/* Office 365 / Word — Fluent Design */
:root {
    --word-blue: #185abd;
    --word-blue-dark: #12407a;
    --word-blue-light: #2b579a;
    --fluent-blue: #0078d4;
    --fluent-blue-hover: #106ebe;
    --bg-app: #f3f2f1;
    --bg-canvas: #ffffff;
    --bg-sidebar: #faf9f8;
    --bg-ribbon: #ffffff;
    --border: #edebe9;
    --border-strong: #c8c6c4;
    --text: #323130;
    --text-secondary: #605e5c;
    --text-muted: #8a8886;
    --success: #107c10;
    --success-bg: #dff6dd;
    --warning: #ca5010;
    --warning-bg: #fff4ce;
    --danger: #a4262c;
    --danger-bg: #fde7e9;
    --info-bg: #deecf9;
    --shadow-sm: 0 1.6px 3.6px rgba(0,0,0,.13), 0 0.3px 0.9px rgba(0,0,0,.11);
    --shadow-md: 0 6.4px 14.4px rgba(0,0,0,.13), 0 1.2px 3.6px rgba(0,0,0,.11);
    --radius: 4px;
    --font: 'Segoe UI', 'Calibri', 'Helvetica Neue', Arial, sans-serif;
    --sidebar-w: 260px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    font-size: 14px;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg-app);
    min-height: 100vh;
}

/* ── Title bar (Word header) ── */
.title-bar {
    background: var(--word-blue);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    height: 48px;
    position: sticky;
    top: 0;
    z-index: 200;
    box-shadow: 0 2px 4px rgba(0,0,0,.2);
}

.title-bar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.word-icon {
    width: 32px;
    height: 32px;
    background: #fff;
    border-radius: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    color: var(--word-blue);
}

.title-bar h1 {
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 0.02em;
}

.title-bar h1 strong {
    font-weight: 600;
}

.title-bar-meta {
    font-size: 12px;
    opacity: 0.85;
}

/* ── Ribbon ── */
.ribbon {
    background: var(--bg-ribbon);
    border-bottom: 1px solid var(--border);
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
    position: sticky;
    top: 48px;
    z-index: 150;
}

.ribbon-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border: none;
    background: transparent;
    font-family: var(--font);
    font-size: 13px;
    color: var(--text);
    border-radius: var(--radius);
    cursor: pointer;
    transition: background .15s;
}

.ribbon-tab:hover { background: var(--bg-app); }

.ribbon-tab.active {
    background: var(--info-bg);
    color: var(--fluent-blue);
    font-weight: 600;
}

.ribbon-sep {
    width: 1px;
    height: 24px;
    background: var(--border);
    margin: 0 8px;
}

.ribbon-action {
    margin-left: auto;
    padding: 6px 14px;
    background: var(--fluent-blue);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-family: var(--font);
    font-size: 13px;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.ribbon-action:hover { background: var(--fluent-blue-hover); }

/* ── Layout ── */
.app-body {
    display: flex;
    min-height: calc(100vh - 96px);
}

/* ── Sidebar (Navigation pane) ── */
.sidebar {
    width: var(--sidebar-w);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    padding: 16px 0;
    flex-shrink: 0;
    overflow-y: auto;
    position: sticky;
    top: 96px;
    height: calc(100vh - 96px);
}

.sidebar-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    padding: 8px 20px 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    color: var(--text);
    text-decoration: none;
    font-size: 13px;
    border-left: 3px solid transparent;
    cursor: pointer;
    transition: all .15s;
}

.nav-item:hover {
    background: #f3f2f1;
    color: var(--fluent-blue);
}

.nav-item.active {
    background: #deecf9;
    border-left-color: var(--fluent-blue);
    color: var(--fluent-blue);
    font-weight: 600;
}

.nav-icon {
    font-size: 16px;
    width: 22px;
    text-align: center;
    flex-shrink: 0;
}

/* ── Document canvas ── */
.document-canvas {
    flex: 1;
    padding: 24px 32px 48px;
    overflow-y: auto;
    display: flex;
    justify-content: center;
}

.document-page {
    background: var(--bg-canvas);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
    width: 100%;
    max-width: 900px;
    min-height: 600px;
    padding: 48px 56px;
}

/* ── Panels (sections) ── */
.panel { display: none; animation: fadeIn .25s ease; }
.panel.active { display: block; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

.doc-title {
    font-size: 28px;
    font-weight: 300;
    color: var(--word-blue-light);
    margin-bottom: 4px;
    font-family: 'Calibri', var(--font);
}

.doc-subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 28px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.section-heading {
    font-size: 16px;
    font-weight: 600;
    color: var(--word-blue-light);
    margin: 28px 0 12px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}

.section-heading:first-child { margin-top: 0; }

p { margin-bottom: 10px; color: var(--text); }
p.lead { font-size: 15px; color: var(--text-secondary); }

/* ── Stat cards ── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
    margin: 20px 0;
}

.stat-card {
    background: var(--bg-sidebar);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    text-align: center;
}

.stat-card .stat-value {
    font-size: 32px;
    font-weight: 300;
    color: var(--fluent-blue);
    line-height: 1;
}

.stat-card .stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 6px;
}

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

/* ── Callout boxes ── */
.callout {
    border-radius: var(--radius);
    padding: 14px 16px;
    margin: 16px 0;
    border-left: 4px solid;
    font-size: 13px;
}

