@font-face {
    font-family: 'Montserrat';
    src: url('../fonts/Montserrat-Medium.woff2') format('woff2');
    font-weight: 500;
}

@font-face {
    font-family: 'Montserrat';
    src: url('../fonts/Montserrat-SemiBold.woff2') format('woff2');
    font-weight: 600;
}

@font-face {
    font-family: 'Montserrat';
    src: url('../fonts/Montserrat-Bold.woff2') format('woff2');
    font-weight: 700;
}

:root {
    --primary-color: #61C1E8;
    --text-color: #1D1D1F;
    --background-color: #FFFFFF;
    --secondary-background: #F5F5F7;
    --spacing-unit: 1rem;
}

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

body {
    font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
    font-weight: 500;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 2rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.logo-icon {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    transition: color 0.3s ease;
}

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

/* Dil değiştirici stilleri */
.language-switch {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: 1rem;
}

.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 30px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #e4e4e4;
    transition: .4s;
    border-radius: 30px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(30px);
}

.language-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-color);
}

.language-label.active {
    color: var(--primary-color);
}

main {
    margin-top: 80px;
}

.hero {
    text-align: center;
    padding: 8rem 2rem;
    background-color: var(--secondary-background);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(120deg, rgba(97, 193, 232, 0.1) 0%, transparent 40%),
        linear-gradient(-120deg, rgba(97, 193, 232, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 80% 20%, rgba(97, 193, 232, 0.1) 0%, transparent 30%),
        radial-gradient(circle at 20% 80%, rgba(97, 193, 232, 0.1) 0%, transparent 30%);
    z-index: 1;
}

.hero::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background: 
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0h20v20H0V0zm10 17L3 10l3-3 4 4 4-4 3 3-7 7zm30 0l-7-7 3-3 4 4 4-4 3 3-7 7zM30 0h20v20H30V0zm20 40v20H30V40h20zm0-40h20v20H50V0zm10 17l-7-7 3-3 4 4 4-4 3 3-7 7zM30 30h20v10H30V30zm-20 0h20v10H10V30z' fill='%2361C1E8' fill-opacity='0.05'/%3E%3C/svg%3E"),
        url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0h20v20H0V0zm10 17L3 10l3-3 4 4 4-4 3 3-7 7z' fill='%2361C1E8' fill-opacity='0.05'/%3E%3C/svg%3E");
    background-position: center center, 10px 10px;
    background-size: 60px 60px, 40px 40px;
    opacity: 0.5;
    z-index: 0;
}

.hero h1, .hero p, .hero .cta-button {
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: var(--text-color);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: #6e6e73;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 500;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

.features {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.features h2 {
    text-align: center;
    margin-bottom: 4rem;
    font-size: 2.5rem;
}

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

.feature-card {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 20px;
    transition: transform 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

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

.feature-card img {
    width: 64px;
    height: 64px;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.how-to {
    background: var(--secondary-background);
    padding: 6rem 2rem;
}

.how-to h2 {
    text-align: center;
    margin-bottom: 4rem;
    font-size: 2.5rem;
}

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

.step {
    display: flex;
    align-items: center;
    margin-bottom: 3rem;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.step-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
    min-width: 50px;
    text-align: center;
    margin-right: 2rem;
}

.step h3 {
    margin: 0;
    font-size: 1.5rem;
    margin-right: 1rem;
}

.step p {
    margin: 0;
    color: #6e6e73;
}

.video-section {
    padding: 6rem 2rem;
    text-align: center;
    background: var(--background-color);
}

.video-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.video-section p {
    font-size: 1.25rem;
    color: #6e6e73;
    margin-bottom: 3rem;
}

.video-container {
    max-width: 860px;
    margin: 0 auto;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    border-radius: 20px;
    overflow: hidden;
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    background: white;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.contact {
    text-align: center;
    padding: 6rem 2rem;
    background: var(--secondary-background);
}

.contact h2 {
    margin-bottom: 1.5rem;
    font-size: 2.5rem;
}

.contact p {
    margin-bottom: 2rem;
    color: #6e6e73;
}

.contact-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 30px;
    transition: transform 0.3s ease;
}

.contact-button:hover {
    transform: translateY(-2px);
}

.footer {
    text-align: center;
    padding: 2rem;
    background: var(--background-color);
    color: #6e6e73;
}

.mobile-menu-button {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-button span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--text-color);
    margin: 5px 0;
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .nav {
        position: relative;
    }

    .nav-links {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        padding: 1rem;
        gap: 1rem;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all 0.3s ease;
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .language-switch {
        margin: 0.5rem 0;
    }

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

    .step {
        flex-direction: column;
        text-align: center;
        padding: 2rem 1rem;
    }

    .step-number {
        margin-right: 0;
        margin-bottom: 1rem;
    }

    .step h3 {
        margin-right: 0;
        margin-bottom: 0.5rem;
    }

    .video-container {
        margin: 0 -1rem;
        border-radius: 0;
    }

    .mobile-menu-button {
        display: block;
    }

    .mobile-menu-button.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-button.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-button.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
}