/* ==========================================================================
   Helix Middleware — Main Stylesheet
   Vanilla CSS3 with Grid & Flexbox. No frameworks.
   ========================================================================== */

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

:root {
    --color-bg: #f4f6f9;
    --color-surface: #ffffff;
    --color-sidebar: #1e293b;
    --color-sidebar-text: #cbd5e1;
    --color-sidebar-active: #3b82f6;
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-danger: #ef4444;
    --color-warning: #f59e0b;
    --color-success: #22c55e;
    --color-info: #06b6d4;
    --color-neutral: #94a3b8;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-border: #e2e8f0;
    --radius: 8px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --sidebar-width: 240px;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

html, body {
    height: 100%;
    font-family: var(--font-family);
    font-size: 15px;
    line-height: 1.5;
    color: var(--color-text);
    background: var(--color-bg);
}

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

a:hover {
    text-decoration: underline;
}

/* --- Layout: Sidebar + Main --- */
body {
    display: flex;
    min-height: 100vh;
}

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

.sidebar-brand {
    padding: 24px 20px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-brand h2 {
    font-size: 1.35rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.02em;
}

.sidebar-nav {
    list-style: none;
    padding: 12px 0;
    flex: 1;
}

.sidebar-nav li a {
    display: block;
    padding: 10px 20px;
    color: var(--color-sidebar-text);
    font-size: 0.95rem;
    transition: background 0.15s, color 0.15s;
    border-left: 3px solid transparent;
}

.sidebar-nav li a:hover,
.sidebar-nav li a.active {
    background: rgba(255,255,255,0.06);
    color: #fff;
    text-decoration: none;
    border-left-color: var(--color-sidebar-active);
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255,255,255,0.08);
    font-size: 0.85rem;
}

.sidebar-footer .user-email {
    display: block;
    margin-bottom: 4px;
    color: var(--color-sidebar-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sidebar-footer .logout-link {
    color: var(--color-danger);
    font-size: 0.85rem;
}

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

.top-bar {
    padding: 20px 32px;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.top-bar h1 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--color-text);
}

.page-content {
    padding: 28px 32px;
    flex: 1;
}

/* --- Status Grid (Dashboard) --- */
.status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.status-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-neutral);
    transition: transform 0.15s, box-shadow 0.15s;
}

.status-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.status-card.status-success { border-left-color: var(--color-success); }
.status-card.status-danger  { border-left-color: var(--color-danger); }
.status-card.status-warning { border-left-color: var(--color-warning); }
.status-card.status-info    { border-left-color: var(--color-info); }
.status-card.status-neutral { border-left-color: var(--color-neutral); }

.status-count {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 6px;
}

.status-label {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* --- Section Titles --- */
.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--color-text);
}

/* --- Data Table --- */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.data-table thead th {
    background: #f8fafc;
    padding: 12px 16px;
    text-align: left;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--color-border);
}

.data-table tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.92rem;
}

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

.data-table tbody tr:hover {
    background: #f8fafc;
}

.error-cell {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* --- Badge --- */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge.status-success { background: #dcfce7; color: #166534; }
.badge.status-danger  { background: #fee2e2; color: #991b1b; }
.badge.status-warning { background: #fef3c7; color: #92400e; }
.badge.status-info    { background: #cffafe; color: #155e75; }
.badge.status-neutral { background: #f1f5f9; color: #475569; }

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 8px 18px;
    border: none;
    border-radius: var(--radius);
    font-size: 0.92rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s, transform 0.1s;
    text-align: center;
    line-height: 1.4;
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-primary-dark);
}

.btn-sm {
    padding: 4px 12px;
    font-size: 0.82rem;
    background: #f1f5f9;
    color: var(--color-text);
}

.btn-sm:hover {
    background: #e2e8f0;
}

.btn-block {
    display: block;
    width: 100%;
}

/* --- Alert --- */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-size: 0.92rem;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

/* --- Forms --- */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-family: var(--font-family);
    transition: border-color 0.15s, box-shadow 0.15s;
    background: #fff;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
}

/* --- Login Page --- */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: var(--color-surface);
    border-radius: 12px;
    padding: 40px 36px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.login-header {
    text-align: center;
    margin-bottom: 28px;
}

.login-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 4px;
}

.login-header p {
    color: var(--color-text-muted);
    font-size: 0.92rem;
}

.login-form .btn {
    margin-top: 8px;
    padding: 12px;
    font-size: 1rem;
}

/* --- SSO Login --- */
.login-divider {
    display: flex;
    align-items: center;
    margin: 24px 0 20px;
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.login-divider::before,
.login-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.login-divider span {
    padding: 0 14px;
}

.btn-sso {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px;
    font-size: 1rem;
    font-weight: 500;
    background: #fff;
    color: #3c4043;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    text-decoration: none;
    cursor: pointer;
    transition: background 0.15s, box-shadow 0.15s;
}

.btn-sso:hover {
    background: #f8f9fa;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

.sso-icon {
    flex-shrink: 0;
}

/* --- Empty State --- */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--color-text-muted);
    font-size: 1rem;
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

/* --- Page Actions Bar --- */
.page-actions {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 20px;
    gap: 10px;
}

/* --- Form Container (CRUD) --- */
.form-container {
    background: var(--color-surface);
    border-radius: var(--radius);
    padding: 28px 32px;
    box-shadow: var(--shadow-sm);
    max-width: 800px;
}

