/* SIFIRLAMA VE KÜRESEL AYARLAR */
* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
html { scroll-behavior: smooth; } /* Sayfa içi kaymaların yumuşak olması için */
body { background-color: #f8fafc; color: #1e293b; overflow-x: hidden; }

/* NAVİGASYON BANTI (NAVBAR) */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 8%;
    background-color: #ffffff;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    position: fixed;
    top: 0; left: 0; width: 100%;
    z-index: 9999;
}
.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 800;
    color: #0f172a;
    text-decoration: none;
}
.nav-brand i { color: #0284c7; font-size: 26px; }
.nav-links { display: flex; align-items: center; gap: 30px; list-style: none; }
.nav-links a { text-decoration: none; color: #475569; font-weight: 600; font-size: 15px; transition: color 0.2s; }
.nav-links a:hover { color: #0284c7; }

/* SAĞ ÜSTTEKİ GİRİŞ YAP BUTONU */
.login-nav-btn {
    background-color: #0284c7;
    color: #ffffff !important;
    padding: 10px 22px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 10px rgba(2, 132, 199, 0.25);
    transition: all 0.2s ease !important;
}
.login-nav-btn:hover { background-color: #0369a1; transform: translateY(-1px); }

/* HERO SECTİON (ANA KARŞILAMA ALANI) */
.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 180px 8% 120px 8%;
    /* GÖRSEL YOLU ASSETS KLASÖRÜNE YÖNLENDİRİLDİ */
    background: linear-gradient(rgba(15, 23, 42, 0.7), rgba(15, 23, 42, 0.85)), url('vangorseli.jpg') center center / cover no-repeat;
    color: #ffffff;
    position: relative;
}
.hero-text { max-width: 550px; }
.hero-text span { color: #38bdf8; font-weight: 700; font-size: 14px; text-transform: uppercase; letter-spacing: 1.5px; display: block; margin-bottom: 12px; }
.hero-text h1 { font-size: 44px; font-weight: 800; line-height: 1.2; color: #ffffff; margin-bottom: 20px; }
.hero-text p { font-size: 16px; color: #cbd5e1; line-height: 1.6; margin-bottom: 30px; }

.hero-buttons { display: flex; gap: 15px; flex-wrap: wrap; }
.btn-primary { background-color: #0284c7; color: white; padding: 14px 28px; border-radius: 8px; font-weight: 600; text-decoration: none; display: inline-flex; align-items: center; gap: 10px; transition: background 0.2s; }
.btn-primary:hover { background-color: #0369a1; }
.btn-secondary { border: 2px solid #94a3b8; color: white; padding: 14px 28px; border-radius: 8px; font-weight: 600; text-decoration: none; display: inline-flex; align-items: center; gap: 10px; transition: all 0.2s; }
.btn-secondary:hover { background-color: rgba(255,255,255,0.05); border-color: #ffffff; }

/* SAĞ TARAF GÖRSEL GRAFİK ALANI */
.hero-visual {
    background: rgba(255, 255, 255, 0.01); 
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 25px; 
    border-radius: 16px;
    backdrop-filter: blur(8px);
    width: 320px; 
    text-align: center;
}
.hero-visual i { font-size: 50px; color: #38bdf8; margin-bottom: 15px; animation: pulse 2s infinite; } 
.hero-visual h3 { font-size: 16px; margin-bottom: 8px; font-weight: 700; color: #ffffff; } 
.hero-visual p { color: #94a3b8; font-size: 13px; line-height: 1.5; } 

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.9; }
    50% { transform: scale(1.05); opacity: 1; }
    100% { transform: scale(1); opacity: 0.9; }
}

/* ÖZELLİKLER BÖLÜMÜ */
.features-section { padding: 100px 5% 80px 5%; text-align: center; background-color: #ffffff; }
.features-section h2 { font-size: 32px; color: #0f172a; font-weight: 800; margin-bottom: 12px; }
.features-section .sub { color: #64748b; font-size: 16px; margin-bottom: 60px; }

.features-grid { 
    display: grid; 
    grid-template-columns: repeat(5, 1fr); 
    gap: 20px; 
    max-width: 1400px; 
    margin: 0 auto; 
}
.feature-card { 
    background: #ffffff; 
    border: 1px solid #e2e8f0; 
    padding: 25px 20px; 
    border-radius: 12px; 
    text-align: left; 
    transition: transform 0.2s, box-shadow 0.2s; 
}
.feature-card:hover { transform: translateY(-5px); box-shadow: 0 20px 25px -5px rgba(0,0,0,0.05); border-color: #cbd5e1; }
.feature-icon { width: 45px; height: 45px; background: #e0f2fe; color: #0284c7; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 20px; margin-bottom: 18px; }
.feature-card h4 { font-size: 16px; color: #0f172a; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 13px; color: #475569; line-height: 1.6; }

