/* ===================================================
   Free Seller Invoice Generator – sig-main.css
   Version: 1.0.0
   =================================================== */

:root {
    --sig-brand:       #2563EB;
    --sig-brand-dark:  #1D4ED8;
    --sig-brand-light: #EFF6FF;
    --sig-accent:      #10B981;
    --sig-danger:      #EF4444;
    --sig-gray-50:     #F9FAFB;
    --sig-gray-100:    #F3F4F6;
    --sig-gray-200:    #E5E7EB;
    --sig-gray-300:    #D1D5DB;
    --sig-gray-400:    #9CA3AF;
    --sig-gray-500:    #6B7280;
    --sig-gray-600:    #4B5563;
    --sig-gray-700:    #374151;
    --sig-gray-800:    #1F2937;
    --sig-gray-900:    #111827;
    --sig-white:       #FFFFFF;
    --sig-radius:      12px;
    --sig-radius-sm:   8px;
    --sig-shadow:      0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);
    --sig-shadow-md:   0 4px 24px rgba(0,0,0,.10);
    --sig-font:        'Segoe UI', system-ui, -apple-system, sans-serif;
    --sig-font-mono:   'Courier New', monospace;
    --sig-transition:  0.2s ease;
}

/* ---- Reset ---- */
#sig-wrap *, #sig-wrap *::before, #sig-wrap *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

#sig-wrap {
    font-family: var(--sig-font);
    font-size: 15px;
    color: var(--sig-gray-800);
    line-height: 1.6;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px 48px;
}

/* ===== INTRO ===== */
.sig-intro {
    background: linear-gradient(135deg, #EFF6FF 0%, #F0FDF4 100%);
    border: 1px solid var(--sig-gray-200);
    border-radius: var(--sig-radius);
    padding: 40px 36px;
    margin-bottom: 28px;
    position: relative;
    overflow: hidden;
}
.sig-intro::before {
    content: '';
    position: absolute;
    top: -60px; right: -60px;
    width: 200px; height: 200px;
    background: radial-gradient(circle, rgba(37,99,235,.08) 0%, transparent 70%);
    border-radius: 50%;
}
.sig-h1 {
    font-size: clamp(1.35rem, 3vw, 1.9rem);
    font-weight: 700;
    color: var(--sig-gray-900);
    line-height: 1.3;
    margin-bottom: 12px;
}
.sig-intro-text {
    color: var(--sig-gray-600);
    max-width: 700px;
    margin-bottom: 20px;
    font-size: 15px;
}
.sig-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.sig-badge {
    background: var(--sig-white);
    border: 1px solid var(--sig-gray-200);
    color: var(--sig-gray-700);
    font-size: 12.5px;
    font-weight: 600;
    padding: 5px 12px;
    border-radius: 100px;
    white-space: nowrap;
}

/* ===== SECTION TITLES ===== */
.sig-section { margin-bottom: 32px; }
.sig-section-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--sig-gray-900);
    margin-bottom: 4px;
}
.sig-section-sub {
    color: var(--sig-gray-500);
    font-size: 13.5px;
    margin-bottom: 16px;
}

/* ===== TEMPLATE GRID ===== */
.sig-templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 12px;
}
.sig-tpl-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    background: var(--sig-white);
    border: 2px solid var(--sig-gray-200);
    border-radius: var(--sig-radius-sm);
    padding: 10px 8px;
    cursor: pointer;
    transition: border-color var(--sig-transition), box-shadow var(--sig-transition), transform var(--sig-transition);
    font-size: 12px;
    font-weight: 600;
    color: var(--sig-gray-600);
    font-family: var(--sig-font);
    text-align: center;
}
.sig-tpl-btn:hover {
    border-color: var(--sig-brand);
    transform: translateY(-2px);
    box-shadow: var(--sig-shadow);
}
.sig-tpl-btn.active {
    border-color: var(--sig-brand);
    background: var(--sig-brand-light);
    color: var(--sig-brand-dark);
    box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}
.sig-tpl-preview {
    width: 70px;
    height: 52px;
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}
.sig-tpl-preview .tpl-prev-header {
    height: 14px;
    width: 100%;
}
.sig-tpl-preview .tpl-prev-lines {
    padding: 4px 6px;
    display: flex;
    flex-direction: column;
    gap: 3px;
}
.sig-tpl-preview .tpl-prev-lines span {
    display: block;
    height: 3px;
    border-radius: 2px;
    background: rgba(0,0,0,.12);
}
.sig-tpl-preview .tpl-prev-lines span:nth-child(2) { width: 70%; }
.sig-tpl-preview .tpl-prev-lines span:nth-child(3) { width: 50%; }

