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

/* Screen reader only - for accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

:root {
    --primary-color: #ff0050;
    --primary-hover: #e6004a;
    --secondary-color: #161823;
    --bg-color: #0f0f23;
    --card-bg: #1a1a2e;
    --text-primary: #ffffff;
    --text-secondary: #b8b8b8;
    --border-color: #2d2d44;
    --success-color: #00d4aa;
    --error-color: #ff4757;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 15px 50px rgba(255, 0, 80, 0.2);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 100%);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 20px;
    line-height: 1.6;
}

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

.header {
    text-align: center;
    margin-bottom: 50px;
    padding-top: 40px;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 16px;
}

.logo svg {
    color: var(--primary-color);
}

.logo h1 {
    font-size: 32px;
    font-weight: 700;
    background: linear-gradient(135deg, #ff0050 0%, #ff4081 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 400;
}

.main-content {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow);
    margin-bottom: 40px;
    border: 1px solid var(--border-color);
}

.input-section {
    margin-bottom: 30px;
}

.input-group {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.input-group input {
    flex: 1;
    padding: 16px 20px;
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 16px;
    font-family: inherit;
    transition: all 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(255, 0, 80, 0.1);
}

.input-group input::placeholder {
    color: var(--text-secondary);
}

.btn-primary {
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #ff4081 100%);
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    font-family: inherit;
    box-shadow: 0 4px 15px rgba(255, 0, 80, 0.3);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 14px;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.video-info {
    margin-top: 30px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.info-card {
    display: flex;
    gap: 20px;
    background: var(--bg-color);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-color);
}

.thumbnail-container {
    flex-shrink: 0;
    width: 120px;
    height: 160px;
    border-radius: 8px;
    overflow: hidden;
    background: var(--border-color);
}

.thumbnail-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.info-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.info-details h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
    line-height: 1.4;
}

.info-meta {
    display: flex;
    gap: 16px;
    color: var(--text-secondary);
    font-size: 14px;
}

.error-message,
.success-message {
    padding: 16px 20px;
    border-radius: 12px;
    margin-top: 20px;
    animation: fadeIn 0.3s ease;
    display: flex;
    align-items: center;
    gap: 12px;
}

.error-message {
    background: rgba(255, 71, 87, 0.1);
    border: 1px solid var(--error-color);
    color: var(--error-color);
}

.success-message {
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.feature-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 30px 20px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--primary-color);
}

.feature-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 14px;
}

.footer {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
    font-size: 14px;
    background: var(--card-bg);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    margin-top: 20px;
}

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

.footer-content h2,
.footer-content h3 {
    color: var(--text-primary);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-content > p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
    font-size: 14px;
}

.footer-copyright {
    margin: 24px 0;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.footer-copyright p {
    margin: 8px 0;
    color: var(--text-secondary);
}

.footer-copyright a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-copyright a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.footer-disclaimer {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    text-align: left;
    background: rgba(255, 0, 80, 0.05);
    padding: 20px;
    border-radius: 12px;
    border-left: 3px solid var(--primary-color);
}

.footer-disclaimer p {
    margin: 8px 0;
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer-disclaimer strong {
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .main-content {
        padding: 30px 20px;
    }

    .input-group {
        flex-direction: column;
    }

    .btn-primary {
        width: 100%;
        justify-content: center;
    }

    .logo h1 {
        font-size: 24px;
    }

    .info-card {
        flex-direction: column;
    }

    .thumbnail-container {
        width: 100%;
        height: 200px;
    }

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

    .footer {
        padding: 30px 15px;
    }

    .footer-content h2,
    .footer-content h3 {
        font-size: 18px;
    }

    .footer-disclaimer {
        text-align: left;
        padding: 15px;
    }
}