:root {
    --bg-color: #f9fafb;
    --text-color: #2d3748;
    --nav-bg: #ffffff;
    --button-bg: #3b82f6;
    --button-hover-bg: #2563eb;
    --card-bg: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

body.dark-mode {
    --bg-color: #111827;
    --text-color: #d1d5db;
    --nav-bg: #1f2937;
    --button-bg: #60a5fa;
    --button-hover-bg: #3b82f6;
    --card-bg: #1f2937;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.3s, color 0.3s;
    filter: blur(8px);
    opacity: 0;
    transition: filter 1.5s ease, opacity 1.5s ease;
}

body.loaded {
    filter: blur(0);
    opacity: 1;
}


nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: var(--nav-bg);
    box-shadow: 0 2px 4px var(--shadow-color);
    position: sticky;
    top: 0;
}

nav .logo {
    font-size: 1.5rem;
    font-weight: bold;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    margin: 0;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    position: relative;
   
}

nav ul li a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 2px;
    background: var(--button-bg);
    transition: width 0.3s ease;
}

nav ul li a:hover::after {
    width: 100%;

    
    
    
}

nav ul li a:hover {
    color: var(--button-bg);
}

.nav-buttons {
    display: flex;
    gap: 1rem;
}

nav button#language-toggle,
nav button#theme-toggle {
    padding: 0.5rem 1rem;
    background-color: var(--button-bg);
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s;
}

nav button#theme-toggle {
    padding: 0.5rem;
    font-size: 1rem;
}

nav button#language-toggle:hover,
nav button#theme-toggle:hover {
    background-color: var(--button-hover-bg);
}

.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background-color: var(--bg-color);
    padding: 0 2rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--button-bg);
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    transition: background-color 0.3s;
}

.cta-button:hover {
    background-color: var(--button-hover-bg);
}

.section {
    padding: 4rem 2rem;
    text-align: center;
}

.section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.portfolio-item {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px var(--shadow-color);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.portfolio-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

    
}

.form-container {
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-container input,
.form-container textarea {
    padding: 0.75rem;
    border: 1px solid #ccc;
    border-radius: 8px;
    background-color: var(--card-bg);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

.form-container button {
    padding: 0.75rem;
    background-color: var(--button-bg);
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.form-container button:hover {
    background-color: var(--button-hover-bg);
}

#form-message {
    margin-top: 1rem;
    font-size: 1rem;
    text-align: center;
}

#form-message.success {
    color: #2ecc71;
}

#form-message.error {
    color: #e74c3c;
}

footer {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--bg-color);
    transition: background-color 0.3s;
}

.social-links {
    margin-top: 1rem;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.social-icon {
    font-size: 1.5rem;
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s;
}

.social-icon:hover {
    color: var(--button-bg);
}

.social-icon.linkedin:hover {
    color: #0a66c2;
}

.social-icon.twitter:hover {
    color: #000000;
}

.social-icon.github:hover {
    color: #181717;
}

.social-icon.instagram:hover {
    color: #e1306c;
}







@keyframes gorunum {
  0% {
    border-color: #0066ff;
  }
 15% {
    border-color: #ff6600;
  }
    30% {
        border-color: #00cc66;
    }
    45% {
        border-color: #ff0000;
    }
    60% {
        border-color: #b499e098;
    }
    75% {
        border-color: #ff00cc;
    }
    90% {
        border-color: #00ccff;
    }
    100% {
        border-color: #ffcc00;
    }

}

div.portfolio-item {
    border: 2px solid #0066ff;
    border-radius: 8px;
    padding: 1.5rem;
    animation: gorunum 12s infinite alternate;
}

@keyframes cevirigorunum {
     0% {
    nav: #0066ff;
    }
    15% {
    nav: #ff6600;
    }
    20% {
        nav: #fbff17;
    }
    30% {
        nav: #00cc66;
    }
    45% {
        nav: #ff0000;
    }
    60% {
        nav: #b499e098;
    }
    75% {
        nav: #ff00cc;
    }
    80% {
        nav: #00ccff;
    }
    90% {
        nav: #772e2e;
    }
    100% {
        nav: #ffcc00;
    }



}
nav button#language-toggle,
nav button#theme-toggle {
    border: 2px solid #cadaf3;
    animation: gorunum 24s infinite alternate;
}


.project-card {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  transition: transform 0.4s ease;
}

.project-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.project-card:hover img {
  transform: scale(1.1);
}

.overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.65);
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 1rem;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.project-card:hover .overlay {
  opacity: 1;
}

.overlay h3 {
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.overlay p {
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.overlay .buttons a {
  display: inline-block;
  margin: 0 0.5rem;
  padding: 0.5rem 1rem;
  background: #3b82f6;
  color: #fff;
  border-radius: 6px;
  text-decoration: none;
  font-size: 0.9rem;
  transition: background 0.3s;
}

.overlay .buttons a:hover {
  background: #2563eb;
}


.swiper-button-next,
.swiper-button-prev {
  color: #fff; /* Beyaz oklar */
}

.swiper-pagination-bullet {
  background: #fff; /* Altındaki küçük noktalar */
}