:root {
  /* Renk Paleti - Premium Karanlık Tema */
  --color-bg: #05070a;
  --color-surface: #0f172a;
  --color-primary: #3b82f6; /* Modern Mavi */
  --color-accent: #fbbf24;  /* Altın/Kehribar Vurgu */
  --color-white: #ffffff;
  --color-text-main: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-navy-dark: #1e293b;
  
  /* Cam Efekti (Glassmorphism) Ayarları */
  --glass-bg: rgba(15, 23, 42, 0.7);
  --glass-bg-strong: rgba(15, 23, 42, 0.9);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);

  /* Tasarım Ölçüleri */
  --container-max: 1200px;
  --radius-lg: 20px;
  --radius-md: 12px;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Dekoratif Arka Plan Balonları */
.blob {
  position: fixed;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(59, 130, 246, 0) 70%);
  border-radius: 50%;
  z-index: -1;
  filter: blur(80px);
}

.blob-1 { top: -100px; right: -100px; }
.blob-2 { 
  bottom: -100px; 
  left: -100px; 
  background: radial-gradient(circle, rgba(251, 191, 36, 0.08) 0%, rgba(251, 191, 36, 0) 70%); 
}

/* Navigasyon Çubuğu Tasarımı */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 70px;
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.nav-container {
  width: 90%;
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Logo Tasarımı */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary), #60a5fa);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.logo-icon i { color: var(--color-white); font-size: 1.5rem; }

.logo-text {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--color-white);
}

.text-primary { color: var(--color-primary); }

/* Karşılama (Hero) Alanı */
.hero {
  padding-top: 160px;
  padding-bottom: 80px;
  text-align: center;
  width: 90%;
  max-width: 900px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
}

.text-accent {
  background: linear-gradient(90deg, var(--color-primary), #60a5fa);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  color: var(--color-text-muted);
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto 48px;
}

/* Cam Efekti Çeşitleri */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
}

.glass-strong {
  background: var(--glass-bg-strong);
  backdrop-filter: blur(40px);
  border: 1px solid var(--glass-border);
}

/* Arama Çubuğu */
.search-container {
  display: flex;
  align-items: center;
  padding: 6px 6px 6px 20px;
  border-radius: 100px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
  max-width: 700px;
  margin: 0 auto;
  transition: var(--transition);
  border: 1px solid var(--glass-border);
}

.search-container:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 20px 50px rgba(59, 130, 246, 0.2);
  transform: translateY(-2px);
}

.search-icon { 
  color: var(--color-text-muted); 
  font-size: 1.4rem; 
  display: flex;
  align-items: center;
}

.search-input {
  flex: 1;
  background: transparent;
  border: none;
  padding: 14px 16px;
  color: var(--color-white);
  font-size: 1.1rem;
  outline: none;
}

.btn-search {
  padding: 14px 32px;
  font-size: 1rem;
}

/* Kontrol Paneli ve Sonuç Sayacı */
.controls-panel {
  margin-top: 20px;
  display: flex;
  justify-content: flex-start;
  animation: fadeInDown 0.5s ease-out;
}

.results-count {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
}

/* Buton Stilleri */
.btn-primary {
  background: var(--color-primary);
  color: white;
  border: none;
  padding: 12px 32px;
  border-radius: 100px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-white);
  border: 1px solid var(--glass-border);
  padding: 12px 32px;
  border-radius: 100px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

/* İçerik Grid Yapısı */
.main-container {
  width: 90%;
  max-width: var(--container-max);
  margin: 0 auto 100px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 32px;
}

/* Kart Tasarımı */
.card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-8px);
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
}

.card-icon {
  width: 48px;
  height: 48px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1.5rem;
}

.card-date { font-size: 0.8rem; color: var(--color-text-muted); }

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-white);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.8em;
}

.card-meta {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.btn-download {
  width: 100%;
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-white);
  border: 1px solid var(--glass-border);
  padding: 12px;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
}

.btn-download:hover { background: var(--color-primary); border-color: var(--color-primary); }

/* Boş Durum (Empty State) İkonu */
.empty-icon-wrapper {
  width: 80px; height: 80px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem; color: var(--color-primary);
  margin: 0 auto 24px;
}

/* Alt Bilgi (Footer) */
.footer { border-top: 1px solid var(--glass-border); padding-top: 60px; background: #020617; }

.footer-bottom { padding: 30px 0; text-align: center; color: var(--color-text-muted); font-size: 0.9rem; }

/* Mobil Uyumluluk (Responsive) */
@media (max-width: 1024px) {
  .hero { width: 95%; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 32px; }
}

@media (max-width: 768px) {
  .hero { padding-top: 130px; padding-bottom: 60px; width: 92%; }
  .hero-title { font-size: 2.3rem; margin-bottom: 24px; letter-spacing: -1px; line-height: 1.2; }
  .search-container { flex-direction: column; border-radius: 24px; padding: 16px; gap: 12px; }
  .search-input { width: 100%; text-align: center; padding: 14px; }
  .btn-primary { width: 100%; padding: 16px; }
  .grid { grid-template-columns: 1fr; gap: 32px; margin-top: 40px; }
  .card { padding: 32px 24px; border-radius: 24px; }
  .card-actions { margin-top: 20px; flex-direction: column; gap: 12px !important; }
}

/* Modallar */
.modal {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.8); backdrop-filter: blur(8px);
  z-index: 2000; display: none; align-items: center; justify-content: center; padding: 20px;
}
.modal.active { display: flex; }
.modal-content {
  width: 100%; max-width: 1000px; height: 90vh;
  border-radius: var(--radius-lg); display: flex; flex-direction: column;
  overflow: hidden; border: 1px solid var(--glass-border);
}
.modal-header { padding: 20px 30px; border-bottom: 1px solid var(--glass-border); display: flex; justify-content: space-between; align-items: center; }
.modal-body { flex: 1; background: #f1f5f9; }
.modal-body iframe { width: 100%; height: 100%; }
.modal-footer { padding: 20px 30px; border-top: 1px solid var(--glass-border); display: flex; justify-content: center; }
.btn-close { background: transparent; border: none; color: var(--color-white); font-size: 1.5rem; cursor: pointer; }

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}