/* ============================================
   Archways ABA — Billing & Payroll
   Design System + All Page Styles
   ============================================ */

/* --- Variables --- */
:root {
    --color-primary: #1a56db;
    --color-primary-hover: #1648b8;
    --color-primary-light: #e8eefb;
    --color-secondary: #6b7280;
    --color-success: #059669;
    --color-success-light: #ecfdf5;
    --color-warning: #d97706;
    --color-warning-light: #fffbeb;
    --color-danger: #dc2626;
    --color-danger-light: #fef2f2;
    --color-info: #2563eb;
    --color-info-light: #eff6ff;

    --color-bg: #f3f4f6;
    --color-surface: #ffffff;
    --color-border: #e5e7eb;
    --color-border-dark: #d1d5db;
    --color-text: #111827;
    --color-text-secondary: #6b7280;
    --color-text-muted: #9ca3af;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);

    --nav-width: 240px;
    --nav-collapsed: 64px;
    --header-height: 56px;

    --transition: 150ms ease;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; }
body {
    font-family: var(--font-family);
    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; }
img { max-width: 100%; display: block; }
table { border-collapse: collapse; width: 100%; }
button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}
h1 { font-size: 1.75rem; font-weight: 700; }
h2 { font-size: 1.375rem; font-weight: 600; }
h3 { font-size: 1.125rem; font-weight: 600; }
h4 { font-size: 1rem; font-weight: 600; }

/* --- Layout --- */
.app-layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--nav-width);
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform var(--transition);
}

.sidebar-brand {
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-brand h2 {
    font-size: 1rem;
    color: var(--color-primary);
    white-space: nowrap;
}

.sidebar-brand .brand-icon {
    width: 32px;
    height: 32px;
    background: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 1rem;
    flex-shrink: 0;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 8px;
    overflow-y: auto;
}

.nav-section {
    margin-bottom: 8px;
}

.nav-section-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    padding: 8px 12px 4px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: all var(--transition);
    cursor: pointer;
    text-decoration: none;
}

.nav-link:hover {
    background: var(--color-bg);
    color: var(--color-text);
    text-decoration: none;
}

.nav-link.active {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.nav-link svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--color-border);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-user .avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.sidebar-user .user-info {
    flex: 1;
    min-width: 0;
}

.sidebar-user .user-name {
    font-weight: 600;
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user .user-role {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    text-transform: capitalize;
}

.main-content {
    flex: 1;
    margin-left: var(--nav-width);
    padding: 24px 32px;
    min-height: 100vh;
}

/* --- Page Header --- */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.page-header h1 {
    display: flex;
    align-items: center;
    gap: 10px;
}

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

/* --- Cards --- */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-sm);
}

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

.card-header h3 {
    font-size: 0.95rem;
}

/* --- KPI Cards --- */
.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(--color-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-sm);
}

.kpi-card .kpi-label {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    margin-bottom: 4px;
}

.kpi-card .kpi-value {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.2;
}

.kpi-card .kpi-sub {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.kpi-card.kpi-success .kpi-value { color: var(--color-success); }
.kpi-card.kpi-warning .kpi-value { color: var(--color-warning); }
.kpi-card.kpi-danger .kpi-value { color: var(--color-danger); }

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition);
    white-space: nowrap;
    font-size: 0.875rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn svg { width: 16px; height: 16px; }

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}
.btn-primary:hover:not(:disabled) { background: var(--color-primary-hover); }

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border-color: var(--color-border);
}
.btn-secondary:hover:not(:disabled) { background: var(--color-bg); }

.btn-success {
    background: var(--color-success);
    color: #fff;
}
.btn-success:hover:not(:disabled) { background: #047857; }

.btn-danger {
    background: var(--color-danger);
    color: #fff;
}
.btn-danger:hover:not(:disabled) { background: #b91c1c; }

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
}
.btn-ghost:hover:not(:disabled) { background: var(--color-bg); color: var(--color-text); }

.btn-sm { padding: 4px 10px; font-size: 0.8rem; }
.btn-lg { padding: 10px 20px; font-size: 1rem; }