@media (max-width: 1100px) { .features-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px) { .features-grid { grid-template-columns: 1fr; } }

/* --- MOBİL MENÜ VE ÖLÇEKLENDİRME UYUMLULUĞU --- */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 26px;
    color: #0f172a;
    cursor: pointer;
}

.mobile-login {
    display: none !important;
}

@media (max-width: 992px) {
    .mobile-toggle {
        display: block;
    }
    
    .nav-links {
        opacity: 0;
        visibility: hidden;
        transform: translateY(-15px);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        padding: 1.5rem;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    
    .nav-links.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .desktop-login {
        display: none !important;
    }
    
    .mobile-login {
        display: block !important;
        width: 100%;
    }
    
    .mobile-login .login-nav-btn {
        justify-content: center;
        margin-top: 10px;
    }
    
    /* Ana Sayfa ile Birebir Simetrik Boşluklar */
    .hero-container {
        flex-direction: column;
        text-align: center;
        padding: 140px 5% 80px 5%;
    }
    
    .hero-text {
        margin-bottom: 3rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .hero-container {
        padding: 120px 5% 50px 5%;
    }
    
    .hero-text h1 {
        font-size: 32px;
    }
}

/* HAKKIMIZDA BÖLÜMÜ (ORTALANMIŞ YENİ TASARIM) */
.about-section { padding: 100px 8%; background-color: #f8fafc; text-align: center; }
.about-content { max-width: 800px; margin: 0 auto; }
.about-content h2 { font-size: 32px; color: #0f172a; font-weight: 800; margin-bottom: 20px; }
.about-content p { font-size: 16px; color: #475569; line-height: 1.7; margin-bottom: 20px; }

/* İLETİŞİM BÖLÜMÜ */
.contact-section { padding: 100px 8%; background-color: #ffffff; }
.contact-section h2 { font-size: 32px; color: #0f172a; font-weight: 800; text-align: center; margin-bottom: 12px; }
.contact-section .sub { color: #64748b; font-size: 16px; text-align: center; margin-bottom: 60px; }
.contact-grid { display: flex; gap: 50px; flex-wrap: wrap; }

.contact-info-panel { flex: 1; min-width: 300px; display: flex; flex-direction: column; gap: 30px; justify-content: center; }
.contact-info-item { display: flex; align-items: center; gap: 20px; }
.contact-info-icon { width: 56px; height: 56px; background-color: #f0f9ff; color: #0284c7; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 20px; box-shadow: 0 4px 6px -1px rgba(2,132,199,0.05); }
.contact-info-text h4 { font-size: 15px; color: #64748b; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.contact-info-text p { font-size: 18px; color: #0f172a; font-weight: 700; margin-top: 4px; }

.contact-form-panel { flex: 12; min-width: 320px; background: #f8fafc; border: 1px solid #e2e8f0; padding: 40px; border-radius: 16px; box-shadow: 0 10px 15px -3px rgba(0,0,0,0.02); }
.contact-form-panel h3 { font-size: 20px; color: #0f172a; font-weight: 700; margin-bottom: 24px; display: flex; align-items: center; gap: 10px; }
.contact-form-panel h3 i { color: #0284c7; }
.form-row { display: flex; gap: 20px; margin-bottom: 20px; flex-wrap: wrap; }
.form-group { flex: 1; min-width: 200px; display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 13px; color: #475569; font-weight: 600; }
.form-group input, .form-group textarea { width: 100%; padding: 12px 16px; border: 1px solid #cbd5e1; border-radius: 8px; font-size: 14px; color: #0f172a; background-color: #ffffff; transition: all 0.2s; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: #0284c7; box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15); }
.form-submit-btn { background-color: #0f172a; color: white; border: none; padding: 14px; border-radius: 8px; font-size: 15px; font-weight: 600; cursor: pointer; transition: background 0.2s; display: flex; align-items: center; justify-content: center; gap: 8px; width: 100%; margin-top: 10px; }
.form-submit-btn:hover { background-color: #1e293b; }