.callout-info    { background: var(--info-bg);    border-color: var(--fluent-blue); }
.callout-success { background: var(--success-bg); border-color: var(--success); }
.callout-warning { background: var(--warning-bg); border-color: var(--warning); }
.callout-danger  { background: var(--danger-bg);  border-color: var(--danger); }

.callout strong { display: block; margin-bottom: 4px; font-size: 13px; }

/* ── Progress bars ── */
.progress-item { margin: 12px 0; }
.progress-header {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    margin-bottom: 4px;
    color: var(--text-secondary);
}
.progress-track {
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    background: var(--fluent-blue);
    border-radius: 4px;
    transition: width .4s ease;
}
.progress-fill.green { background: var(--success); }

/* ── Badges ── */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.badge-ok      { background: var(--success-bg); color: var(--success); }
.badge-no      { background: var(--danger-bg);  color: var(--danger); }
.badge-pending { background: var(--warning-bg); color: var(--warning); }
.badge-info    { background: var(--info-bg);    color: var(--fluent-blue); }

/* ── Tables (Word style) ── */
.table-wrap { overflow-x: auto; margin: 16px 0; }

table.word-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

table.word-table th {
    background: var(--word-blue-light);
    color: #fff;
    font-weight: 600;
    text-align: left;
    padding: 10px 12px;
    border: 1px solid var(--word-blue-dark);
}

table.word-table td {
    padding: 9px 12px;
    border: 1px solid var(--border);
    vertical-align: top;
}

table.word-table tr:nth-child(even) td { background: #f8f8f8; }
table.word-table tr:hover td { background: #eff6fc; }

/* ── File cards ── */
.file-grid {
    display: grid;
    gap: 12px;
    margin: 16px 0;
}

.file-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
    display: flex;
    align-items: flex-start;
    gap: 14px;
    transition: box-shadow .15s;
}

.file-card:hover { box-shadow: var(--shadow-sm); }
.file-card.ok  { border-left: 4px solid var(--success); }
.file-card.bad { border-left: 4px solid var(--danger); }

.file-icon {
    font-size: 28px;
    flex-shrink: 0;
    line-height: 1;
}

.file-info { flex: 1; min-width: 0; }
.file-name {
    font-weight: 600;
    font-size: 13px;
    word-break: break-all;
    margin-bottom: 4px;
}
.file-desc { font-size: 12px; color: var(--text-secondary); }
.file-meta { font-size: 11px; color: var(--text-muted); margin-top: 6px; }

/* ── Step list ── */
.steps { list-style: none; counter-reset: steps; margin: 16px 0; }
.steps li {
    counter-increment: steps;
    display: flex;
    gap: 14px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}
.steps li::before {
    content: counter(steps);
    background: var(--fluent-blue);
    color: #fff;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
    flex-shrink: 0;
}

/* ── Accordion ── */
.accordion { margin: 16px 0; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.accordion summary {
    padding: 12px 16px;
    background: var(--bg-sidebar);
    cursor: pointer;
    font-weight: 600;
    font-size: 13px;
    color: var(--fluent-blue);
    list-style: none;
    display: flex;
    align-items: center;
    gap: 8px;
}
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::before { content: '▶'; font-size: 10px; transition: transform .2s; }
.accordion[open] summary::before { transform: rotate(90deg); }
.accordion .accordion-body {
    padding: 16px;
    font-size: 13px;
    border-top: 1px solid var(--border);
    max-height: 400px;
    overflow-y: auto;
}

/* ── Quote block ── */
.quote-block {
    border-left: 4px solid var(--word-blue-light);
    background: var(--bg-sidebar);
    padding: 16px 20px;
    margin: 16px 0;
    font-style: italic;
    color: var(--text-secondary);
    font-size: 14px;
}

/* ── Code / JSON ── */
.code-block {
    background: #1e1e1e;
    color: #d4d4d4;
    padding: 16px;
    border-radius: var(--radius);
    font-family: 'Cascadia Code', Consolas, monospace;
    font-size: 12px;
    overflow-x: auto;
    margin: 16px 0;
    line-height: 1.6;
}

/* ── Quick nav cards ── */
.quick-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
    margin: 20px 0;
}

.quick-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    cursor: pointer;
    transition: all .15s;
    text-align: center;
    background: #fff;
}

.quick-card:hover {
    border-color: var(--fluent-blue);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.quick-card .qc-icon { font-size: 32px; margin-bottom: 8px; }
.quick-card .qc-title { font-weight: 600; font-size: 13px; color: var(--text); }
.quick-card .qc-desc { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

/* ── Mobile toggle ── */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 22px;
    cursor: pointer;
    padding: 4px 8px;
}

/* ── Footer ── */
.doc-footer {
    margin-top: 40px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    font-size: 11px;
    color: var(--text-muted);
    text-align: center;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .menu-toggle { display: block; }

    .sidebar {
        position: fixed;
        left: -280px;
        top: 96px;
        height: calc(100vh - 96px);
        z-index: 100;
        transition: left .25s;
        box-shadow: var(--shadow-md);
    }

    .sidebar.open { left: 0; }

    .document-canvas { padding: 16px; }
    .document-page { padding: 24px 20px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}