/* ========================================
   GLOBAL HYBRID TOC COMPONENT
   Version: 2.0
   ======================================== */

/* ========================================
   PROGRESS BAR (Top)
   ======================================== */

.toc-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--color-border, #e0e0e0);
  z-index: 9999;
  pointer-events: none;
}

.toc-progress-fill {
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--primary-color, #1F4C8A),
    var(--primary-light, #3667a6)
  );
  width: 0%;
  transition: width 0.25s ease;
}

/* ========================================
   DESKTOP SIDEBAR (>1024px)
   ======================================== */

.toc-desktop-sidebar {
  position: fixed;
  left: 20px;
  top: calc(var(--header-height) + 20px); /* Sabit menünün altı — JS ile dinamik ayarlanır */
  width: 280px;
  max-height: calc(100vh - 140px);
  background: white;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  overflow-y: auto;
  display: none;
  z-index: 100;
  opacity: 0; /* İlk başta gizli - JS ile gösterilecek */
  transition: opacity 0.4s ease, transform 0.4s ease, width 0.3s ease, top 0.3s ease;
}

/* TOC ready state - JS ile eklenecek */
.toc-desktop-sidebar.toc-ready {
  opacity: 1;
}

/* Responsive Sidebar Width */
@media (max-width: 1400px) {
  .toc-desktop-sidebar {
    width: 240px;
  }
}

@media (max-width: 1200px) {
  .toc-desktop-sidebar {
    width: 220px;
  }

  .toc-desktop-list .toc-link {
    font-size: var(--fs-2);
    padding: 6px 8px;
  }

  .toc-desktop-sidebar h3 {
    font-size: var(--fs-3);
  }
}

/* Smart hiding when footer approaches */
.toc-desktop-sidebar.toc-hidden-by-footer {
  opacity: 0;
  transform: translateY(-20px);
  pointer-events: none;
}

.toc-desktop-sidebar h3 {
  font-size: var(--fs-4);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted, #666);
  margin: 0 0 16px 0;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border-color, #e0e0e0);
}

.toc-desktop-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc-desktop-list li {
  margin-bottom: 6px;
}

.toc-desktop-list .toc-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  color: var(--text-color, #555);
  text-decoration: none;
  font-size: var(--fs-3);
  border-radius: 6px;
  transition: all 0.2s ease;
  border-left: 3px solid transparent;
}

.toc-desktop-list .toc-link:hover {
  background: #f5f5f5;
  color: var(--primary-color, #1F4C8A);
  padding-left: 14px;
}

.toc-desktop-list .toc-link.active {
  background: var(--tertiary-color, rgba(31, 76, 138, 0.08));
  color: var(--primary-color, #1F4C8A);
  border-left-color: var(--primary-color, #1F4C8A);
  font-weight: 600;
  padding-left: 14px;
}

/* TOC Numbers */
.toc-number {
  width: 24px;
  height: 24px;
  min-width: 24px;
  background: #f0f0f0;
  color: #666;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-7);
  font-weight: 700;
  flex-shrink: 0;
  transition: all 0.2s ease;
}

/* When displaying numbers (not icons/emoji) */
.toc-number:not(:has(i)):not(:has(span)) {
  font-size: var(--fs-1);
}

.toc-number-square {
  width: 24px;
  height: 24px;
  min-width: 24px;
  background: #f0f0f0;
  color: #666;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-1);
  font-weight: 700;
  flex-shrink: 0;
  transition: all 0.2s ease;
}

.toc-desktop-list .toc-link.active .toc-number,
.toc-desktop-list .toc-link.active .toc-number-square {
  background: var(--primary-color, #1F4C8A);
  color: white;
}

.toc-text {
  flex: 1;
  line-height: 1.4;
}

/* Grouped Sections (Desktop) */
.toc-desktop-list .toc-group {
  margin-bottom: 20px;
}

.toc-desktop-list .toc-group-title {
  font-size: var(--fs-1);
  font-weight: 700;
  color: #999;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0 10px 8px;
  margin-bottom: 6px;
}

.toc-desktop-list .toc-group ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

/* Custom Scrollbar */
.toc-desktop-sidebar::-webkit-scrollbar {
  width: 6px;
}

.toc-desktop-sidebar::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 10px;
}

.toc-desktop-sidebar::-webkit-scrollbar-thumb {
  background: var(--primary-color, #1F4C8A);
  border-radius: 10px;
}

.toc-desktop-sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--primary-light, #3667a6);
}

