/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Logo Renkleri - Mavi Gradient */
    --primary-color: #2563EB;
    --primary-light: #60A5FA;
    --primary-dark: #1E40AF;
    --primary-gradient: linear-gradient(135deg, #60A5FA 0%, #2563EB 100%);
    
    /* Logo Renkleri - Gri Tonları */
    --gray-dark: #374151;
    --gray-medium: #6B7280;
    --gray-light: #9CA3AF;
    
    /* Text Colors */
    --text-dark: #1F2937;
    --text-medium: #374151;
    --text-light: #6B7280;
    
    /* Background Colors */
    --bg-light: #F9FAFB;
    --bg-white: #FFFFFF;
    --bg-gray: #F3F4F6;
    
    /* Border & Shadow */
    --border-color: #E5E7EB;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.7;
    color: var(--text-medium);
    overflow-x: hidden;
    font-weight: 400;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-img {
    height: 40px;
    width: auto;
    flex-shrink: 0;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-main {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: 0.8px;
    line-height: 1.1;
}

.logo-ata {
    background: linear-gradient(135deg, #60A5FA, #2563EB);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-tekno {
    color: var(--gray-dark);
}

.logo-subtitle {
    font-size: 0.7rem;
    color: var(--gray-medium);
    font-weight: 400;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-menu a:hover {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* Hero Section */
.hero {
    position: relative;
    height: 85vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    color: white;
    text-align: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.2);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.125rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    font-weight: 400;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 0.875rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--bg-white);
    color: var(--primary-color);
    font-weight: 600;
    border: 2px solid transparent;
}

.btn-primary:hover {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--bg-white);
    border: 2px solid rgba(255, 255, 255, 0.8);
    font-weight: 600;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--bg-white);
    transform: translateY(-1px);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.scroll-indicator span {
    display: block;
    width: 30px;
    height: 50px;
    border: 2px solid white;
    border-radius: 25px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: white;
    border-radius: 50%;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Section Styles */
section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-dark);
    letter-spacing: -0.01em;
    position: relative;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary-gradient);
    border-radius: 2px;
}

.section-header p {
    font-size: 1.0625rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* About Section */
.about {
    background: var(--bg-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-content--single {
    grid-template-columns: 1fr;
    max-width: 820px;
    margin: 0 auto;
    text-align: center;
}

.about-content--single .about-text p {
    text-align: center;
}

.about-image img {
    width: 100%;
    height: 100%;
    max-height: 420px;
    object-fit: cover;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.about-image {
    display: block;
}

.about-text h3 {
    font-size: 1.875rem;
    margin-bottom: 1.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-medium);
    line-height: 1.8;
    font-size: 1rem;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.stat-item {
    text-align: center;
    padding: 2rem 1.5rem;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.stat-item h4 {
    font-size: 2.25rem;
    font-weight: 600;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: var(--text-medium);
    font-size: 0.875rem;
    font-weight: 500;
}


/* Services Section */
.services {
    background: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    transition: all 0.2s ease;
}

.service-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.service-icon {
    width: 56px;
    height: 56px;
    background: var(--primary-gradient);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: white;
}

.service-icon svg {
    width: 30px;
    height: 30px;
}

.service-card h3 {
    font-size: 1.375rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    font-weight: 600;
}

.service-card > p {
    color: var(--text-medium);
    margin-bottom: 1.5rem;
    line-height: 1.7;
    font-size: 0.9375rem;
}

.service-features {
    list-style: none;
}

.service-features li {
    padding: 0.5rem 0;
    color: var(--text-medium);
    position: relative;
    padding-left: 1.5rem;
    font-size: 0.9375rem;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 600;
}

/* Why Us Section */
.why-us {
    background: var(--bg-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-item {
    text-align: center;
    padding: 2rem 1.5rem;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: all 0.2s ease;
}

.feature-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.25rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.feature-item h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-weight: 600;
}