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

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 4px;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    transition: border-color var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
}

.form-input.error,
.form-select.error {
    border-color: var(--color-danger);
}

.form-error {
    color: var(--color-danger);
    font-size: 0.8rem;
    margin-top: 4px;
}

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

.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-check input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
}

/* --- Tables --- */
.table-container {
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
}

.data-table {
    width: 100%;
    font-size: 0.85rem;
}

.data-table thead {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.data-table th {
    padding: 10px 14px;
    text-align: left;
    font-weight: 600;
    color: var(--color-text-secondary);
    white-space: nowrap;
    cursor: pointer;
    user-select: none;
}

.data-table th:hover {
    color: var(--color-text);
}

.data-table th .sort-icon {
    display: inline-block;
    margin-left: 4px;
    opacity: 0.3;
}

.data-table th.sorted .sort-icon {
    opacity: 1;
    color: var(--color-primary);
}

.data-table td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.data-table tbody tr:hover {
    background: #f9fafb;
}

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

.data-table .text-right { text-align: right; }
.data-table .text-center { text-align: center; }
.data-table .text-mono { font-family: var(--font-mono); font-size: 0.8rem; }

/* --- Status Badges --- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.badge-success { background: var(--color-success-light); color: var(--color-success); }
.badge-warning { background: var(--color-warning-light); color: var(--color-warning); }
.badge-danger { background: var(--color-danger-light); color: var(--color-danger); }
.badge-info { background: var(--color-info-light); color: var(--color-info); }
.badge-secondary { background: var(--color-bg); color: var(--color-text-secondary); }

/* --- Tabs --- */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--color-border);
    margin-bottom: 24px;
    gap: 0;
}

.tab-btn {
    padding: 10px 20px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    font-weight: 500;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--color-text);
    background: var(--color-bg);
}

.tab-btn.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* --- Filter Bar --- */
.filter-bar {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: end;
    margin-bottom: 16px;
    padding: 16px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.filter-bar .form-group {
    margin-bottom: 0;
    min-width: 150px;
}

.filter-bar .form-input,
.filter-bar .form-select {
    padding: 6px 10px;
    font-size: 0.85rem;
}

/* --- Modal --- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
}

.modal-overlay.open {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    transform: translateY(20px);
    transition: transform var(--transition);
}

.modal-overlay.open .modal {
    transform: translateY(0);
}

.modal-lg { max-width: 900px; }
.modal-xl { max-width: 1100px; }

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

.modal-header h3 {
    font-size: 1.05rem;
}

.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-secondary);
    padding: 4px;
    border-radius: var(--radius-sm);
}

.modal-close:hover { background: var(--color-bg); }

.modal-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 16px 20px;
    border-top: 1px solid var(--color-border);
}

/* --- Toast --- */
.toast-container {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 300px;
    max-width: 450px;
    animation: slideIn 0.2s ease;
}

.toast.toast-success { border-left: 4px solid var(--color-success); }
.toast.toast-error { border-left: 4px solid var(--color-danger); }
.toast.toast-warning { border-left: 4px solid var(--color-warning); }
.toast.toast-info { border-left: 4px solid var(--color-info); }

.toast-close {
    margin-left: auto;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-muted);
    padding: 2px;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* --- Pagination --- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-top: 1px solid var(--color-border);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

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

.pagination-btn {
    padding: 4px 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    cursor: pointer;
    font-size: 0.8rem;
}

.pagination-btn:hover:not(:disabled) { background: var(--color-bg); }
.pagination-btn.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.pagination-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* --- Import Dropzone --- */
.dropzone {
    border: 2px dashed var(--color-border-dark);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--color-bg);
}

.dropzone:hover,
.dropzone.dragover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.dropzone svg {
    width: 40px;
    height: 40px;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.dropzone p {
    color: var(--color-text-secondary);
    margin-bottom: 4px;
}

.dropzone .dropzone-hint {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* --- Column Mapper --- */
.column-mapper {
    overflow-x: auto;
    margin: 16px 0;
}

