:root {
    /* Color Palette - Elegant Green & White */
    --primary-green: #0f6b4a;
    --primary-green-light: #12875e;
    --primary-green-dark: #0a4d35;
    --accent-green: #1ea672;
    --accent-gold: #d4af37;
    
    --white: #ffffff;
    --off-white: #fafafa;
    --light-gray: #f5f7f6;
    --medium-gray: #e0e5e3;
    --dark-gray: #4a5654;
    --text-primary: #1a2623;
    --text-secondary: #5a6865;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(15, 107, 74, 0.08);
    --shadow-md: 0 4px 16px rgba(15, 107, 74, 0.12);
    --shadow-lg: 0 8px 32px rgba(15, 107, 74, 0.16);
    
    /* Typography */
    --font-display: 'Playfair Display', serif;
    --font-body: 'Work Sans', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

*::before,
*::after {
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background: linear-gradient(135deg, var(--off-white) 0%, var(--light-gray) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.app-header {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border-bottom: 1px solid #bbf7d0;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-logo {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

.logo-text {
    font-family: var(--font-body);
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.3px;
    margin: 0;
}

.header-actions {
    display: flex;
    gap: 12px;
}

/* Buttons */
.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-green) 0%, #15803d 100%);
    color: var(--white);
    box-shadow: 0 2px 4px 0 rgba(22, 163, 74, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #15803d 0%, #14532d 100%);
    box-shadow: 0 4px 6px 0 rgba(22, 163, 74, 0.3);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--white);
    color: var(--text-primary);
    border: 1px solid #d1d5db;
}

.btn-secondary:hover {
    background: #f0fdf4;
    border-color: #bbf7d0;
    color: var(--primary-green);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

/* Main Content */
.main-content {
    padding: 24px 0;
    background: linear-gradient(to bottom, #f0fdf4 0%, #f9fafb 50%);
    min-height: calc(100vh - 69px);
}

.invoice-section {
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    border: 1px solid #e5e7eb;
    padding: 24px;
    margin-bottom: 24px;
}
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.6s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid #bbf7d0;
    background: linear-gradient(to right, #f0fdf4 0%, transparent 100%);
    padding: 12px 16px;
    margin: -24px -24px 24px -24px;
    border-radius: 12px 12px 0 0;
}

.section-header h2 {
    font-family: var(--font-body);
    font-size: 18px;
    font-weight: 600;
    color: #166534;
    margin: 0;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.theme-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.theme-selector label {
    font-weight: 500;
    color: var(--text-secondary);
}

.theme-selector select {
    padding: 0.5rem 1rem;
    border: 2px solid var(--medium-gray);
    border-radius: 8px;
    font-family: var(--font-body);
    font-weight: 500;
    background: var(--white);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-selector select:focus {
    outline: none;
    border-color: var(--primary-green);
}

/* Tabs */
.form-tabs {
    display: flex;
    gap: var(--spacing-xs);
}

.tab-btn {
    padding: 0.5rem 1.25rem;
    background: var(--light-gray);
    border: 2px solid transparent;
    border-radius: 8px;
    font-family: var(--font-body);
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab-btn.active {
    background: var(--primary-green);
    color: var(--white);
    border-color: var(--primary-green-dark);
}

.tab-btn:hover:not(.active) {
    background: var(--medium-gray);
}

/* Tab Content */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Form */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.form-section {
    background: var(--white);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
    transition: all 0.2s ease;
}

.form-section:hover {
    border-color: #bbf7d0;
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.form-section.full-width {
    grid-column: 1 / -1;
}

.section-title {
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 600;
    color: #166534;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid #bbf7d0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-title::before {
    content: '';
    width: 4px;
    height: 20px;
    background: linear-gradient(to bottom, var(--primary-green), #bbf7d0);
    border-radius: 2px;
}

.section-header-inline {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-weight: 500;
    color: #374151;
    margin-bottom: 6px;
    font-size: 13px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--text-primary);
    background: var(--white);
    transition: all 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

