body {
  background: none;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  /* Arka plan görseli ve koyuluk için değişken tanımı */
  --bg-darkness: 0.9; /* 0 ile 1 arası, 1 tamamen siyah, 0 tamamen şeffaf */
}
.bg-image-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(rgba(0,0,0,var(--bg-darkness)), rgba(0,0,0,var(--bg-darkness))), url('https://i.ytimg.com/vi/x076bAjLo14/maxresdefault.jpg') center center / cover no-repeat;
  transition: --bg-darkness 0.3s;
}
.main-bg, #app, .container {
  position: relative;
  z-index: 1;
}
.site-title {
  letter-spacing: 1px;
  color: #1a2233;
  text-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.event-card.pro-card {
  transition: transform 0.25s cubic-bezier(.4,2,.6,1), box-shadow 0.25s;
  box-shadow: 0 4px 24px 0 rgba(30,34,90,0.10);
  border: none;
  border-radius: 20px;
  overflow: hidden;
  background: #fff;
  margin-bottom: 10px;
  min-height: 500px;
}
.event-card.pro-card:hover {
  transform: translateY(-8px) scale(1.035);
  box-shadow: 0 12px 32px 0 rgba(30,34,90,0.18);
}
.event-card img, .event-img {
/*   height: 270px; */
  object-fit: cover;
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
}
.event-badge {
  background: #f3f6fa;
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 0.98rem;
  color: #1a2233;
  font-weight: 500;
  box-shadow: 0 1px 4px rgba(30,34,90,0.04);
}
.card-title {
  color: #1a2233;
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.5px;
  margin-bottom: 1.2rem !important;
}
.card-text, .text-secondary {
  color: #5a6270 !important;
}
.card-body {
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
}
.d-flex.justify-content-between.align-items-center.mb-2 > span {
  width: 48%;
}
.d-flex.align-items-center.mb-4.text-secondary.small.w-100.justify-content-center {
  margin-bottom: 2rem !important;
}
.pro-btn {
  background: linear-gradient(90deg, #1e3c72 0%, #2a5298 100%);
  border: none;
  font-weight: 600;
  font-size: 1.08rem;
  letter-spacing: 0.5px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(30,34,90,0.08);
  transition: background 0.2s, box-shadow 0.2s;
}
.pro-btn:hover, .pro-btn:focus {
  background: linear-gradient(90deg, #2a5298 0%, #1e3c72 100%);
  box-shadow: 0 4px 16px rgba(30,34,90,0.13);
}
@media (max-width: 767px) {
  .event-card img, .event-img {
    /* height: 170px; */
  }
  .event-card.pro-card {
    min-height: 370px;
  }
  .site-title {
    font-size: 1.5rem;
  }
}