.column-mapper table {
    font-size: 0.8rem;
}

.column-mapper th {
    padding: 6px 8px;
}

.column-mapper .mapper-select {
    padding: 4px 6px;
    font-size: 0.8rem;
    width: 100%;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.column-mapper td {
    padding: 4px 8px;
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* --- Empty State --- */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--color-text-muted);
}

.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.empty-state h3 {
    color: var(--color-text-secondary);
    margin-bottom: 4px;
}

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

/* --- Loading --- */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

.skeleton {
    background: linear-gradient(90deg, var(--color-bg) 25%, #e5e7eb 50%, var(--color-bg) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* --- Login Page --- */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
}

.login-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 40px;
    width: 100%;
    max-width: 400px;
}

.login-brand {
    text-align: center;
    margin-bottom: 32px;
}

.login-brand .brand-icon {
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 1.25rem;
    margin: 0 auto 12px;
}

.login-brand h1 {
    font-size: 1.25rem;
    margin-bottom: 2px;
}

.login-brand p {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.login-error {
    background: var(--color-danger-light);
    color: var(--color-danger);
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    margin-bottom: 16px;
    display: none;
}

.login-form .btn {
    width: 100%;
    justify-content: center;
    padding: 10px;
}

.login-forgot {
    text-align: center;
    margin-top: 16px;
    font-size: 0.85rem;
}

/* --- Grid helpers --- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.gap-sm { gap: 8px; }
.gap-lg { gap: 24px; }

/* --- Utility --- */
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-danger { color: var(--color-danger); }
.text-muted { color: var(--color-text-muted); }
.text-sm { font-size: 0.85rem; }
.text-xs { font-size: 0.75rem; }
.font-mono { font-family: var(--font-mono); }
.font-bold { font-weight: 700; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* --- Progress Bar --- */
.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--color-bg);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar .progress-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
}

/* --- Responsive --- */
/* --- Mobile menu toggle --- */
.mobile-menu-btn {
    display: none;
    position: fixed;
    top: 10px;
    left: 10px;
    z-index: 101;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 10px;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (max-width: 1024px) {
    .mobile-menu-btn { display: flex !important; }
}

/* Sidebar backdrop on mobile */
.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
    opacity: 0;
    transition: opacity var(--transition);
}

.sidebar-backdrop.visible {
    display: block;
    opacity: 1;
}

/* ===========================================
   TABLET & LARGE MOBILE (≤ 1024px)
   =========================================== */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        width: 280px;
        max-width: 85%;
        box-shadow: var(--shadow-lg);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        padding: 60px 16px 24px;
    }

    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .filter-bar {
        flex-direction: column;
        padding: 12px;
    }

    .filter-bar .form-group {
        width: 100%;
        min-width: 0 !important;
    }

    /* Handle inline grid-template-columns overrides on key pages */
    .grid-2[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
    }
}

/* ===========================================
   PHONE (≤ 768px)
   =========================================== */
@media (max-width: 768px) {
    html { font-size: 13.5px; }

    body { -webkit-text-size-adjust: 100%; }

    .main-content {
        padding: 56px 12px 16px;
    }

    /* Page header stacks fully */
    .page-header {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
        margin-bottom: 14px;
    }

    .page-header > div:first-child {
        min-width: 0;
    }

    .page-header h1 {
        font-size: 1.3rem;
        line-height: 1.25;
    }

    .page-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 6px;
        width: 100%;
    }

    .page-actions .btn {
        flex: 1 1 auto;
        min-width: 0;
        font-size: 0.8rem;
        padding: 10px 10px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    /* Touch-friendly buttons */
    .btn {
        min-height: 40px;
    }
    .btn-sm {
        min-height: 34px;
    }

    /* KPIs — single column, smaller */
    .kpi-grid {
        grid-template-columns: 1fr !important;
        gap: 10px;
        margin-bottom: 14px;
    }
    .kpi-card {
        padding: 14px;
    }
    .kpi-card .kpi-value {
        font-size: 1.4rem;
    }
    .kpi-card .kpi-label {
        font-size: 0.75rem;
    }

