/* Genel Stil ve Değişkenler */
:root {
  --bg-dark: #0d1117;
  --glass-bg: rgba(22, 27, 34, 0.5);
  --glass-border: rgba(255, 255, 255, 0.08);
  --neon-purple: #8a2be2;
  --neon-blue: #00d2ff;
  --text-main: #f0f6fc;
  --text-muted: #8b949e;
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  /* Arka plana yumuşak neon parıltılar */
  background-image: 
    radial-gradient(circle at 15% 20%, rgba(138, 43, 226, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 85% 70%, rgba(0, 210, 255, 0.12) 0%, transparent 40%);
  background-attachment: fixed;
  padding-top: 100px; /* Fixed navbar için alan */
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* Genel Glass Panel / Kart Yapısı */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 24px; /* Büyük border-radius */
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Hero Kartı */
.hero-card {
  padding: 3.5rem 2.5rem;
  text-align: center;
  margin-bottom: 2.5rem;
}

.hero-title {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.neon-text {
  background: linear-gradient(135deg, var(--neon-purple), var(--neon-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 12px rgba(138, 43, 226, 0.3));
}

.hero-description {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 650px;
  margin: 0 auto 2rem auto;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

/* Butonlar */
.btn {
  padding: 0.8rem 1.8rem;
  border-radius: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--neon-purple), #5b1da8);
  color: #fff;
  box-shadow: 0 0 15px rgba(138, 43, 226, 0.4);
}

.btn-primary:hover {
  box-shadow: 0 0 25px rgba(138, 43, 226, 0.7);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Grid Düzeni ve İkincil Kartlar */
.grid-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.card {
  padding: 2rem;
  position: relative;
}

.card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 210, 255, 0.3);
  box-shadow: 0 12px 40px 0 rgba(0, 210, 255, 0.15);
}

.card-tag {
  display: inline-block;
  font-size: 0.75rem;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 8px;
  background: rgba(138, 43, 226, 0.2);
  color: #c084fc;
  border: 1px solid rgba(138, 43, 226, 0.3);
  margin-bottom: 1rem;
}

.card-tag.accent {
  background: rgba(0, 210, 255, 0.2);
  color: #38bdf8;
  border-color: rgba(0, 210, 255, 0.3);
}

.card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.8rem;
}

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

.card-link {
  color: var(--neon-blue);
  text-decoration: none;
  font-weight: 600;
  transition: gap 0.3s ease;
}

.card-link:hover {
  text-shadow: 0 0 8px rgba(0, 210, 255, 0.5);
}