/* ================================================================
   ERP Integration System — Main Stylesheet
   ================================================================
   Design philosophy: Professional ERP clarity over visual flair.
   Clean typography, high-density data tables, clear information
   hierarchy. Inspired by enterprise dashboards (SAP, Oracle, HashMicro).
   ================================================================ */

/* ─── CSS Custom Properties (Design Tokens) ─────────────────── */
:root {
    /* Core palette */
    --color-bg:           #f4f6f9;
    --color-surface:      #ffffff;
    --color-sidebar:      #1e293b;
    --color-sidebar-hover:#334155;
    --color-sidebar-active:#0f172a;
    --color-topbar:       #ffffff;

    /* Text */
    --color-text:         #1e293b;
    --color-text-muted:   #64748b;
    --color-text-light:   #94a3b8;
    --color-text-sidebar: #cbd5e1;
    --color-text-sidebar-active: #ffffff;

    /* Accent */
    --color-primary:      #2563eb;
    --color-primary-hover:#1d4ed8;
    --color-primary-light:#dbeafe;

    /* Status badges */
    --color-confirmed:    #059669;
    --color-confirmed-bg: #d1fae5;
    --color-pending:      #d97706;
    --color-pending-bg:   #fef3c7;
    --color-received:     #2563eb;
    --color-received-bg:  #dbeafe;
    --color-danger:       #dc2626;
    --color-danger-bg:    #fee2e2;

    /* Borders & shadows */
    --border-color:       #e2e8f0;
    --shadow-sm:          0 1px 2px rgba(0,0,0,0.05);
    --shadow-md:          0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg:          0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);

    /* Layout */
    --sidebar-width:      250px;
    --topbar-height:      60px;
    --radius:             8px;
    --radius-sm:          4px;

    /* Typography */
    --font-sans:          'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono:          'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}

/* ─── Reset & Base ──────────────────────────────────────────── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.5;
    min-height: 100vh;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

/* ─── Layout: Shell ─────────────────────────────────────────── */
.erp-shell {
    display: flex;
    min-height: 100vh;
}

/* ─── Sidebar ───────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    background: var(--color-sidebar);
    color: var(--color-text-sidebar);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    overflow-y: auto;
}

.sidebar-brand {
    padding: 20px 20px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-brand h1 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.01em;
}

.sidebar-brand span {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-top: 2px;
    font-weight: 400;
}

.sidebar-nav {
    padding: 12px 0;
    flex: 1;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    color: var(--color-text-sidebar);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background 0.15s, color 0.15s;
    border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
    background: var(--color-sidebar-hover);
    color: #fff;
    text-decoration: none;
}

.sidebar-nav a.active {
    background: var(--color-sidebar-active);
    color: var(--color-text-sidebar-active);
    border-left-color: var(--color-primary);
}

.sidebar-nav .nav-icon {
    width: 20px;
    text-align: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255,255,255,0.08);
    font-size: 0.75rem;
    color: var(--color-text-light);
}

/* ─── Main Content ──────────────────────────────────────────── */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ─── Topbar ────────────────────────────────────────────────── */
.topbar {
    height: var(--topbar-height);
    background: var(--color-topbar);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: var(--shadow-sm);
}

.topbar-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-text);
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ─── Page Content ──────────────────────────────────────────── */
.page-content {
    flex: 1;
    padding: 24px 28px;
}

/* ─── Cards ─────────────────────────────────────────────────── */
.card {
    background: var(--color-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h2 {
    font-size: 1rem;
    font-weight: 600;
}

.card-body {
    padding: 20px;
}

.card-body.no-pad {
    padding: 0;
}

/* ─── KPI Cards (Dashboard) ─────────────────────────────────── */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.kpi-card {
    background: var(--color-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s;
}

.kpi-card:hover {
    box-shadow: var(--shadow-md);
}

.kpi-card .kpi-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.kpi-card .kpi-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.2;
}

.kpi-card .kpi-sub {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 6px;
}

.kpi-card.accent-blue    { border-top: 3px solid var(--color-primary); }
.kpi-card.accent-green   { border-top: 3px solid var(--color-confirmed); }
.kpi-card.accent-orange  { border-top: 3px solid var(--color-pending); }
.kpi-card.accent-red     { border-top: 3px solid var(--color-danger); }

/* ─── Tables ────────────────────────────────────────────────── */
.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

table thead th {
    background: #f8fafc;
    border-bottom: 2px solid var(--border-color);
    padding: 10px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--color-text-muted);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

table tbody td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

table tbody tr:hover {
    background: #f8fafc;
}

table tbody tr:last-child td {
    border-bottom: none;
}

table .text-right {
    text-align: right;
}

table .text-center {
    text-align: center;
}

table .text-mono {
    font-family: var(--font-mono);
    font-size: 0.82rem;
}

/* ─── Badges ────────────────────────────────────────────────── */
.badge {
    display: inline-block;
    padding: 3px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 999px;
    text-transform: capitalize;
    white-space: nowrap;
}

