/* Genel Stil Ayarları */
:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --gray-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --border-radius: 8px;
    --box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

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

ul {
    list-style: none;
}

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

section {
    padding: 80px 0;
}

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

.section-title {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-color);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

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

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

.btn.secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

/* Header ve Navigasyon */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    backdrop-filter: blur(10px);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 50px;
    max-width: 1400px;
    margin: 0 auto;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    align-items: center;
}

.nav-menu li {
    margin-left: 30px;
}

.nav-menu li a {
    font-weight: 500;
    transition: var(--transition);
}

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

.login-button a, .signup-button a {
    padding: 8px 20px;
    border-radius: var(--border-radius);
    font-weight: 600;
}

.login-button a {
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.signup-button a {
    background-color: var(--primary-color);
    color: white;
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 100vh;
    padding: 100px 50px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--dark-color);
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.1rem;
    color: var(--gray-color);
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    max-width: 90%;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
    100% {
        transform: translateY(0px);
    }
}

/* Features Section */
.features {
    background-color: white;
    padding: 100px 50px;
}

.features-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.feature-card p {
    color: var(--gray-color);
}

/* Courses Section */
.courses {
    background-color: #f8fafc;
    padding: 100px 50px;
}

.courses-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.course-card {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.course-card:hover {
    transform: translateY(-10px);
}

.course-image {
    height: 200px;
    overflow: hidden;
}

.course-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.course-content {
    padding: 25px;
}

.course-level {
    display: inline-block;
    padding: 5px 10px;
    background-color: var(--accent-color);
    color: white;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-bottom: 15px;
}

.course-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.course-content p {
    color: var(--gray-color);
    margin-bottom: 15px;
}

.course-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    color: var(--gray-color);
    font-size: 0.9rem;
}

.view-all {
    text-align: center;
    margin-top: 50px;
}

/* Competitions Section */
.competitions {
    background-color: white;
    padding: 100px 50px;
}

.competitions-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.competition-card {
    display: flex;
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.competition-card:hover {
    transform: translateY(-10px);
}

.competition-date {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: var(--primary-color);
    color: white;
    padding: 20px;
    min-width: 100px;
}

.competition-date .day {
    font-size: 2rem;
    font-weight: 700;
}

.competition-date .month {
    font-size: 1rem;
}

.competition-content {
    padding: 25px;
    flex: 1;
}

.competition-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.competition-content p {
    color: var(--gray-color);
    margin-bottom: 15px;
}

.competition-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    color: var(--gray-color);
    font-size: 0.9rem;
}

/* Stats Section */
.stats {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 80px 50px;
    color: white;
}

.stats-container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    padding: 20px;
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.stat-text {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Testimonials Section */
.testimonials {
    background-color: #f8fafc;
    padding: 100px 50px;
}

.testimonials-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.testimonial-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--box-shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.testimonial-image {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    margin-bottom: 20px;
    border: 5px solid var(--accent-color);
}

.testimonial-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.testimonial-content p {
    font-style: italic;
    color: var(--gray-color);
    margin-bottom: 20px;
}

.testimonial-content h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: var(--dark-color);
}

.testimonial-content span {
    color: var(--gray-color);
    font-size: 0.9rem;
}

/* CTA Section */
.cta {
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('images/cta-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    padding: 100px 50px;
    text-align: center;
    color: white;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

/* Footer */
footer {
    background-color: var(--dark-color);
    color: white;
    padding-top: 70px;
}

.footer-top {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 50px 50px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-column h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    position: relative;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 50px;
    height: 3px;
    background-color: var(--primary-color);
}

.footer-column p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icons a {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: var(--transition);
}

.social-icons a:hover {
    background-color: var(--primary-color);
}

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

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-column ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.contact-info li {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    color: rgba(255, 255, 255, 0.7);
}

.contact-info li i {
    margin-right: 10px;
    color: var(--primary-color);
}

.newsletter-form {
    display: flex;
    margin-top: 20px;
}

.newsletter-form input {
    flex: 1;
    padding: 12px 15px;
    border: none;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    outline: none;
}

.newsletter-form button {
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    padding: 0 15px;
}

/* Sponsors Section */
.footer-middle {
    padding: 50px;
    max-width: 1200px;
    margin: 0 auto;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sponsors-section h3 {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 30px;
}

.sponsors-container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 30px;
}

.sponsor {
    text-align: center;
    transition: var(--transition);
}

.sponsor:hover {
    transform: translateY(-10px);
}

.sponsor img {
    width: 120px;
    height: 120px;
    object-fit: contain;
    filter: grayscale(100%) brightness(200%);
    transition: var(--transition);
}

.sponsor:hover img {
    filter: grayscale(0%) brightness(100%);
}

.sponsor p {
    margin-top: 10px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 50px;
    max-width: 1200px;
    margin: 0 auto;
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

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

/* Responsive Design */
@media screen and (max-width: 992px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 150px 20px 80px;
    }
    
    .hero-content {
        margin-bottom: 50px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        flex-direction: column;
        background-color: white;
        width: 100%;
        height: calc(100vh - 80px);
        padding: 20px;
        transition: var(--transition);
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 15px 0;
    }
    
    .login-button, .signup-button {
        margin-top: 20px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

@media screen and (max-width: 768px) {
    section {
        padding: 60px 20px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .stats-container {
        flex-direction: column;
        gap: 30px;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .newsletter-form input {
        border-radius: var(--border-radius);
        margin-bottom: 10px;
    }
    
    .newsletter-form button {
        border-radius: var(--border-radius);
        width: 100%;
    }
    
    .sponsors-container {
        gap: 40px;
    }
}

/* Güvenlik Önlemleri için Ek Stiller */
input, textarea, button {
    outline: none;
}

input:focus, textarea:focus {
    border-color: var(--primary-color);
}

/* Animasyonlar */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card, .course-card, .competition-card, .testimonial-card {
    animation: fadeIn 0.5s ease-out forwards;
}