/* Main CSS - Base Styles and Variables */
:root {
  --bg: #0a0a0a;
  --surface: #111111;
  --surface-light: #1a1a1a;
  --surface-lighter: #222222;
  --text: #ffffff;
  --text-muted: #888888;
  --text-light: #cccccc;
  --primary: #ffffff;
  --primary-muted: #e0e0e0;
  --accent: #666666;
  --border: #333333;
  --border-light: #444444;
  --shadow: rgba(0, 0, 0, 0.4);
  --shadow-lg: rgba(0, 0, 0, 0.6);
  --gradient: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
}

* { 
  box-sizing: border-box; 
}

html, body { 
  height: 100%; 
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--gradient);
  line-height: 1.5;
  font-weight: 400;
}

body {
  padding-top: 64px; /* Header yüksekliği kadar padding */
}

.container { 
  width: min(1000px, 90%); 
  margin: 0 auto; 
  padding: 0 24px; 
}

/* Base Button Styles */
.btn { 
  display: inline-flex; 
  align-items: center; 
  padding: 10px 16px; 
  border-radius: 6px; 
  text-decoration: none; 
  font-weight: 500; 
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
  font-size: 14px;
}

.btn-large { 
  padding: 12px 20px; 
  font-size: 15px; 
}

.btn-primary { 
  background: var(--primary); 
  color: var(--bg); 
  box-shadow: 0 4px 16px rgba(255, 255, 255, 0.2);
  font-weight: 600;
  border: 1px solid var(--primary);
}

.btn-primary:hover { 
  background: var(--primary-muted); 
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.3);
  border-color: var(--primary-muted);
}

.btn-secondary { 
  background: var(--surface-light); 
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover { 
  background: var(--surface-lighter); 
  border-color: var(--border-light);
}

.btn-ghost { 
  color: var(--text-muted); 
  border: 1px solid var(--border); 
  background: transparent;
}

.btn-ghost:hover { 
  border-color: var(--border-light); 
  color: var(--text); 
  background: var(--surface-light);
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-header h2 {
  font-size: clamp(24px, 3vw, 32px);
  margin: 0 0 12px;
  font-weight: 600;
}

.section-header p {
  font-size: 16px;
  color: var(--text-muted);
  margin: 0;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .container {
    width: min(900px, 92%);
  }
}

@media (max-width: 768px) {
  .container {
    width: min(700px, 95%);
    padding: 0 16px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
}