/* ========================================
   MOBILE DRAWER (≤1024px)
   ======================================== */

/* Mobile Toggle Tab (Left Side) */
.toc-mobile-toggle {
  position: fixed;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 100px;
  background: var(--primary-color, #1F4C8A);
  color: white;
  border: none;
  border-radius: 0 8px 8px 0;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: 2px 0 8px rgba(0, 0, 0, 0.15);
  z-index: 998;
  transition: all 0.3s ease;
}

.toc-toggle-text {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: var(--fs-1);
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.toc-mobile-toggle:hover {
  width: 44px;
  box-shadow: 3px 0 12px rgba(0, 0, 0, 0.2);
}

.toc-mobile-toggle.hidden {
  left: -40px;
  opacity: 0;
}

/* Mobile Drawer */
.toc-mobile-drawer {
  position: fixed;
  left: -280px;
  top: var(--header-height); /* Sabit menünün altından başlar — başlığı menü arkasında kalmasın */
  width: 280px;
  height: calc(100vh - var(--header-height));
  background: white;
  box-shadow: 4px 0 16px rgba(0, 0, 0, 0.2);
  z-index: 999;
  transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: none;
  flex-direction: column;
  overflow: hidden;
}

.toc-mobile-drawer.open {
  left: 0;
}

/* Drawer Header */
.toc-drawer-header {
  padding: 20px;
  background: var(--primary-color, #1F4C8A);
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
}

.toc-drawer-header h3 {
  font-size: var(--fs-7);
  font-weight: 700;
  margin: 0;
}

.toc-drawer-close {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-7);
  transition: all 0.2s ease;
}

.toc-drawer-close:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: rotate(90deg);
}

/* Drawer Progress */
.toc-drawer-progress {
  padding: 16px 20px;
  background: #f8f9fa;
  border-bottom: 1px solid var(--color-border, #e0e0e0);
  flex-shrink: 0;
}

.toc-progress-text {
  display: block;
  font-size: var(--fs-1);
  color: #666;
  margin-bottom: 8px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.toc-progress-track {
  width: 100%;
  height: 6px;
  background: #e0e0e0;
  border-radius: 3px;
  overflow: hidden;
}

.toc-progress-fill-drawer {
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--primary-color, #1F4C8A),
    var(--primary-light, #3667a6)
  );
  width: 0%;
  transition: width 0.3s ease;
}

/* Drawer Content */
.toc-drawer-content {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.toc-drawer-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc-drawer-list li {
  margin-bottom: 4px;
}

.toc-drawer-list .toc-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  color: var(--text-color, #555);
  text-decoration: none;
  font-size: var(--fs-4);
  border-radius: 6px;
  transition: all 0.2s ease;
  border-left: 3px solid transparent;
}

.toc-drawer-list .toc-link:hover {
  background: #f5f5f5;
  color: var(--primary-color, #1F4C8A);
}

.toc-drawer-list .toc-link.active {
  background: var(--tertiary-color, rgba(31, 76, 138, 0.08));
  color: var(--primary-color, #1F4C8A);
  border-left-color: var(--primary-color, #1F4C8A);
  font-weight: 600;
}

.toc-drawer-list .toc-link.active .toc-number,
.toc-drawer-list .toc-link.active .toc-number-square {
  background: var(--primary-color, #1F4C8A);
  color: white;
}

/* Grouped Sections (Mobile) */
.toc-drawer-list .toc-group {
  margin-bottom: 20px;
}

.toc-drawer-list .toc-group-title {
  font-size: var(--fs-1);
  font-weight: 700;
  color: #999;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 8px 12px;
  margin-bottom: 4px;
}

.toc-drawer-list .toc-group ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

/* Drawer Content Scrollbar */
.toc-drawer-content::-webkit-scrollbar {
  width: 6px;
}

.toc-drawer-content::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 10px;
}

.toc-drawer-content::-webkit-scrollbar-thumb {
  background: var(--primary-color, #1F4C8A);
  border-radius: 10px;
}

/* Overlay */
.toc-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 998;
  display: none;
}

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

/* ========================================
   RESPONSIVE BREAKPOINTS
   ======================================== */

/* Desktop: Show sidebar */
@media (min-width: 1025px) {
  .toc-desktop-sidebar {
    display: block;
  }

  /* Container header ile aynı genişlikte - TOC'a yer bırakmadan */
  body.has-toc .page-container,
  body.has-toc main.main-container {
    max-width: var(--container-max-width, 1200px);
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* Main content TOC'suz sayfalardaki gibi tam genişlikte */
  body.has-toc .main-content {
    max-width: 100%;
    width: 100%;
  }
}

/* ========================================
   TOC PANELI ICERIGI ORTMESIN
   ========================================
   SORUN (2026-09-04'te olculdu): Panel position:fixed, z-index:100 ve opak
   beyaz; container ise ortalanmis 1200px. Ustteki kural bilerek "TOC'a yer
   birakmadan" yaziyordu, ama bu yalnizca ekran cok genisken calisiyor:
   icerigin sol kenari (vw - 1200) / 2 + 15 iken panelin sag kenari 20 + genislik.
   Ikisi ancak vw >= 1770px'te ayrisiyor. Altindaki HER masaustu genisliginde
   panel metnin uzerine biniyordu.

