/* --- TEMEL AYARLAR VE RENK PALETİ --- */
/* --- KOYU TEMA RENK PALETİ --- */
:root {
    --bg-color: #121418;       /* Çok Koyu Gri (Ana Arka Plan) */
    --surface-color: #1e2128;  /* Koyu Gri (Kartlar ve Menüler) */
    --white: #ffffff;
    --text-dark: #e4e6eb;      /* Açık Gri/Beyaz (Ana Metin) */
    --text-light: #a0a4ab;     /* Soluk Gri (Alt Metinler) */
    --accent-color: #4dabf7;   /* Parlak Mavi (Vurgu Rengi) */
    --accent-hover: #339af0;
    --border-color: #2b2f36;   /* Hafif Kenarlık Çizgileri */
}

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

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

.text-center { text-align: center; }

/* --- DUYURU ŞERİDİ --- */
.top-bar {
    background-color: var(--accent-color);
    color: #000;
    text-align: center;
    padding: 8px 15px;
    font-size: 0.9rem;
    font-weight: 600;
}

/* --- HEADER & NAVİGASYON --- */
.header {
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.flex-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

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

.logo span {
    color: var(--accent-color);
}

.nav-menu ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

.nav-menu a {
    font-weight: 500;
}

.nav-menu a:hover, .nav-menu a.active {
    color: var(--accent-color);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-dark);
}

/* --- HERO SECTION --- */
.hero {
    background-color: var(--surface-color);
    padding: 100px 20px;
    margin-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
    /* Hafif bir arkaplan deseni hissi için */
    background-image: radial-gradient(circle at 50% 50%, rgba(77, 171, 247, 0.05) 0%, transparent 50%);
}

.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 15px;
}

.hero .highlight {
    color: var(--accent-color);
}

.hero p {
    font-size: 1.15rem;
    color: var(--text-light);
    max-width: 650px;
    margin: 0 auto;
}

/* --- ANA LAYOUT --- */
.main-layout {
    display: grid;
    grid-template-columns: 2.5fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.section-title {
    font-size: 1.5rem;
    margin-bottom: 25px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
    display: inline-block;
}

/* --- PROJELER BÖLÜMÜ --- */
.projects-section {
    margin-bottom: 50px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.project-card {
    background-color: var(--surface-color);
    padding: 25px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s, border-color 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
}

.project-icon {
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 15px;
}

.project-card h3 {
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.project-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 15px;
}

.project-link {
    color: var(--accent-color);
    font-size: 0.9rem;
    font-weight: 600;
}

/* --- BLOG KARTLARI --- */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.blog-card {
    background-color: var(--surface-color);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
    border-color: #333842;
}

.blog-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    opacity: 0.8; /* Koyu temada resimlerin çok parlamaması için */
    transition: opacity 0.3s;
}

.blog-card:hover img {
    opacity: 1;
}

.card-content { padding: 20px; }
.card-content h3 { font-size: 1.2rem; margin-bottom: 10px; }
.card-content p { color: var(--text-light); font-size: 0.95rem; margin-bottom: 20px; }

.read-more {
    color: var(--accent-color);
    font-weight: 600;
    font-size: 0.9rem;
}

.read-more:hover { color: var(--accent-hover); }

/* --- SIDEBAR --- */
.widget {
    background-color: var(--surface-color);
    padding: 25px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.widget h3 {
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    font-size: 1.1rem;
}

.category-list { list-style: none; }
.category-list li { margin-bottom: 10px; }
.category-list a { color: var(--text-light); }
.category-list a:hover { color: var(--accent-color); padding-left: 5px; }

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icons a {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background-color: var(--bg-color);
    border-radius: 50%;
    color: var(--text-dark);
}

.social-icons a:hover {
    background-color: var(--accent-color);
    color: #fff;
}

/* --- FOOTER --- */
footer {
    background-color: var(--surface-color);
    padding: 30px 0;
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
}

/* --- RESPONSIVE TASARIM --- */
@media screen and (max-width: 992px) {
    .main-layout { grid-template-columns: 1fr; }
}

@media screen and (max-width: 768px) {
    .menu-toggle { display: block; }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--surface-color);
        border-bottom: 1px solid var(--border-color);
        padding: 20px;
    }

    .nav-menu.show { display: block; }

    .nav-menu ul {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .hero h1 { font-size: 2rem; }
}
/* =========================================
   HAKKIMDA SAYFASI ÖZEL TASARIMI (KOYU TEMA)
   ========================================= */

