/* Temel Renk Paleti */
:root {
    --bg-dark: #121212;
    --text-light: #e0e0e0;
    --text-white: #ffffff;
    --neon-navy: #0032bd;
    --neon-navy-dim: rgba(0, 50, 189, 0.2);
}

html, body {
    overflow-x: hidden;
    width: 100%;
}

html {
    scroll-behavior: smooth;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
}

/* --- Yüzen (Sticky) Navbar --- */
.navbar {
    width: calc(100% - 4rem); /* Sağ ve sol padding boşluklarını hesaba katar */
    max-width: 1200px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    
    /* Ekranı Kesin Olarak Takip Etmesini Sağlayan Kısım */
    position: fixed;
    top: 15px;
    left: 50%;
    transform: translateX(-50%); /* Tam merkeze oturtur */
    z-index: 1000;
    
    /* Buzlu Cam (Glassmorphism) Efekti */
    background-color: rgba(18, 18, 18, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 1rem 2rem;
    border-radius: 12px;
    border: 1px solid var(--neon-navy-dim);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

/* Logo Düzeni */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 80px;
    width: auto;
    filter: drop-shadow(0 0 8px var(--neon-navy));
    transition: filter 0.3s ease;
}

.logo-img:hover {
    filter: drop-shadow(0 0 15px var(--neon-navy));
}

.logo-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
}

.logo-text .name {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--text-white);
    letter-spacing: 1px;
}

.logo-text .nickname {
    font-size: 1.2rem;
    color: var(--neon-navy);
    font-weight: bold;
    letter-spacing: 1px;
    text-shadow: 0 0 1px var(--neon-navy);
    margin-top: 2px;
}

/* --- MASAÜSTÜ Menü (Nav Links) --- */
.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-light);
    font-weight: 500;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

.nav-links a:hover {
    color: var(--text-white);
    text-shadow: 0 0 8px var(--neon-navy);
}

/* Hamburger Menü (Masaüstünde Gizli) */
.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    z-index: 100;
}

.hamburger .bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-white);
    border-radius: 3px;
    transition: all 0.3s ease;
    box-shadow: 0 0 5px var(--neon-navy);
}

/* Neon Text & Button Efektleri */
.neon-text-logo {
    color: var(--neon-navy);
    text-shadow: 0 0 8px var(--neon-navy);
}

.neon-text-main {
    color: var(--neon-navy);
    text-shadow: 0 0 10px var(--neon-navy), 0 0 15px var(--neon-navy), 0 0 20px var(--neon-navy);
}

.hero {
    text-align: center;
    margin-top: 10rem; /* Menünün altında kalmaması için yeni eklendi */
    margin-bottom: 4rem;
}

.hero h1 {
    font-size: 3.5rem;
    color: var(--text-white);
    margin-bottom: 1.5rem;
}

.neon-button {
    background: transparent;
    color: var(--text-white);
    border: 2px solid var(--neon-navy);
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: bold;
    border-radius: 4px;
    cursor: pointer;
    box-shadow: inset 0 0 10px var(--neon-navy-dim), 0 0 15px var(--neon-navy-dim);
    transition: all 0.3s ease;
}

.neon-button:hover {
    background: var(--neon-navy);
    box-shadow: 0 0 20px var(--neon-navy);
}

/* --- Ortak Başlık Stili --- */
.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
    letter-spacing: 2px;
}

/* Hakkımda Bölümü */
.about-me {
    width: 100%;
    max-width: 1000px;
    text-align: center;
    margin: 0 auto 4rem auto;
    padding: 2.5rem;
    background: #1a1a1a;
    border: 1px solid var(--neon-navy-dim);
    border-radius: 8px;
    box-shadow: inset 0 0 10px var(--neon-navy-dim), 0 0 15px var(--neon-navy-dim);
}

.about-me h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    letter-spacing: 2px;
}

.about-content {
    display: flex;
    align-items: center;
    gap: 3rem;
    text-align: left;
}

.about-image-container {
    flex-shrink: 0;
}

.about-image {
    width: 220px;
    height: 220px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--neon-navy);
    box-shadow: 0 0 15px var(--neon-navy-dim);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-image:hover {
    transform: scale(1.05);
    box-shadow: 0 0 25px var(--neon-navy);
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    text-align: justify;
}