/* Logo Upload */
.logo-upload {
    margin-bottom: 16px;
}

.logo-preview {
    width: 120px;
    height: 120px;
    border: 2px dashed #bbf7d0;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    overflow: hidden;
    background: linear-gradient(135deg, #f0fdf4 0%, #ffffff 100%);
    transition: all 0.2s ease;
}

.logo-preview:hover {
    border-color: var(--primary-green);
    background: #f0fdf4;
}
}

.logo-preview:hover {
    border-color: var(--accent-green);
}

.logo-preview img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.logo-preview .placeholder {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.logo-inputs {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
}

.logo-inputs input[type="text"] {
    flex: 1;
}

/* Items Container */
.items-container {
    margin-bottom: var(--spacing-md);
}

.item-row {
    background: var(--white);
    padding: var(--spacing-md);
    border: 2px solid var(--medium-gray);
    border-radius: 8px;
    margin-bottom: var(--spacing-sm);
    position: relative;
    transition: all var(--transition-fast);
    animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.item-row:hover {
    border-color: var(--accent-green);
    box-shadow: var(--shadow-sm);
}

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.item-title {
    font-weight: 600;
    color: var(--primary-green);
}

.remove-item-btn {
    background: none;
    border: none;
    color: #dc2626;
    cursor: pointer;
    padding: 0.25rem;
    transition: transform var(--transition-fast);
}

.remove-item-btn:hover {
    transform: scale(1.2);
}

.item-fields {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: var(--spacing-sm);
    align-items: end;
}

.discount-toggle {
    grid-column: 1 / -1;
    margin-top: var(--spacing-xs);
}

.discount-toggle label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    font-size: 0.875rem;
}

.discount-toggle input[type="checkbox"] {
    width: auto;
}

.discount-fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

/* Calculations */
.calculations {
    background: var(--light-gray);
    padding: var(--spacing-md);
    border-radius: 8px;
    border: 2px solid var(--primary-green);
}

.calc-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) 0;
    font-size: 1rem;
}

.calc-row.total {
    border-top: 2px solid var(--primary-green);
    margin-top: var(--spacing-xs);
    padding-top: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-green);
}

.tax-input {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.tax-input input {
    width: 80px;
    padding: 0.5rem;
    border: 2px solid var(--medium-gray);
    border-radius: 6px;
    text-align: center;
}

/* Signature Canvas */
.signature-section {
    border: 2px solid var(--medium-gray);
    border-radius: 8px;
    padding: var(--spacing-sm);
    background: var(--white);
}

#signatureCanvas {
    width: 100%;
    height: 200px;
    border: 1px solid var(--medium-gray);
    border-radius: 4px;
    cursor: crosshair;
    background: var(--off-white);
}

.signature-controls {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
    margin-top: var(--spacing-sm);
    justify-content: center;
}

/* Form Actions */
.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--medium-gray);
}

/* Search & Filter */
.search-filter {
    display: flex;
    gap: var(--spacing-sm);
}

.search-filter input,
.search-filter select {
    padding: 0.75rem;
    border: 2px solid var(--medium-gray);
    border-radius: 8px;
    font-family: var(--font-body);
}

.search-filter input {
    width: 300px;
}

/* Invoice Table */
.invoice-table-container {
    overflow-x: auto;
    border-radius: 8px;
    border: 2px solid var(--medium-gray);
}

.invoice-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
}

.invoice-table thead {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-light) 100%);
    color: var(--white);
}

.invoice-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    font-size: 0.95rem;
}

.invoice-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--medium-gray);
}

.invoice-table tbody tr {
    transition: background var(--transition-fast);
}

.invoice-table tbody tr:hover {
    background: var(--light-gray);
}

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.status-badge.lunas {
    background: #dcfce7;
    color: #166534;
}

.status-badge.belum-lunas {
    background: #fef3c7;
    color: #92400e;
}

.action-buttons {
    display: flex;
    gap: var(--spacing-xs);
}

.icon-btn {
    padding: 0.5rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    border-radius: 6px;
}

.icon-btn:hover {
    background: var(--light-gray);
    color: var(--primary-green);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--white);
    border-radius: 16px;
    max-width: 900px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    animation: slideInUp 0.4s ease;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-content.modal-large {
    max-width: 1100px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    border-bottom: 2px solid var(--medium-gray);
}