.about-page {
    margin-top: 40px;
    margin-bottom: 60px;
}

/* Üst Profil Kartı */
.about-hero {
    display: flex;
    align-items: center;
    gap: 30px;
    background-color: var(--surface-color); /* Koyu gri yapıldı */
    padding: 40px;
    border-radius: 8px;
    border: 1px solid var(--border-color); /* Hafif çerçeve eklendi */
    margin-bottom: 40px;
}

.profile-img {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--bg-color); /* Çerçeve rengi arka plana uyduruldu */
}

.about-title h1 {
    font-size: 2.2rem;
    color: var(--accent-color);
    margin-bottom: 5px;
}

.about-title .subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    font-weight: 500;
}

/* Alt İçerik Izgarası */
.about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}

.about-text h2 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-dark);
    border-bottom: 2px solid var(--accent-color);
    display: inline-block;
    padding-bottom: 5px;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.05rem;
    color: var(--text-light);
    line-height: 1.8;
}

/* Sağ Taraf Bilgi Kutuları */
.info-box {
    background-color: var(--surface-color); /* Koyu gri yapıldı */
    padding: 25px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.info-box h3 {
    margin-bottom: 15px;
    font-size: 1.2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

/* Yetkinlik Etiketleri (Skills Tags) */
.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skills-tags span {
    background-color: var(--bg-color);
    color: var(--text-dark);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--border-color); /* Sınır çizgisi eklendi */
    transition: background 0.3s, color 0.3s, border-color 0.3s;
    cursor: default;
}

.skills-tags span:hover {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: #000; /* Mavi arka planda siyah yazı daha net okunur */
}

/* Deneyim Zaman Çizelgesi */
.timeline {
    list-style: none;
}

.timeline li {
    margin-bottom: 15px;
    padding-left: 20px;
    position: relative;
    font-size: 0.95rem;
    color: var(--text-light);
}

.timeline li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    width: 8px;
    height: 8px;
    background-color: var(--accent-color);
    border-radius: 50%;
}

.timeline li strong {
    color: var(--text-dark);
    display: block;
}

/* =========================================
   İLETİŞİM SAYFASI ÖZEL TASARIMI (KOYU TEMA)
   ========================================= */

.contact-page {
    margin-top: 40px;
    margin-bottom: 60px;
}

.contact-hero {
    background-color: var(--surface-color); /* Koyu gri yapıldı */
    padding: 40px 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 40px;
}

.contact-hero h1 {
    font-size: 2.2rem;
    color: var(--accent-color);
    margin-bottom: 10px;
}

.contact-hero p {
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 40px;
}

/* Form Tasarımı */
.contact-form-container {
    background-color: var(--surface-color); /* Koyu gri yapıldı */
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.contact-form-container h2 {
    margin-bottom: 25px;
    font-size: 1.5rem;
    color: var(--text-dark);
    border-bottom: 2px solid var(--accent-color);
    display: inline-block;
    padding-bottom: 5px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-dark);
    font-size: 0.95rem;
}

/* Input ve Textarea Koyu Tema Ayarları */
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    background-color: var(--bg-color); /* Arka plan koyulaştı */
    color: var(--text-dark); /* Yazı rengi açık gri oldu */
    transition: border-color 0.3s, box-shadow 0.3s;
}

/* Placeholder (Yer tutucu metin) rengi */
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #666; 
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(77, 171, 247, 0.2);
}

.submit-btn {
    background-color: var(--accent-color);
    color: #000; /* Mavi üstüne siyah daha okunur */
    border: none;
    padding: 12px 25px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

/* Sağ Taraf: Bilgi Kartları */
.info-card {
    background-color: var(--surface-color); /* Koyu gri yapıldı */
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.info-card h3 {
    margin-bottom: 20px;
    font-size: 1.2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
}

.info-item i {
    font-size: 1.2rem;
    color: var(--accent-color);
    background-color: var(--bg-color);
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    flex-shrink: 0;
    border: 1px solid var(--border-color);
}

.info-item h4 {
    font-size: 1rem;
    color: var(--text-dark);
    margin-bottom: 3px;
}

.info-item p {
    font-size: 0.95rem;
    color: var(--text-light);
}

.social-text {
    font-size: 0.95rem;
    color: var(--text-light);
}

/* Mobil Görünüm Düzenlemeleri */
@media screen and (max-width: 768px) {
    .about-hero {
        flex-direction: column;
        text-align: center;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-hero {
        padding: 30px 15px;
    }
}