:root {
    --color-bg: #f4f5f7;
    --color-surface: #ffffff;
    --color-surface-alt: #fafbfc;
    --color-border: #d7dce3;
    --color-border-strong: #b5bec9;
    --color-text: #1f2937;
    --color-text-muted: #5b6675;
    --color-text-faint: #8891a0;
    --color-primary: #1e3a5f;
    --color-primary-hover: #162c48;
    --color-primary-soft: #eef2f7;
    --color-success: #15803d;
    --color-success-soft: #e7f4ec;
    --color-danger: #b91c1c;
    --color-danger-soft: #fbeaea;
    --color-warning: #b45309;
    --color-warning-soft: #fdf4e3;

    --radius-sm: 2px;
    --radius: 3px;
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, "SF Mono", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: var(--font-sans);
    font-size: 14px;
    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; }

h1, h2, h3, h4 {
    margin: 0 0 var(--space-3);
    font-weight: 600;
    line-height: 1.25;
}
h1 { font-size: 20px; }
h2 { font-size: 17px; }
h3 { font-size: 15px; }

/* ── Auth page (login) ─────────────────────────────────────────────── */

body.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-5);
}

.auth-card {
    width: 100%;
    max-width: 360px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-6);
}

.auth-header { margin-bottom: var(--space-5); }

.brand {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.3px;
    color: var(--color-primary);
}

.brand-subtitle {
    font-size: 11px;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.9px;
    margin-top: 2px;
}

.auth-form .field { margin-bottom: var(--space-4); }

.auth-form label,
.form-label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    margin-bottom: var(--space-1);
}

input[type="text"],
input[type="password"],
input[type="email"],
textarea,
select {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    font-family: inherit;
    font-size: 14px;
    color: var(--color-text);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-primary-soft);
}

textarea {
    resize: vertical;
    min-height: 160px;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.5;
}

.form-error {
    background: var(--color-danger-soft);
    color: var(--color-danger);
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    margin-bottom: var(--space-3);
    border: 1px solid rgba(185, 28, 28, 0.2);
}

.form-info {
    background: var(--color-primary-soft);
    color: var(--color-primary);
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    margin-bottom: var(--space-3);
}

.auth-footer {
    margin-top: var(--space-5);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border);
    font-size: 12px;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.auth-emergency {
    margin-top: var(--space-3);
    font-size: 11px;
    color: var(--color-text-faint);
}

.auth-notice {
    font-size: 12px;
    color: var(--color-text-muted);
    background: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-3) var(--space-4);
    margin-bottom: var(--space-4);
    line-height: 1.6;
}

/* Microsoft sign-in button */
.btn-ms {
    display: flex !important;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
}
.btn-ms:hover { text-decoration: none; }

.ms-logo {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* "or" divider between SSO button and local form */
.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin: var(--space-5) 0 var(--space-4);
    color: var(--color-text-faint);
    font-size: 12px;
}
.auth-divider::before,
.auth-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

/* ── Buttons ──────────────────────────────────────────────────────── */

.btn {
    display: inline-block;
    padding: 8px 14px;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    color: var(--color-text);
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
}
.btn:hover { background: var(--color-surface-alt); text-decoration: none; }

.btn-primary {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #ffffff;
}
.btn-primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: #ffffff;
}

.btn-danger {
    background: var(--color-surface);
    border-color: var(--color-danger);
    color: var(--color-danger);
}
.btn-danger:hover { background: var(--color-danger-soft); }

.btn-block { display: block; width: 100%; text-align: center; }
.btn-sm { padding: 5px 10px; font-size: 12px; }

.btn-link {
    background: none;
    border: none;
    color: var(--color-primary);
    cursor: pointer;
    padding: 0;
    font: inherit;
    text-decoration: none;
}
.btn-link:hover { text-decoration: underline; }

.inline-form { display: inline; }

/* ── Top bar + shell ──────────────────────────────────────────────── */

.app-topbar {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 0 var(--space-5);
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.topbar-brand { display: flex; align-items: baseline; gap: var(--space-2); }
.brand-mark { font-weight: 700; color: var(--color-primary); letter-spacing: 0.3px; }
.brand-divider { color: var(--color-text-faint); }
.brand-context { color: var(--color-text-muted); font-size: 13px; }

