:root {
  --bg: #0a0118;
  --ink: #f5f0ff;
  --ink-dim: #b9a9d9;
  --pink: #ff2e9a;
  --orange: #ff7a3d;
  --violet: #7b2ff7;
  --cyan: #21e6c1;
  --surface: rgba(255,255,255,0.05);
  --border: rgba(255,255,255,0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Plus Jakarta Sans', sans-serif;
  overflow-x: hidden;
  position: relative;
}

h1, h2, h3 { font-family: 'Unbounded', sans-serif; margin: 0; text-wrap: balance; }

.aurora-bg {
  position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none;
}
.blob {
  position: absolute; border-radius: 50%; filter: blur(110px); opacity: 0.55;
  animation: drift 22s ease-in-out infinite alternate;
}
.blob-1 { width: 620px; height: 620px; background: var(--pink); top: -180px; left: -120px; }
.blob-2 { width: 560px; height: 560px; background: var(--violet); top: 20%; right: -160px; animation-delay: -6s; }
.blob-3 { width: 500px; height: 500px; background: var(--cyan); bottom: -200px; left: 30%; animation-delay: -12s; }
@keyframes drift {
  0% { transform: translate(0,0) scale(1); }
  100% { transform: translate(40px,-30px) scale(1.08); }
}
.grain {
  position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 3px 3px;
}
@media (prefers-reduced-motion: reduce) { .blob { animation: none; } }

.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 48px;
  background: linear-gradient(rgba(6,1,15,0.72), rgba(6,1,15,0.5));
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.brand { font-family: 'Unbounded', sans-serif; font-weight: 700; font-size: 1.15rem; letter-spacing: 0.02em; text-shadow: 0 1px 8px rgba(0,0,0,0.4); }
.brand-mark { color: var(--pink); margin-right: 6px; }
nav a {
  color: var(--ink); text-decoration: none; margin-left: 32px; font-weight: 700; font-size: 0.95rem;
  transition: color 0.2s; text-shadow: 0 1px 10px rgba(0,0,0,0.55);
}
nav a:hover { color: var(--cyan); }

main { position: relative; z-index: 2; }

.hero {
  max-width: 900px; margin: 0 auto; padding: 100px 24px 140px; text-align: center;
}
.eyebrow {
  text-transform: uppercase; letter-spacing: 0.16em; font-size: 0.8rem; font-weight: 800;
  color: #5ffbe0; margin: 0 0 24px; display: inline-block;
  padding: 8px 18px; border-radius: 999px;
  background: rgba(6,1,15,0.55); border: 1px solid rgba(95,251,224,0.3);
  text-shadow: 0 1px 6px rgba(0,0,0,0.5);
}
.hero h1 { font-size: clamp(2.6rem, 6vw, 4.4rem); line-height: 1.08; font-weight: 900; }
.gradient-text {
  background: linear-gradient(100deg, var(--pink), var(--orange) 45%, var(--violet) 90%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub {
  max-width: 620px; margin: 32px auto 0; color: var(--ink-dim); font-size: 1.1rem; line-height: 1.6;
}
.cta-btn {
  display: inline-block; margin-top: 40px; padding: 16px 36px; border-radius: 999px;
  background: linear-gradient(100deg, var(--pink), var(--violet));
  color: #fff; text-decoration: none; font-weight: 700; font-size: 1rem;
  box-shadow: 0 12px 40px -12px rgba(255,46,154,0.55);
  transition: transform 0.2s ease;
}
.cta-btn:hover { transform: translateY(-2px); }

.etkinlikler-section, .modules-section { max-width: 1160px; margin: 0 auto; padding: 40px 24px 100px; }
.etkinlikler-section h2, .modules-section h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem); text-align: center; margin-bottom: 48px;
}

.filter-tabs { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 36px; }
.filter-tab {
  padding: 9px 20px; border-radius: 999px; border: 1px solid var(--border); background: rgba(255,255,255,0.04);
  color: var(--ink-dim); font-family: 'Plus Jakarta Sans', sans-serif; font-weight: 700; font-size: 0.85rem;
  cursor: pointer; transition: all 0.2s;
}
.filter-tab:hover { color: var(--ink); border-color: var(--cyan); }
.filter-tab.active { background: linear-gradient(100deg, var(--pink), var(--violet)); color: #fff; border-color: transparent; }

.etkinlik-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 28px; }
.etkinlik-card {
  display: block; text-decoration: none; color: var(--ink);
  background: var(--surface); border: 1px solid var(--border); border-radius: 20px;
  overflow: hidden; transition: transform 0.25s ease, border-color 0.25s ease;
}
.etkinlik-card:hover { transform: translateY(-6px); border-color: var(--e-primary, var(--pink)); }
.card-cover {
  height: 160px; background-color: rgba(255,255,255,0.06); background-size: cover; background-position: center;
  background-image: linear-gradient(135deg, var(--e-primary, var(--pink)), var(--e-secondary, var(--violet)));
}
.card-body { padding: 22px 24px 26px; }
.card-tag {
  display: inline-block; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--e-secondary, var(--cyan)); margin-bottom: 10px;
}
.card-body h3 { font-size: 1.25rem; margin-bottom: 8px; }
.card-body p { color: var(--ink-dim); font-size: 0.95rem; margin: 0 0 12px; line-height: 1.5; }
.card-rating { display: block; font-weight: 700; color: #ffc94d; font-size: 0.88rem; margin-bottom: 14px; }
.card-rating-count { color: var(--ink-dim); font-weight: 500; font-size: 0.78rem; }
.card-cta { font-weight: 700; color: var(--e-primary, var(--pink)); font-size: 0.9rem; }
.empty-state { text-align: center; color: var(--ink-dim); }

.modules-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
.module-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 18px; padding: 28px 24px;
}
.module-icon { font-size: 1.4rem; color: var(--orange); }
.module-card h3 { font-size: 1.05rem; margin: 14px 0 8px; }
.module-card p { color: var(--ink-dim); font-size: 0.9rem; line-height: 1.5; margin: 0; }

footer { position: relative; z-index: 2; text-align: center; padding: 40px 24px 60px; color: var(--ink-dim); font-size: 0.85rem; }