/**
 * ============================================================================
 * zaferkaya.com.tr - Bileşen Stilleri
 * ============================================================================
 * Header, footer, kartlar, butonlar, hero, timeline, istatistik vb.
 * ============================================================================
 */

/* ============================================================================
 * HEADER — Sticky Glass Navigation
 * ============================================================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  height: var(--header-height);
  transition: height var(--transition-base), background var(--transition-base), box-shadow var(--transition-base);
}

.site-header.scrolled {
  height: var(--header-height-scrolled);
  background: var(--bg-glass);
  backdrop-filter: blur(var(--glass-blur-heavy));
  -webkit-backdrop-filter: blur(var(--glass-blur-heavy));
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--section-px);
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.site-logo:hover {
  color: var(--color-primary);
}

.site-logo img {
  height: 40px;
  width: auto;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-name {
  font-size: var(--text-md);
  font-weight: var(--font-bold);
}

.logo-tagline {
  font-family: var(--font-accent);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--color-primary);
  letter-spacing: var(--tracking-wide);
}

/* Ana navigasyon */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-link {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-glow);
}

/* Header aksiyonları */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Mobil menü toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: var(--space-2);
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.nav-toggle:hover {
  border-color: var(--color-primary);
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobil navigasyon */
@media (max-width: 991px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--space-8) var(--section-px);
    background: var(--bg-overlay);
    backdrop-filter: blur(var(--glass-blur-heavy));
    -webkit-backdrop-filter: blur(var(--glass-blur-heavy));
    transform: translateX(100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-slow), opacity var(--transition-slow), visibility var(--transition-slow);
  }

  .main-nav.open {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    width: 100%;
    gap: var(--space-2);
  }

  .nav-link {
    padding: var(--space-4);
    font-size: var(--text-md);
    width: 100%;
    text-align: center;
  }

  .header-actions .btn-cv {
    display: none;
  }
}

/* ============================================================================
 * BUTONLAR
 * ============================================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-accent);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  line-height: 1;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Primary — Elektrik mavisi */
.btn-primary {
  color: var(--color-black);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  color: var(--color-black);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-lg);
  filter: brightness(1.1);
}

/* Outline */
.btn-outline {
  color: var(--color-primary);
  background: transparent;
  border-color: var(--border-color-accent);
}

.btn-outline:hover {
  color: var(--color-accent);
  background: rgba(var(--color-primary-rgb), 0.1);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-glow);
}

/* Ghost */
.btn-ghost {
  color: var(--text-secondary);
  background: transparent;
  border-color: transparent;
}

.btn-ghost:hover {
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.08);
}

/* CV İndir butonu */
.btn-cv {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

/* Büyük CTA */
.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

/* Küçük */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

/* İkon buton */
.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* ============================================================================
 * KARTLAR — Glassmorphism
 * ============================================================================ */

.card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--card-padding);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  border-color: var(--bg-glass-border-hover);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.card-glass {
  background: var(--glass-bg);
}

.card-interactive:hover {
  transform: translateY(-4px);
}

/* Kart başlık */
.card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  font-size: 1.5rem;
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.1);
  border: 1px solid var(--border-color-accent);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  transition: box-shadow var(--transition-base);
}

.card:hover .card-icon {
  box-shadow: var(--shadow-glow);
}

.card-title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.card-text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* Proje kartı */
.project-card {
  position: relative;
  overflow: hidden;
  padding: 0;
  min-height: 280px;
}

.project-card-image {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.project-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.project-card-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(to top, rgba(10, 14, 23, 0.95) 0%, rgba(10, 14, 23, 0.4) 50%, transparent 100%);
}

.project-card-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  height: 100%;
  min-height: 280px;
  padding: var(--space-6);
  box-sizing: border-box;
}

.project-card-category {
  font-family: var(--font-accent);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.project-card-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

.project-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.tag {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
}

/* ============================================================================
 * HERO BÖLÜMÜ
 * ============================================================================ */

.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: var(--z-particles);
  pointer-events: none;
}

#particles-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  pointer-events: none;
}