    /* Cards */
    .card {
        padding: 14px;
    }
    .card-header h3 {
        font-size: 0.9rem;
    }
    h1 { font-size: 1.3rem; }
    h2 { font-size: 1.1rem; }
    h3 { font-size: 1rem; }

    /* ALL grids collapse to single column — override inline styles too */
    .grid-2, .grid-3,
    .grid-2[style], .grid-3[style] {
        grid-template-columns: 1fr !important;
        gap: 12px;
    }

    /* Tabs — scroll horizontally instead of wrapping */
    .tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
        margin-bottom: 16px;
        margin-left: -12px;
        margin-right: -12px;
        padding: 0 12px;
        scrollbar-width: none;
    }
    .tabs::-webkit-scrollbar { display: none; }

    .tab-btn {
        flex-shrink: 0;
        padding: 10px 14px;
        font-size: 0.85rem;
    }

    /* Form rows stack */
    .form-row {
        grid-template-columns: 1fr !important;
        gap: 10px;
    }

    /* Modal — full screen */
    .modal-overlay {
        padding: 0;
        align-items: flex-end;
    }
    .modal {
        width: 100%;
        max-width: 100%;
        max-height: 100vh;
        height: 100vh;
        border-radius: 0;
        margin: 0;
        transform: translateY(100%);
    }
    .modal-overlay.open .modal {
        transform: translateY(0);
    }
    .modal-header {
        padding: 14px 16px;
        position: sticky;
        top: 0;
        background: var(--color-surface);
        z-index: 2;
    }
    .modal-body {
        padding: 16px;
    }
    .modal-footer {
        padding: 12px 14px;
        flex-wrap: wrap;
        gap: 6px;
        position: sticky;
        bottom: 0;
        background: var(--color-surface);
        z-index: 2;
    }
    .modal-footer .btn {
        flex: 1 1 auto;
        min-width: 120px;
    }
    .modal-lg, .modal-xl {
        max-width: 100% !important;
    }

    /* Tables — scroll horizontally, compact */
    .table-container {
        margin-left: -12px;
        margin-right: -12px;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }
    .data-table {
        font-size: 0.78rem;
    }
    .data-table th, .data-table td {
        padding: 8px 10px;
        white-space: nowrap;
    }

    /* Pagination */
    .pagination {
        flex-direction: column;
        gap: 8px;
        align-items: stretch;
        text-align: center;
    }
    .pagination-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    /* Filter bar */
    .filter-bar {
        padding: 10px;
        gap: 8px;
    }
    .filter-bar .form-group {
        margin-bottom: 0;
    }

    /* Login card */
    .login-page {
        padding: 16px;
    }
    .login-card {
        padding: 28px 20px;
        max-width: 100%;
    }

    /* Activity timeline */
    .activity-item {
        padding: 10px;
        gap: 8px;
    }
    .activity-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }
    .activity-description {
        font-size: 0.82rem;
    }

    /* Queue items */
    .queue-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        margin-left: -12px;
        margin-right: -12px;
        padding: 0 12px;
    }
    .queue-tabs::-webkit-scrollbar { display: none; }
    .queue-tab {
        flex-shrink: 0;
        padding: 10px 12px;
        font-size: 0.8rem;
    }
    .queue-item-header {
        flex-direction: column;
        gap: 6px;
        align-items: stretch;
    }
    .queue-item-meta {
        flex-wrap: wrap;
        font-size: 0.75rem;
    }
    .queue-item-actions {
        flex-wrap: wrap;
        gap: 4px;
    }
    .queue-item-actions .btn {
        flex: 1 1 auto;
        font-size: 0.75rem;
        padding: 6px 8px;
    }

    /* Pro forma — stack the columns */
    .pf-section-body {
        padding: 10px;
    }
    .pf-row {
        grid-template-columns: 1fr !important;
        gap: 4px;
        padding: 8px 0;
    }
    .pf-row .pf-input {
        width: 100%;
    }

