer */
  .footer {
    padding: 40px 16px 0;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
  .footer-brand .footer-desc {
    max-width: 100%;
  }

  /* Lightbox */
  .lightbox-close {
    top: 12px;
    right: 12px;
    width: 40px;
    height: 40px;
  }
  .lightbox img {
    max-width: 95vw;
    max-height: 85vh;
  }
}

/* ── Küçük Mobil (≤ 480px) ───────────────────── */
@media (max-width: 480px) {
  .navbar-logo h1 {
    font-size: 1.05rem;
  }
  .page-header-ornament {
    font-size: 0.6rem;
    letter-spacing: 0.25em;
  }
  .cert-card {
    padding: 20px 12px;
  }
  .cert-no-badge .value {
    font-size: 1.2rem;
  }
  .specs-grid {
    grid-template-columns: 1fr;
  }
  .spec-item {
    padding: 16px;
  }
  .images-grid {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }
  .search-input {
    padding: 14px 14px;
    font-size: 0.9rem;
  }
  .search-btn {
    padding: 14px;
  }
}

/* ══════════════════════════════════════════════
   SHOWCASE SECTION — USTALIK VE HİKAYE BÖLÜMÜ
   ══════════════════════════════════════════════ */
.showcase-section {
  background: linear-gradient(180deg, var(--black) 0%, var(--dark) 100%);
  padding: 100px 60px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid rgba(200, 169, 110, 0.15);
}

.showcase-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(200, 169, 110, 0.03) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
}

.showcase-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.showcase-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.showcase-subtitle {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 16px;
  position: relative;
}

.showcase-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 3.5vw, 3.8rem);
  font-weight: 400;
  line-height: 1.15;
  color: var(--white);
  margin-bottom: 24px;
}

.showcase-divider {
  width: 60px;
  height: 1px;
  background: var(--gold);
  margin-bottom: 32px;
}

.showcase-text {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--light-gray);
  margin-bottom: 40px;
  text-align: justify;
}

.showcase-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.showcase-media {
  width: 100%;
}

.showcase-video-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--dark-2);
  border: 1px solid rgba(200, 169, 110, 0.2);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(0, 0, 0, 0.8);
  overflow: hidden;
  transition: var(--transition);
}

.showcase-video-wrapper:hover {
  border-color: rgba(200, 169, 110, 0.5);
  box-shadow: var(--shadow-lg), var(--gold-glow);
  transform: translateY(-4px);
}

.showcase-video-wrapper video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Responsive showcase */
@media (max-width: 1024px) {
  .showcase-container {
    gap: 40px;
  }
}

@media (max-width: 900px) {
  .showcase-section {
    padding: 80px 40px;
  }
  .showcase-container {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .showcase-title {
    font-size: 2.5rem;
  }
  .showcase-text {
    font-size: 0.9rem;
    margin-bottom: 30px;
  }
}

@media (max-width: 600px) {
  .showcase-section {
    padding: 60px 20px;
  }
  .showcase-subtitle {
    font-size: 0.7rem;
    letter-spacing: 0.2em;
  }
  .showcase-title {
    font-size: 2rem;
  }
  .showcase-actions {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }
  .showcase-actions .btn-primary,
  .showcase-actions .btn-ghost {
    width: 100%;
    justify-content: center;
    text-align: center;
    padding: 14px;
  }
}

/* ══════════════════════════════════════════════
   NAVIGATION REFACTOR (DESKTOP & MOBILE MENU)
   ══════════════════════════════════════════════ */
.navbar-left {
  position: absolute;
  left: 40px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.navbar-left a {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--light-gray);
  text-decoration: none;
  transition: var(--transition);
  position: relative;
  padding: 6px 0;
}

.navbar-left a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: var(--transition);
}

.navbar-left a:hover {
  color: var(--gold);
}

.navbar-left a:hover::after {
  width: 100%;
}

.navbar-left a.active {
  color: var(--white);
}

.navbar-left a.active::after {
  width: 100%;
  background: var(--gold);
}

/* Hamburger menu button (hidden on desktop) */
.navbar-menu-toggle {
  display: none;
  position: absolute;
  left: 16px;
  flex-direction: column;
  justify-content: space-between;
  width: 22px;
  height: 16px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1001;
  padding: 0;
}

.navbar-menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--gold);
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  transform-origin: left center;
}

.navbar-menu-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(2px, 0);
  background-color: var(--white);
}

.navbar-menu-toggle.open span:nth-child(2) {
  width: 0%;
  opacity: 0;
}

.navbar-menu-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(2px, 1px);
  background-color: var(--white);
}

/* Mobile Menu Panel */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  transform: translateY(20px);
  transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.mobile-menu-overlay.active .mobile-menu-panel {
  transform: translateY(0);
}

