/* --- TEMEL AYARLAR (GÖKYÜZÜ TEMA) --- */
        :root {
            --primary: #4a90e2;      /* Modern Mavi */
            --primary-dark: #357bd8; /* Koyu Mavi (Hover için) */
            --primary-light: #e9f2fa;/* Çok Açık Mavi (Arkaplanlar için) */
            --secondary: #f5a623;    /* Altın Sarısı Vurgu */
            --text-dark: #ecf0f1;    /* Açık Gri Metin */
            --text-muted: #bdc3c7;   /* Gri Metin */
            --white: #FFFFFF;
            --whatsapp: #25D366;
            --background-dark: #1c2b3a; /* Derin Lacivert Arkaplan */
        }

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

        body {
            font-family: 'DM Sans', sans-serif;
            background-color: var(--background-dark);
            color: var(--text-dark);
            line-height: 1.7;
            overflow-x: hidden;
        }

        html {
            scroll-behavior: smooth;
        }

        .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: 90px 0;
            position: relative;
            overflow: hidden;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: 'Outfit', sans-serif;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 20px;
            line-height: 1.3;
        }

        h2.section-title {
            font-size: 3rem;
            text-align: center;
            margin-bottom: 60px;
        }

        h2.section-title span {
            color: var(--primary);
            position: relative;
            display: inline-block;
        }

        /* Vurgu çizgisi */
        h2.section-title span::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 50px;
            height: 3px;
            background-color: var(--primary);
            border-radius: 3px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            font-size: 1.05rem;
            border: 2px solid transparent;
            font-family: 'Outfit', sans-serif;
        }

        .btn-turkuaz {
            background-color: var(--primary);
            color: var(--white);
            box-shadow: 0 4px 20px rgba(74, 144, 226, 0.35);
        }
        .btn-turkuaz:hover {
            background-color: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(74, 144, 226, 0.45);
        }

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

        /* --- HEADER --- */
        header {
            background-color: rgba(44, 62, 80, 0.8);
            backdrop-filter: blur(10px);
            padding: 20px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0,0,0,0.03);
        }

        header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-dark);
            text-decoration: none;
            font-family: 'Outfit', sans-serif;
        }
        .logo span { color: var(--primary); }

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

        nav ul li a {
            color: var(--text-muted);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
            font-size: 0.95rem;
        }

        nav ul li a:hover,
        nav ul li a.active {
            color: var(--primary);
            font-weight: 700;
        }

        .header-phone {
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* --- HERO SECTION --- */
        .hero {
            padding: 120px 0 150px;
            background: transparent;
            display: flex;
            align-items: center;
        }

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

        .hero h1 {
            font-size: 4rem;
            margin-bottom: 25px;
            color: var(--text-dark);
        }
        .hero h1 .highlight {
            color: var(--primary);
            display: inline-block;
            position: relative;
        }
        /* Hafif alt çizgi efekti */
        .hero h1 .highlight::before {
            content: '';
            position: absolute;
            bottom: 5px;
            left: 0;
            width: 100%;
            height: 15px;
            background-color: rgba(52, 152, 219, 0.2);
            z-index: -1;
            transform: rotate(-2deg);
        }

        .hero p {
            font-size: 1.3rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 600px;
        }

        /* --- FEATURES (NEDEN BİZ) --- */
        .features {
            background-color: transparent;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
        }
        .feature-card {
            background: rgba(255, 255, 255, 0.05);
            padding: 40px;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.4s ease;
            text-align: left;
            position: relative;
            overflow: hidden;
        }
        .feature-card:hover {
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
            border-color: var(--primary);
            transform: translateY(-12px);
        }
        .feature-card::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 300%;
            height: 300%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 70%);
            transform: translate(-50%, -50%) scale(0);
            transition: transform 0.6s ease;
            z-index: 0;
            opacity: 0;
        }
        .feature-card:hover::after {
            transform: translate(-50%, -50%) scale(1);
            opacity: 1;
        }
        .feature-icon {
            width: 70px;
            height: 70px;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            border-radius: 15px;
            margin-bottom: 25px;
        }
        .feature-card h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
        }

        /* --- SERVICES --- */
        .services {
            background-color: var(--background-dark);
        }
        .services-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .service-card {
            background: rgba(255, 255, 255, 0.05);
            padding: 40px;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
            display: flex;
            align-items: flex-start;
            gap: 25px;
        }
        .service-card i {
            font-size: 2.5rem;
            color: var(--primary);
            flex-shrink: 0;
        }
        .service-content h3 {
            font-size: 1.5rem;
            margin-bottom: 10px;
        }

