/* ============================================================
   SRG Simple Invoice Generator Component (Dark Mode & Dynamic Accent)
   ============================================================ */

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

/* Outer Card Wrapper */
.sig-wrap {
    width: 100%;
    background: var(--srg-bg-primary);
    border: 1px solid var(--srg-border-primary);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--srg-shadow-lg);
    margin: 32px 0;
    font-family: var(--srg-font-body);
    transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Tool Header */
.sig-header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 22px 28px;
    background: linear-gradient(135deg, var(--srg-bg-secondary) 0%, rgba(var(--srg-context-accent-rgb, 124, 58, 237), 0.05) 100%);
    border-bottom: 1px solid var(--srg-border-primary);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.sig-header-icon {
    width: 46px; 
    height: 46px;
    background: var(--srg-bg-primary);
    border: 1px solid rgba(var(--srg-context-accent-rgb, 124, 58, 237), 0.15);
    border-radius: 12px;
    display: flex; 
    align-items: center; 
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 2px 4px rgba(var(--srg-context-accent-rgb, 124, 58, 237), 0.08);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.sig-header-icon svg { 
    width: 22px; 
    height: 22px; 
    stroke: var(--srg-context-accent, #7C3AED);
}

.sig-header-text .srg-tool-title {
    margin: 0 0 3px 0 !important;
    font-size: 17px !important; 
    font-weight: 800 !important;
    color: var(--srg-text-primary) !important; 
    line-height: 1.2;
}

.sig-header-text p {
    margin: 0 !important; 
    font-size: 13px !important;
    color: var(--srg-text-secondary) !important; 
    line-height: 1.4;
}

/* Form Body */
.sig-form-body { 
    padding: 28px; 
}

/* Section labels */
.sig-section-label {
    display: flex; 
    align-items: center; 
    gap: 7px;
    font-size: 11px; 
    font-weight: 800;
    text-transform: uppercase; 
    letter-spacing: 1px;
    color: var(--srg-text-tertiary); 
    margin-bottom: 14px; 
    margin-top: 24px;
}

.sig-section-label:first-child { 
    margin-top: 0; 
}

.sig-section-label svg { 
    width: 13px; 
    height: 13px; 
    flex-shrink: 0; 
    stroke: currentColor;
}

.sig-section-label::after {
    content: "";
    flex: 1; 
    height: 1px; 
    background: var(--srg-border-primary);
    margin-left: 10px;
    transition: background-color 0.3s ease;
}

/* Two Column Grid */
.sig-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 4px;
}

/* Field group spacing */
.sig-field { 
    margin-bottom: 14px; 
}

.sig-field:last-child { 
    margin-bottom: 0; 
}

.sig-field label {
    display: block;
    font-size: 12px; 
    font-weight: 700;
    color: var(--srg-text-secondary); 
    margin-bottom: 6px;
}

/* Inputs & Textareas */
.sig-input,
.sig-textarea {
    width: 100%;
    padding: 11px 14px;
    font-size: 14px;
    color: var(--srg-text-primary);
    background: var(--srg-bg-secondary);
    border: 2px solid var(--srg-border-primary);
    border-radius: 10px;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, color 0.2s ease;
    font-family: inherit;
}

.sig-textarea {
    resize: vertical;
    min-height: 80px;
    line-height: 1.6;
}

.sig-input::placeholder,
.sig-textarea::placeholder { 
    color: var(--srg-text-tertiary); 
}

.sig-input:focus,
.sig-textarea:focus {
    border-color: var(--srg-context-accent, #7C3AED);
    background: var(--srg-bg-primary);
    box-shadow: 0 0 0 3px rgba(var(--srg-context-accent-rgb, 124, 58, 237), 0.12);
}

input[type="date"].sig-input { 
    cursor: pointer; 
}

/* Metadata fields grid */
.sig-meta-grid {
    grid-template-columns: 1fr 1fr;
    margin-top: 20px;
}