.modal-header h2 {
    font-family: var(--font-display);
    color: var(--primary-green);
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    line-height: 1;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--primary-green);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    overflow-x: hidden;
    flex: 1;
    background: #f9fafb;
}

.modal-body::-webkit-scrollbar {
    width: 8px;
}

.modal-body::-webkit-scrollbar-track {
    background: var(--light-gray);
}

.modal-body::-webkit-scrollbar-thumb {
    background: var(--medium-gray);
    border-radius: 4px;
}

.modal-body::-webkit-scrollbar-thumb:hover {
    background: var(--primary-green);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-top: 2px solid var(--medium-gray);
    background: var(--off-white);
}

.invoice-preview * {
    box-sizing: border-box;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
}

.invoice-preview table {
    border-spacing: 0;
    border-collapse: collapse;
}

.invoice-preview img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Invoice Preview */
.invoice-preview {
    background: var(--white);
    padding: 40px 30px;
    border: 1px solid var(--medium-gray);
    border-radius: 0;
    width: 794px;
    min-height: 1123px;
    margin: 0 auto;
    position: relative;
    font-size: 14px;
    line-height: 1.6;
    box-sizing: border-box;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
}

.invoice-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 50px;
    padding-bottom: 20px;
}

.company-info {
    flex: 1;
}

.invoice-logo {
    max-width: 120px;
    max-height: 120px;
    margin-bottom: 15px;
    object-fit: contain;
}

.company-name {
    font-family: var(--font-display);
    font-size: 20px;
    color: var(--primary-green);
    margin: 10px 0;
    font-weight: 600;
}

.company-address {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.6;
    white-space: pre-line;
}

.invoice-details-header {
    text-align: right;
    flex-shrink: 0;
}

.invoice-title {
    font-family: var(--font-display);
    font-size: 36px;
    color: var(--primary-green);
    margin: 0 0 10px 0;
    font-weight: 700;
    letter-spacing: 2px;
}

.invoice-number {
    font-family: var(--font-body);
    font-size: 28px;
    color: var(--primary-green);
    margin: 0 0 15px 0;
    font-weight: 600;
    letter-spacing: 2px;
}

.invoice-date {
    color: var(--text-secondary);
    font-size: 13px;
    margin: 5px 0;
}

.invoice-parties {
    display: flex;
    justify-content: space-between;
    gap: 40px;
    margin-bottom: 40px;
}

.party-section {
    flex: 1;
}

.party-title {
    font-family: var(--font-display);
    color: var(--primary-green);
    margin-bottom: 10px;
    font-size: 16px;
    font-weight: 600;
}

.party-details {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.8;
}

.party-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.party-address {
    margin: 5px 0;
    white-space: pre-line;
}

.party-contact {
    margin: 3px 0;
}

.invoice-items-table {
    width: 100%;
    margin-bottom: 30px;
    border-collapse: collapse;
    font-size: 13px;
    table-layout: fixed;
}

.invoice-items-table thead {
    background: var(--primary-green);
    color: var(--white);
}

.invoice-items-table th {
    padding: 10px 8px;
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    border: 1px solid var(--primary-green);
    box-sizing: border-box;
    overflow: hidden;
}

.invoice-items-table td {
    padding: 10px 8px;
    color: var(--text-primary);
    border: 1px solid #d1d5db;
    vertical-align: top;
    box-sizing: border-box;
    word-wrap: break-word;
    overflow: hidden;
    text-overflow: ellipsis;
}

.invoice-items-table tbody tr:hover {
    background: var(--light-gray);
}

.invoice-summary {
    margin-left: auto;
    width: 350px;
    margin-bottom: 40px;
    border: 2px solid var(--primary-green);
    border-radius: 0;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 12px 20px;
    font-size: 14px;
    border-bottom: 1px solid var(--medium-gray);
}

.summary-row:last-child {
    border-bottom: none;
}

.summary-row.total {
    background: var(--primary-green);
    color: var(--white);
    font-size: 18px;
    font-weight: 700;
    border-top: 2px solid var(--primary-green-dark);
}

