/* Doç. Dr. Ahmet Yılmaz — Ana Stil Dosyası */
@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;600;700&family=Source+Sans+3:ital,wght@0,300;0,400;0,600;0,700;1,400&display=swap');

:root {
  /* Bordo */
  --color-primary: #8B1A1A;
  --color-primary-dark: #6B1212;
  --color-primary-light: #A52024;
  /* Lacivert */
  --color-navy: #0F1F3D;
  --color-navy-light: #1A3058;
  /* Siyah & beyaz zemin */
  --color-black: #0A0A0A;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F5F7FA;
  --color-text: #0A0A0A;
  --color-text-muted: #4B5563;
  --color-white: #FFFFFF;
  /* Vurgu — altın yerine lacivert (eski gold referansları uyumlu kalır) */
  --color-gold: #0F1F3D;
  --color-gold-light: #1A3058;
  --font-heading: 'Cinzel', Georgia, serif;
  --font-body: 'Source Sans 3', system-ui, sans-serif;
  --header-height: 110px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(15, 31, 61, 0.08);
  --shadow-lg: 0 12px 48px rgba(15, 31, 61, 0.12);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-navy);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 100px 0; }
.section--dark { background: var(--color-navy); color: var(--color-white); }
.section--dark h2, .section--dark h3 { color: var(--color-white); }
.section--alt { background: var(--color-bg-alt); }

.section-header { text-align: center; margin-bottom: 60px; }
.section-header .label {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}
.section-header h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); margin-bottom: 16px; }
.section-header p { color: var(--color-text-muted); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(15, 31, 61, 0.08);
  z-index: 1000;
  transition: box-shadow var(--transition), background var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow); }
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo-link { display: flex; align-items: center; gap: 12px; }
.logo-link img { height: 96px; width: auto; max-width: min(220px, 52vw); }

.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav a {
  padding: 8px 16px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: 8px;
  transition: all var(--transition);
}
.main-nav a:hover, .main-nav a.active {
  color: var(--color-primary);
  background: rgba(139, 26, 26, 0.06);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-navy);
  margin: 6px 0;
  transition: var(--transition);
}

/* Hero */
.hero {
  min-height: auto;
  display: block;
  align-items: unset;
  position: relative;
  background: linear-gradient(135deg, #FFFFFF 0%, #F8F9FC 55%, #F0F2F8 100%);
  overflow: hidden;
  padding-top: var(--header-height);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(139, 26, 26, 0.15) 0%, transparent 60%);
  pointer-events: none;
}
.hero-ekg {
  position: absolute;
  bottom: 15%;
  left: 0;
  right: 0;
  height: 80px;
  opacity: 0.2;
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-content { color: var(--color-text); }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(139, 26, 26, 0.06);
  border: 1px solid rgba(139, 26, 26, 0.15);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--color-primary);
  margin-bottom: 12px;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  color: var(--color-navy);
  margin-bottom: 12px;
}
.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
  line-height: 1.75;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual { display: flex; justify-content: center; align-items: center; }
.hero-visual img { max-height: 380px; filter: drop-shadow(0 20px 40px rgba(0,0,0,0.3)); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(139, 26, 26, 0.35);
}
.btn-outline {
  background: transparent;
  color: var(--color-navy);
  border: 2px solid rgba(15, 31, 61, 0.25);
}
.btn-outline:hover {
  border-color: var(--color-navy);
  background: rgba(15, 31, 61, 0.04);
  color: var(--color-navy);
}
.btn-gold {
  background: var(--color-navy);
  color: var(--color-white);
}
.btn-gold:hover {
  background: var(--color-navy-light);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border: 1px solid rgba(11, 20, 38, 0.04);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.card-icon {
  width: 56px;
  height: 56px;
  background: rgba(139, 26, 26, 0.08);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-primary);
}
.card h3 { font-size: 1.2rem; margin-bottom: 12px; }
.card p { color: var(--color-text-muted); font-size: 0.95rem; }

/* Vaka cards */
.vaka-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}
.vaka-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.vaka-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.vaka-card-image {
  height: 220px;
  background: linear-gradient(135deg, var(--color-navy-light), var(--color-primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.vaka-card-image img { width: 100%; height: 100%; object-fit: cover; }
.vaka-card-image .placeholder-icon { color: rgba(255,255,255,0.3); width: 64px; height: 64px; }
.vaka-card-body { padding: 24px; }
.vaka-card-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(139, 26, 26, 0.08);
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 50px;
  margin-bottom: 12px;
}
.vaka-card h3 { font-size: 1.15rem; margin-bottom: 8px; }
.vaka-card p { color: var(--color-text-muted); font-size: 0.9rem; margin-bottom: 16px; }
.vaka-card-link {
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* MHRS Band */
.mhrs-band {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  padding: 48px 0;
  text-align: center;
  color: var(--color-white);
}
.mhrs-band h3 { color: var(--color-white); font-size: 1.5rem; margin-bottom: 12px; }
.mhrs-band p { opacity: 0.85; margin-bottom: 24px; max-width: 600px; margin-left: auto; margin-right: auto; }
.mhrs-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.mhrs-buttons .btn { background: var(--color-white); color: var(--color-primary); }
.mhrs-buttons .btn:hover { background: var(--color-navy); color: var(--color-white); }

