:root {
    --primary-color: #00d338;
    --primary-dark: #c5c5c5;
    --primary-light: rgba(117, 117, 117, 0.1);
    --bg-primary: #1a1a1a;
    --bg-secondary: #2a2a2a;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --border-color: #404040;
}

body.light-mode {
    --bg-primary: #f5f5f5;
    --bg-secondary: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
}

body.light-mode .navbar {
    background-color: #ffffff !important;
    border-bottom: 1px solid #8d8b8b;
}

body.light-mode .navbar-dark .navbar-nav .nav-link {
    color: #1a1a1a !important;
}

body.light-mode .navbar-dark .navbar-nav .nav-link:hover {
    color: var(--text-secondary) !important;
}

body.light-mode .navbar-toggler {
    border-color: var(--primary-color) !important;
    color: var(--primary-color) !important;
}

body.light-mode .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2300d338' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

section {
    padding: 0 2rem;
    margin-left: auto;
    margin-right: auto;
    max-width: 1200px;
}

a {
    text-decoration: none !important;
    color: inherit;
}

.page-hero {
    padding: 3rem 2rem 2rem 2rem;
    text-align: center;
    margin-bottom: 3rem;
    border-bottom: 1px solid var(--border-color);
}

.page-hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    background-clip: text;
}

.page-hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    margin-bottom: 2rem;
}

.quick-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
    padding: 0 2rem;
    margin-left: auto;
    margin-right: auto;
    max-width: 1200px;
}

.quick-link-card {
    background-color: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-bottom: 2px solid var(--border-color);
    border-radius: 10px;
    padding: 1.5rem;
    text-decoration: none !important;
    color: var(--text-primary);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 150px;
    cursor: pointer;
}

.quick-link-title {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.quick-link-description {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.quick-link-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-6px);
    background-color: var(--primary-light);
}

.about-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
    padding: 0 2rem;
    margin-left: auto;
    margin-right: auto;
    max-width: 1200px;
}

.info-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    margin-left: auto;
    margin-right: auto;
    max-width: 600px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.07);
}

.about-cards-grid .info-card {
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
    margin-bottom: 0;
}

.info-card:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.info-card h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.contact-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
    padding: 0 2rem;
    margin-left: auto;
    margin-right: auto;
    max-width: 1200px;
}


.contact-card {
    background-color: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    padding: 1.5rem;
    text-decoration: none !important;
    color: var(--text-primary);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 150px;
    cursor: pointer;
}

.contact-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-6px);
    background-color: var(--primary-light);
}

.back-button {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    background: #404040;
    color: white !important;
    text-decoration: none !important;
    border-radius: 8px;
    border-color: 2px solid var(--border-color);
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border: 2px;
    margin-top: 2rem;
    margin-left: 2rem;
}

.back-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
    color: white !important;
}

.back-button:active {
    transform: translateY(-1px);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.tech-item {
    background-color: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.tech-item:hover {
    border-color: var(--primary-color);
    background-color: var(--primary-light);
}

.tech-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.tech-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.project-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

.project-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 1.5rem;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.project-header h5 {
    margin: 0;
    font-size: 1.3rem;
}

.project-body {
    padding: 1.5rem;
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.tag {
    background-color: var(--primary-light);
    color: var(--primary-color);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--primary-color);
}

.tag:hover {
    background-color: var(--primary-color);
    color: var(--bg-primary);
}


.project-tags {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background-color: var(--primary-light);
    color: var(--primary-color);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.dark-mode-btn {
  position: fixed;
  bottom: 40px;
  right: 20px;
  
  padding: 12px 15px;
  background-color: #1a1a1a;
  color: white;
  border-radius: 50%; 
  cursor: pointer;
  z-index: 1000;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
  transition: transform 0.3s ease;
}

.dark-mode-btn:hover {
  transform: scale(1.1);
}

#theme-toggle i.bi-sun-fill {
  color: #1a1a1a;
}

nav select {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  padding: 0.5rem 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.95rem;
  transition: all 0.3s ease;
}

nav select:hover {
  border-color: var(--primary-color);
  box-shadow: 0 0 8px rgba(0, 211, 56, 0.3);
}

nav select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 12px rgba(0, 211, 56, 0.5);
}

body.light-mode nav select {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid #00d338;
}

body.dark-theme {
  background-color: #121212;
  color: #ffffff;
}

/* Mobil responsive ayarları */
@media (max-width: 768px) {
  .dark-mode-btn {
    bottom: 20px;
    left: auto;
    right: 20px;
    padding: 10px 12px;
  }
  
  .page-hero h1 {
    font-size: 2rem;
  }
  
  section {
    padding: 0 1rem;
  }
}