.invoice-footer {
    margin-top: 50px;
}

.invoice-footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-top: 30px;
    gap: 40px;
}

.footer-left {
    flex: 1;
}

.invoice-terms {
    background: var(--light-gray);
    padding: 20px;
    border-radius: 0;
    margin-bottom: 25px;
    color: var(--text-primary);
    font-size: 13px;
    line-height: 1.8;
    border-left: 4px solid var(--primary-green);
}

.invoice-payment-info {
    flex: 1;
}

.invoice-payment-info p {
    margin: 8px 0;
    font-size: 14px;
}

.status-text {
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 4px;
}

.status-text.status-paid {
    background: #dcfce7;
    color: #166534;
}

.status-text.status-unpaid {
    background: #fef3c7;
    color: #92400e;
}

.invoice-signature {
    text-align: right;
    flex: 1;
}

.invoice-signature p {
    margin: 5px 0;
    font-size: 14px;
}

.signature-image {
    max-width: 200px;
    max-height: 80px;
    margin: 15px 0 15px auto;
    display: block;
}

.signature-name {
    font-weight: 600;
    margin-top: 10px;
}

.lunas-stamp {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-15deg);
    border: 8px solid rgba(220, 38, 38, 0.5);
    color: rgba(220, 38, 38, 0.5);
    font-family: var(--font-display);
    font-size: 80px;
    font-weight: 700;
    padding: 20px 50px;
    border-radius: 20px;
    pointer-events: none;
    text-transform: uppercase;
    letter-spacing: 8px;
    z-index: 10;
}

/* Loading */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 6px solid var(--light-gray);
    border-top-color: var(--primary-green);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-overlay p {
    margin-top: var(--spacing-md);
    font-size: 1.1rem;
    color: var(--primary-green);
    font-weight: 500;
}

/* Toast */
.toast {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    background: var(--primary-green);
    color: var(--white);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    transform: translateY(200%);
    transition: transform var(--transition-normal);
    z-index: 3000;
}

.toast.show {
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .header-actions {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .item-fields {
        grid-template-columns: 1fr;
    }

    .search-filter {
        flex-direction: column;
    }

    .search-filter input {
        width: 100%;
    }

    .modal-body {
        padding: var(--spacing-sm);
    }

    .invoice-preview {
        width: 100%;
        max-width: 100%;
        padding: 30px 20px;
        font-size: 12px;
        min-height: auto;
    }

    .invoice-preview-header {
        flex-direction: column;
    }

    .invoice-details-header {
        text-align: left;
        margin-top: 20px;
    }

    .invoice-title {
        font-size: 28px;
    }

    .invoice-number {
        font-size: 22px;
    }

    .invoice-parties {
        flex-direction: column;
        gap: 20px;
    }

    .invoice-items-table {
        font-size: 11px;
    }

    .invoice-items-table th,
    .invoice-items-table td {
        padding: 8px 5px;
    }

    .invoice-summary {
        width: 100%;
    }

    .lunas-stamp {
        font-size: 50px;
        padding: 12px 25px;
        border-width: 5px;
        letter-spacing: 5px;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions button {
        width: 100%;
    }

    .modal-content {
        width: 95%;
        max-height: 95vh;
    }

    .modal-footer {
        flex-direction: column;
    }

    .modal-footer button {
        width: 100%;
    }
}

@media print {
    .app-header,
    .form-actions,
    .modal-header,
    .modal-footer {
        display: none !important;
    }

    .invoice-preview {
        border: none;
        box-shadow: none;
        padding: 0;
        margin: 0;
        width: 100%;
        max-width: 100%;
    }

    body {
        background: white;
    }
    
    * {
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }
}

/* =============== BLUE MODERN THEME =============== */
.invoice-preview.theme-blue {
    background: white;
    padding: 0;
    position: relative;
    overflow: hidden;
}

/* Blue header section */
.invoice-preview.theme-blue::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #3b82f6 100%);
    z-index: 0;
}

.invoice-preview.theme-blue .invoice-preview-header {
    position: relative;
    z-index: 1;
    background: transparent;
    padding: 25px 40px;
    margin-bottom: 20px;
}

