:root {
    --primary-color: #FF4B6E;
    --secondary-color: #6C63FF;
    --accent-color: #FF5722;
    --text-color: #2D3436;
    --light-text: #636E72;
    --background: #FFFFFF;
    --light-background: #F8F9FA;
    --border-color: #dddddd;
    --success-color: #4CAF50;
    --error-color: #f44336;
    --warning-color: #ff9800;
    --info-color: #2196F3;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --border-radius: 12px;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--background);
    padding-top: 70px;
}

.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header .logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.header .logo:hover {
    color: var(--secondary-color);
}

.header-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.header-menu a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    font-size: 1rem;
    padding: 0.5rem 0;
    position: relative;
}

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

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

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

/* Aktif menü öğesi için stil */
.header-menu a.active {
    color: var(--primary-color);
}

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

.language-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: 2rem;
    padding-left: 2rem;
    border-left: 1px solid rgba(0, 0, 0, 0.1);
}

.language-selector button {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.language-selector button i {
    font-size: 1rem;
}

.language-selector button.active {
    opacity: 1;
    font-weight: 600;
    color: var(--primary-color);
}

.language-selector button:hover {
    opacity: 1;
    color: var(--primary-color);
}

/* Mobil responsive tasarım için */
@media (max-width: 768px) {
    .header {
        padding: 1rem;
    }

    .header-menu {
        gap: 1rem;
    }

    .language-selector {
        margin-left: 1rem;
        padding-left: 1rem;
    }
}

@media (max-width: 640px) {
    .header-menu a {
        font-size: 0.9rem;
    }
}

/* App Showcase Section */
.app-showcase {
    min-height: 100vh;
    padding: 2rem;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #FF4B6E 0%, #6C63FF 100%);
    position: relative;
    overflow: hidden;
}

.app-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.app-info {
    color: white;
}

.app-info h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.tagline {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

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

.stat-item i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.stat-item span {
    font-size: 1.5rem;
    font-weight: 600;
    display: block;
}

.stat-item p {
    font-size: 0.9rem;
    opacity: 0.9;
}

.download-btn {
    display: inline-block;
    transition: transform 0.3s ease;
}

.download-btn:hover {
    transform: translateY(-3px);
}

.download-btn img {
    height: 80px;
    transition: transform 0.3s ease;
}

.download-btn:hover img {
    transform: scale(1.05);
}

/* App Screenshots */
.app-screenshots {
    position: relative;
}

.phone-frame {
    position: relative;
    width: 300px;
    height: 600px;
    margin: 0 auto;
    background: #2D3436;
    border-radius: 40px;
    padding: 10px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.phone-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 30px;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.phone-frame img.active {
    opacity: 1;
}

/* Features Section */
.features-section {
    padding: 60px 20px;
    background-color: #f8f9fa;
    text-align: center;
}

.features-section h2 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 20px;
}

.section-description {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

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

.feature-item {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-item i {
    font-size: 2.5rem;
    color: #007bff;
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 15px;
}

.feature-item p {
    color: #666;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
        padding: 0 20px;
    }
    
    .features-section h2 {
        font-size: 2rem;
    }
    
    .feature-item {
        padding: 20px;
    }
}

/* Info Section */
.info-section {
    padding: 4rem 2rem;
    background: white;
}

.info-section h2 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 3rem;
    font-size: 2rem;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.info-item {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.info-item:hover {
    transform: translateY(-5px);
}

.info-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.info-item h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.info-item ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.info-item ul li {
    margin-bottom: 0.5rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
}

.info-item ul li:before {
    content: "✓";
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.safety-section {
    padding: 4rem 2rem;
    background: var(--bg-light);
}

.safety-section h2 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 3rem;
    font-size: 2rem;
}

.safety-tips {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.tip {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.tip i {
    color: var(--primary-color);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.tip p {
    margin: 0;
    color: var(--text-color);
    line-height: 1.5;
}

@media (max-width: 768px) {
    .info-grid, .safety-tips {
        grid-template-columns: 1fr;
    }
    
    .info-item, .tip {
        margin-bottom: 1rem;
    }
}

/* CTA Section */
.cta-section {
    padding: 5rem 2rem;
    text-align: center;
    background: var(--light-background);
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.cta-section p {
    font-size: 1.2rem;
    color: var(--light-text);
    margin-bottom: 2rem;
}

/* Footer */
footer {
    padding: 2rem;
    text-align: center;
    background: var(--background);
}

.footer-links {
    margin-bottom: 1rem;
}

.footer-links a {
    color: var(--light-text);
    text-decoration: none;
    margin: 0 1rem;
    transition: color 0.3s ease;
}

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

footer p {
    color: var(--light-text);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .app-info h1 {
        font-size: 2.5rem;
    }

    .tagline {
        font-size: 1.2rem;
    }

    .stats {
        justify-content: center;
    }

    .phone-frame {
        width: 250px;
        height: 500px;
        margin-top: 2rem;
    }

    .features-section {
        grid-template-columns: 1fr;
        padding: 3rem 1rem;
    }

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

    .header {
        flex-direction: column;
        padding: 1rem;
    }

    .header-menu {
        margin-top: 1rem;
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    body {
        padding-top: 100px;
    }
}

.screenshots-section {
    padding: 4rem 2rem;
    background: #f8f9fa;
}

.screenshots-section h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #333;
    font-size: 2.5rem;
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.screenshot-item {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.screenshot-item:hover {
    transform: translateY(-5px);
}

.screenshot-frame {
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.screenshot-frame img {
    width: 100%;
    height: auto;
    display: block;
}

.screenshot-item h3 {
    color: #333;
    margin: 1rem 0 0.5rem;
    font-size: 1.2rem;
}

.screenshot-item p {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.4;
}

