:root {
    --svd-primary: #3b82f6;
    --svd-primary-hover: #2563eb;
    --svd-bg: #ffffff;
    --svd-text: #1f2937;
    --svd-border: rgba(0,0,0,0.1);
    --svd-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* Glassmorphism Theme */
.svd-wrap.theme-glass {
    background: rgba( 255, 255, 255, 0.7 );
    backdrop-filter: blur( 10px );
    -webkit-backdrop-filter: blur( 10px );
    border: 1px solid rgba( 255, 255, 255, 0.3 );
    box-shadow: 0 8px 32px 0 rgba( 31, 38, 135, 0.15 );
    border-radius: 16px;
    padding: 2rem;
    max-width: 600px;
    margin: 20px auto;
}

/* Flat Theme */
.svd-wrap.theme-flat {
    background: #f3f4f6;
    border-radius: 8px;
    padding: 2rem;
    max-width: 600px;
    margin: 20px auto;
    border: 1px solid #e5e7eb;
}

/* Dark Theme */
.svd-wrap.theme-dark {
    background: #1f2937;
    color: #ffffff;
    border-radius: 12px;
    padding: 2rem;
    max-width: 600px;
    margin: 20px auto;
    --svd-text: #ffffff;
    --svd-border: rgba(255,255,255,0.1);
}

.svd-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--svd-border);
    padding-bottom: 10px;
}

.svd-tab {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px 16px;
    font-weight: 600;
    opacity: 0.6;
    transition: 0.3s;
    color: var(--svd-text);
}

.svd-tab.active {
    opacity: 1;
    border-bottom: 2px solid var(--svd-primary);
}

.svd-pane {
    display: none;
}
.svd-pane.active {
    display: block;
}

.svd-input-group {
    display: flex;
    gap: 10px;
}

.svd-url-input {
    flex: 1;
    padding: 12px;
    border: 1px solid var(--svd-border);
    border-radius: 8px;
    background: rgba(255,255,255,0.5);
}

.svd-btn-download {
    background: var(--svd-primary);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.3s;
}

.svd-btn-download:hover {
    background: var(--svd-primary-hover);
}

.svd-loader {
    margin-top: 15px;
    text-align: center;
    color: var(--svd-text);
}

.hidden {
    display: none;
}

.svd-result {
    margin-top: 20px;
    animation: fadeIn 0.5s ease;
}

.svd-card-result {
    display: flex;
    gap: 15px;
    background: rgba(255,255,255,0.1);
    padding: 10px;
    border-radius: 8px;
    align-items: center;
}

.svd-thumb {
    width: 120px;
    border-radius: 6px;
}

.svd-info h4 {
    margin: 0 0 5px 0;
    font-size: 16px;
    color: var(--svd-text);
}

.svd-btn-save {
    display: inline-block;
    margin-top: 5px;
    background: #10b981;
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
}

.svd-error {
    color: #ef4444;
    margin-top: 10px;
    text-align: center;
}

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