/* Template preview colors */
.tpl-modern-minimal { background: #fff; border: 1px solid #e5e7eb; }
.tpl-modern-minimal .tpl-prev-header { background: #2563EB; }
.tpl-ecommerce { background: #fff7ed; border: 1px solid #fed7aa; }
.tpl-ecommerce .tpl-prev-header { background: #ea580c; }
.tpl-gst { background: #f0fdf4; border: 1px solid #bbf7d0; }
.tpl-gst .tpl-prev-header { background: #16a34a; }
.tpl-clean { background: #fafafa; border: 1px solid #e5e7eb; }
.tpl-clean .tpl-prev-header { background: #374151; }
.tpl-whatsapp { background: #f0fdf4; border: 1px solid #86efac; }
.tpl-whatsapp .tpl-prev-header { background: #25D366; }
.tpl-luxury { background: #0f172a; border: 1px solid #334155; }
.tpl-luxury .tpl-prev-header { background: #c9a227; }
.tpl-luxury .tpl-prev-lines span { background: rgba(255,255,255,.2); }
.tpl-blue { background: #eff6ff; border: 1px solid #bfdbfe; }
.tpl-blue .tpl-prev-header { background: #1e40af; }
.tpl-startup { background: #fdf4ff; border: 1px solid #e9d5ff; }
.tpl-startup .tpl-prev-header { background: #7c3aed; }
.tpl-simple { background: #fff; border: 1px solid #d1d5db; }
.tpl-simple .tpl-prev-header { background: #6b7280; }
.tpl-intl { background: #fff; border: 1px solid #e0e7ff; }
.tpl-intl .tpl-prev-header { background: #4f46e5; }

/* ===== MAIN TOOL LAYOUT ===== */
.sig-tool-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: start;
}
@media (max-width: 1024px) {
    .sig-tool-layout { grid-template-columns: 1fr; }
}

/* ===== CARDS ===== */
.sig-card {
    background: var(--sig-white);
    border: 1px solid var(--sig-gray-200);
    border-radius: var(--sig-radius);
    box-shadow: var(--sig-shadow);
    margin-bottom: 16px;
    overflow: hidden;
    transition: box-shadow var(--sig-transition);
}
.sig-card:hover { box-shadow: var(--sig-shadow-md); }
.sig-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    cursor: pointer;
    user-select: none;
    background: var(--sig-gray-50);
    border-bottom: 1px solid var(--sig-gray-100);
    transition: background var(--sig-transition);
}
.sig-card-header:hover { background: var(--sig-gray-100); }
.sig-card-header h3 {
    font-size: 14px;
    font-weight: 700;
    color: var(--sig-gray-800);
}
.sig-toggle-icon {
    font-size: 16px;
    color: var(--sig-gray-400);
    transition: transform var(--sig-transition);
}
.sig-toggle-icon.rotated { transform: rotate(-90deg); }
.sig-card-body {
    padding: 20px;
}
.sig-card-body.collapsed { display: none; }

/* ===== GRIDS ===== */
.sig-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}
.sig-grid-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 12px;
}
.sig-full { grid-column: 1 / -1 !important; }
@media (max-width: 600px) {
    .sig-grid-2, .sig-grid-3 { grid-template-columns: 1fr; }
}

/* ===== FORM FIELDS ===== */
.sig-field-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.sig-field-group label {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--sig-gray-600);
    letter-spacing: 0.01em;
}
.sig-field-group input[type="text"],
.sig-field-group input[type="email"],
.sig-field-group input[type="tel"],
.sig-field-group input[type="url"],
.sig-field-group input[type="number"],
.sig-field-group input[type="date"],
.sig-field-group select,
.sig-field-group textarea {
    width: 100%;
    padding: 9px 12px;
    border: 1.5px solid var(--sig-gray-200);
    border-radius: var(--sig-radius-sm);
    font-size: 14px;
    font-family: var(--sig-font);
    color: var(--sig-gray-800);
    background: var(--sig-white);
    transition: border-color var(--sig-transition), box-shadow var(--sig-transition);
    outline: none;
}
.sig-field-group input:focus,
.sig-field-group select:focus,
.sig-field-group textarea:focus {
    border-color: var(--sig-brand);
    box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
.sig-field-group textarea { resize: vertical; min-height: 64px; }