.hero-gradient-orb-1 {
  width: 500px;
  height: 500px;
  background: rgba(var(--color-primary-rgb), 0.15);
  top: -10%;
  right: -5%;
}

.hero-gradient-orb-2 {
  width: 400px;
  height: 400px;
  background: rgba(99, 102, 241, 0.1);
  bottom: 10%;
  left: -10%;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
  width: 100%;
}

.hero-text {
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-accent);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--color-primary);
  margin-bottom: var(--space-6);
}

.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--color-primary);
  animation: pulse-dot 2s ease-in-out infinite;
}

.hero-title {
  font-size: var(--text-5xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
}

.hero-subtitle {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
}

.hero-slogan {
  font-size: var(--text-md);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
  max-width: 520px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.hero-network-svg {
  width: 100%;
  max-width: 500px;
  height: auto;
  opacity: 0.9;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-muted);
  font-size: var(--text-xs);
  animation: bounce-soft 2s ease-in-out infinite;
}

.hero-scroll-indicator .scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
}

@media (max-width: 991px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-text {
    max-width: 100%;
    margin: 0 auto;
  }

  .hero-slogan {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta {
    justify-content: center;
  }

  .hero-visual {
    display: none;
  }
}

/* ============================================================================
 * İSTATİSTİK SAYAÇLARI
 * ============================================================================ */

.stats-section {
  position: relative;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--grid-gap);
}

.stat-card {
  text-align: center;
  padding: var(--space-8) var(--space-4);
}

.stat-icon {
  font-size: 2rem;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  opacity: 0.8;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-value .stat-suffix {
  color: var(--color-primary);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

@media (max-width: 767px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-value {
    font-size: var(--text-3xl);
  }
}

/* ============================================================================
 * UZMANLIK KARTLARI
 * ============================================================================ */

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--grid-gap);
}

.expertise-card {
  position: relative;
  overflow: hidden;
}

.expertise-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

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

/* Ana sayfa & projeler listesi — eşit 3 sütun grid */
.projects-showcase-grid,
.projects-page-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--grid-gap);
  align-items: stretch;
}

.projects-showcase-grid .project-card,
.projects-page-grid .project-card {
  min-height: 300px;
  height: 100%;
}

.projects-showcase-grid .project-card-content,
.projects-page-grid .project-card-content {
  min-height: 300px;
  padding: var(--space-5);
}

.projects-showcase-grid .project-card-tags,
.projects-page-grid .project-card-tags {
  margin-top: auto;
  padding-top: var(--space-3);
}

/* Uzmanlık sayfası — tek kompakt grid */
.expertise-grid-page {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}

.expertise-card-category {
  display: block;
  font-family: var(--font-accent);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  line-height: 1.3;
}

.expertise-grid-page .expertise-card {
  display: flex;
  flex-direction: column;
  min-height: 220px;
  padding: var(--space-5);
}

.expertise-grid-page .expertise-card .card-icon {
  width: 44px;
  height: 44px;
  font-size: 1.25rem;
  margin-bottom: var(--space-3);
  flex-shrink: 0;
}

.expertise-grid-page .expertise-card .card-title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
  line-height: 1.35;
}

.expertise-grid-page .expertise-card .card-text {
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.55;
}

.section-compact {
  padding-top: var(--space-8);
  padding-bottom: var(--space-10);
}

@media (max-width: 991px) {
  .projects-showcase-grid,
  .projects-page-grid,
  .expertise-grid-page {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 575px) {
  .projects-showcase-grid,
  .projects-page-grid,
  .expertise-grid-page {
    grid-template-columns: 1fr;
  }

  .projects-showcase-grid .project-card,
  .projects-page-grid .project-card,
  .projects-showcase-grid .project-card-content,
  .projects-page-grid .project-card-content {
    min-height: 260px;
  }
}

/* ============================================================================
 * TEKNOLOJİ GRID (Hex / Terminal)
 * ============================================================================ */