/* --- Yatay Yetenekler Paneli --- */
.skills-panel {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto 4rem auto;
    background: #1a1a1a;
    border: 1px solid var(--neon-navy-dim);
    border-radius: 8px;
    padding: 2.5rem;
    box-shadow: inset 0 0 10px var(--neon-navy-dim), 0 0 15px var(--neon-navy-dim);
}

.skills-container {
    display: flex;
    justify-content: center;
    gap: 4rem;
    flex-wrap: wrap;
}

.skill-group {
    flex: 1;
    min-width: 250px;
    max-width: 320px;
    text-align: center;
}

.skill-category {
    color: var(--neon-navy);
    margin-bottom: 1.2rem;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 1px solid var(--neon-navy-dim);
    padding-bottom: 0.5rem;
}

.skill-tags {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.6rem;
}

.skill-tags li {
    background: rgba(0, 50, 189, 0.05);
    border: 1px solid var(--neon-navy);
    color: var(--text-light);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: default;
    transition: all 0.3s ease;
}

.skill-tags li:hover {
    background: var(--neon-navy);
    color: var(--text-white);
    box-shadow: 0 0 15px var(--neon-navy);
    transform: translateY(-2px);
}

/* --- Projeler Bölümü Düzeni --- */
.projects-section {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 350px));
    gap: 2rem;
    justify-content: center;
    align-items: stretch;
}

.neon-card {
    background: #1a1a1a;
    border: 1px solid var(--neon-navy);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 0 15px var(--neon-navy-dim);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center; 
    text-align: center; 
    opacity: 0; 
}

.neon-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 25px rgba(0, 50, 189, 0.5);
}

.card-image {
    width: 100%;
    height: 150px;
    background: #2a2a2a;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.neon-card h4 {
    color: var(--text-white);
    margin-bottom: 0.5rem;
}

/* Proje Kartları Açılış Animasyonları */
.neon-card:nth-child(1).show { animation: slideFromCenterLeft 0.8s cubic-bezier(0.25, 1, 0.5, 1) forwards; }
.neon-card:nth-child(2).show { animation: fadeCenter 0.8s cubic-bezier(0.25, 1, 0.5, 1) forwards; }
.neon-card:nth-child(3).show { animation: slideFromCenterRight 0.8s cubic-bezier(0.25, 1, 0.5, 1) forwards; }

@keyframes slideFromCenterLeft {
    0% { opacity: 0; transform: translateX(110%); }
    100% { opacity: 1; transform: translateX(0); }
}
@keyframes fadeCenter {
    0% { opacity: 0; transform: scale(0.8); }
    100% { opacity: 1; transform: scale(1); }
}
@keyframes slideFromCenterRight {
    0% { opacity: 0; transform: translateX(-110%); }
    100% { opacity: 1; transform: translateX(0); }
}

/* =========================================
   MOBİL UYUMLULUK (RESPONSIVE) VE MENÜ
========================================= */
@media (max-width: 768px) {
    /* Navbar ve Logo Boyutlandırması */
    .navbar { padding: 1rem; }
    .logo-img { height: 50px; }
    .logo-text .name { font-size: 1rem; }
    .logo-text .nickname { font-size: 0.9rem; }

    /* Hakkımda Bölümü Düzeni */
    .about-content {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
    
    .about-text p {
        text-align: justify;
        text-align-last: center;
    }

    /* MOBİL AÇILIR MENÜ (Hamburger aktif) */
    .hamburger {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        width: 100%;
        height: 100vh;
        background-color: rgba(18, 18, 18, 0.98); 
        flex-direction: column;
        justify-content: center;
        align-items: center;
        
        /* Sağa kaymayı önleyen ve tamamen gizleyen ayarlar */
        transform: translateX(100%);
        visibility: hidden; 
        opacity: 0;
        
        transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
        z-index: 99;
    }

    .nav-links.active {
        transform: translateX(0);
        visibility: visible;
        opacity: 1;
    }

    .nav-links li {
        margin: 1.5rem 0;
    }

    .nav-links a {
        font-size: 1.5rem; 
    }

    /* Hamburger'den X'e Dönüşüm Animasyonu */
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0; 
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
}