/**
 * Downloader UI CSS
 * 
 * Mobile-first responsive styles for downloader form
 * Used by all downloader pages
 */

/* CSS Variables */
:root {
    --dl-primary: #036d86;
    --dl-primary-hover: #025a6e;
    --dl-success: #10b981;
    --dl-danger: #ef4444;
    --dl-warning: #f59e0b;
    --dl-info: #3b82f6;
    
    --dl-bg: #ffffff;
    --dl-bg-secondary: #f8fafc;
    --dl-text: #1e293b;
    --dl-text-secondary: #64748b;
    --dl-text-light: #94a3b8;
    
    --dl-border: #e2e8f0;
    --dl-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --dl-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --dl-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --dl-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    
    --dl-radius-sm: 0.375rem;
    --dl-radius: 0.5rem;
    --dl-radius-lg: 0.75rem;
    --dl-radius-xl: 1rem;
    
    --dl-transition: 150ms ease-in-out;
    --dl-font: system-ui, -apple-system, sans-serif;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
    :root {
        --dl-bg: #0f172a;
        --dl-bg-secondary: #1e293b;
        --dl-text: #f1f5f9;
        --dl-text-secondary: #94a3b8;
        --dl-border: #334155;
    }
}

/* Wrapper */
.downloader-form-wrapper {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
}

/* Header */
.downloader-form-header {
    text-align: center;
    margin-bottom: 2rem;
}

.downloader-form-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--dl-text);
    margin: 0 0 0.5rem;
}

.downloader-form-subtitle {
    font-size: 1.125rem;
    color: var(--dl-text-secondary);
    margin: 0;
}

/* Form */
.downloader-form {
    background: var(--dl-bg);
    border-radius: var(--dl-radius-xl);
    box-shadow: var(--dl-shadow-lg);
    border: 1px solid var(--dl-border);
    padding: 1.5rem;
}

.downloader-form-inner {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

@media (min-width: 640px) {
    .downloader-form-inner {
        flex-direction: row;
        align-items: stretch;
    }
}

/* Input */
.downloader-input-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    background: var(--dl-bg-secondary);
    border: 2px solid var(--dl-border);
    border-radius: var(--dl-radius-lg);
    padding: 0.25rem;
    transition: border-color var(--dl-transition), box-shadow var(--dl-transition);
}

.downloader-input-wrapper:focus-within {
    border-color: var(--dl-primary);
    box-shadow: 0 0 0 3px rgba(3, 109, 134, 0.1);
}

.downloader-url-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 0.75rem 0.5rem;
    font-size: 1rem;
    font-family: var(--dl-font);
    color: var(--dl-text);
    outline: none;
    min-width: 0;
}

.downloader-url-input::placeholder {
    color: var(--dl-text-light);
}

/* Paste Button */
.downloader-paste-btn {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 0.75rem;
    background: transparent;
    border: none;
    color: var(--dl-text-secondary);
    font-size: 0.875rem;
    font-family: var(--dl-font);
    cursor: pointer;
    border-radius: var(--dl-radius-sm);
    transition: all var(--dl-transition);
    white-space: nowrap;
}

.downloader-paste-btn:hover {
    background: var(--dl-bg);
    color: var(--dl-primary);
}

.downloader-paste-btn:focus {
    outline: 2px solid var(--dl-primary);
    outline-offset: 2px;
}

.downloader-paste-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Submit Button */
.downloader-submit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--dl-primary) 0%, var(--dl-primary-hover) 100%);
    color: #fff;
    border: none;
    border-radius: var(--dl-radius-lg);
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--dl-font);
    cursor: pointer;
    transition: all var(--dl-transition);
    box-shadow: 0 4px 14px rgba(3, 109, 134, 0.4);
    white-space: nowrap;
}

.downloader-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(3, 109, 134, 0.5);
}

.downloader-submit-btn:focus {
    outline: 2px solid var(--dl-primary);
    outline-offset: 2px;
}

.downloader-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Alert */
.downloader-alert {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: var(--dl-radius);
    font-size: 0.875rem;
    display: none;
}

.downloader-alert.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fcd34d;
}

.downloader-alert.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.downloader-alert.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

/* Result */
.downloader-result {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--dl-bg);
    border-radius: var(--dl-radius-xl);
    box-shadow: var(--dl-shadow-lg);
    border: 1px solid var(--dl-border);
}

.result-content {
    width: 100%;
}

.result-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.result-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dl-text);
    margin: 0 0 0.5rem;
}

.result-duration {
    font-size: 0.875rem;
    color: var(--dl-text-secondary);
    font-weight: normal;
}

.result-thumbnail {
    max-width: 100%;
    height: auto;
    max-height: 300px;
    object-fit: cover;
    border-radius: var(--dl-radius-lg);
    margin-top: 1rem;
    box-shadow: var(--dl-shadow-md);
}

.result-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

/* Download Links */
.download-link {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.75rem 1rem;
    border-radius: var(--dl-radius-lg);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--dl-transition);
    min-width: 100px;
    text-align: center;
}

.download-link:focus {
    outline: 2px solid var(--dl-primary);
    outline-offset: 2px;
}

.download-link.btn-primary {
    background: var(--dl-primary);
    color: #fff;
}

.download-link.btn-primary:hover {
    background: var(--dl-primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--dl-shadow-md);
}

.download-link.btn-success {
    background: var(--dl-success);
    color: #fff;
}

.download-link.btn-success:hover {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: var(--dl-shadow-md);
}

.download-link.btn-danger {
    background: var(--dl-danger);
    color: #fff;
}

.download-link.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-2px);
    box-shadow: var(--dl-shadow-md);
}

.link-icon {
    display: flex;
}

.link-quality {
    font-size: 0.875rem;
    font-weight: 600;
}

.link-meta {
    font-size: 0.75rem;
    opacity: 0.85;
}

.no-media {
    text-align: center;
    color: var(--dl-text-secondary);
    padding: 1.5rem;
}

/* Loader */
.downloader-loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 2rem;
    text-align: center;
}

.downloader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--dl-border);
    border-top-color: var(--dl-primary);
    border-radius: 50%;
    animation: dl-spin 1s linear infinite;
}

@keyframes dl-spin {
    to { transform: rotate(360deg); }
}

/* Mobile */
@media (max-width: 640px) {
    .downloader-form-wrapper {
        padding: 1rem;
    }
    
    .downloader-form {
        padding: 1rem;
    }
    
    .downloader-form-inner {
        flex-direction: column;
    }
    
    .downloader-input-wrapper {
        width: 100%;
    }
    
    .downloader-submit-btn {
        width: 100%;
    }
    
    .paste-text {
        display: none;
    }
    
    .result-links {
        flex-direction: column;
    }
    
    .download-link {
        width: 100%;
        flex-direction: row;
        justify-content: center;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}