/* Invoice Line Items Section */
.sig-items-section { 
    margin-top: 24px; 
}

.sig-line-item-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    padding: 12px 14px;
    background: var(--srg-bg-secondary);
    border: 1px solid var(--srg-border-primary);
    border-radius: 10px;
    transition: border-color 0.2s ease, background-color 0.3s ease;
}

.sig-line-item-row:hover { 
    border-color: var(--srg-text-tertiary); 
}

.sig-item-desc {
    flex: 1;
    padding: 9px 12px;
    font-size: 14px; 
    color: var(--srg-text-primary);
    background: var(--srg-bg-primary); 
    border: 2px solid var(--srg-border-primary);
    border-radius: 8px; 
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.3s ease;
    font-family: inherit;
}

.sig-item-desc::placeholder { 
    color: var(--srg-text-tertiary); 
}

.sig-item-desc:focus {
    border-color: var(--srg-context-accent, #7C3AED);
    box-shadow: 0 0 0 3px rgba(var(--srg-context-accent-rgb, 124, 58, 237), 0.12);
}

.sig-item-price {
    width: 120px; 
    flex-shrink: 0;
    padding: 9px 12px;
    font-size: 14px; 
    font-weight: 700; 
    color: var(--srg-text-primary);
    background: var(--srg-bg-primary); 
    border: 2px solid var(--srg-border-primary);
    border-radius: 8px; 
    outline: none; 
    text-align: right;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.3s ease;
    font-family: inherit;
    -moz-appearance: textfield;
}

.sig-item-price::-webkit-outer-spin-button,
.sig-item-price::-webkit-inner-spin-button { 
    -webkit-appearance: none; 
}

.sig-item-price::placeholder { 
    color: var(--srg-text-tertiary); 
    font-weight: 400; 
}

.sig-item-price:focus {
    border-color: var(--srg-context-accent, #7C3AED);
    box-shadow: 0 0 0 3px rgba(var(--srg-context-accent-rgb, 124, 58, 237), 0.12);
}

/* Remove item button */
.sig-remove-btn {
    width: 32px; 
    height: 32px; 
    flex-shrink: 0;
    display: flex; 
    align-items: center; 
    justify-content: center;
    background: transparent; 
    border: 2px solid var(--srg-border-primary);
    border-radius: 8px; 
    cursor: pointer; 
    color: var(--srg-text-tertiary);
    font-size: 18px; 
    line-height: 1;
    transition: all 0.2s ease;
}

.sig-remove-btn:hover {
    background: rgba(239, 68, 68, 0.08); 
    border-color: rgba(239, 68, 68, 0.25); 
    color: var(--srg-error, #DC2626);
}

/* Add Item Button */
.sig-add-btn {
    display: inline-flex; 
    align-items: center; 
    gap: 7px;
    padding: 9px 16px; 
    margin-top: 4px;
    font-size: 13px; 
    font-weight: 700;
    color: var(--srg-context-accent, #7C3AED) !important;
    background: var(--srg-brand-50, #F5F3FF); 
    border: 2px solid var(--srg-brand-200, #DDD6FE);
    border-radius: 8px; 
    cursor: pointer;
    transition: all 0.2s ease;
}

.sig-add-btn:hover {
    background: var(--srg-context-accent, #7C3AED); 
    color: #ffffff !important;
    border-color: var(--srg-context-accent, #7C3AED);
}

.sig-add-btn svg { 
    width: 14px; 
    height: 14px; 
    stroke: currentColor;
}

/* Action Submit / Generate Button */
.sig-generate-btn {
    display: flex; 
    align-items: center; 
    justify-content: center; 
    gap: 8px;
    width: 100%; 
    margin-top: 24px;
    padding: 14px 24px;
    font-size: 15px; 
    font-weight: 700;
    color: #ffffff !important;
    background: var(--srg-context-accent, #7C3AED); 
    border: 2px solid var(--srg-context-accent, #7C3AED);
    border-radius: 10px; 
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 6px -1px rgba(var(--srg-context-accent-rgb, 124, 58, 237), 0.25);
}