.topbar-user { display: flex; align-items: center; gap: var(--space-3); font-size: 13px; }
.user-name { color: var(--color-text); font-weight: 500; }
.user-role {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--color-text-muted);
    padding: 2px 7px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
}

.app-shell {
    display: grid;
    grid-template-columns: 220px 1fr;
    min-height: calc(100vh - 48px);
}

.sidenav {
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    padding: var(--space-3) 0;
}

.sidenav .nav-item {
    display: block;
    padding: 8px var(--space-5);
    color: var(--color-text);
    font-size: 13px;
    border-left: 2px solid transparent;
}
.sidenav .nav-item:hover {
    background: var(--color-primary-soft);
    text-decoration: none;
}
.sidenav .nav-item.active {
    background: var(--color-primary-soft);
    border-left-color: var(--color-primary);
    color: var(--color-primary);
    font-weight: 600;
}
.sidenav .nav-section {
    padding: var(--space-4) var(--space-5) var(--space-1);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--color-text-faint);
    font-weight: 600;
}

.app-main {
    padding: var(--space-5) var(--space-6);
    max-width: 1280px;
    width: 100%;
}

/* ── Cards + tables ───────────────────────────────────────────────── */

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-5);
    margin-bottom: var(--space-4);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-3);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--color-border);
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-3);
    margin-bottom: var(--space-5);
}

.stat {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-4);
}
.stat-label {
    font-size: 11px;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    margin-bottom: var(--space-1);
}
.stat-value { font-size: 22px; font-weight: 600; color: var(--color-text); }
.stat-sub { font-size: 12px; color: var(--color-text-faint); margin-top: 2px; }

table.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}
.data-table th,
.data-table td {
    padding: 8px 10px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    vertical-align: top;
}
.data-table th {
    background: var(--color-surface-alt);
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-muted);
}
.data-table tbody tr:hover { background: var(--color-primary-soft); }

.mono { font-family: var(--font-mono); font-size: 12.5px; }

/* ── Status chips ─────────────────────────────────────────────────── */

.chip {
    display: inline-block;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 10px;
    border: 1px solid transparent;
}
.chip-pass    { color: var(--color-success); background: var(--color-success-soft); border-color: rgba(21,128,61,0.25); }
.chip-fail    { color: var(--color-danger);  background: var(--color-danger-soft);  border-color: rgba(185,28,28,0.25); }
.chip-warn    { color: var(--color-warning); background: var(--color-warning-soft); border-color: rgba(180,83,9,0.25); }
.chip-neutral { color: var(--color-text-muted); background: var(--color-surface-alt); border-color: var(--color-border); }

/* ── Tabs ─────────────────────────────────────────────────────────── */

.tabs {
    display: flex;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-4);
}
.tab {
    padding: 8px var(--space-4);
    color: var(--color-text-muted);
    font-size: 13px;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    cursor: pointer;
}
.tab:hover { color: var(--color-text); text-decoration: none; }
.tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
    font-weight: 600;
}

/* ── Utility ──────────────────────────────────────────────────────── */

.row-between { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.stack-3 > * + * { margin-top: var(--space-3); }
.stack-4 > * + * { margin-top: var(--space-4); }
.muted { color: var(--color-text-muted); }
.faint { color: var(--color-text-faint); }
.empty-state {
    padding: var(--space-6);
    text-align: center;
    color: var(--color-text-muted);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface-alt);
}

/* ── Form grid + result view ──────────────────────────────────────── */

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.field { display: block; }

pre.note-raw {
    background: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--space-3);
    font-family: var(--font-mono);
    font-size: 12.5px;
    line-height: 1.55;
    white-space: pre-wrap;
    word-wrap: break-word;
    margin: 0;
}

ol.audit-list {
    margin: 0;
    padding-left: var(--space-5);
}
ol.audit-list li {
    padding: 4px 0;
    border-bottom: 1px dotted var(--color-border);
    font-size: 12.5px;
}
ol.audit-list li:last-child { border-bottom: none; }

/* ── Filter bar + pagination ─────────────────────────────────────── */

.filter-bar {
    display: grid;
    grid-template-columns: repeat(5, 1fr) auto;
    gap: var(--space-3);
    align-items: end;
}
.filter-bar .filter-actions {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}

.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--space-3);
    padding: var(--space-3) 0;
    font-size: 13px;
}
.pagination > div { display: flex; gap: var(--space-2); }

