/* Genel Stiller */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #10b981;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --gray-color: #64748b;
    --light-gray: #e2e8f0;
}

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

body {
    font-family: 'Poppins', sans-serif;
    color: var(--dark-color);
    line-height: 1.6;
    background-color: #f9fafb;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    height: auto;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.3s ease;
    text-align: center;
}

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

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

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

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

.demo-btn {
    background-color: var(--secondary-color);
    color: white;
    border-radius: 6px;
    padding: 8px 16px;
    font-weight: 500;
}

.demo-btn:hover {
    background-color: #0d9f6e;
}

/* Header Stilleri */
.header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

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

.logo img {
    height: 40px;
}

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

.navbar a {
    font-weight: 500;
    color: var(--gray-color);
    transition: color 0.3s;
}

.navbar a:hover, .navbar a.active {
    color: var(--primary-color);
}

.mobile-menu-btn {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

/* Hero Bölümü */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto;
}

/* Referanslar Bölümü */
.references-section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.section-header p {
    color: var(--gray-color);
    max-width: 600px;
    margin: 0 auto;
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    background-color: white;
    border: 1px solid var(--light-gray);
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
}

.filter-btn:hover, .filter-btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.references-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.reference-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.reference-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.card-header {
    padding: 20px;
    border-bottom: 1px solid var(--light-gray);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header img {
    max-height: 50px;
    width: auto;
}

.rating {
    color: #fbbf24;
}

.card-body {
    padding: 20px;
}

.card-body h3 {
    margin-bottom: 5px;
    font-size: 1.3rem;
}

.industry {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.testimonial {
    color: var(--gray-color);
    font-style: italic;
    margin-bottom: 15px;
}

.card-footer {
    padding: 15px 20px;
    border-top: 1px solid var(--light-gray);
    text-align: center;
}

.case-study-btn {
    color: var(--primary-color);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.case-study-btn:hover {
    text-decoration: underline;
}

/* İstatistikler Bölümü */
.stats-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.stat-card {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.stat-card h3 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-card p {
    color: var(--gray-color);
    font-weight: 500;
}

/* CTA Bölümü */
.cta-section {
    background-color: var(--dark-color);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.cta-section h2 {
    font-size: 2rem;
    margin-bottom: 15px;
}

.cta-section p {
    opacity: 0.8;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer Stilleri */
.footer {
    background-color: #0f172a;
    color: white;
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.footer-col h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 2px;
    background-color: var(--primary-color);
}

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

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li i {
    margin-right: 10px;
    color: var(--primary-color);
}

.footer-logo {
    height: 40px;
    margin-bottom: 20px;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    transition: all 0.3s;
}

.social-links a:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.legal-links {
    display: flex;
    gap: 20px;
}

.legal-links a {
    opacity: 0.7;
    transition: opacity 0.3s;
}

.legal-links a:hover {
    opacity: 1;
}

/* Responsive Tasarım */
@media (max-width: 992px) {
    .navbar {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 60px 0;
    }
    
    .references-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-section {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .legal-links {
        justify-content: center;
    }
}