.feature-item p {
    color: var(--text-medium);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* Contact Section */
.contact {
    background: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
}

.contact-item h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.contact-item p {
    color: var(--text-light);
}

.contact-item a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: var(--primary-color);
}

.contact-form {
    background: var(--bg-white);
    padding: 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
    font-size: 0.9375rem;
    transition: all 0.2s ease;
    background: var(--bg-white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
}

/* Form Message */
.form-message {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1.5rem;
    font-size: 0.9375rem;
    line-height: 1.6;
}

.form-message-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.form-message-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.form-message-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #93c5fd;
}

/* Submit Button States */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

#submitLoader {
    display: none;
}

/* Footer */
.footer {
    background: var(--gray-dark);
    color: white;
    padding: 4rem 0 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: white;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

/* Page Header */
.page-header {
    background: var(--primary-gradient);
    color: white;
    padding: 8rem 0 4rem;
    text-align: center;
    margin-top: 70px;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.page-header p {
    font-size: 1.125rem;
    opacity: 0.9;
    font-weight: 400;
}

/* Services Preview */
.services-preview {
    background: var(--bg-white);
    padding: 5rem 0;
}

.service-link {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    margin-top: 1rem;
    transition: all 0.3s ease;
    position: relative;
}

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

.service-link:hover::after {
    width: 100%;
}

.service-cta {
    margin-top: 1.5rem;
}

/* Stats Section */
.stats-section {
    background: var(--bg-light);
    padding: 4rem 0;
}

.stats-section .stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

/* Mission & Vision */
.mission-vision {
    background: var(--bg-white);
    padding: 5rem 0;
}

.mv-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
}

.mv-item {
    text-align: center;
    padding: 3rem 2.5rem;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.mv-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.mv-item h3 {
    font-size: 1.375rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    font-weight: 600;
}

.mv-item p {
    color: var(--text-medium);
    line-height: 1.8;
    font-size: 0.9375rem;
}

/* Values Section */
.values {
    background: var(--bg-light);
    padding: 5rem 0;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.value-item {
    text-align: center;
    padding: 2rem 1.5rem;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: all 0.2s ease;
}

.value-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.value-item h4 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-weight: 600;
}

.value-item p {
    color: var(--text-medium);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* Services Info */
.services-info {
    background: var(--bg-white);
    padding: 5rem 0;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.process-item {
    text-align: center;
    position: relative;
}

.process-item:not(:last-child)::after {
    content: '→';
    position: absolute;
    right: -1.5rem;
    top: 2rem;
    font-size: 2rem;
    color: var(--primary-color);
}

.process-number {
    width: 56px;
    height: 56px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.375rem;
    font-weight: 600;
    margin: 0 auto 1rem;
}

.process-item h4 {
    font-size: 1.0625rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-weight: 600;
}

.process-item p {
    color: var(--text-medium);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* Contact Form Enhancements */
.contact-info h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.contact-info > p {
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.contact-form h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.form-group select {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.text-center {
    text-align: center;
}

/* Active Nav Link */
.nav-menu a.active {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu a.active::after {
    width: 100%;
}

/* Logo Link */
.logo {
    text-decoration: none;
}

/* Responsive Design */
@media (max-width: 768px) {
    .logo-img {
        height: 28px;
        width: auto;
    }

    .logo-main {
        font-size: 1.1rem;
    }

    .logo-subtitle {
        font-size: 0.6rem;
    }

    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: white;
        width: 100%;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transition: left 0.3s ease;
        gap: 1rem;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }

    .stats,
    .stats-section .stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .mv-grid {
        grid-template-columns: 1fr;
    }

    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-grid {
        grid-template-columns: 1fr;
    }

    .process-item:not(:last-child)::after {
        display: none;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .page-header p {
        font-size: 1rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .section-header h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .stats-section .stats,
    .values-grid {
        grid-template-columns: 1fr;
    }
}