/* ── Admin create-user grid ──────────────────────────────────────── */

.create-user-form {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
    align-items: end;
}
.create-user-form .create-user-submit {
    grid-column: span 3;
    display: flex;
    justify-content: flex-end;
}

.action-row {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}
.action-row .inline-form { display: inline-flex; }

/* ── Error page ──────────────────────────────────────────────────── */

.error-page {
    max-width: 520px;
    margin: var(--space-6) auto;
    padding: var(--space-6);
    text-align: center;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}
.error-code {
    font-size: 48px;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -1px;
    margin-bottom: var(--space-2);
}

/* ── Processing page ─────────────────────────────────────────────── */

.processing-card {
    max-width: 560px;
    margin: var(--space-6) auto;
    text-align: center;
}

.processing-spinner-area {
    padding: var(--space-5) 0 var(--space-4);
}

.processing-spinner {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-4);
}

.processing-spinner svg { width: 100%; height: 100%; }

.spin-ring {
    transform-origin: center;
    animation: spin 1.2s linear infinite;
}

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

.processing-label {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.processing-sub {
    font-size: 13px;
    line-height: 1.5;
    max-width: 380px;
    margin: 0 auto var(--space-3);
}

.processing-elapsed {
    font-size: 12px;
}

/* Step progress */

.processing-steps {
    text-align: left;
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-4);
    margin-top: var(--space-3);
}

.step-row {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 6px 0;
    font-size: 13px;
    color: var(--color-text-faint);
    transition: color 0.3s ease;
}

.step-row:has(.step-dot.active) {
    color: var(--color-text);
}

.step-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-border);
    flex-shrink: 0;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.step-dot.active {
    background: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-soft);
}

.step-dot.done {
    background: var(--color-success);
    box-shadow: 0 0 0 3px var(--color-success-soft);
}

.step-dot.error {
    background: var(--color-danger);
    box-shadow: 0 0 0 3px var(--color-danger-soft);
}

.chip-processing {
    color: var(--color-primary);
    background: var(--color-primary-soft);
    border-color: rgba(30, 58, 95, 0.25);
}

/* ── PDF preview panel ───────────────────────────────────────────────── */

.pdf-upload-area {
    position: relative;
    border: 1px dashed var(--color-border-strong);
    border-radius: var(--radius);
    padding: var(--space-3) var(--space-4);
    background: var(--color-surface-alt);
    transition: border-color 0.15s, background 0.15s;
    cursor: pointer;
}
.pdf-upload-area:hover,
.pdf-upload-area.drag-over {
    border-color: var(--color-primary);
    background: var(--color-primary-soft);
}
.pdf-upload-area input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}
.pdf-upload-hint {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    pointer-events: none;
    text-align: center;
    font-size: 13px;
    color: var(--color-text-muted);
    padding: var(--space-2) 0;
}
.pdf-upload-hint .selected-name {
    color: var(--color-primary);
    font-weight: 600;
}

.pdf-preview-panel {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}

.pdf-preview-loading {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--color-surface-alt);
    font-size: 13px;
    color: var(--color-text-muted);
}

.pdf-preview-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    flex-shrink: 0;
}

.pdf-preview-meta-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-4);
    background: var(--color-surface-alt);
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap;
}

.pdf-preview-meta-info {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: 12px;
}
.pdf-preview-filename {
    font-weight: 600;
    color: var(--color-text);
}
.pdf-preview-stats {
    color: var(--color-text-muted);
}

.pdf-ocr-controls {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}
.pdf-ocr-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--color-text-muted);
    cursor: pointer;
    white-space: nowrap;
}
.pdf-ocr-toggle input[type="checkbox"] {
    width: auto;
    margin: 0;
}
.pdf-ocr-toggle.ocr-suggested {
    color: var(--color-warning);
    font-weight: 600;
}

.pdf-low-density-banner {
    padding: 8px var(--space-4);
    background: var(--color-warning-soft);
    color: var(--color-warning);
    font-size: 12px;
    border-bottom: 1px solid rgba(180, 83, 9, 0.2);
}

.pdf-ocr-running {
    padding: 8px var(--space-4);
    background: var(--color-primary-soft);
    color: var(--color-primary);
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    border-bottom: 1px solid rgba(30, 58, 95, 0.15);
}

/* Note metadata bar (below textarea) */
.note-meta-bar {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-top: 4px;
    font-size: 12px;
    min-height: 18px;
}