/* ===== LOGO UPLOAD ===== */
.sig-branding-row {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 20px;
    align-items: start;
}
@media (max-width: 600px) {
    .sig-branding-row { grid-template-columns: 1fr; }
}
.sig-logo-area { display: flex; flex-direction: column; gap: 8px; align-items: center; }
.sig-logo-label {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 140px;
    height: 100px;
    border: 2px dashed var(--sig-gray-300);
    border-radius: var(--sig-radius-sm);
    cursor: pointer;
    background: var(--sig-gray-50);
    transition: border-color var(--sig-transition), background var(--sig-transition);
    overflow: hidden;
}
.sig-logo-label:hover { border-color: var(--sig-brand); background: var(--sig-brand-light); }
.sig-logo-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: var(--sig-gray-400);
    font-size: 12px;
    font-weight: 500;
}
.sig-logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.sig-file-input { display: none; }
.sig-file-input-small {
    width: 100%;
    font-size: 12.5px;
    color: var(--sig-gray-500);
    cursor: pointer;
}
.sig-sig-preview {
    max-height: 50px;
    max-width: 150px;
    object-fit: contain;
    border: 1px solid var(--sig-gray-200);
    border-radius: 4px;
}

/* ===== COLOR PICKER ===== */
.sig-color-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
}
.sig-color-wrap input[type="color"] {
    width: 40px;
    height: 36px;
    padding: 2px;
    border: 1.5px solid var(--sig-gray-200);
    border-radius: 6px;
    cursor: pointer;
    background: none;
}
#sig-color-hex {
    font-family: var(--sig-font-mono);
    font-size: 13px;
    color: var(--sig-gray-600);
}

/* ===== GST TOGGLE ===== */
.sig-gst-toggle-wrap { margin: 14px 0 8px; }
.sig-toggle-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
}
.sig-toggle-label input[type="checkbox"] { display: none; }
.sig-toggle-slider {
    position: relative;
    width: 42px;
    height: 24px;
    background: var(--sig-gray-300);
    border-radius: 100px;
    transition: background var(--sig-transition);
    flex-shrink: 0;
}
.sig-toggle-slider::after {
    content: '';
    position: absolute;
    top: 3px; left: 3px;
    width: 18px; height: 18px;
    background: white;
    border-radius: 50%;
    transition: transform var(--sig-transition);
    box-shadow: 0 1px 4px rgba(0,0,0,.2);
}
.sig-toggle-label input:checked + .sig-toggle-slider {
    background: var(--sig-brand);
}
.sig-toggle-label input:checked + .sig-toggle-slider::after {
    transform: translateX(18px);
}
.sig-toggle-text {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--sig-gray-700);
}
.sig-gst-options {
    background: var(--sig-brand-light);
    border: 1px solid #BFDBFE;
    border-radius: var(--sig-radius-sm);
    padding: 14px;
    margin-top: 10px;
}

/* ===== INPUT WITH BUTTON ===== */
.sig-input-with-btn {
    display: flex;
    gap: 6px;
}
.sig-input-with-btn input { flex: 1; }
.sig-auto-btn {
    padding: 8px 12px;
    background: var(--sig-gray-100);
    border: 1.5px solid var(--sig-gray-200);
    border-radius: var(--sig-radius-sm);
    cursor: pointer;
    font-size: 16px;
    color: var(--sig-gray-600);
    transition: background var(--sig-transition), color var(--sig-transition);
    white-space: nowrap;
}
.sig-auto-btn:hover {
    background: var(--sig-brand);
    color: white;
    border-color: var(--sig-brand);
}

