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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

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

/* Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}


/* Main Content */
.main-content {
    padding: 60px 20px;
}

.hero-section {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.hero-section h1 {
    font-size: 42px;
    color: white;
    margin-bottom: 15px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
}

.url-input-container {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    margin-bottom: 30px;
}

.url-input {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    margin-bottom: 15px;
    transition: border-color 0.3s;
}

.url-input:focus {
    outline: none;
    border-color: #667eea;
}

.btn-primary {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.download-buttons {
    display: flex;
    gap: 15px;
    margin: 30px 0;
    flex-wrap: wrap;
    justify-content: center;
}

.btn-download {
    flex: 1;
    min-width: 200px;
    padding: 18px 30px;
    background: white;
    color: #333;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(0,0,0,0.2);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-download span {
    font-size: 20px;
}

/* Ad Container */
.ad-container {
    margin: 30px 0;
    padding: 20px;
    background: white;
    border-radius: 12px;
    text-align: center;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Fullscreen Ad */
.fullscreen-ad {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.ad-content {
    max-width: 90%;
    max-height: 80vh;
    margin-bottom: 30px;
}

.skip-ad-container {
    width: 100%;
    text-align: center;
    padding: 0 20px;
}

.skip-ad-btn {
    padding: 15px 30px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: not-allowed;
    transition: all 0.3s;
    width: 100%;
    max-width: 300px;
    white-space: nowrap;
}

.skip-ad-btn:not(:disabled) {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    cursor: pointer;
}

.skip-ad-btn:not(:disabled):hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.5);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-content {
    background: white;
    border-radius: 15px;
    padding: 30px;
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.close-modal {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 32px;
    cursor: pointer;
    color: #999;
    line-height: 1;
}

.close-modal:hover {
    color: #333;
}

.modal-content h2 {
    margin-bottom: 20px;
    color: #333;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

/* Footer */
.footer {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 30px 0;
    margin-top: 60px;
    border-top: 1px solid rgba(0,0,0,0.1);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    text-align: center;
}

.footer-links {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    padding: 10px 24px;
    border: 2px solid #667eea;
    border-radius: 25px;
    transition: all 0.3s ease;
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
}

.footer-links a:hover {
    color: white;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-color: #764ba2;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.footer-text {
    color: #666;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {

    .hero-section h1 {
        font-size: 28px;
    }

    .subtitle {
        font-size: 16px;
    }

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

    .btn-download {
        width: 100%;
        min-width: auto;
    }

    .url-input-container {
        padding: 20px;
    }

    .fullscreen-ad {
        padding: 10px;
    }

    .ad-content {
        max-width: 95%;
        max-height: 70vh;
    }

    .skip-ad-container {
        padding: 0 10px;
    }

    .skip-ad-btn {
        padding: 12px 20px;
        font-size: 14px;
        max-width: 100%;
    }

    #countdown {
        display: inline-block;
        min-width: 20px;
    }

    .modal-content {
        padding: 20px;
        max-width: 95%;
        max-height: 90vh;
    }

    .footer-links {
        gap: 10px;
    }

    .footer-links a {
        padding: 8px 18px;
        font-size: 14px;
    }
}