:root {
    --mqrg-primary: #0a68ff;
    --mqrg-primary-dark: #0059e0;
    --mqrg-secondary: #6c2eb9;
    --mqrg-text: #333;
    --mqrg-light-gray: #f0f2f5;
    --mqrg-border-color: #dce1e6;
    --mqrg-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
.mqrg-wrap { 
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif; 
    max-width: 850px; 
    margin: 20px auto;
    color: var(--mqrg-text);
}
.mqrg-wrap h2, .mqrg-wrap h3 {
    font-weight: 600;
}
.mqrg-container { 
    display: flex; 
    gap: 40px; 
    margin-top: 25px; 
    flex-wrap: wrap; 
    background: #ffffff; 
    padding: 30px; 
    border-radius: 16px; 
    box-shadow: var(--mqrg-shadow);
}
.mqrg-form-section { flex: 1; min-width: 300px; }
.mqrg-result-section { flex: 1; min-width: 256px; text-align: center; }

.mqrg-input-group, .mqrg-options { 
    margin-bottom: 25px; 
}
.mqrg-input-group label, .mqrg-options h3 { 
    font-size: 1em; 
    margin: 0 0 10px; 
    display: block; 
    font-weight: 600; 
    color: #555;
}
.mqrg-input { 
    width: 100%; 
    padding: 12px 15px; 
    border-radius: 8px; 
    border: 1px solid var(--mqrg-border-color);
    font-size: 16px;
    transition: border-color 0.3s, box-shadow 0.3s;
}
.mqrg-input:focus {
    outline: none;
    border-color: var(--mqrg-primary);
    box-shadow: 0 0 0 3px rgba(10, 104, 255, 0.2);
}
.mqrg-color-palette { 
    display: flex; 
    gap: 12px; 
    margin-top: 10px; 
    align-items: center;
}
.mqrg-color-dot { 
    width: 32px; 
    height: 32px; 
    border-radius: 50%; 
    cursor: pointer; 
    border: 2px solid #fff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
    position: relative;
}
.mqrg-color-dot:hover {
    transform: scale(1.1);
}
.mqrg-color-dot.active {
    box-shadow: 0 0 0 3px var(--mqrg-primary);
    transform: scale(1.1);
}

.mqrg-generate-btn, .mqrg-copy-btn, .mqrg-download-btn {
    width: 100%;
    padding: 12px 20px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    -webkit-appearance: none;
}
.mqrg-generate-btn {
    background: linear-gradient(45deg, var(--mqrg-primary), var(--mqrg-secondary));
    color: #fff;
    box-shadow: 0 4px 10px rgba(10, 104, 255, 0.3);
}
.mqrg-generate-btn:hover {
    box-shadow: 0 6px 15px rgba(10, 104, 255, 0.4);
    transform: translateY(-2px);
}

.spinner { float: none; vertical-align: middle; margin-left: 10px; }

.mqrg-qrcode-container { 
    width: 100%;
    max-width: 280px;
    aspect-ratio: 1 / 1;
    margin: 0 auto; 
    padding: 16px; 
    background: #fff; 
    border: 1px solid var(--mqrg-border-color); 
    border-radius: 12px; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    position: relative; 
    box-shadow: var(--mqrg-shadow);
}
.mqrg-qrcode-container img, .mqrg-qrcode-container canvas { 
    max-width: 100%; 
    height: auto; 
    border-radius: 6px;
}
.mqrg-placeholder-text { color: #888; }

.mqrg-result-actions { margin-top: 25px; }
.mqrg-shortlink-wrapper { margin-bottom: 15px; }
.mqrg-shortlink-output { 
    width: 100%; 
    padding: 10px; 
    background: var(--mqrg-light-gray); 
    border: 1px solid var(--mqrg-border-color); 
    border-radius: 8px; 
    text-align: center;
    font-family: 'SF Mono', 'Courier New', monospace;
    color: var(--mqrg-text);
    font-size: 14px;
}

.mqrg-buttons-wrapper { display: flex; gap: 10px; justify-content: center; }
.mqrg-copy-btn {
    background: var(--mqrg-light-gray);
    color: var(--mqrg-text);
}
.mqrg-copy-btn:hover {
    background: #e1e4e8;
}
.mqrg-download-btn {
    background: var(--mqrg-primary);
    color: #fff;
}
.mqrg-download-btn:hover {
    background: var(--mqrg-primary-dark);
}
.mqrg-feedback { 
    display: none; 
    margin-top: 10px; 
    color: #28a745; 
    font-weight: 500; 
    animation: fadeInOut 2s forwards;
}
@keyframes fadeInOut {
    0% { opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { opacity: 0; }
}