/* ===== ITEMS TABLE ===== */
.sig-items-table-wrap { overflow-x: auto; margin-bottom: 12px; }
.sig-items-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    min-width: 620px;
}
.sig-items-table th {
    background: var(--sig-gray-50);
    color: var(--sig-gray-500);
    font-size: 11.5px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 8px 10px;
    text-align: left;
    border-bottom: 2px solid var(--sig-gray-200);
}
.sig-items-table td {
    padding: 6px 5px;
    border-bottom: 1px solid var(--sig-gray-100);
    vertical-align: middle;
}
.sig-items-table input {
    width: 100%;
    padding: 7px 8px;
    border: 1.5px solid transparent;
    border-radius: 6px;
    font-size: 13px;
    font-family: var(--sig-font);
    color: var(--sig-gray-800);
    background: var(--sig-gray-50);
    transition: border-color var(--sig-transition), background var(--sig-transition);
    outline: none;
}
.sig-items-table input:focus {
    border-color: var(--sig-brand);
    background: white;
}
.sig-item-total {
    font-weight: 700;
    color: var(--sig-gray-800);
    text-align: right;
    white-space: nowrap;
    padding-right: 8px;
}
.sig-item-del {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--sig-gray-300);
    font-size: 18px;
    line-height: 1;
    padding: 4px;
    border-radius: 4px;
    transition: color var(--sig-transition);
}
.sig-item-del:hover { color: var(--sig-danger); }

/* ===== ITEMS ACTIONS ===== */
.sig-items-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.sig-btn-add-item {
    padding: 9px 18px;
    background: var(--sig-brand-light);
    border: 1.5px dashed var(--sig-brand);
    border-radius: var(--sig-radius-sm);
    color: var(--sig-brand);
    font-size: 13.5px;
    font-weight: 700;
    cursor: pointer;
    transition: background var(--sig-transition), border-style var(--sig-transition);
    font-family: var(--sig-font);
}
.sig-btn-add-item:hover {
    background: var(--sig-brand);
    color: white;
    border-style: solid;
}
.sig-btn-link {
    background: none;
    border: none;
    color: var(--sig-brand);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    font-family: var(--sig-font);
    text-decoration: underline;
    padding: 0;
}
.sig-btn-link:hover { color: var(--sig-brand-dark); }

/* ===== TOTALS ===== */
.sig-totals-wrap {
    display: flex;
    justify-content: flex-end;
}
.sig-totals-inner {
    width: 100%;
    max-width: 340px;
    border: 1px solid var(--sig-gray-200);
    border-radius: var(--sig-radius-sm);
    overflow: hidden;
}
.sig-total-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 9px 16px;
    border-bottom: 1px solid var(--sig-gray-100);
    font-size: 13.5px;
    color: var(--sig-gray-700);
}
.sig-total-row:last-child { border-bottom: none; }
.sig-total-row--grand {
    background: var(--sig-gray-800);
    color: white;
    font-size: 15px;
    font-weight: 700;
}
.sig-roundoff-row { background: var(--sig-gray-50); }
.sig-check-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    cursor: pointer;
}
.sig-inline-input input {
    width: 80px;
    padding: 5px 8px;
    border: 1.5px solid var(--sig-gray-200);
    border-radius: 6px;
    font-size: 13px;
    font-family: var(--sig-font);
    text-align: right;
    outline: none;
}
.sig-inline-input input:focus { border-color: var(--sig-brand); }

/* ===== ACTION BAR ===== */
.sig-action-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 8px;
    padding: 16px;
    background: var(--sig-white);
    border: 1px solid var(--sig-gray-200);
    border-radius: var(--sig-radius);
    box-shadow: var(--sig-shadow);
    position: sticky;
    bottom: 16px;
    z-index: 10;
}

/* ===== BUTTONS ===== */
.sig-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 10px 20px;
    border-radius: var(--sig-radius-sm);
    font-size: 14px;
    font-weight: 700;
    font-family: var(--sig-font);
    cursor: pointer;
    border: 2px solid transparent;
    transition: background var(--sig-transition), color var(--sig-transition), border-color var(--sig-transition), transform var(--sig-transition), box-shadow var(--sig-transition);
    white-space: nowrap;
    text-decoration: none;
}
.sig-btn:hover { transform: translateY(-1px); }
.sig-btn:active { transform: none; }
.sig-btn--primary {
    background: var(--sig-brand);
    color: white;
    border-color: var(--sig-brand);
    box-shadow: 0 2px 8px rgba(37,99,235,.35);
}
.sig-btn--primary:hover {
    background: var(--sig-brand-dark);
    border-color: var(--sig-brand-dark);
    box-shadow: 0 4px 16px rgba(37,99,235,.45);
}
.sig-btn--secondary {
    background: var(--sig-gray-800);
    color: white;
    border-color: var(--sig-gray-800);
}
.sig-btn--secondary:hover { background: var(--sig-gray-900); border-color: var(--sig-gray-900); }
.sig-btn--ghost {
    background: transparent;
    color: var(--sig-gray-700);
    border-color: var(--sig-gray-300);
}
.sig-btn--ghost:hover {
    background: var(--sig-gray-100);
    border-color: var(--sig-gray-400);
}
.sig-btn--xs {
    padding: 6px 12px;
    font-size: 12.5px;
    font-weight: 700;
}

