:root {
    --skill-qr-primary: #3b82f6;
    --skill-qr-primary-hover: #2563eb;
    --skill-qr-bg-gradient: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    --skill-qr-card-bg: #ffffff;
    --skill-qr-text-main: #1e293b;
    --skill-qr-text-muted: #64748b;
    --skill-qr-border: #e2e8f0;
    --skill-qr-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
    --skill-qr-radius: 20px;
}

.skill-qr-generator-container {
    max-width: 1100px;
    margin: 60px auto;
    background: var(--skill-qr-card-bg);
    border-radius: var(--skill-qr-radius);
    box-shadow: var(--skill-qr-shadow);
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    overflow: hidden;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    border: 1px solid var(--skill-qr-border);
}

@media (max-width: 900px) {
    .skill-qr-generator-container {
        grid-template-columns: 1fr;
    }
}

.skill-qr-input-section {
    padding: 50px;
    border-right: 1px solid var(--skill-qr-border);
}

.skill-qr-preview-section {
    padding: 50px;
    background: #f8fafc;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.skill-qr-type-selector {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 12px;
    margin-bottom: 40px;
}

.type-btn {
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--skill-qr-border);
    background: #fff;
    color: var(--skill-qr-text-muted);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.type-btn i {
    font-size: 18px;
}

.type-btn:hover {
    border-color: var(--skill-qr-primary);
    color: var(--skill-qr-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 6px -1px rgba(59, 130, 246, 0.1);
}

.type-btn.active {
    background: var(--skill-qr-primary);
    color: #fff;
    border-color: var(--skill-qr-primary);
    box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.2);
}

.qr-input-field {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid var(--skill-qr-border);
    border-radius: 14px;
    font-size: 16px;
    color: var(--skill-qr-text-main);
    background: #fff;
    transition: all 0.3s;
}

.qr-input-field:focus {
    border-color: var(--skill-qr-primary);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
    outline: none;
}

.skill-qr-advanced-options {
    background: #f8fafc;
    padding: 24px;
    border-radius: 16px;
    margin: 30px 0;
}

.preview-box {
    width: 320px;
    height: 320px;
    background: #fff;
    border-radius: 24px;
    padding: 20px;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 40px;
    position: relative;
    border: 1px solid var(--skill-qr-border);
}

.preview-box img {
    max-width: 100%;
    height: auto;
}

.download-btn {
    width: 100%;
    padding: 18px;
    background: var(--skill-qr-primary);
    color: #fff;
    border: none;
    border-radius: 16px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.3);
}

.download-btn:hover {
    background: var(--skill-qr-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 20px 25px -5px rgba(59, 130, 246, 0.4);
}

.download-btn:disabled {
    background: #94a3b8;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Custom Checkbox */
input[type="checkbox"] {
    width: 20px;
    height: 20px;
    border-radius: 6px;
    border: 2px solid var(--skill-qr-border);
    cursor: pointer;
}

/* Modal styles for Dynamic QR management */
#qr-timer-overlay {
    backdrop-filter: blur(10px);
}