.mobile-menu-link {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--light-gray);
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: var(--transition);
}

.mobile-menu-link:hover,
.mobile-menu-link.active {
  color: var(--gold);
  text-shadow: var(--gold-glow);
}

@media (max-width: 768px) {
  .navbar-left {
    display: none;
  }
  .navbar-menu-toggle {
    display: flex;
  }
}

/* ══════════════════════════════════════════════
   BIOGRAPHY PAGE SPECIFIC STYLING
   ══════════════════════════════════════════════ */
.bio-hero {
  padding-top: calc(var(--navbar-height) + 40px);
  min-height: 400px;
  background: linear-gradient(180deg, var(--dark) 0%, var(--black) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.bio-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(200,169,110,0.08) 0%, transparent 70%);
}

.bio-hero-ornament {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.4em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 20px;
  position: relative;
}

.bio-hero-ornament::before,
.bio-hero-ornament::after {
  content: '──';
  margin: 0 16px;
  opacity: 0.4;
}

.bio-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--white);
  line-height: 1.1;
  position: relative;
}

.bio-hero p {
  margin-top: 16px;
  font-size: 1rem;
  color: var(--light-gray);
  letter-spacing: 0.05em;
  max-width: 600px;
  position: relative;
}

/* Bio Story Section */
.bio-story-section {
  padding: 100px 60px;
  background: var(--black);
  position: relative;
}

.bio-story-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 80px;
  align-items: center;
}

.bio-image-wrapper {
  position: relative;
  border: 1px solid rgba(200, 169, 110, 0.2);
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 5;
  overflow: hidden;
}

.bio-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.bio-image-wrapper:hover img {
  transform: scale(1.03);
}

.bio-image-wrapper::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(200, 169, 110, 0.1);
  margin: 12px;
  pointer-events: none;
}

.bio-story-content h2 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--white);
  margin-bottom: 24px;
  font-weight: 400;
}

.bio-story-content .divider {
  width: 60px;
  height: 1px;
  background: var(--gold);
  margin-bottom: 32px;
}

.bio-story-content p {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--light-gray);
  margin-bottom: 24px;
  text-align: justify;
}

/* Bio Quote Section */
.bio-quote-section {
  padding: 120px 40px;
  background: linear-gradient(180deg, var(--black) 0%, var(--dark) 50%, var(--black) 100%);
  position: relative;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.bio-quote-container {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.bio-quote-icon {
  font-family: var(--font-display);
  font-size: 6rem;
  line-height: 1;
  color: rgba(200, 169, 110, 0.15);
  margin-bottom: -20px;
  user-select: none;
}

.bio-quote-text {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.5vw, 2.2rem);
  font-style: italic;
  line-height: 1.6;
  color: var(--gold-light);
  position: relative;
  z-index: 2;
  font-weight: 300;
}

/* Bio Materials Section */
.bio-materials-section {
  padding: 100px 60px;
  background: var(--black);
}

.bio-materials-container {
  max-width: 1200px;
  margin: 0 auto;
}

.bio-materials-header {
  text-align: center;
  margin-bottom: 64px;
}

.bio-materials-header h2 {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--white);
  margin-bottom: 16px;
}

.bio-materials-header .divider {
  width: 60px;
  height: 1px;
  background: var(--gold);
  margin: 0 auto;
}

.bio-materials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.bio-material-card {
  background: var(--dark);
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 40px 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.bio-material-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.bio-material-card:hover::before {
  transform: scaleX(1);
}

.bio-material-card:hover {
  background: var(--dark-2);
  border-color: rgba(200, 169, 110, 0.2);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.bio-mat-icon {
  font-size: 2.2rem;
  color: var(--gold);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
}

.bio-mat-icon svg {
  stroke: var(--gold);
}

.bio-material-card h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--white);
  margin-bottom: 16px;
  font-weight: 500;
}

.bio-material-card p {
  font-family: var(--font-body);
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--light-gray);
}

/* Responsive biography */
@media (max-width: 1024px) {
  .bio-materials-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 900px) {
  .bio-story-section,
  .bio-materials-section {
    padding: 80px 40px;
  }
  .bio-story-container {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .bio-image-wrapper {
    max-width: 450px;
    margin: 0 auto;
  }
  .bio-materials-header h2 {
    font-size: 2rem;
  }
}

@media (max-width: 600px) {
  .bio-story-section,
  .bio-materials-section {
    padding: 60px 20px;
  }
  .bio-materials-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .bio-material-card {
    padding: 30px 24px;
  }
  .bio-hero h1 {
    font-size: 2.2rem;
  }
  .bio-hero-ornament {
    font-size: 0.65rem;
    letter-spacing: 0.25em;
  }
  .bio-story-content h2 {
    font-size: 1.8rem;
  }
}