:root {
    --bg-primary: #050816;
    --bg-secondary: #0a0f29;
    --primary: #00d2ff;
    --accent: #9d50bb;
    --text-primary: #ffffff;
    --text-secondary: #aaaaaa;
    --glass: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.bg-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(rgba(5, 8, 22, 0.85), rgba(5, 8, 22, 0.95)),
        url('../img/hero-bg.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    z-index: -2;
}

.main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 8%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(15px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--glass-border);
}

.logo img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    height: auto;
    width: 120px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 25px;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    padding: 5px 0;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

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

.nav-links a:hover::after {
    width: 100%;
}

.lang-btn {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 4px 12px;
    cursor: pointer;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    transition: var(--transition);
    min-width: 40px;
}

.lang-btn:hover {
    background: var(--primary);
    color: var(--bg-primary);
    transform: translateY(-2px);
}

.hero-section {
    padding: 140px 8% 80px;
    text-align: center;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero-section h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(45deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.2;
}

.hero-section p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.btn-primary {
    display: inline-block;
    background: linear-gradient(45deg, var(--primary), var(--accent));
    color: white;
    padding: 15px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(0, 210, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 210, 255, 0.4);
}

.services-section {
    padding: 100px 8%;
}

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

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* İşte tam olarak bu satırı değiştirdik */
    gap: 30px;
    margin-top: 40px;
}

@media (max-width: 992px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.service-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: 0 15px 35px rgba(0, 210, 255, 0.15);
}

.service-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid var(--glass-border);
    transition: transform 0.6s ease;
}

.service-card:hover img {
    transform: scale(1.05);
}

.card-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.card-content h3 {
    color: var(--primary);
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.card-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    flex-grow: 1;
}

.references-section {
    padding: 100px 8%;
    position: relative;
    overflow: hidden;
}

.ref-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(rgba(5, 8, 22, 0.9), rgba(5, 8, 22, 0.9)),
        url('../img/cta-bg.webp');
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
    z-index: -1;
}

.ref-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.ref-card {
    display: block;
    max-width: 550px;
    margin: 40px auto;
    background: var(--bg-secondary);
    border-radius: 20px;
    overflow: hidden;
    text-decoration: none;
    color: var(--text-primary);
    border: 1px solid var(--primary);
    transition: var(--transition);
    box-shadow: var(--shadow);
    position: relative;
}

.ref-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 210, 255, 0.25);
}

.ref-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
}

.ref-card:hover img {
    transform: scale(1.1);
}

.ref-label {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.8);
    padding: 20px;
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
}

.ref-card:hover .ref-label {
    background: linear-gradient(to top, rgba(0, 210, 255, 0.8), transparent);
}

.contact-section {
    padding: 100px 8%;
    text-align: center;
}

.contact-info {
    margin: 30px 0 40px;
}

.phone-number {
    display: block;
    font-size: 2rem;
    color: var(--primary);
    text-decoration: none;
    font-weight: 700;
    margin: 20px 0;
    transition: var(--transition);
}

.phone-number:hover {
    color: var(--accent);
    transform: scale(1.05);
}

.whatsapp-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: #25d366;
    color: white;
    padding: 15px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    margin: 20px 0;
    border: none;
    cursor: pointer;
}

.whatsapp-btn:hover {
    background: #128C7E;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(37, 211, 102, 0.3);
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 25px;
    margin: 40px 0;
}

.social-icons a {
    display: inline-block;
    transition: var(--transition);
}

.social-icons img {
    width: 35px;
    height: 35px;
    opacity: 0.7;
    transition: var(--transition);
}

.social-icons a:hover img {
    opacity: 1;
    transform: scale(1.2);
    filter: drop-shadow(0 0 8px var(--primary));
}

.form-container {
    max-width: 600px;
    margin: 40px auto;
    background: var(--glass);
    padding: 40px;
    border-radius: 25px;
    border: 1px solid var(--glass-border);
    text-align: left;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 20px;
    background: rgba(8, 10, 22, 0.8);
    border: 1px solid #333;
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 16px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(0, 210, 255, 0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #666;
}

.captcha-box {
    background: rgba(0, 210, 255, 0.1);
    padding: 20px;
    border-radius: 12px;
    margin: 25px 0;
    border: 1px dashed var(--primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.captcha-question {
    font-weight: 600;
    color: var(--primary);
    font-size: 16px;
}

.captcha-input {
    width: 100px !important;
    padding: 10px 15px !important;
    background: var(--bg-primary) !important;
    text-align: center;
}

.btn-submit {
    width: 100%;
    background: linear-gradient(45deg, var(--primary), var(--accent));
    color: white;
    padding: 18px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 210, 255, 0.3);
}

.btn-submit:active {
    transform: translateY(-1px);
}

.main-footer {
    padding: 40px 8%;
    text-align: center;
    color: #666;
    font-size: 14px;
    border-top: 1px solid var(--glass-border);
    background: var(--bg-secondary);
}

@media (max-width: 1024px) {
    .hero-section h1 {
        font-size: 2.8rem;
    }
    
    .services-section,
    .references-section,
    .contact-section {
        padding: 80px 5%;
    }
}

@media (max-width: 768px) {
    .main-nav {
        padding: 15px 5%;
    }
    
    .nav-links {
        gap: 15px;
    }
    
    .nav-links a {
        font-size: 13px;
    }
    
    .hero-section {
        padding: 120px 5% 60px;
    }
    
    .hero-section h1 {
        font-size: 2.2rem;
    }
    
    .hero-section p {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .phone-number {
        font-size: 1.5rem;
    }
    
    .form-container {
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    .hero-section h1 {
        font-size: 1.8rem;
    }
    
    .btn-primary,
    .whatsapp-btn {
        padding: 12px 25px;
        font-size: 14px;
    }
    
    .lang-btn {
        padding: 3px 8px;
        font-size: 11px;
        min-width: 35px;
    }
    
    .captcha-box {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .captcha-input {
        width: 100% !important;
        max-width: 200px;
    }
}
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

button:focus,
input:focus,
textarea:focus,
a:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: var(--bg-primary);
    padding: 8px;
    z-index: 1001;
    text-decoration: none;
    font-weight: 600;
}

.skip-link:focus {
    top: 0;
}