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: var(--space-4);
}

.tech-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-5) var(--space-3);
  text-align: center;
  border-radius: var(--radius-lg);
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.tech-item:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.tech-item i,
.tech-item img {
  font-size: 2rem;
  width: 40px;
  height: 40px;
  object-fit: contain;
  color: var(--color-primary);
}

.tech-item span {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
}

/* Terminal stil tech stack */
.tech-terminal {
  background: var(--color-black);
  border: 1px solid var(--border-color-accent);
  border-radius: var(--radius-lg);
  overflow: hidden;
  font-family: 'Courier New', monospace;
}

.tech-terminal-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-navy);
  border-bottom: 1px solid var(--border-color);
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.terminal-dot.red   { background: #EF4444; }
.terminal-dot.yellow { background: #F59E0B; }
.terminal-dot.green  { background: #10B981; }

.tech-terminal-body {
  padding: var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-primary);
  line-height: 1.8;
}

.tech-terminal-body .prompt {
  color: var(--text-muted);
}

.tech-terminal-body .command {
  color: var(--color-accent);
}

/* ============================================================================
 * ÇALIŞMA SÜRECİ
 * ============================================================================ */

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--grid-gap);
  position: relative;
}

.process-grid::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity: 0.3;
}

.process-step {
  text-align: center;
  position: relative;
}

.process-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  background: var(--bg-glass);
  border: 2px solid var(--border-color-accent);
  border-radius: 50%;
  position: relative;
  z-index: 1;
  transition: box-shadow var(--transition-base);
}

.process-step:hover .process-number {
  box-shadow: var(--shadow-glow);
}

.process-title {
  font-size: var(--text-md);
  margin-bottom: var(--space-2);
}

.process-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

@media (max-width: 991px) {
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-grid::before {
    display: none;
  }
}

@media (max-width: 479px) {
  .process-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================================
 * TIMELINE
 * ============================================================================ */

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: var(--space-8);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-navy-light));
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-10);
  padding-left: var(--space-8);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: calc(-1 * var(--space-8) - 5px);
  top: 4px;
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border: 3px solid var(--bg-body);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--color-primary-glow);
}

.timeline-year {
  font-family: var(--font-accent);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.timeline-title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-1);
}

.timeline-company {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}

.timeline-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* ============================================================================
 * REFERANSLAR / TESTIMONIALS
 * ============================================================================ */

.testimonial-slider {
  overflow: hidden;
  position: relative;
}

.testimonial-track {
  display: flex;
  gap: var(--grid-gap);
  transition: transform var(--transition-slow);
}

.testimonial-card {
  flex: 0 0 calc(33.333% - var(--space-4));
  min-width: 300px;
}

.testimonial-content {
  font-size: var(--text-md);
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  line-height: var(--leading-relaxed);
}

.testimonial-content::before {
  content: '"';
  font-size: var(--text-3xl);
  color: var(--color-primary);
  line-height: 0;
  vertical-align: -0.4em;
  margin-right: var(--space-1);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border-color-accent);
}

.testimonial-name {
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
}

.testimonial-role {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* ============================================================================
 * SERTİFİKA KARTLARI
 * ============================================================================ */

.certificate-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--grid-gap);
}

.certificate-card {
  text-align: center;
}

.certificate-image {
  width: 100%;
  height: 160px;
  object-fit: contain;
  margin-bottom: var(--space-4);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  padding: var(--space-4);
}

.certificate-issuer {
  font-size: var(--text-xs);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-1);
}

.certificate-title {
  font-size: var(--text-md);
  margin-bottom: var(--space-2);
}

.certificate-date {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* ============================================================================
 * BLOG KARTLARI
 * ============================================================================ */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--grid-gap);
}

.blog-card {
  padding: 0;
  overflow: hidden;
}

.blog-card-image {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.blog-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.blog-card-body {
  padding: var(--space-5);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}

.blog-card-title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
  transition: color var(--transition-fast);
}

.blog-card:hover .blog-card-title {
  color: var(--color-primary);
}

.blog-card-excerpt {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

.blog-read-more {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

/* ============================================================================
 * İLETİŞİM BÖLÜMÜ
 * ============================================================================ */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-12);
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.contact-info-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  font-size: 1.25rem;
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.1);
  border: 1px solid var(--border-color-accent);
  border-radius: var(--radius-md);
}