.form-heading {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--color-text);
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.crud-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.crud-form .form-row-3 {
    grid-template-columns: 1fr 1fr 1fr;
}

.crud-form .form-row-4 {
    grid-template-columns: 1fr 1fr 1fr 1fr;
}

.form-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

.form-group-btn-align {
    display: flex;
    align-items: flex-end;
}

.error-list {
    list-style: disc;
    padding-left: 20px;
    margin: 0;
}

/* --- Inline Form (delete buttons) --- */
.inline-form {
    display: inline-block;
}

.actions-cell {
    white-space: nowrap;
    display: flex;
    gap: 6px;
    align-items: center;
}

/* --- Danger Button (small) --- */
.btn-danger-sm {
    padding: 4px 12px;
    font-size: 0.82rem;
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.btn-danger-sm:hover {
    background: #fecaca;
}

/* --- Text Utilities --- */
.text-muted {
    color: var(--color-text-muted);
    font-size: 0.92rem;
}

code {
    background: #f1f5f9;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.88rem;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

/* --- Filter Bar --- */
.filter-bar {
    background: var(--color-surface);
    border-radius: var(--radius);
    padding: 16px 20px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.filter-form .form-row {
    display: flex;
    gap: 16px;
    align-items: flex-end;
}

.filter-form .form-group {
    margin-bottom: 0;
    min-width: 220px;
}

/* --- Mapping Section --- */
.mapping-section {
    margin-bottom: 32px;
}

.inline-add-form {
    margin-top: 16px;
    padding: 20px;
    background: #f8fafc;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}

.inline-add-form h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text);
}

.inline-add-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 12px;
}

.inline-add-form .form-row-3 {
    grid-template-columns: 1fr 1fr 1fr;
}

.inline-add-form .form-row-4 {
    grid-template-columns: 1fr 1fr 1fr 1fr;
}

/* --- Tags --- */
.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
}

.tag {
    display: inline-block;
    padding: 3px 10px;
    background: #e0f2fe;
    color: #0c4a6e;
    border-radius: 12px;
    font-size: 0.78rem;
    font-weight: 500;
}

/* --- Info Panel --- */
.info-panel {
    background: var(--color-surface);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-info);
}

/* --- Link Store Form --- */
.link-store-form {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

.link-store-form .form-row {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

.link-store-form .form-group {
    flex: 1;
    margin-bottom: 0;
}

.link-store-form .form-group-btn-align {
    flex: 0;
}

/* --- OAuth2 & ERP Accounts Sections --- */
.oauth-section,
.erp-accounts-section {
    margin-top: 32px;
}

.oauth-status {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.oauth-status p {
    margin: 4px 0 0 0;
    width: 100%;
}

.oauth-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.accounts-cache-info {
    margin-bottom: 12px;
}

.accounts-cache-info p {
    margin: 0;
}

.hint-text {
    margin-top: 8px;
    font-size: 0.9rem;
}

/* --- Batch Detail Page --- */
.batch-detail-breadcrumb {
    margin-bottom: 16px;
}

.batch-detail-breadcrumb a {
    font-size: 0.9rem;
    color: var(--color-primary);
}

.batch-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    background: var(--color-surface);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}

.batch-detail-header-info h2 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.batch-detail-header-info p {
    margin: 0;
}

.badge-lg {
    font-size: 0.95rem !important;
    padding: 6px 16px !important;
}

.batch-detail-summary {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}

.batch-summary-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.batch-summary-label {
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.batch-summary-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
}

.batch-summary-positive .batch-summary-value {
    color: var(--color-success);
}

.batch-summary-negative .batch-summary-value {
    color: var(--color-danger);
}

.batch-detail-actions {
    display: flex;
    gap: 10px;
    margin-bottom: 28px;
}

.batch-detail-section {
    background: var(--color-surface);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.batch-detail-section .section-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--color-border);
}

.batch-lines-group {
    margin-bottom: 20px;
}

.batch-lines-group:last-child {
    margin-bottom: 0;
}

.batch-lines-group-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.batch-lines-group-total {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-text-muted);
}

.data-table-compact {
    font-size: 0.88rem;
}

.data-table-compact th,
.data-table-compact td {
    padding: 8px 12px;
}

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

.batch-metadata-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}

.batch-metadata-item {
    display: flex;
    flex-direction: column;
}

.batch-metadata-label {
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-muted);
    margin-bottom: 2px;
}

.batch-metadata-value {
    font-size: 0.95rem;
    color: var(--color-text);
}

/* --- Warning Button --- */
.btn-warning {
    padding: 8px 18px;
    font-size: 0.92rem;
    font-weight: 500;
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fde68a;
}

.btn-warning:hover {
    background: #fde68a;
}

.btn-warning-sm {
    padding: 4px 12px;
    font-size: 0.82rem;
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fde68a;
}

.btn-warning-sm:hover {
    background: #fde68a;
}

/* --- Status Report: Next Action --- */
.status-next-action {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    max-width: 220px;
    display: inline-block;
    line-height: 1.3;
}

/* --- Status Card Value (used in batch index summary) --- */
.status-card-value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 6px;
}

.status-card-label {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        position: relative;
        height: auto;
    }
    .main-content {
        margin-left: 0;
    }
    .status-grid {
        grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    }
    .page-content {
        padding: 16px;
    }
}