    /* Dynamic rows in pro forma */
    .dyn-row {
        grid-template-columns: 1fr !important;
        gap: 6px;
        padding: 10px 0;
        border-bottom: 1px solid var(--color-border) !important;
    }
    .dyn-header {
        display: none;
    }
    .dyn-row input, .dyn-row select {
        width: 100%;
        font-size: 0.85rem;
        padding: 8px 10px;
    }
    .dyn-del-btn {
        width: 100%;
        padding: 8px;
        font-size: 1rem;
    }

    /* Pro forma KPI info icon */
    .kpi-info-icon {
        width: 16px;
        height: 16px;
        font-size: 0.65rem;
    }

    /* Kanban stacks */
    .kanban-board {
        grid-template-columns: 1fr !important;
    }

    /* Dropzone */
    .dropzone {
        padding: 24px 16px;
    }

    /* Global search — shrink on small screens */
    .global-search input {
        font-size: 0.82rem;
        padding: 8px 10px 8px 28px;
    }

    /* Toast — full width */
    .toast-container {
        top: auto;
        bottom: 8px;
        right: 8px;
        left: 8px;
    }
    .toast {
        min-width: 0;
        max-width: 100%;
        font-size: 0.85rem;
    }

    /* Data table header sort icons less prominent */
    .data-table th {
        font-size: 0.72rem;
    }

    /* Empty states */
    .empty-state {
        padding: 40px 16px;
    }
    .empty-state h3 {
        font-size: 1rem;
    }
}

/* Charts respect container width */
canvas {
    max-width: 100% !important;
}

/* Chart containers — give Chart.js a fixed height to fill */
.chart-wrapper {
    position: relative;
    width: 100%;
    height: 280px;
    margin: 0 auto;
}
@media (max-width: 768px) {
    .chart-wrapper {
        height: 240px;
    }
}
@media (max-width: 480px) {
    .chart-wrapper {
        height: 220px;
    }
}

/* For charts originally set with height attribute — compatibility fallback */
.card > canvas,
.chart-wrapper > canvas {
    width: 100% !important;
    height: 100% !important;
    display: block;
}

/* ===========================================
   MOBILE — Force all inline grid layouts to stack
   (catches the dozens of display:grid inline styles
    across the app that would otherwise stay multi-col)
   =========================================== */
@media (max-width: 768px) {
    html, body {
        overflow-x: hidden;
        max-width: 100vw;
    }

    /* Any div with inline display:grid collapses to single column */
    div[style*="display:grid"],
    div[style*="display: grid"],
    div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
    }

    /* App layout respects viewport */
    .app-layout {
        max-width: 100vw;
        overflow-x: hidden;
    }

    /* Main content can't exceed viewport */
    .main-content {
        max-width: 100vw;
        box-sizing: border-box;
    }

    /* Cards never exceed their container */
    .card {
        max-width: 100%;
        box-sizing: border-box;
        overflow-wrap: anywhere;
    }

    /* Long numbers/text inside cards wrap */
    .kpi-value,
    [style*="font-weight:700"],
    [style*="font-weight: 700"] {
        overflow-wrap: anywhere;
        word-break: break-word;
    }

    /* Sidebar doesn't grow beyond its declared width */
    .sidebar {
        max-width: 85vw;
    }

    /* All form inputs: full width, contained, iOS-zoom-safe */
    input,
    select,
    textarea {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        /* font-size 16px prevents iOS Safari from auto-zooming on focus,
           which visually cuts off content and confuses layout */
        font-size: 16px !important;
    }

    /* Give form inputs breathing room on mobile */
    .form-input,
    .form-select,
    .form-textarea {
        padding: 10px 12px;
    }

    /* Preserve grid for pf-row (label + input stack) but no wider than container */
    .pf-row > * {
        min-width: 0;
        max-width: 100%;
    }

    /* Any grid child can't push its parent wider */
    [class*="grid"] > *,
    div[style*="display:grid"] > *,
    div[style*="display: grid"] > * {
        min-width: 0;
    }
}

/* ===========================================
   SMALL PHONES (≤ 480px)
   =========================================== */
@media (max-width: 480px) {
    html { font-size: 13px; }