.contact-info-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-1);
}

.contact-info-value {
  font-size: var(--text-md);
  color: var(--text-primary);
}

.contact-info-value a {
  color: inherit;
}

.contact-info-value a:hover {
  color: var(--color-primary);
}

.contact-map {
  margin-top: var(--space-8);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-color);
  aspect-ratio: 16 / 6;
}

.contact-map iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

@media (max-width: 991px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================================
 * FOOTER
 * ============================================================================ */

.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  padding: var(--space-16) 0 var(--space-8);
  margin-top: var(--space-16);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer-brand p {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: var(--space-4);
  max-width: 300px;
}

.footer-title {
  font-family: var(--font-accent);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--text-primary);
  margin-bottom: var(--space-5);
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: var(--space-3);
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--text-secondary);
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 1.1rem;
  transition: all var(--transition-fast);
}

.social-link:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding-top: var(--space-8);
  border-top: 1px solid var(--border-color);
}

.footer-copyright {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-6);
}

.footer-bottom-links a {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

@media (max-width: 991px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 479px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

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

/* ============================================================================
 * TEMA DEĞİŞTİRİCİ
 * ============================================================================ */

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 1.1rem;
}

.theme-toggle:hover {
  color: var(--color-primary);
  border-color: var(--border-color-accent);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  transition: transform var(--transition-base), opacity var(--transition-base);
}

[data-theme="dark"] .theme-toggle .icon-sun,
[data-theme="light"] .theme-toggle .icon-moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-moon,
[data-theme="light"] .theme-toggle .icon-sun {
  display: block;
}

/* ============================================================================
 * SAYFA BAŞLIĞI (İç sayfalar)
 * ============================================================================ */

.page-hero {
  padding-top: calc(var(--header-height) + var(--space-12));
  padding-bottom: var(--space-12);
  text-align: center;
  background: var(--bg-section-alt);
  border-bottom: 1px solid var(--border-color);
}

.page-hero-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.page-hero-desc {
  font-size: var(--text-md);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================================================
 * GALERİ
 * ============================================================================ */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--space-4);
}

.gallery-item {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: var(--radius-lg);
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery-item:hover img {
  transform: scale(1.08);
}

.gallery-item-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  padding: var(--space-4);
  background: linear-gradient(to top, rgba(10, 14, 23, 0.8), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.gallery-item:hover .gallery-item-overlay {
  opacity: 1;
}

.gallery-item-title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-white);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 14, 23, 0.95);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

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

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: var(--radius-lg);
}

.lightbox-close {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.lightbox-close:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ============================================================================
 * LOGO İKON (görsel yoksa)
 * ============================================================================ */

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-size: 1.5rem;
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.1);
  border: 1px solid var(--border-color-accent);
  border-radius: var(--radius-md);
}

/* ============================================================================
 * BREADCRUMB SECTION
 * ============================================================================ */

.breadcrumb-section {
  padding-top: calc(var(--header-height) + var(--space-6));
  padding-bottom: var(--space-4);
}

.page-hero + .breadcrumb-section,
.breadcrumb-section + .section {
  padding-top: var(--space-6);
}

/* ============================================================================
 * YUKARI ÇIK BUTONU
 * ============================================================================ */

.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--bg-glass);
  border: 1px solid var(--border-color-accent);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  font-size: 1.25rem;
  cursor: pointer;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base), opacity var(--transition-base);
  opacity: 0;
  pointer-events: none;
}

.back-to-top:not([hidden]) {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

/* ============================================================================
 * ERİŞİLEBİLİRLİK — Skip link focus
 * ============================================================================ */

.sr-only-focusable:focus {
  position: fixed;
  top: var(--space-4);
  left: var(--space-4);
  z-index: 9999;
  width: auto;
  height: auto;
  padding: var(--space-3) var(--space-5);
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: nowrap;
  background: var(--color-primary);
  color: var(--color-black);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-md);
  text-decoration: none;
}