/* =================================================================
   UrbanPulse Data Lab Guide
   Brand stylesheet
   ================================================================= */

:root {
    /* Data Lab palette (purple primary) */
    --ms-purple-900: #2d1b54;
    --ms-purple-800: #3c2178;
    --ms-purple-700: #4f29a3;
    --ms-purple-600: #6033cc;
    --ms-purple-500: #7c52e6;
    --ms-purple-100: #ede4fb;
    --ms-purple-50:  #f7f2ff;

    /* Microsoft Fabric accent */
    --fabric-teal: #0078d4;
    --fabric-teal-dark: #005a9e;
    --fabric-cyan: #00b7c3;

    /* Status colors */
    --success: #107c10;
    --warning: #f7630c;
    --danger:  #d13438;
    --info:    #0078d4;

    /* Neutrals */
    --gray-900: #1f1f1f;
    --gray-800: #323130;
    --gray-700: #605e5c;
    --gray-600: #8a8886;
    --gray-300: #d2d0ce;
    --gray-200: #edebe9;
    --gray-100: #faf9f8;
    --gray-50:  #fdfcfb;
    --white:    #ffffff;

    /* Type scale */
    --font-sans: "Segoe UI", "Segoe UI Variable", -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "Cascadia Code", "Cascadia Mono", "Consolas", "Courier New", monospace;

    /* Layout */
    --content-max: 1600px;
    --radius: 8px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 2px 8px rgba(45, 27, 84, 0.08), 0 4px 16px rgba(45, 27, 84, 0.06);
    --shadow-lg: 0 8px 24px rgba(45, 27, 84, 0.12), 0 16px 48px rgba(45, 27, 84, 0.10);
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-900);
    background: var(--gray-50);
    -webkit-font-smoothing: antialiased;
}

/* ---------- Header bar ---------- */
.site-header {
    background: linear-gradient(135deg, var(--ms-purple-800) 0%, var(--ms-purple-600) 100%);
    color: var(--white);
    padding: 16px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header .brand {
    display: flex;
    align-items: center;
    gap: 16px;
}

.site-header .ms-logo {
    width: 110px;
    height: auto;
}

.site-header .event-title {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    opacity: 0.95;
}

.site-header .event-subtitle {
    font-size: 11px;
    font-weight: 400;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.site-header .module-pill {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
}

/* ---------- Page layout ---------- */
.page-wrap {
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 48px 48px 96px;
}

.page-wrap.wide {
    max-width: 100%;
}

/* ---------- Module hero ---------- */
.module-hero {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px 48px;
    margin-bottom: 32px;
    box-shadow: var(--shadow-sm);
    border-left: 6px solid var(--ms-purple-600);
}

.module-hero .module-eyebrow {
    color: var(--ms-purple-700);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 8px;
}

.module-hero h1 {
    margin: 0 0 12px;
    font-size: 36px;
    font-weight: 600;
    color: var(--ms-purple-900);
    line-height: 1.2;
}

.module-hero .lead {
    font-size: 18px;
    color: var(--gray-700);
    margin: 0;
    line-height: 1.5;
}

.module-meta {
    display: flex;
    gap: 24px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--gray-200);
    flex-wrap: wrap;
}

.module-meta .meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--gray-700);
}

.module-meta .meta-item strong {
    color: var(--gray-900);
    font-weight: 600;
}

.module-meta .meta-icon {
    color: var(--ms-purple-600);
    font-size: 18px;
}

/* ---------- Section ---------- */
section { margin-bottom: 40px; }

h2 {
    font-size: 26px;
    font-weight: 600;
    color: var(--ms-purple-800);
    margin: 48px 0 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--ms-purple-100);
}

h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--gray-900);
    margin: 32px 0 12px;
}

h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--ms-purple-700);
    margin: 24px 0 8px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

p { margin: 0 0 16px; }

ul, ol { padding-left: 24px; margin: 0 0 16px; }
li { margin-bottom: 8px; }

a {
    color: var(--fabric-teal);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.15s ease;
}
a:hover { border-bottom-color: var(--fabric-teal); }

/* ---------- Code ---------- */
code {
    font-family: var(--font-mono);
    font-size: 0.92em;
    background: var(--gray-100);
    color: var(--ms-purple-800);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid var(--gray-200);
}

pre {
    font-family: var(--font-mono);
    font-size: 13.5px;
    line-height: 1.6;
    background: var(--gray-900);
    color: #e6e6e6;
    padding: 18px 22px;
    border-radius: var(--radius);
    overflow-x: auto;
    margin: 16px 0 24px;
    box-shadow: var(--shadow-sm);
}

pre code {
    background: none;
    color: inherit;
    padding: 0;
    border: none;
    font-size: inherit;
}

/* Language badge on code blocks */
.code-block {
    position: relative;
    margin: 16px 0 24px;
}
.code-block .lang-badge {
    position: absolute;
    top: 10px;
    right: 12px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    background: rgba(124, 82, 230, 0.25);
    color: #d4c5fa;
    padding: 3px 10px;
    border-radius: 4px;
    font-family: var(--font-sans);
    font-weight: 600;
}
.code-block pre { margin: 0; }

