@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* ARKA PLANLAR (Derin, Soğuk Gece Mavisi) */
    --bg-primary: #020617;   /* Çok koyu, siyaha yakın mavi */
    --bg-secondary: #0f172a; /* Bir tık açık, kartlar için */
    --bg-tertiary: #1e293b;  /* Başlık çubukları için */
    
    /* VURGU RENKLERİ (Sadece Mavi Tonları - Sarı Yok!) */
    --accent-green: #06b6d4; /* Ana Butonlar ve Vurgular (Camgöbeği/Cyan) */
    --accent-blue: #3b82f6;  /* İkincil detaylar (Elektrik Mavisi) */
    --accent-purple: #60a5fa; /* Üçüncü ton (Açık Gök Mavisi) */
    
    /* METİN RENKLERİ */
    --text-primary: #f0f9ff; /* Buz beyazı */
    --text-secondary: #94a3b8; /* Gri-Mavi metalik yazı */
    --border-color: #1e293b;
    
    /* Kod Renkleri (IDE Görünümü İçin) */
    --code-keyword: #c678dd;
    --code-string: #98c379;
    --code-comment: #5c6370;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Matrix Effect Canvas */
.matrix-bg {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: -1;
    opacity: 0.05; /* Arka planı çok boğmaması için kısık opaklık */
    pointer-events: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* HEADER & NAV */
.header {
    position: fixed;
    top: 0; left: 0; width: 100%;
    background: rgba(2, 6, 23, 0.9); /* Temaya uygun koyu zemin */
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    z-index: 1000;
    padding: 1rem 0;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    color: var(--accent-green);
    font-size: 1.2rem;
}
.logo::before { content: '> '; color: var(--accent-blue); }

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.nav-links a:hover { color: var(--accent-green); }

/* --- HERO BÖLÜMÜ (KARŞILAMA EKRANI) --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    position: relative; 
    z-index: 5;
}

.hero-content {
    max-width: 900px;
    padding-bottom: 2rem;
}

/* Kod Ön Ekleri (const profile = { gibi) */
.code-prefix {
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent-blue);
    margin-bottom: 1rem;
    font-size: 1rem;
}
.keyword { color: var(--accent-purple); }
.variable { color: var(--accent-blue); }
.string { color: #a5d6ff; } /* Mavi tonlu string rengi */
.key { color: var(--accent-green); }
.comment { color: var(--text-secondary); opacity: 0.7; font-style: italic; }

/* 1. Ana Başlık: Digital Creator */
.glitch-title {
    font-size: clamp(3rem, 6vw, 5.5rem);
    line-height: 1.1;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--accent-green);
    letter-spacing: -0.02em;
}

/* 2. Alt Satır: Erasmus+ Coordinator */
.glitch-title span {
    display: block;
    margin-top: 15px; /* Digital Creator ile arasını açar */
    margin-bottom: 15px;
    font-size: 0.5em !important;
    color: var(--text-secondary);
    font-weight: 300;
    line-height: 1.4;
    opacity: 0.9;
}

/* 3. İkinci Başlık: Cyber Security Analyst */
.hero-subtitle {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.4rem;
    color: var(--text-primary);
    margin-top: 3rem; /* Yukarıdaki blokla arasını İYİCE AÇTIK */
    margin-bottom: 2rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    border-left: 2px solid var(--accent-blue);
    padding-left: 15px; /* Sol tarafa çizgi ekleyip vurguladık */
}

/* 4. Kod Kutusu (Code Box) - Geri Getirilen Tasarım */
.code-details {
    background: rgba(15, 23, 42, 0.6); /* Yarı saydam koyu zemin */
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 3px solid var(--accent-green); /* Neon sol çizgi */
    border: 1px solid rgba(255, 255, 255, 0.05); /* İnce çerçeve */
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5); /* Derinlik */
    overflow-x: auto;
}

/* 5. Açıklama Metni */
.hero-description {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-secondary);
    max-width: 700px;
    margin-bottom: 3rem;
}

/* BUTONLAR */
.cta-buttons {
    display: flex;
    gap: 1rem;
    position: relative;
    z-index: 10;
}

.btn {
    padding: 14px 28px;
    border-radius: 6px;
    text-decoration: none;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: rgba(6, 182, 212, 0.1);
    border-color: var(--accent-green);
    color: var(--accent-green);
}
.btn-primary:hover {
    background: var(--accent-green);
    color: #020617; /* Hover olunca yazı siyah olsun */
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.4);
}

.btn-secondary {
    border-color: var(--text-secondary);
    color: var(--text-secondary);
}
.btn-secondary:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

/* PROJECTS SECTION */
.projects { padding: 100px 0; }

.section-title {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}
.section-prefix { color: var(--accent-purple); font-family: 'JetBrains Mono', monospace; }
.section-description { color: var(--text-secondary); max-width: 600px; }
.accent-text { color: var(--accent-green); font-weight: bold; }

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.project-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
    position: relative;
}
.project-card:hover {
    transform: translateY(-7px);
    border-color: var(--accent-green);
    box-shadow: 0 10px 30px rgba(6, 182, 212, 0.15);
}

.project-header {
    background: var(--bg-tertiary);
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.project-dots { display: flex; gap: 6px; }
.terminal-dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27ca3f; }

.project-body { padding: 1.5rem; }
.project-title { 
    color: var(--text-primary); 
    margin-bottom: 10px; 
    font-family: 'JetBrains Mono'; 
    font-size: 1.25rem;
}
.project-card:hover .project-title { color: var(--accent-green); }

.project-description { 
    font-size: 0.95rem; 
    color: var(--text-secondary); 
    margin-bottom: 20px; 
    line-height: 1.6;
}

.project-stack { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.stack-item {
    font-size: 0.75rem;
    padding: 4px 10px;
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
    border-radius: 4px;
    font-family: 'JetBrains Mono';
}

.project-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.9rem;
    margin-right: 15px;
    border-bottom: 1px solid transparent;
    transition: all 0.2s;
}
.project-links a:hover {
    color: var(--accent-green);
    border-bottom-color: var(--accent-green);
}

/* CV SECTION */
.cv-section { padding: 100px 0; background: var(--bg-primary); }

.cv-viewer {
    width: 100%;
    height: 85vh;
    min-height: 800px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-top: 30px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}
.cv-viewer iframe { width: 100%; height: 100%; border: none; }

/* FOOTER */
.footer {
    padding: 3rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: 50px;
    background: var(--bg-secondary);
}
.social-links { margin-top: 1.5rem; display: flex; justify-content: center; gap: 20px; }
.social-links a { 
    color: var(--text-secondary); 
    font-size: 1.5rem; 
    transition: transform 0.3s, color 0.3s;
}
.social-links a:hover { 
    color: var(--accent-green); 
    transform: translateY(-3px);
}

/* SCROLLBAR */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { 
    background: var(--bg-tertiary); 
    border-radius: 5px; 
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-blue); }

/* Responsive Adjustments */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero { padding-top: 120px; align-items: flex-start; }
    .hero h1 { font-size: 2.8rem; }
    .cv-viewer { height: 60vh; min-height: 500px; }
    .cta-buttons { flex-direction: column; width: 100%; }
    .btn { width: 100%; justify-content: center; }
}