/* ==========================================================================
   BİLEŞENLER (COMPONENTS)
   ========================================================================== */

/* -----------------------------------------
   1. NAVBAR (ÜST MENÜ)
   ----------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(6, 9, 19, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: background-color var(--transition-normal), 
              border-color var(--transition-normal), 
              box-shadow var(--transition-normal),
              padding var(--transition-normal);
  padding: 18px 0;
}

.site-header.scrolled {
  background-color: rgba(5, 10, 18, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  padding: 12px 0;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--text-heading);
}

.brand-logo-img {
  height: 40px;
  width: auto;
  max-width: 44px;
  object-fit: contain;
  border-radius: var(--radius-xs);
  transition: transform var(--transition-fast);
}

.brand-logo:hover .brand-logo-img {
  transform: scale(1.05);
}

.brand-text-group {
  display: flex;
  flex-direction: column;
}

.brand-text-main {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #ffffff;
  line-height: 1.1;
}

.brand-text-sub {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-link {
  font-size: 0.93rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.88);
  position: relative;
  padding: 6px 0;
  transition: color var(--transition-fast);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.6);
}

.nav-link:hover,
.nav-link.active {
  color: #ffffff;
  text-shadow: 0 0 8px rgba(56, 189, 248, 0.6);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-fast);
  border-radius: var(--radius-pill);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Mobil Hamburger Butonu */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  cursor: pointer;
  z-index: 1100;
}

.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--text-heading);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-fast);
}

.mobile-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.mobile-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobil Menü Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 300px;
  height: 100vh;
  background-color: var(--bg-surface);
  border-left: 1px solid var(--border-medium);
  padding: 90px 30px 40px 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  z-index: 1050;
  transition: right var(--transition-normal);
  box-shadow: -15px 0 40px rgba(0, 0, 0, 0.6);
}

.mobile-drawer.open {
  right: 0;
}

.mobile-drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  z-index: 1040;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

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

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.mobile-nav-link {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-body);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-light);
}

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

/* -----------------------------------------
   2. BUTONLAR (BUTTONS)
   ----------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn svg {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.btn:hover svg {
  transform: translateX(3px);
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.btn-primary:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: var(--bg-surface-elevated);
  color: var(--text-heading);
  border: 1px solid var(--border-medium);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.btn-secondary:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--color-primary-light);
  transform: translateY(-3px);
  color: #ffffff;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
}

.btn-secondary:active {
  transform: translateY(0);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-heading);
  border: 1px solid var(--border-medium);
}

.btn-outline:hover {
  background-color: var(--bg-surface);
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-3px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.025rem;
  font-weight: 700;
}

.btn-block {
  width: 100%;
}

/* -----------------------------------------
   3. ROZETLER (BADGES - SPACE GROTESK)
   ----------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  font-family: var(--font-badge);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-pill);
}

.badge-tech {
  background-color: rgba(37, 99, 235, 0.15);
  color: #60A5FA;
  border: 1px solid rgba(37, 99, 235, 0.35);
}

.badge-career {
  background-color: rgba(56, 189, 248, 0.15);
  color: #38BDF8;
  border: 1px solid rgba(56, 189, 248, 0.35);
}

.badge-workshop {
  background-color: rgba(148, 163, 184, 0.15);
  color: #E2E8F0;
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.badge-hackathon {
  background-color: rgba(99, 102, 241, 0.15);
  color: #A5B4FC;
  border: 1px solid rgba(99, 102, 241, 0.35);
}

/* -----------------------------------------
   4. FİLTRELEME SEKMELERİ
   ----------------------------------------- */
.filter-tabs-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.filter-tab {
  padding: 9px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-tab:hover {
  color: var(--text-heading);
  border-color: var(--border-medium);
  background-color: var(--bg-surface-elevated);
}

.filter-tab.active {
  color: #ffffff;
  background-color: var(--color-primary);
  border-color: var(--color-primary-light);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

/* -----------------------------------------
   5. MODAL DİYALOGLARI
   ----------------------------------------- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(3, 7, 14, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
  padding: 20px;
}

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

.modal-content {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 580px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 36px;
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transform: translateY(20px) scale(0.97);
  transition: transform var(--transition-normal);
  position: relative;
}

.modal-overlay.active .modal-content {
  transform: translateY(0) scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  color: #ffffff;
  background-color: #ef4444;
  border-color: #ef4444;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 8px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text-heading);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
  background-color: var(--bg-surface);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

/* Toast Bildirimi */
.toast-notification {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 16px 24px;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-lg);
  z-index: 2500;
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-normal);
}

.toast-notification.show {
  transform: translateY(0);
  opacity: 1;
}