/* === KAĞIT - Stil Dosyası === */
/* Editorial, refined, siyah-beyaz */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,300;9..144,400;9..144,500;9..144,600;9..144,700;9..144,800&family=Inter+Tight:wght@300;400;500;600;700&display=swap');

:root {
  --siyah: #0a0a0a;
  --beyaz: #ffffff;
  --gri-100: #f5f5f4;
  --gri-200: #e7e5e4;
  --gri-300: #d6d3d1;
  --gri-400: #a8a29e;
  --gri-500: #78716c;
  --gri-600: #57534e;
  --gri-700: #44403c;
  --gri-800: #292524;
  --gri-900: #1c1917;

  --font-baslik: 'Fraunces', Georgia, serif;
  --font-govde: 'Inter Tight', -apple-system, sans-serif;

  --gecis: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --gecis-hizli: 0.2s ease-out;
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-govde);
  background: var(--beyaz);
  color: var(--siyah);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* === Üst Bar === */
.ust-bar {
  border-bottom: 1px solid var(--gri-200);
  padding: 1.25rem 0;
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 100;
}

.ust-bar-icerik {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-baslik);
  font-weight: 700;
  font-size: 1.5rem;
  font-style: italic;
  letter-spacing: -0.02em;
  font-variation-settings: 'opsz' 144;
}

.logo-alt {
  font-family: var(--font-govde);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gri-500);
  margin-left: 0.5rem;
  font-style: normal;
}

/* === Ana Bölüm === */
.ana {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding: 3rem 1.5rem 4rem;
}

/* === Geri Butonu === */
.geri {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--gri-500);
  margin-bottom: 2rem;
  transition: color var(--gecis-hizli);
}

.geri:hover {
  color: var(--siyah);
}

.geri::before {
  content: '←';
  font-size: 1rem;
}

/* === Sayfa Başlığı === */
.sayfa-baslik {
  margin-bottom: 3.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--gri-200);
}

.kucuk-etiket {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gri-500);
  margin-bottom: 0.75rem;
}

.buyuk-baslik {
  font-family: var(--font-baslik);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.03em;
  font-variation-settings: 'opsz' 144;
}

.buyuk-baslik em {
  font-style: italic;
  font-weight: 300;
}

.alt-baslik {
  margin-top: 1rem;
  font-size: 1.05rem;
  color: var(--gri-600);
  max-width: 600px;
}

/* === Kartlar Grid === */
.kart-grid {
  display: grid;
  gap: 1px;
  background: var(--gri-200);
  border: 1px solid var(--gri-200);
}

.kart-grid.kolon-2 {
  grid-template-columns: repeat(2, 1fr);
}

.kart-grid.kolon-3 {
  grid-template-columns: repeat(3, 1fr);
}

.kart-grid.kolon-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
  .kart-grid.kolon-3,
  .kart-grid.kolon-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .kart-grid.kolon-2,
  .kart-grid.kolon-3,
  .kart-grid.kolon-4 {
    grid-template-columns: 1fr;
  }
}

/* === Tek Kart === */
.kart {
  background: var(--beyaz);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 180px;
  position: relative;
  transition: background var(--gecis-hizli);
  cursor: pointer;
  text-align: left;
  width: 100%;
}

.kart:hover:not(.kart-pasif) {
  background: var(--siyah);
  color: var(--beyaz);
}

.kart-numara {
  font-family: var(--font-baslik);
  font-size: 0.85rem;
  color: var(--gri-400);
  font-variant-numeric: tabular-nums;
}

.kart:hover:not(.kart-pasif) .kart-numara {
  color: var(--gri-500);
}

.kart-baslik {
  font-family: var(--font-baslik);
  font-size: 1.65rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-top: auto;
  font-variation-settings: 'opsz' 144;
}

.kart-aciklama {
  font-size: 0.85rem;
  color: var(--gri-500);
  margin-top: 0.5rem;
  line-height: 1.4;
}

.kart:hover:not(.kart-pasif) .kart-aciklama {
  color: var(--gri-400);
}

.kart-pasif {
  cursor: not-allowed;
  opacity: 0.4;
}

.kart-pasif::after {
  content: 'Yakında';
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gri-500);
  border: 1px solid var(--gri-300);
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
}

/* === PDF Kart (Konu sayfası) === */
.pdf-kart {
  background: var(--beyaz);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 200px;
  text-align: left;
  width: 100%;
  transition: background var(--gecis-hizli);
}

.pdf-kart:hover {
  background: var(--gri-100);
}

.pdf-ust {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.pdf-numara {
  font-family: var(--font-baslik);
  font-size: 2rem;
  font-weight: 300;
  font-style: italic;
  font-variation-settings: 'opsz' 144;
  color: var(--siyah);
  line-height: 1;
}

.pdf-soru-sayi {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gri-500);
  border: 1px solid var(--gri-300);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
}

.pdf-baslik {
  font-family: var(--font-baslik);
  font-size: 1.15rem;
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-top: auto;
}

.pdf-indir {
  margin-top: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--siyah);
  border-top: 1px solid var(--gri-200);
  padding-top: 1rem;
  transition: gap var(--gecis-hizli);
}

.pdf-indir::after {
  content: '↓';
  font-size: 1rem;
  transition: transform var(--gecis-hizli);
}

.pdf-kart:hover .pdf-indir {
  gap: 0.75rem;
}

.pdf-kart:hover .pdf-indir::after {
  transform: translateY(2px);
}

/* === Boş Durum === */
.bos-durum {
  text-align: center;
  padding: 5rem 2rem;
  color: var(--gri-500);
}

.bos-durum-baslik {
  font-family: var(--font-baslik);
  font-size: 1.5rem;
  color: var(--siyah);
  margin-bottom: 0.5rem;
  font-style: italic;
}

/* === Alt Bilgi === */
.alt-bilgi {
  border-top: 1px solid var(--gri-200);
  padding: 2rem 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--gri-500);
  letter-spacing: 0.05em;
}

.alt-bilgi-icerik {
  max-width: 1200px;
  margin: 0 auto;
}

.alt-bilgi p + p {
  margin-top: 0.5rem;
}

/* === Yükleniyor === */
.yukleniyor {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--gri-400);
  font-style: italic;
  font-family: var(--font-baslik);
}

/* === Animasyonlar === */
@keyframes yumusak-giris {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.kart, .pdf-kart {
  animation: yumusak-giris 0.5s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

.kart:nth-child(1), .pdf-kart:nth-child(1) { animation-delay: 0.05s; }
.kart:nth-child(2), .pdf-kart:nth-child(2) { animation-delay: 0.1s; }
.kart:nth-child(3), .pdf-kart:nth-child(3) { animation-delay: 0.15s; }
.kart:nth-child(4), .pdf-kart:nth-child(4) { animation-delay: 0.2s; }
.kart:nth-child(5), .pdf-kart:nth-child(5) { animation-delay: 0.25s; }
.kart:nth-child(6), .pdf-kart:nth-child(6) { animation-delay: 0.3s; }

/* === Mobil === */
@media (max-width: 768px) {
  .ana {
    padding: 2rem 1.25rem 3rem;
  }

  .sayfa-baslik {
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
  }

  .kart {
    padding: 1.5rem 1.25rem;
    min-height: 140px;
  }

  .kart-baslik {
    font-size: 1.35rem;
  }

  .pdf-kart {
    padding: 1.25rem;
    min-height: auto;
  }
}