/* ===== PREVIEW PANEL ===== */
.sig-preview-panel {
    position: sticky;
    top: 24px;
    background: var(--sig-gray-100);
    border: 1px solid var(--sig-gray-200);
    border-radius: var(--sig-radius);
    overflow: hidden;
}
.sig-preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--sig-white);
    border-bottom: 1px solid var(--sig-gray-200);
}
.sig-preview-label {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--sig-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.sig-invoice-preview {
    padding: 20px;
    overflow-y: auto;
    max-height: 85vh;
    background: var(--sig-gray-100);
}
/* The rendered invoice paper */
.sig-inv-paper {
    background: white;
    width: 100%;
    max-width: 794px;
    margin: 0 auto;
    box-shadow: 0 4px 32px rgba(0,0,0,.12);
    border-radius: 4px;
    overflow: hidden;
    font-size: 13px;
}

/* ===== INVOICE PAPER STYLES ===== */
/* -- Modern Minimal -- */
.sig-inv-paper.tpl-modern-minimal .inv-header {
    background: #2563EB;
    color: white;
    padding: 32px 36px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
}
.sig-inv-paper.tpl-modern-minimal .inv-header-left h2 { font-size: 22px; font-weight: 800; }
.sig-inv-paper.tpl-modern-minimal .inv-header-left p { opacity: 0.8; font-size: 13px; margin-top: 4px; }
.sig-inv-paper.tpl-modern-minimal .inv-header-right {
    text-align: right;
}
.sig-inv-paper.tpl-modern-minimal .inv-header-right .inv-num {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.02em;
}
.sig-inv-paper.tpl-modern-minimal .inv-header-right .inv-title-badge {
    background: rgba(255,255,255,.2);
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
    margin-top: 6px;
    display: inline-block;
}

/* -- GST Invoice -- */
.sig-inv-paper.tpl-gst-invoice .inv-header {
    background: #16a34a;
    color: white;
    padding: 28px 36px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.sig-inv-paper.tpl-gst-invoice .gst-stamp {
    background: rgba(255,255,255,.15);
    border: 2px solid rgba(255,255,255,.4);
    padding: 6px 14px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
}

/* -- Luxury Dark -- */
.sig-inv-paper.tpl-luxury-dark {
    background: #0f172a;
    color: #e2e8f0;
}
.sig-inv-paper.tpl-luxury-dark .inv-header {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    border-bottom: 2px solid #c9a227;
    padding: 32px 36px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}
.sig-inv-paper.tpl-luxury-dark .inv-header h2 { color: #c9a227; font-size: 24px; font-weight: 800; }
.sig-inv-paper.tpl-luxury-dark .inv-divider { background: #c9a227; height: 1px; margin: 0 36px; }
.sig-inv-paper.tpl-luxury-dark .inv-body { padding: 28px 36px; }
.sig-inv-paper.tpl-luxury-dark table th { background: #1e293b; color: #94a3b8; border-bottom-color: #334155; }
.sig-inv-paper.tpl-luxury-dark table td { border-bottom-color: #1e293b; color: #e2e8f0; }
.sig-inv-paper.tpl-luxury-dark .inv-total-row { color: #e2e8f0; border-bottom-color: #1e293b; }
.sig-inv-paper.tpl-luxury-dark .inv-total-row.grand { background: #c9a227; color: #0f172a; }

/* -- Blue Corporate -- */
.sig-inv-paper.tpl-blue-corporate .inv-header {
    background: #1e40af;
    color: white;
    padding: 28px 36px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}
.sig-inv-paper.tpl-blue-corporate .inv-top-bar {
    height: 6px;
    background: linear-gradient(90deg, #1e40af, #06b6d4);
}

/* -- WhatsApp Seller -- */
.sig-inv-paper.tpl-whatsapp-seller .inv-header {
    background: #25D366;
    color: white;
    padding: 24px 32px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}
.sig-inv-paper.tpl-whatsapp-seller .whatsapp-badge {
    background: rgba(255,255,255,.2);
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 700;
}