.badge-confirmed {
    background: var(--color-confirmed-bg);
    color: var(--color-confirmed);
}

.badge-pending_stock, .badge-pending {
    background: var(--color-pending-bg);
    color: var(--color-pending);
}

.badge-received {
    background: var(--color-received-bg);
    color: var(--color-received);
}

.badge-danger {
    background: var(--color-danger-bg);
    color: var(--color-danger);
}

.badge-debit {
    background: #dbeafe;
    color: #1e40af;
}

.badge-credit {
    background: #fce7f3;
    color: #be185d;
}

/* ─── Buttons ───────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, box-shadow 0.15s;
    font-family: var(--font-sans);
    text-decoration: none;
    line-height: 1.4;
}

.btn:hover {
    text-decoration: none;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--color-primary-hover);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background: #fff;
    color: var(--color-text);
    border-color: var(--border-color);
}
.btn-secondary:hover {
    background: #f8fafc;
}

.btn-success {
    background: var(--color-confirmed);
    color: #fff;
}
.btn-success:hover {
    background: #047857;
}

.btn-danger {
    background: var(--color-danger);
    color: #fff;
}
.btn-danger:hover {
    background: #b91c1c;
}

.btn-sm {
    padding: 5px 12px;
    font-size: 0.78rem;
}

/* ─── Forms ─────────────────────────────────────────────────── */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 5px;
}

.form-control {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-family: var(--font-sans);
    color: var(--color-text);
    background: #fff;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 30px;
}

.form-inline {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    flex-wrap: wrap;
}

.form-inline .form-group {
    margin-bottom: 0;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
}

/* ─── Filter Bar ────────────────────────────────────────────── */
.filter-bar {
    background: var(--color-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 16px 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
}

/* ─── Sections ──────────────────────────────────────────────── */
.section {
    margin-bottom: 24px;
}

.section-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ─── Order Detail ──────────────────────────────────────────── */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.detail-item {
    padding: 12px 16px;
    background: #f8fafc;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.detail-item .detail-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.detail-item .detail-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
}

/* ─── Webhook Simulator ─────────────────────────────────────── */
.simulator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 900px) {
    .simulator-grid {
        grid-template-columns: 1fr;
    }
}

.json-output {
    background: #1e293b;
    color: #e2e8f0;
    padding: 16px;
    border-radius: var(--radius);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 500px;
    overflow-y: auto;
    min-height: 200px;
    line-height: 1.6;
}

.json-output .json-key { color: #7dd3fc; }
.json-output .json-string { color: #86efac; }
.json-output .json-number { color: #fbbf24; }
.json-output .json-bool { color: #c084fc; }
.json-output .json-null { color: #94a3b8; }

/* ─── Item Row (dynamic form) ───────────────────────────────── */
.item-row {
    display: grid;
    grid-template-columns: 2fr 1fr 2fr 40px;
    gap: 8px;
    align-items: end;
    margin-bottom: 8px;
    padding: 10px;
    background: #f8fafc;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.item-row .btn-remove {
    padding: 8px;
    background: transparent;
    border: none;
    color: var(--color-danger);
    cursor: pointer;
    font-size: 1.1rem;
    border-radius: var(--radius-sm);
}
.item-row .btn-remove:hover {
    background: var(--color-danger-bg);
}

/* ─── Alerts ────────────────────────────────────────────────── */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    font-size: 0.875rem;
    border: 1px solid;
}

.alert-success {
    background: var(--color-confirmed-bg);
    color: var(--color-confirmed);
    border-color: #a7f3d0;
}

.alert-error {
    background: var(--color-danger-bg);
    color: var(--color-danger);
    border-color: #fecaca;
}

.alert-info {
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-color: #bfdbfe;
}

/* ─── Stock indicator ───────────────────────────────────────── */
.stock-bar {
    height: 6px;
    background: #e2e8f0;
    border-radius: 3px;
    overflow: hidden;
    margin-top: 4px;
}

.stock-bar-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.3s;
}

.stock-bar-fill.stock-ok   { background: var(--color-confirmed); }
.stock-bar-fill.stock-low  { background: var(--color-pending); }
.stock-bar-fill.stock-out  { background: var(--color-danger); }

/* ─── Pagination ────────────────────────────────────────────── */
.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
    font-size: 0.82rem;
    color: var(--color-text-muted);
}

.pagination-links {
    display: flex;
    gap: 4px;
}

.pagination-links a,
.pagination-links span {
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    color: var(--color-text);
    font-weight: 500;
}

.pagination-links a:hover {
    background: #f8fafc;
    text-decoration: none;
}