        /* --- HOW IT WORKS --- */
        .process {
            background-color: transparent;
        }
        .process-steps {
            display: flex;
            justify-content: space-between;
            gap: 40px;
            counter-reset: step;
        }
        .process-step {
            text-align: center;
            position: relative;
            flex: 1;
        }
        .process-step::before {
            counter-increment: step;
            content: counter(step);
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: var(--white);
            font-weight: 700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            font-family: 'Outfit', sans-serif;
            font-size: 1.2rem;
        }

        /* --- FAQ --- */
        .faq {
            background-color: var(--background-dark);
        }
        .accordion {
            max-width: 800px;
            margin: 0 auto;
        }
        .accordion-item {
            background: rgba(255, 255, 255, 0.05);
            border-radius: 15px;
            margin-bottom: 15px;
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(0,0,0,0.03);
        }
        .accordion-header {
            padding: 25px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1.1rem;
            color: var(--text-dark);
            transition: all 0.3s ease;
        }
        .accordion-header:hover {
            color: var(--primary);
        }
        .accordion-header i {
            color: var(--primary);
            transition: transform 0.3s ease;
        }
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: all 0.4s ease;
            padding: 0 25px;
        }
        .accordion-content p {
            padding-bottom: 25px;
            color: var(--text-muted);
        }
        .accordion-item.active .accordion-content {
            max-height: 300px; /* İçeriğe göre artırılabilir */
        }
        .accordion-item.active .accordion-header i {
            transform: rotate(180deg);
        }

        /* --- CTA --- */
        .cta {
            background-color: var(--primary);
            color: var(--white);
            text-align: center;
        }
        .cta h2 {
            color: var(--white);
            font-size: 3rem;
        }
        .cta p {
            color: rgba(255,255,255,0.9);
            font-size: 1.3rem;
            margin-bottom: 40px;
        }
        .cta .btn-white {
            background-color: var(--white);
            color: var(--primary);
        }
        .cta .btn-white:hover {
            background-color: var(--text-dark);
            color: var(--white);
        }

        /* --- FOOTER --- */
        footer {
            background-color: #1c2833;
            color: rgba(255,255,255,0.6);
            padding: 80px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 50px;
            margin-bottom: 50px;
        }
        .footer-about .logo {
            color: var(--white);
            margin-bottom: 20px;
            display: inline-block;
        }
        .footer-col h4 {
            color: var(--white);
            font-size: 1.2rem;
            margin-bottom: 25px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: rgba(255,255,255,0.6);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            text-align: center;
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 30px;
            font-size: 0.9rem;
        }

        /* --- MOBILE STICKY --- */
        .mobile-sticky {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            z-index: 999;
        }
        .mobile-sticky a {
            flex: 1;
            padding: 18px;
            text-align: center;
            text-decoration: none;
            font-weight: 700;
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-family: 'Outfit', sans-serif;
        }
        .sticky-wa { background-color: var(--whatsapp); }
        .sticky-call { background-color: var(--primary); }

        /* --- RESPONSIVE --- */
        @media (max-width: 992px) {
            .hero h1 { font-size: 3rem; }
            .features-grid { grid-template-columns: 1fr; }
            .services-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; text-align: center; }
        }
        @media (max-width: 768px) {
            header .container { flex-direction: column; gap: 15px; }
            nav ul { display: none; } /* Mobil menü eklenebilir */
            .header-phone { display: none; } /* Sticky kullanılıyor */
            .hero { padding: 80px 0; text-align: center; }
            .hero h1 { font-size: 2.5rem; }
            .hero-content { margin: 0 auto; }
            .hero-buttons { justify-content: center; }
            .process-steps { flex-direction: column; gap: 30px; }
            .process-step::before { margin-bottom: 15px; }
            .mobile-sticky { display: flex; }
            body { padding-bottom: 60px; }
        }

        /* --- STARS --- */
        .stars-container {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            overflow: hidden;
        }

        .star {
            position: absolute;
            background-color: white;
            border-radius: 50%;
            animation: twinkle 5s infinite;
        }

        @keyframes twinkle {
            0%, 100% { opacity: 0.5; }
            50% { opacity: 1; }
        }