/* -- Startup Style -- */
.sig-inv-paper.tpl-startup-style .inv-header {
    padding: 36px 36px 0;
    border-bottom: none;
}
.sig-inv-paper.tpl-startup-style .startup-accent {
    width: 48px;
    height: 5px;
    background: #7c3aed;
    border-radius: 3px;
    margin-bottom: 14px;
}
.sig-inv-paper.tpl-startup-style .inv-header h2 {
    font-size: 26px;
    font-weight: 900;
    color: #1f2937;
    letter-spacing: -0.03em;
}

/* Shared Invoice Body */
.inv-body {
    padding: 28px 36px;
}
.inv-parties {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 24px;
}
.inv-party-label {
    font-size: 10.5px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #6b7280;
    margin-bottom: 5px;
}
.inv-party-name {
    font-size: 15px;
    font-weight: 700;
    color: #111827;
    margin-bottom: 4px;
}
.inv-party-detail {
    font-size: 12.5px;
    color: #6b7280;
    line-height: 1.5;
}
.inv-meta-row {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 24px;
    padding: 14px 18px;
    background: #f9fafb;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
}
.inv-meta-item { display: flex; flex-direction: column; gap: 2px; }
.inv-meta-key { font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: #9ca3af; }
.inv-meta-val { font-size: 13.5px; font-weight: 600; color: #1f2937; }

/* Invoice Table */
.inv-table { width: 100%; border-collapse: collapse; margin-bottom: 24px; font-size: 13px; }
.inv-table th {
    background: #f3f4f6;
    color: #6b7280;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 10px 12px;
    text-align: left;
    border-bottom: 2px solid #e5e7eb;
}
.inv-table th:last-child, .inv-table td:last-child { text-align: right; }
.inv-table td { padding: 10px 12px; border-bottom: 1px solid #f3f4f6; vertical-align: middle; }
.inv-table tr:last-child td { border-bottom: none; }
.inv-item-name { font-weight: 600; color: #1f2937; }
.inv-item-sku { font-size: 11px; color: #9ca3af; margin-top: 2px; font-family: monospace; }

/* Totals block */
.inv-totals-block {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 24px;
}
.inv-totals-table { width: 240px; }
.inv-total-row {
    display: flex;
    justify-content: space-between;
    padding: 7px 0;
    font-size: 13px;
    border-bottom: 1px solid #f3f4f6;
    color: #4b5563;
}
.inv-total-row.grand {
    background: #1f2937;
    color: white;
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 700;
    border: none;
    margin-top: 4px;
}

/* Invoice footer */
.inv-footer {
    border-top: 1px solid #e5e7eb;
    padding: 18px 36px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 16px;
}
.inv-notes { font-size: 12px; color: #6b7280; max-width: 50%; }
.inv-signature-area {
    text-align: center;
}
.inv-signature-area img {
    max-height: 60px;
    display: block;
    margin: 0 auto 6px;
}
.inv-signature-line {
    width: 140px;
    height: 1px;
    background: #e5e7eb;
    margin: 0 auto 4px;
}
.inv-signature-label {
    font-size: 11px;
    color: #9ca3af;
    font-weight: 600;
    letter-spacing: 0.04em;
}
.inv-bank-details {
    font-size: 11.5px;
    color: #6b7280;
    margin-top: 12px;
    padding: 10px 12px;
    background: #f9fafb;
    border-radius: 6px;
    border: 1px dashed #e5e7eb;
}
.inv-logo { max-height: 60px; max-width: 160px; object-fit: contain; }
.inv-stamp-wrap { position: relative; }
.inv-stamp { max-height: 70px; max-width: 100px; opacity: 0.85; }

/* ===== TOAST ===== */
.sig-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: #1f2937;
    color: white;
    padding: 12px 24px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    z-index: 9999;
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    white-space: nowrap;
    pointer-events: none;
}
.sig-toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}
.sig-toast.success { background: #16a34a; }
.sig-toast.error { background: var(--sig-danger); }

/* ===== LOADING ===== */
.sig-loading {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
}
.sig-loading-inner {
    background: white;
    padding: 36px 48px;
    border-radius: var(--sig-radius);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    box-shadow: var(--sig-shadow-md);
}
.sig-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--sig-gray-200);
    border-top-color: var(--sig-brand);
    border-radius: 50%;
    animation: sig-spin 0.8s linear infinite;
}
@keyframes sig-spin { to { transform: rotate(360deg); } }