.invoice-preview.theme-blue .company-info {
    background: white;
    padding: 15px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    max-width: 350px;
}

.invoice-preview.theme-blue .invoice-logo {
    max-width: 80px;
    max-height: 80px;
}

.invoice-preview.theme-blue .company-name {
    color: #1e40af;
    font-size: 16px;
    margin-top: 8px;
}

.invoice-preview.theme-blue .company-address {
    color: #64748b;
    font-size: 12px;
}

.invoice-preview.theme-blue .invoice-details-header {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 12px;
}

.invoice-preview.theme-blue .invoice-title {
    color: white;
    font-size: 48px;
    margin: 0;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.invoice-preview.theme-blue .invoice-number {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 18px;
    font-family: 'Courier New', monospace;
    margin: 0;
    text-align: center;
    min-width: 180px;
    letter-spacing: 1px;
}

.invoice-preview.theme-blue .invoice-date {
    color: white;
    margin: 0;
    text-align: right;
    font-size: 13px;
}

.invoice-preview.theme-blue .invoice-parties {
    position: relative;
    z-index: 1;
    background: white;
    padding: 25px 40px;
    margin: 0 0 25px 0;
    display: flex;
    flex-direction: row-reverse;
}

.invoice-preview.theme-blue .invoice-parties .party-section:first-child {
    order: 2;
}

.invoice-preview.theme-blue .invoice-parties .party-section:last-child {
    order: 1;
}

.invoice-preview.theme-blue .party-title {
    color: #1e40af;
    font-size: 15px;
    border-bottom: 3px solid #3b82f6;
    padding-bottom: 6px;
    margin-bottom: 12px;
}

.invoice-preview.theme-blue .party-name {
    color: #0f172a;
    font-weight: 700;
}

.invoice-preview.theme-blue .party-address,
.invoice-preview.theme-blue .party-contact {
    color: #64748b;
}

.invoice-preview.theme-blue .invoice-items-table {
    margin: 0 40px 25px 40px;
    width: calc(100% - 80px);
    position: relative;
    z-index: 1;
}

.invoice-preview.theme-blue .invoice-items-table thead {
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
}

.invoice-preview.theme-blue .invoice-items-table th {
    border-color: #1e3a8a;
    color: white;
    font-weight: 600;
}

.invoice-preview.theme-blue .invoice-items-table td {
    border-color: #cbd5e1;
}

.invoice-preview.theme-blue .invoice-items-table tbody tr:hover {
    background: #eff6ff;
}

.invoice-preview.theme-blue .invoice-summary {
    margin: 0 40px 25px auto;
    border: 2px solid #3b82f6;
    position: relative;
    z-index: 1;
    background: white;
}

.invoice-preview.theme-blue .summary-row {
    border-bottom-color: #e2e8f0;
}

.invoice-preview.theme-blue .summary-row.total {
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    color: white;
}

.invoice-preview.theme-blue .invoice-footer {
    padding: 0 40px 40px 40px;
    position: relative;
    z-index: 1;
}

.invoice-preview.theme-blue .invoice-footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
}

.invoice-preview.theme-blue .invoice-terms {
    background: #eff6ff;
    border-left: 4px solid #3b82f6;
    color: #1e293b;
}

.invoice-preview.theme-blue .invoice-payment-info {
    color: #334155;
    flex: 1;
}

.invoice-preview.theme-blue .status-text.status-paid {
    background: #dcfce7;
    color: #166534;
}

.invoice-preview.theme-blue .status-text.status-unpaid {
    background: #fef3c7;
    color: #92400e;
}

.invoice-preview.theme-blue .invoice-signature {
    color: #334155;
    text-align: right;
    flex: 1;
}

.invoice-preview.theme-blue .signature-name {
    color: #1e40af;
    font-weight: 700;
}

.invoice-preview.theme-blue .invoice-number {
    font-family: 'Courier New', monospace;
}

.invoice-preview.theme-blue .lunas-stamp {
    border-color: rgba(220, 38, 38, 0.5);
    color: rgba(220, 38, 38, 0.5);
    z-index: 10;
}