/* Main Container */
.ltqr-container {
    margin: 2rem auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

/* Card Design */
.ltqr-card {
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid #e1e5e9;
    overflow: hidden;
    transition: all 0.3s ease;
}

.ltqr-card:hover {
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

/* Header */
.ltqr-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 2rem;
    text-align: center;
}

.ltqr-title {
    color: white;
    margin: 0;
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* Body */
.ltqr-body {
    padding: 2.5rem;
}

/* Input Group */
.ltqr-input-group {
    display: flex;
    gap: 12px;
    margin-bottom: 2rem;
}

.ltqr-url-input {
    flex: 1;
    padding: 16px 20px;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.ltqr-url-input:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.ltqr-generate-btn {
    padding: 16px 32px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.ltqr-generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.ltqr-generate-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Result Section */
.ltqr-result {
    text-align: center;
    animation: fadeIn 0.5s ease;
}

.ltqr-qr-container {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    border: 1px solid #e1e5e9;
}

.ltqr-qr-image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* Download Button */
.ltqr-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.ltqr-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(76, 175, 80, 0.4);
}

.ltqr-download-icon {
    font-size: 18px;
    font-weight: bold;
}

/* Loading Animation */
.ltqr-loading {
    text-align: center;
    padding: 3rem;
}

.ltqr-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #e1e5e9;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

.ltqr-loading p {
    color: #667eea;
    font-weight: 600;
    margin: 0;
}

/* Error Message */
.ltqr-error {
    background: #ffeaa7;
    color: #e17055;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    border: 1px solid #fab1a0;
    text-align: center;
    font-weight: 600;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .ltqr-body {
        padding: 1.5rem;
    }
    
    .ltqr-input-group {
        flex-direction: column;
    }
    
    .ltqr-header {
        padding: 1.5rem;
    }
    
    .ltqr-title {
        font-size: 1.5rem;
    }
    
    .ltqr-generate-btn,
    .ltqr-download-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .ltqr-body {
        padding: 1rem;
    }
    
    .ltqr-header {
        padding: 1rem;
    }
    
    .ltqr-title {
        font-size: 1.25rem;
    }
}