/* ===== CONTENT SECTIONS ===== */
.sig-content-section {
    margin: 40px 0;
    padding: 32px 36px;
    background: var(--sig-white);
    border: 1px solid var(--sig-gray-200);
    border-radius: var(--sig-radius);
    box-shadow: var(--sig-shadow);
}
.sig-content-section h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--sig-gray-900);
    margin-bottom: 14px;
    line-height: 1.3;
}
.sig-content-section p {
    color: var(--sig-gray-600);
    margin-bottom: 12px;
    line-height: 1.7;
}
.sig-steps-list {
    list-style: none;
    counter-reset: step-counter;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.sig-steps-list li {
    counter-increment: step-counter;
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 14px 18px;
    background: var(--sig-gray-50);
    border-radius: var(--sig-radius-sm);
    border: 1px solid var(--sig-gray-200);
    font-size: 14.5px;
    color: var(--sig-gray-700);
    line-height: 1.5;
}
.sig-steps-list li::before {
    content: counter(step-counter);
    min-width: 28px;
    height: 28px;
    background: var(--sig-brand);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    flex-shrink: 0;
}

/* ===== FEATURES GRID ===== */
.sig-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    margin-top: 20px;
}
.sig-feature-card {
    padding: 20px;
    background: var(--sig-gray-50);
    border: 1px solid var(--sig-gray-200);
    border-radius: var(--sig-radius-sm);
    transition: box-shadow var(--sig-transition), transform var(--sig-transition);
}
.sig-feature-card:hover {
    box-shadow: var(--sig-shadow);
    transform: translateY(-2px);
}
.sig-feature-icon {
    font-size: 28px;
    margin-bottom: 10px;
    line-height: 1;
}
.sig-feature-card h3 {
    font-size: 14px;
    font-weight: 700;
    color: var(--sig-gray-800);
    margin-bottom: 6px;
}
.sig-feature-card p {
    font-size: 13px;
    color: var(--sig-gray-500);
    margin: 0;
    line-height: 1.5;
}

/* ===== FAQ ===== */
.sig-faq-section {
    margin: 40px 0;
    padding: 32px 36px;
    background: var(--sig-white);
    border: 1px solid var(--sig-gray-200);
    border-radius: var(--sig-radius);
    box-shadow: var(--sig-shadow);
}
.sig-faq-section h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--sig-gray-900);
    margin-bottom: 20px;
}
.sig-faq-list { display: flex; flex-direction: column; gap: 8px; }
.sig-faq-item {
    border: 1px solid var(--sig-gray-200);
    border-radius: var(--sig-radius-sm);
    overflow: hidden;
}
.sig-faq-q {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 18px;
    background: var(--sig-gray-50);
    border: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    color: var(--sig-gray-800);
    text-align: left;
    font-family: var(--sig-font);
    gap: 12px;
    transition: background var(--sig-transition);
}
.sig-faq-q:hover { background: var(--sig-brand-light); }
.sig-faq-icon {
    font-size: 20px;
    font-weight: 400;
    color: var(--sig-gray-400);
    flex-shrink: 0;
    transition: transform var(--sig-transition);
}
.sig-faq-q[aria-expanded="true"] .sig-faq-icon { transform: rotate(45deg); color: var(--sig-brand); }
.sig-faq-a {
    padding: 14px 18px;
    background: white;
    border-top: 1px solid var(--sig-gray-100);
}
.sig-faq-a p {
    font-size: 14px;
    color: var(--sig-gray-600);
    line-height: 1.7;
    margin: 0;
}

/* ===== FOOTER NOTE ===== */
.sig-footer-note {
    text-align: center;
    padding: 24px;
    color: var(--sig-gray-400);
    font-size: 12.5px;
    line-height: 1.7;
}

/* ===== PRINT STYLES ===== */
@media print {
    #sig-wrap > *:not(.sig-invoice-print-area) { display: none !important; }
    .sig-action-bar, .sig-form-panel, .sig-preview-header,
    .sig-intro, .sig-templates-section, .sig-content-section,
    .sig-faq-section, .sig-footer-note { display: none !important; }
    .sig-preview-panel {
        position: static !important;
        border: none !important;
        background: white !important;
        box-shadow: none !important;
    }
    .sig-invoice-preview { padding: 0 !important; max-height: none !important; overflow: visible !important; }
    .sig-inv-paper { box-shadow: none !important; }
    body { background: white !important; }
}