/* GENEL AYARLAR */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
    scroll-behavior: smooth;
}

:root {
    --primary-color: #0F172A; /* Koyu Lacivert */
    --accent-color: #0EA5E9; /* Teknoloji Mavisi */
    --whatsapp-green: #25D366; /* WhatsApp Yeşili */
    --text-dark: #334155;
    --text-light: #94A3B8;
    --white: #ffffff;
    --bg-light: #F8FAFC;
}

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

/* NAVBAR */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    background-color: var(--primary-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.logo {
    color: var(--white);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 1px;
}

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

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

.nav-links a {
    text-decoration: none;
    color: #cbd5e1;
    font-size: 0.95rem;
    transition: 0.3s;
}

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

.btn-nav-contact {
    border: 1px solid var(--accent-color);
    padding: 8px 20px;
    border-radius: 4px;
    color: var(--accent-color) !important;
}

.btn-nav-contact:hover {
    background-color: var(--accent-color);
    color: var(--white) !important;
}

/* HERO SECTION */
.hero {
    height: 90vh;
    background: url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?q=80&w=1920&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    padding: 0 20px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.85); /* Resmi karartma */
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.badge {
    background-color: rgba(255,255,255,0.1);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    border: 1px solid rgba(255,255,255,0.2);
}

.hero h1 {
    font-size: 3.5rem;
    margin: 20px 0;
    line-height: 1.2;
}

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

.hero p {
    font-size: 1.2rem;
    color: #cbd5e1;
    margin-bottom: 30px;
}

.hero-btns .btn {
    display: inline-block;
    padding: 14px 35px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    margin: 10px;
    transition: 0.3s;
}

.btn-primary {
    background-color: var(--accent-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: #0284c7;
}

.btn-outline {
    border: 2px solid var(--white);
    color: var(--white);
}

.btn-outline:hover {
    background-color: var(--white);
    color: var(--primary-color);
}

/* SECTIONS COMMON */
.section-padding { padding: 80px 5%; }
.section-title {
    text-align: center;
    font-size: 2.2rem;
    color: var(--primary-color);
    margin-bottom: 60px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
    margin: 15px auto 0;
}

/* ABOUT SECTION */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.about-text p { margin-bottom: 15px; color: #64748b; }

.stat-box {
    background: var(--white);
    padding: 30px;
    margin-bottom: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border-left: 5px solid var(--accent-color);
}

.stat-box i { font-size: 2rem; color: var(--primary-color); margin-bottom: 10px; }
.stat-box span { display: block; font-weight: 700; font-size: 1.1rem; }

/* SERVICES SECTION */
.services-section { background-color: var(--bg-light); }
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    transition: 0.3s;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.service-card:hover { transform: translateY(-5px); box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1); }

.service-card .icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 20px;
}

.highlight-card {
    background: var(--primary-color);
    color: var(--white);
    border: 1px solid var(--primary-color);
}

.highlight-card h3, .highlight-card p { color: var(--white); }
.highlight-card .icon { color: var(--accent-color); }

/* PROJECTS SECTION */
.projects-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.project-item {
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
}

.project-item h4 { color: var(--primary-color); margin-bottom: 10px; font-size: 1.3rem; }
.tags span {
    display: inline-block;
    background: #e0f2fe;
    color: #0369a1;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    margin-right: 5px;
    font-weight: 600;
}

/* CONTACT SECTION */
.contact-subtitle {
    text-align: center;
    margin-top: -40px;
    margin-bottom: 50px;
    color: #64748b;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.contact-card {
    background: var(--white);
    padding: 40px 20px;
    text-align: center;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    transition: 0.3s;
}

.contact-card:hover { border-color: var(--accent-color); }

.contact-card .icon { font-size: 2rem; color: var(--primary-color); margin-bottom: 15px; }
.contact-link { color: var(--accent-color); font-weight: 600; text-decoration: none; }

/* WhatsApp Özel Stil */
.whatsapp-card {
    border-top: 4px solid var(--whatsapp-green);
    background-color: #f0fdf4;
}

.whatsapp-card .icon { color: var(--whatsapp-green); }

.btn-whatsapp {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background-color: var(--whatsapp-green);
    color: white;
    padding: 10px 25px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    margin-top: 15px;
    transition: 0.3s;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
    background-color: #16a34a;
    transform: scale(1.05);
}

/* FOOTER */
.main-footer {
    background-color: var(--primary-color);
    color: #94a3b8;
    text-align: center;
    padding: 30px 0;
    font-size: 0.9rem;
    margin-top: 50px;
}

.main-footer strong { color: var(--white); }

/* MOBILE RESPONSIVE */
@media (max-width: 768px) {
    .navbar { flex-direction: column; gap: 15px; }
    .hero h1 { font-size: 2.5rem; }
    .about-grid, .projects-grid { grid-template-columns: 1fr; }
}