    .main-content {
        padding: 54px 10px 16px;
    }

    .page-header h1 {
        font-size: 1.2rem;
    }

    .kpi-card .kpi-value {
        font-size: 1.25rem;
    }

    /* Sidebar expands almost full width */
    .sidebar {
        width: 86%;
    }

    /* Buttons stack in page-actions */
    .page-actions {
        flex-direction: column;
    }
    .page-actions .btn {
        width: 100%;
    }

    /* Modal body gets smaller padding */
    .modal-body {
        padding: 14px;
    }

    /* Brand heading in sidebar */
    .sidebar-brand h2 {
        font-size: 0.95rem;
    }
}

/* --- Activity Timeline --- */
.activity-timeline {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 400px;
    overflow-y: auto;
    padding: 4px;
}

.activity-item {
    display: flex;
    gap: 12px;
    padding: 10px 12px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-primary);
}

.activity-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
    width: 28px;
    text-align: center;
}

.activity-body {
    flex: 1;
    min-width: 0;
}

.activity-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 2px;
    flex-wrap: wrap;
}

.activity-description {
    font-size: 0.85rem;
    line-height: 1.4;
    color: var(--color-text);
    white-space: pre-wrap;
    word-break: break-word;
}

/* --- Queue Cards (Work Queue) --- */
.queue-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.queue-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition);
    color: var(--color-text-secondary);
}

.queue-tab:hover {
    border-color: var(--color-primary);
    color: var(--color-text);
}

.queue-tab.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.queue-tab .queue-count {
    background: rgba(255, 255, 255, 0.25);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.queue-tab:not(.active) .queue-count {
    background: var(--color-bg);
    color: var(--color-text-secondary);
}

.queue-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
}

.queue-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.queue-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 6px;
}

.queue-item-title {
    font-weight: 600;
    font-size: 0.95rem;
}

.queue-item-meta {
    display: flex;
    gap: 12px;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    flex-wrap: wrap;
}

.queue-item-reason {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-top: 4px;
    padding-top: 4px;
    border-top: 1px dashed var(--color-border);
}

.queue-item-actions {
    display: flex;
    gap: 6px;
    margin-top: 8px;
}

.queue-item.priority-high {
    border-left: 4px solid var(--color-danger);
}

.queue-item.priority-normal {
    border-left: 4px solid var(--color-info);
}

.queue-item.priority-low {
    border-left: 4px solid var(--color-border-dark);
}

/* --- Global search --- */
.global-search {
    position: relative;
    margin-bottom: 8px;
}

.global-search input {
    width: 100%;
    padding: 8px 12px 8px 32px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    font-size: 0.85rem;
}

.global-search::before {
    content: '🔍';
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.85rem;
}

.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-height: 400px;
    overflow-y: auto;
    z-index: 200;
    margin-top: 4px;
}

.search-result-group {
    padding: 4px 0;
}

.search-result-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    padding: 6px 12px;
    font-weight: 600;
}

.search-result-item {
    padding: 8px 12px;
    cursor: pointer;
    font-size: 0.85rem;
    border-bottom: 1px solid var(--color-border);
}

.search-result-item:hover {
    background: var(--color-bg);
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item .text-muted {
    font-size: 0.75rem;
}

/* --- Utilization bar --- */
.util-bar {
    width: 100%;
    height: 8px;
    background: var(--color-bg);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-top: 4px;
}

.util-bar-fill {
    height: 100%;
    transition: width 0.3s ease;
    background: var(--color-success);
}

.util-bar-fill.util-warning { background: var(--color-warning); }
.util-bar-fill.util-danger { background: var(--color-danger); }

/* --- Denial categories --- */
.denial-category {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--color-danger-light);
    color: var(--color-danger);
}

/* --- Kanban board --- */
.kanban-board {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.kanban-column {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: 12px;
    min-height: 300px;
}

.kanban-column-header {
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.kanban-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 10px;
    margin-bottom: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all var(--transition);
}

.kanban-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}