   Olcum (uyelik-odunc-islemleri.html): 1280px'te 9 metin dugumu panelin altinda
   kaliyordu — "Üyelik Bilgisi" basligi sol=107 iken panelin sagi 260. Ekran
   goruntusunde baslik "...k Materyaller", paragraf "...itesi ogrencileri" diye
   kesiliyordu. 1200 / 1280 / 1366 / 1440 / 1600 px'te dogrulandi.

   COZUM: Panelin sigmadigi genisliklerde container'a soldan yer ayir. 1770px ve
   uzerinde eski (ortalanmis) davranis korunuyor — orada zaten ortusme yok.
   Deger = 20px sol bosluk + panel genisligi + 20px nefes payi.

   IKI FARKLI SAYFA YAPISI VAR: bazi sayfalar .page-container ile
   sarilirken (makale-islem-ucretleri, mendeley-...) digerleri
   main.main-container kullaniyor (uyelik-odunc-islemleri,
   arastirmaci-profili-olusturma). Ilk duzeltme yalnizca birincisini
   kapsadi ve iki sayfa hic duzelmedi; ikisi de secilmeli.
   Panel genisligi ust taraftaki kurallarla ayni esiklerde degisiyor
   (>1400: 280px, 1201-1400: 240px, <=1200: 220px); asagidaki siralama
   genisten dara dogru, sonraki kural oncekini gecersiz kiliyor. */

@media (min-width: 1025px) and (max-width: 1769px) {
  body.has-toc .page-container,
  body.has-toc main.main-container {
    padding-left: 320px;
  }
}

@media (min-width: 1025px) and (max-width: 1400px) {
  body.has-toc .page-container,
  body.has-toc main.main-container {
    padding-left: 280px;
  }
}

@media (min-width: 1025px) and (max-width: 1200px) {
  body.has-toc .page-container,
  body.has-toc main.main-container {
    padding-left: 260px;
  }
}

/* Mobile: Show drawer elements */
@media (max-width: 1024px) {
  .toc-mobile-toggle {
    display: flex;
  }

  .toc-mobile-drawer {
    display: flex;
  }

  .toc-overlay {
    display: block;
  }

  /* Mobile'da padding-left kaldır */
  body.has-toc .page-container,
  body.has-toc main.main-container {
    padding-left: 20px !important;
    padding-right: 10px !important; /* Sağ kenar boşluğu eklendi */
    width: 100%;
    box-sizing: border-box;
  }
}

/* Very small screens */
@media (max-width: 480px) {
  .toc-mobile-drawer {
    width: calc(100vw - 40px);
    left: calc(-100vw + 40px);
  }

  .toc-toggle-text {
    font-size: var(--fs-1);
  }
  
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
  .toc-progress-bar,
  .toc-mobile-toggle,
  .toc-mobile-drawer,
  .toc-desktop-sidebar,
  .toc-overlay {
    display: none !important;
  }

  body.has-toc main.main-container {
    margin-left: 0 !important;
  }
    /* Küçük ekranlarda içerik kesilmesini önle */
  .page-container, .container, .content-wrapper {
    width: 100%;
    max-width: 100%;
    padding-left: 15px !important;
    padding-right: 15px !important;
    box-sizing: border-box;
    overflow-x: hidden;
  }
  
  /* Tüm kartlar ve içerik bölümleri için genişlik kontrolü */
  .card, .info-card, .content-card, section, article {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    margin-left: 0;
    margin-right: 0;
    overflow-x: hidden;
  }
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

/* High contrast mode */
@media (prefers-contrast: high) {
  .toc-desktop-sidebar,
  .toc-mobile-drawer {
    border: 2px solid currentColor;
  }

  .toc-link {
    border: 1px solid transparent;
  }

  .toc-link:focus {
    border-color: currentColor;
    outline: 2px solid currentColor;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .toc-desktop-sidebar,
  .toc-mobile-drawer,
  .toc-overlay,
  .toc-progress-fill,
  .toc-link,
  .toc-drawer-close {
    transition: none !important;
  }
}

/* Focus visible */
.toc-link:focus-visible,
.toc-mobile-toggle:focus-visible,
.toc-drawer-close:focus-visible {
  outline: 2px solid var(--primary-color, #1F4C8A);
  outline-offset: 2px;
}