/* Invoice Generator - Professional Styles */

.invoice-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.invoice-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.invoice-title {
    font-size: 3rem;
    font-weight: 800;
    font-family: 'Poppins', sans-serif;
    text-align: center;
    margin-bottom: 0.5rem;
    color: var(--text);
    letter-spacing: -0.02em;
}

.invoice-icon {
    font-size: 2.8rem;
    display: inline-block;
    animation: shake 2s infinite;
}

@keyframes shake {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(5deg); }
    75% { transform: rotate(-5deg); }
}

.invoice-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    font-family: 'Poppins', sans-serif;
}

.invoice-card {
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 2rem;
    box-shadow: var(--shadow);
}

/* Two column layout */
.invoice-editor {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

@media (max-width: 900px) {
    .invoice-editor {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .invoice-container {
        padding: 0 1rem;
    }
    .invoice-title {
        font-size: 2rem;
    }
}

/* Form Styling */
.form-section {
    background: var(--bg);
    border-radius: 20px;
    padding: 1.5rem;
    border: 1px solid var(--border);
}

.form-section h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
    color: var(--text-light);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.7rem 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    font-size: 0.9rem;
    transition: 0.2s;
    font-family: 'Inter', sans-serif;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.inline-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Items Table */
.items-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.items-table th,
.items-table td {
    border: 1px solid var(--border);
    padding: 0.6rem;
    text-align: left;
}

.items-table th {
    background: var(--surface);
    font-weight: 600;
}

.items-table input {
    width: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 0.4rem;
    border-radius: 6px;
    color: var(--text);
    font-size: 0.85rem;
}

.remove-item-btn {
    background: #ef4444;
    border: none;
    color: white;
    border-radius: 6px;
    cursor: pointer;
    padding: 0.3rem 0.6rem;
    font-size: 0.7rem;
    transition: 0.2s;
}

.remove-item-btn:hover {
    background: #dc2626;
    transform: scale(1.05);
}

.add-item-btn {
    margin-top: 1rem;
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 30px;
    cursor: pointer;
    font-size: 0.8rem;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: 0.2s;
}

.add-item-btn:hover {
    background: var(--primary-light);
    transform: translateY(-1px);
}

/* Summary Box */
.summary-box {
    margin-top: 1rem;
    background: var(--surface);
    border-radius: 12px;
    padding: 1rem;
}

.summary-input {
    background: var(--bg) !important;
    font-weight: 600;
}

.total-input {
    color: var(--primary) !important;
    font-weight: 800 !important;
    font-size: 1.1rem !important;
}

/* Preview Section */
.invoice-preview {
    background: var(--bg);
    border-radius: 20px;
    padding: 1rem;
    border: 1px solid var(--border);
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.preview-actions {
    display: flex;
    gap: 0.8rem;
}

.preview-btn {
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 0.4rem 1rem;
    border-radius: 30px;
    cursor: pointer;
    color: var(--text);
    font-size: 0.8rem;
    transition: 0.2s;
}

.preview-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.live-invoice-container {
    background: white;
    border-radius: 16px;
    overflow: auto;
    max-height: 70vh;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.dark-mode .live-invoice-container {
    background: #1e1e2e;
}

.live-invoice {
    background: white;
    color: #1e293b;
    padding: 2rem;
    font-family: 'Inter', sans-serif;
    min-width: 100%;
    width: 100%;
}

.dark-mode .live-invoice {
    background: #1e1e2e;
    color: #e2e8f0;
}

/* Tip Box */
.invoice-tip {
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    text-align: center;
    margin: 1rem 0;
    font-size: 0.85rem;
}

/* SEO Content */
.invoice-seo {
    margin-top: 2rem;
    padding: 2rem;
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.invoice-seo h2 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
    color: var(--text);
}

.invoice-seo h3 {
    font-size: 1.2rem;
    margin: 1rem 0 0.5rem;
    color: var(--primary);
}

.feature-list,
.howto-list {
    padding-left: 1.5rem;
    margin: 0.5rem 0 1rem;
}

.feature-list li,
.howto-list li {
    margin-bottom: 0.5rem;
    color: var(--text-light);
    line-height: 1.5;
}

.invoice-why {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--bg);
    border-radius: 12px;
    color: var(--text-light);
}

/* Related Tools Section */
.invoice-related {
    margin: 2rem 0;
    padding: 2rem;
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.invoice-related h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 1.5rem;
    text-align: center;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.related-category h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border);
}

.related-category ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.related-category li {
    margin-bottom: 0.7rem;
}

.related-category a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.related-category a:hover {
    color: var(--primary);
    transform: translateX(5px);
}

.related-footer {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    margin-top: 1rem;
}

.related-footer p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0;
}

/* PDF Capture Container (hidden) */
.pdf-capture-container {
    position: fixed;
    top: -9999px;
    left: -9999px;
    width: 800px;
    background: white;
    z-index: -1;
    opacity: 0;
    pointer-events: none;
}

/* Responsive */
@media (max-width: 768px) {
    .invoice-container {
        padding: 0 1rem;
    }
    
    .invoice-title {
        font-size: 2rem;
    }
    
    .invoice-card {
        padding: 1.2rem;
    }
    
    .form-section {
        padding: 1rem;
    }
    
    .items-table {
        font-size: 0.7rem;
    }
    
    .items-table th,
    .items-table td {
        padding: 0.4rem;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .invoice-seo h2 {
        font-size: 1.3rem;
    }
    
    .invoice-seo h3 {
        font-size: 1.1rem;
    }
}

/* Loading Animation for PDF Generation */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-content {
    background: var(--surface);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    color: var(--text);
}

.spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 1rem;
}

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

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}