.pagination-links .current {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* ─── Ledger ────────────────────────────────────────────────── */
.ledger-account {
    margin-bottom: 24px;
}

.ledger-account-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: #f8fafc;
    border-bottom: 2px solid var(--border-color);
}

.ledger-account-header .account-name {
    font-weight: 700;
    font-size: 0.95rem;
}

.ledger-account-header .account-code {
    font-family: var(--font-mono);
    color: var(--color-text-muted);
    font-size: 0.82rem;
}

.ledger-summary {
    display: flex;
    gap: 24px;
    padding: 10px 16px;
    background: #f1f5f9;
    font-size: 0.82rem;
    font-weight: 600;
}

.ledger-summary span {
    color: var(--color-text-muted);
}

/* ─── Empty state ───────────────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--color-text-muted);
}

.empty-state .empty-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
    opacity: 0.4;
}

.empty-state p {
    font-size: 0.9rem;
}

/* ─── Responsive ────────────────────────────────────────────── */
@media (max-width: 768px) {
    .sidebar {
        display: none;
    }
    .main-content {
        margin-left: 0;
    }
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .detail-grid {
        grid-template-columns: 1fr;
    }
    .item-row {
        grid-template-columns: 1fr;
    }
}

/* ─── Utility ───────────────────────────────────────────────── */
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.text-muted { color: var(--color-text-muted); }
.text-sm { font-size: 0.82rem; }
.font-mono { font-family: var(--font-mono); }
.font-bold { font-weight: 700; }
.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.justify-between { justify-content: space-between; }
.w-full { width: 100%; }

/* ─── Badge: Rejected ───────────────────────────────────────── */
.badge-rejected {
    background: var(--color-danger-bg);
    color: var(--color-danger);
}

/* ─── Dashboard Grid ────────────────────────────────────────── */
.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
}
@media (max-width: 900px) {
    .dashboard-grid { grid-template-columns: 1fr; }
}

/* ─── Footer ────────────────────────────────────────────────── */
.site-footer {
    padding: 16px 28px;
    border-top: 1px solid var(--border-color);
    font-size: 0.78rem;
    color: var(--color-text-muted);
    text-align: center;
    background: var(--color-surface);
}
.site-footer .footer-sub {
    font-size: 0.72rem;
    color: var(--color-text-light);
    margin-top: 2px;
}

/* ─── Info Box (contextual help) ────────────────────────────── */
.info-box {
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    margin-bottom: 16px;
    font-size: 0.85rem;
    color: #0c4a6e;
    line-height: 1.6;
}

/* ─── Settings Form ─────────────────────────────────────────── */
.settings-group {
    margin-bottom: 28px;
}
.settings-group-title {
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 12px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border-color);
}
.setting-row {
    padding: 14px 0;
    border-bottom: 1px solid #f1f5f9;
}
.setting-row:last-child { border-bottom: none; }
.setting-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-text);
    margin-bottom: 2px;
}
.setting-desc {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: 8px;
    line-height: 1.5;
}
.setting-control select {
    min-width: 320px;
}

/* ─── Getting Started Page ──────────────────────────────────── */
.gs-section {
    margin-bottom: 28px;
}
.gs-section h2 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text);
}
.gs-section p, .gs-section li {
    font-size: 0.9rem;
    color: #334155;
    line-height: 1.7;
}
.gs-section ul {
    padding-left: 20px;
    margin-top: 6px;
}
.gs-section li { margin-bottom: 4px; }
.gs-flow {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    padding: 16px;
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    margin-top: 8px;
}
.gs-flow-step {
    padding: 8px 16px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.85rem;
}
.gs-flow-arrow {
    color: var(--color-text-light);
    font-size: 1.1rem;
}

/* ─── Onboarding Modal ──────────────────────────────────────── */
.onboarding-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}
.onboarding-modal {
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    max-width: 560px;
    width: 90%;
    max-height: 85vh;
    overflow-y: auto;
    padding: 28px;
}
.onboarding-modal h2 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 4px;
}
.onboarding-modal .onboarding-sub {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 20px;
}
.onboarding-modal h3 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-top: 16px;
    margin-bottom: 6px;
}
.onboarding-modal p, .onboarding-modal li {
    font-size: 0.88rem;
    color: #334155;
    line-height: 1.7;
}
.onboarding-modal ul {
    padding-left: 18px;
    margin-bottom: 12px;
}
.onboarding-modal li { margin-bottom: 3px; }
.onboarding-footer {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.onboarding-footer label {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
}
.onboarding-footer input[type="checkbox"] {
    width: 15px;
    height: 15px;
    cursor: pointer;
}

/* ─── Sidebar Divider ───────────────────────────────────────── */
.sidebar-divider {
    height: 1px;
    background: rgba(255,255,255,0.08);
    margin: 6px 16px;
}