/* Footer */
.site-footer {
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand img { height: 140px; margin-bottom: 24px; max-width: none; }
.footer-brand p { font-size: 0.9rem; line-height: 1.8; }
.footer-col h4 {
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: 20px;
  font-family: var(--font-body);
  font-weight: 600;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: rgba(255, 255, 255, 0.7); font-size: 0.9rem; }
.footer-col a:hover { color: var(--color-white); }
.footer-social { display: flex; gap: 12px; margin-top: 16px; }
.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  transition: all var(--transition);
}
.footer-social a:hover { background: var(--color-primary); color: var(--color-white); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
}

/* Forms */
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 0.9rem;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--color-bg-alt);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color var(--transition);
  background: var(--color-white);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
}
.form-group textarea { min-height: 140px; resize: vertical; }
.form-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}
.form-check input { margin-top: 4px; width: auto; }

/* Page hero (inner pages) */
.page-hero {
  padding: 160px 0 80px;
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
  text-align: center;
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}
.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--color-primary), var(--color-gold), var(--color-primary), transparent);
}
.page-hero h1 { color: var(--color-white); font-size: clamp(2rem, 4vw, 2.8rem); margin-bottom: 12px; }
.page-hero p { color: rgba(255, 255, 255, 0.7); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
}
.about-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--color-navy);
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-image img { max-height: 320px; }
.about-content h2 { margin-bottom: 20px; }
.about-content p { margin-bottom: 16px; color: var(--color-text-muted); }
.expertise-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 24px;
}
.expertise-list li {
  list-style: none;
  padding: 12px 16px;
  background: var(--color-bg);
  border-radius: var(--radius);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 10px;
}
.expertise-list li::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  flex-shrink: 0;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-info-card {
  background: var(--color-white);
  padding: 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}
.contact-info-card h3 { font-size: 1.1rem; margin-bottom: 12px; }
.contact-info-card p, .contact-info-card a { color: var(--color-text-muted); }

/* Filters */
.filter-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 10px 24px;
  border: 2px solid var(--color-bg-alt);
  background: var(--color-white);
  border-radius: 50px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: var(--color-white);
}

/* Vaka detail */
.vaka-detail-header { margin-bottom: 40px; }
.vaka-detail-meta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 16px; }
.vaka-detail-content { max-width: 800px; margin: 0 auto; }
.vaka-detail-content p { margin-bottom: 16px; color: var(--color-text-muted); }
.vaka-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin: 40px 0;
}
.vaka-gallery img {
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform var(--transition);
  aspect-ratio: 4/3;
  object-fit: cover;
  width: 100%;
}
.vaka-gallery img:hover { transform: scale(1.03); }
.vaka-video {
  margin: 40px 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--color-navy);
}
.vaka-video iframe, .vaka-video video { width: 100%; height: 100%; border: none; }

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.lightbox.active { display: flex; }
.lightbox img { max-height: 90vh; max-width: 90vw; border-radius: var(--radius); }
.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 2rem;
  cursor: pointer;
}

/* KVKK banner */
.kvkk-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.85);
  padding: 16px 24px;
  z-index: 999;
  display: none;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 0.9rem;
}
.kvkk-banner.show { display: flex; }
.kvkk-banner a { color: rgba(255, 255, 255, 0.95); }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--color-text-muted);
}
.empty-state svg { width: 64px; height: 64px; margin: 0 auto 16px; opacity: 0.3; }

/* 404 */
.error-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
}
.error-page h1 { font-size: 6rem; color: var(--color-primary); margin-bottom: 16px; }

/* Responsive */
@media (max-width: 968px) {
  .hero .container { grid-template-columns: 1fr; text-align: center; }
  .hero-visual { order: -1; }
  .hero-visual img { max-height: 240px; }
  .hero-actions { justify-content: center; }
  .about-grid, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
  .expertise-list { grid-template-columns: 1fr; }
}

@media (max-width: 968px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 24px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    opacity: 0;
    transition: all var(--transition);
    pointer-events: none;
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .vaka-grid, .card-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

.form-feedback {
  padding: 14px 18px;
  border-radius: 12px;
  margin-bottom: 20px;
  font-size: 0.95rem;
}
.form-feedback--success {
  background: rgba(34, 139, 34, 0.12);
  color: #1a6b1a;
  border: 1px solid rgba(34, 139, 34, 0.25);
}
.form-feedback--error {
  background: rgba(165, 32, 36, 0.1);
  color: var(--color-primary);
  border: 1px solid rgba(165, 32, 36, 0.25);
}