.sig-generate-btn:hover {
    background: var(--srg-context-accent-hover, #6D28D9); 
    border-color: var(--srg-context-accent-hover, #6D28D9);
    transform: translateY(-1px);
    box-shadow: 0 6px 10px -1px rgba(var(--srg-context-accent-rgb, 124, 58, 237), 0.3);
}

.sig-generate-btn svg { 
    width: 16px; 
    height: 16px; 
    flex-shrink: 0; 
    stroke: currentColor;
}

/* ============================================================
   INVOICE PRINT / PREVIEW PAPER VIEW
   ============================================================ */
.sig-invoice-wrap { 
    margin: 32px 0; 
}

/* Action bar above preview paper */
.sig-top-actions {
    display: flex; 
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px; 
    flex-wrap: wrap; 
    gap: 10px;
}

.sig-back-btn {
    display: inline-flex; 
    align-items: center; 
    gap: 6px;
    padding: 10px 18px;
    font-size: 14px; 
    font-weight: 700;
    color: var(--srg-text-secondary) !important;
    background: var(--srg-bg-primary); 
    border: 2px solid var(--srg-border-primary);
    border-radius: 8px; 
    cursor: pointer;
    transition: all 0.2s ease;
}

.sig-back-btn:hover {
    background: var(--srg-bg-secondary); 
    border-color: var(--srg-text-tertiary); 
    color: var(--srg-text-primary) !important;
}

.sig-back-btn svg { 
    width: 15px; 
    height: 15px; 
    stroke: currentColor;
}

.sig-print-btn {
    display: inline-flex; 
    align-items: center; 
    gap: 8px;
    padding: 10px 22px;
    font-size: 14px; 
    font-weight: 700;
    color: #ffffff !important;
    background: var(--srg-success, #16A34A); 
    border: 2px solid var(--srg-success, #16A34A);
    border-radius: 8px; 
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 6px -1px rgba(16, 185, 129, 0.25);
}

.sig-print-btn:hover {
    background: var(--srg-accent-600, #059669); 
    border-color: var(--srg-accent-600, #059669);
    transform: translateY(-1px);
    box-shadow: 0 6px 10px -1px rgba(16, 185, 129, 0.3);
}

.sig-print-btn svg { 
    width: 15px; 
    height: 15px; 
    stroke: currentColor;
}

/* Preview Invoice Paper sheet */
.sig-invoice-paper {
    background: var(--srg-bg-primary);
    border: 1px solid var(--srg-border-primary);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--srg-shadow-lg);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* Invoice Header band */
.sig-inv-header {
    background: linear-gradient(135deg, var(--srg-neutral-900) 0%, rgba(var(--srg-context-accent-rgb, 124, 58, 237), 0.9) 100%);
    padding: 32px 36px;
    display: flex; 
    align-items: flex-start;
    justify-content: space-between; 
    gap: 20px; 
    flex-wrap: wrap;
}

.sig-inv-title {
    font-size: 36px; 
    font-weight: 900;
    color: #ffffff; 
    letter-spacing: 3px;
    margin: 0;
}

.sig-inv-meta { 
    text-align: right; 
}

.sig-inv-meta p {
    margin: 0 0 4px 0;
    font-size: 13px; 
    color: rgba(255, 255, 255, 0.85);
}

.sig-inv-meta p strong { 
    color: #ffffff; 
    font-weight: 700; 
}

/* Bill to / From details blocks */
.sig-inv-parties {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border-bottom: 1px solid var(--srg-border-primary);
    transition: border-color 0.3s ease;
}

.sig-party {
    padding: 24px 36px;
}

.sig-party:first-child {
    border-right: 1px solid var(--srg-border-primary);
}

