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

/* --- TEMEL AYARLAR VE RENKLER --- */
:root {
    --navy: #0a192f;
    --blue: #007bff;
    --light-blue: #e6f1ff;
    --white: #ffffff;
    --slate: #8892b0;
    --text-color: #334155;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

html { scroll-behavior: smooth; }

body {
    background-color: var(--white);
    color: var(--text-color);
    overflow-x: hidden;
    line-height: 1.6;
}

a { text-decoration: none; }
ul { list-style: none; }

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

.section { padding: 100px 0; }

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: var(--navy);
    margin-bottom: 50px;
}

/* --- NAVİGASYON (MENÜ) --- */
.navbar {
    background: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.logo { font-size: 1.8rem; font-weight: 700; color: var(--white); }
.logo span { color: var(--blue); }

.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a { color: var(--white); font-weight: 500; transition: color 0.3s ease; }
.nav-links a:hover { color: var(--blue); }

/* --- BUTONLAR --- */
.btn-primary, .btn-secondary {
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    border: none;
}

.btn-primary { background-color: var(--blue); color: var(--white) !important; }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 10px 20px rgba(0, 123, 255, 0.3); }

.btn-secondary { background-color: transparent; border: 2px solid var(--blue); color: var(--blue); }
.btn-secondary:hover { background-color: var(--blue); color: var(--white); }

/* --- KAHRAMAN (HERO) ALANI --- */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding-top: 80px; 
}

.hero-content { max-width: 800px; padding: 0 20px; }

.badge {
    background: rgba(0, 123, 255, 0.1);
    color: var(--blue);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 25px;
}

.hero h1 { font-size: 4rem; color: var(--navy); line-height: 1.2; margin-bottom: 20px; font-weight: 700; }
.hero p { font-size: 1.2rem; color: var(--slate); margin-bottom: 40px; }
.hero-btns { display: flex; gap: 20px; justify-content: center; }

/* --- HİZMETLER BÖLÜMÜ --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    padding: 40px;
    background: var(--light-blue);
    border-radius: 20px;
    transition: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid transparent;
    text-align: center;
}

.service-card:hover {
    transform: translateY(-15px);
    background: var(--white);
    border-color: var(--blue);
    box-shadow: 0 20px 40px rgba(0, 123, 255, 0.1);
}

.service-card i { font-size: 2.5rem; color: var(--blue); margin-bottom: 20px; }
.service-card h3 { color: var(--navy); margin-bottom: 15px; }

/* --- REFERANSLAR (ÖZET) --- */
.bg-light { background-color: #f8fafc; }

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.portfolio-item {
    height: 250px;
    background: linear-gradient(45deg, var(--navy), #1e3a8a);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: transform 0.3s ease;
}

.portfolio-item:hover { transform: scale(1.03); }
.item-overlay h4 { font-size: 1.2rem; }

/* --- İLETİŞİM FORMU --- */
.form-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    background: var(--navy);
    color: var(--white);
    padding: 60px;
    border-radius: 30px;
}

.contact-details { margin-top: 30px; display: flex; flex-direction: column; gap: 15px; }
.contact-details span { display: flex; align-items: center; gap: 10px; color: var(--slate); }

.modern-form input, .modern-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 10px;
    border: none;
    background: rgba(255,255,255,0.05);
    color: var(--white);
    font-size: 1rem;
    transition: 0.3s ease;
}

.modern-form input::placeholder, .modern-form textarea::placeholder { color: rgba(255,255,255,0.4); }
.modern-form input:focus, .modern-form textarea:focus { outline: none; background: rgba(255,255,255,0.1); box-shadow: 0 0 0 2px var(--blue); }

/* --- MOBİL UYUM (RESPONSIVE) --- */
@media (max-width: 768px) {
    .form-wrapper { grid-template-columns: 1fr; padding: 30px; }
    .hero h1 { font-size: 2.5rem; }
    .hero-btns { flex-direction: column; }
    .nav-links { display: none; }
    .navbar { padding: 15px 5%; }
}