/* Google Fonts İçe Aktarma */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* Global Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* Tipografi */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-title);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

/* Konteyner */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Butonlar */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-family: var(--font-title);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.95rem;
  gap: 8px;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--text-light);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-accent {
  background-color: var(--accent);
  color: var(--text-light);
}

.btn-accent:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(34, 197, 94, 0.25);
}

.btn-secondary {
  background-color: var(--secondary);
  color: hsl(220, 45%, 15%);
}

.btn-secondary:hover {
  background-color: var(--secondary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(245, 158, 11, 0.25);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--border-color);
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background-color: rgba(var(--primary-rgb), 0.03);
}

/* Header & Navigasyon */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--glass-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition);
}

header.scrolled {
  box-shadow: var(--shadow-md);
  padding: 8px 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  transition: var(--transition);
}

header.scrolled .nav-container {
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--text-primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-weight: 800;
  font-size: 1.25rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 0;
}

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

.nav-link:hover {
  color: var(--text-primary);
}

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

.nav-link.active {
  color: var(--text-primary);
  font-weight: 600;
}

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

/* Tema Değiştirici Buton */
.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  transition: var(--transition);
}

.theme-toggle:hover {
  background-color: var(--border-color);
}

.theme-toggle .sun-icon {
  display: none;
}

.dark-theme .theme-toggle .moon-icon,
[data-theme="dark"] .theme-toggle .moon-icon {
  display: none;
}

.dark-theme .theme-toggle .sun-icon,
[data-theme="dark"] .theme-toggle .sun-icon {
  display: block;
}

/* Mobil Menü Butonu */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  width: 40px;
  height: 40px;
  cursor: pointer;
  position: relative;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  position: absolute;
  left: 8px;
  transition: var(--transition);
}

.menu-toggle span:nth-child(1) { top: 14px; }
.menu-toggle span:nth-child(2) { top: 20px; }
.menu-toggle span:nth-child(3) { top: 26px; }

.menu-toggle.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Main Padding for Fixed Header */
main {
  margin-top: 80px;
  flex: 1;
}

/* Kartlar (Global Glassmorphism) */
.card {
  background-color: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

/* Footer */
footer {
  background-color: hsl(220, 45%, 10%);
  color: hsl(220, 20%, 80%);
  padding: 64px 0 32px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-about p {
  margin: 16px 0;
  font-size: 0.95rem;
  color: hsl(220, 15%, 70%);
}

.footer-socials {
  display: flex;
  gap: 16px;
}

.social-link {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background-color: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: var(--transition);
}

.social-link:hover {
  background-color: var(--accent);
  transform: translateY(-2px);
}

.footer-title {
  color: #fff;
  font-family: var(--font-title);
  font-size: 1.1rem;
  margin-bottom: 24px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: hsl(220, 15%, 70%);
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.footer-contact li svg {
  margin-top: 4px;
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: hsl(220, 15%, 60%);
}

/* Bildirim/Alert Tasarımı */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.toast {
  background-color: var(--bg-secondary);
  border-left: 4px solid var(--primary);
  box-shadow: var(--shadow-lg);
  padding: 16px 24px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 300px;
  transform: translateY(100px);
  opacity: 0;
  animation: slideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  transition: var(--transition);
}

.toast.success { border-left-color: var(--accent); }
.toast.warning { border-left-color: var(--secondary); }
.toast.error { border-left-color: hsl(0, 84%, 60%); }

@keyframes slideIn {
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Mobil Responsive Ayarları */
@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  
  .nav-links {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 32px;
    gap: 24px;
    box-shadow: var(--shadow-md);
    transform: translateY(-150%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
  }
  
  header.scrolled .nav-links {
    top: 64px;
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  
  .nav-actions {
    margin-left: auto;
    margin-right: 16px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}