.sig-party-label {
    font-size: 10px; 
    font-weight: 800;
    text-transform: uppercase; 
    letter-spacing: 1.2px;
    color: var(--srg-text-tertiary); 
    margin-bottom: 8px;
    display: flex; 
    align-items: center; 
    gap: 5px;
}

.sig-party-label svg { 
    width: 11px; 
    height: 11px; 
    stroke: currentColor;
}

.sig-party-name {
    font-size: 16px; 
    font-weight: 800; 
    color: var(--srg-text-primary);
    margin-bottom: 4px;
}

.sig-party-contact {
    font-size: 13px; 
    color: var(--srg-text-secondary);
    line-height: 1.6; 
    white-space: pre-line;
}

/* Items Preview Table */
.sig-inv-table-wrap { 
    padding: 0 36px 28px; 
}

.sig-inv-table {
    width: 100%; 
    border-collapse: collapse; 
    margin-top: 24px;
}

.sig-inv-table thead tr {
    background: var(--srg-bg-secondary);
    border-bottom: 2px solid var(--srg-border-primary);
}

.sig-inv-table thead th {
    padding: 12px 16px;
    font-size: 11px; 
    font-weight: 800;
    text-transform: uppercase; 
    letter-spacing: 0.8px;
    color: var(--srg-text-secondary); 
    text-align: left;
}

.sig-inv-table thead th:last-child { 
    text-align: right; 
}

.sig-inv-table tbody tr {
    border-bottom: 1px solid var(--srg-border-primary);
    transition: background-color 0.15s ease;
}

.sig-inv-table tbody tr:hover { 
    background: var(--srg-bg-secondary); 
}

.sig-inv-table tbody td {
    padding: 14px 16px;
    font-size: 14px; 
    color: var(--srg-text-primary);
}

.sig-inv-table tbody td:last-child {
    text-align: right; 
    font-weight: 700; 
    color: var(--srg-text-primary);
}

/* Final Summary Box */
.sig-inv-total-row {
    display: flex; 
    justify-content: flex-end;
    margin-top: 16px;
}

.sig-inv-total-box {
    background: rgba(16, 185, 129, 0.08);
    border: 2px solid rgba(16, 185, 129, 0.25);
    border-radius: 12px;
    padding: 16px 24px;
    display: flex; 
    align-items: center; 
    gap: 16px; 
    flex-wrap: wrap;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.sig-inv-total-label {
    font-size: 13px; 
    font-weight: 700;
    text-transform: uppercase; 
    letter-spacing: 0.8px; 
    color: var(--srg-success, #16A34A);
}

.sig-inv-total-amount {
    font-size: 28px; 
    font-weight: 900; 
    color: var(--srg-text-primary);
}

/* Footer note strip */
.sig-inv-footer {
    padding: 16px 36px;
    border-top: 1px dashed var(--srg-border-primary);
    text-align: center;
    font-size: 12px; 
    color: var(--srg-text-tertiary);
    transition: border-color 0.3s ease;
}

/* Dark mode overrides */
html.srg-dark .sig-line-item-row:hover {
    border-color: var(--srg-border-focus);
}

/* Print Settings overrides */
@media print {
    .sig-top-actions { display: none !important; }
    .sig-invoice-wrap { margin: 0 !important; }
    .sig-invoice-paper {
        border: none !important; 
        border-radius: 0 !important;
        box-shadow: none !important;
    }
}

/* Responsive adjustment */
@media (max-width: 640px) {
    .sig-grid { grid-template-columns: 1fr; }
    .sig-meta-grid { grid-template-columns: 1fr 1fr; }
    .sig-form-body { padding: 20px; }
    .sig-inv-header { padding: 24px 20px; }
    .sig-inv-parties { grid-template-columns: 1fr; }
    .sig-party:first-child { border-right: none; border-bottom: 1px solid var(--srg-border-primary); }
    .sig-party { padding: 18px 20px; }
    .sig-inv-table-wrap { padding: 0 20px 20px; }
    .sig-item-price { width: 90px; }
}