/* Copy button on code blocks */
.code-block .copy-btn {
    position: absolute;
    top: 38px;
    right: 12px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    background: rgba(255, 255, 255, 0.08);
    color: #d4c5fa;
    border: 1px solid rgba(212, 197, 250, 0.35);
    padding: 4px 10px;
    border-radius: 4px;
    font-family: var(--font-sans);
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.code-block .copy-btn:hover {
    background: rgba(124, 82, 230, 0.35);
    color: #fff;
    border-color: rgba(212, 197, 250, 0.7);
}
.code-block .copy-btn.copied {
    background: rgba(76, 175, 80, 0.25);
    color: #c5f0c8;
    border-color: rgba(197, 240, 200, 0.5);
}
.code-block .copy-btn .copy-icon { font-size: 12px; }
@media print {
    .code-block .copy-btn { display: none; }
}

/* ---------- Tables ---------- */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 14px;
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

thead { background: var(--ms-purple-50); }

th {
    text-align: left;
    padding: 12px 16px;
    font-weight: 600;
    color: var(--ms-purple-800);
    border-bottom: 2px solid var(--ms-purple-100);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--gray-200);
    vertical-align: top;
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--gray-50); }

/* ---------- Steps ---------- */
.step-list {
    counter-reset: step-counter;
    list-style: none;
    padding: 0;
    margin: 24px 0;
}

.step-list > li {
    counter-increment: step-counter;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 20px 24px 20px 76px;
    margin-bottom: 16px;
    position: relative;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.15s ease;
}

.step-list > li:hover { box-shadow: var(--shadow-md); }

.step-list > li::before {
    content: counter(step-counter);
    position: absolute;
    left: 20px;
    top: 18px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--ms-purple-700), var(--ms-purple-500));
    color: var(--white);
    font-weight: 700;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(124, 82, 230, 0.3);
}

.step-list .step-title {
    font-weight: 600;
    font-size: 17px;
    color: var(--gray-900);
    margin: 0 0 8px;
}

.step-list .step-body { color: var(--gray-800); }
.step-list .step-body p:last-child { margin-bottom: 0; }

/* ---------- Callout boxes ---------- */
.callout {
    border-radius: var(--radius);
    padding: 16px 20px;
    margin: 20px 0;
    display: flex;
    gap: 14px;
    align-items: flex-start;
    border-left: 4px solid;
    font-size: 15px;
}

.callout .callout-icon {
    font-size: 20px;
    line-height: 1.4;
    flex-shrink: 0;
}

.callout .callout-content { flex: 1; }
.callout .callout-content p:last-child { margin-bottom: 0; }
.callout .callout-content strong { font-weight: 600; }

.callout.info {
    background: #eff6fc;
    border-color: var(--info);
    color: #053e64;
}
.callout.info .callout-icon { color: var(--info); }

.callout.tip {
    background: #f3f9f1;
    border-color: var(--success);
    color: #0b4509;
}
.callout.tip .callout-icon { color: var(--success); }

.callout.warning {
    background: #fff8f0;
    border-color: var(--warning);
    color: #6e3403;
}
.callout.warning .callout-icon { color: var(--warning); }

.callout.danger {
    background: #fdf3f4;
    border-color: var(--danger);
    color: #6e1b1d;
}
.callout.danger .callout-icon { color: var(--danger); }

.callout.purple {
    background: var(--ms-purple-50);
    border-color: var(--ms-purple-600);
    color: var(--ms-purple-900);
}
.callout.purple .callout-icon { color: var(--ms-purple-700); }

/* ---------- Validation block ---------- */
.validation {
    background: linear-gradient(135deg, #f3f9f1 0%, #ebf6e8 100%);
    border: 1px solid #b6dca8;
    border-radius: var(--radius);
    padding: 20px 24px;
    margin: 24px 0;
}
.validation h4 {
    color: var(--success);
    margin-top: 0;
}
.validation h4::before {
    content: "✓ ";
    font-weight: 900;
}

/* ---------- Screenshot frame ---------- */
.screenshot {
    margin: 24px 0;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
    background: var(--white);
}

.screenshot img {
    width: 100%;
    display: block;
}

.screenshot .caption {
    padding: 12px 18px;
    background: var(--gray-100);
    font-size: 13px;
    color: var(--gray-700);
    border-top: 1px solid var(--gray-200);
}

.screenshot.placeholder .placeholder-body {
    aspect-ratio: 16 / 9;
    background: repeating-linear-gradient(
        45deg,
        var(--ms-purple-50),
        var(--ms-purple-50) 10px,
        var(--white) 10px,
        var(--white) 20px
    );
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 10px;
    color: var(--ms-purple-700);
    text-align: center;
    padding: 24px;
}

.screenshot.placeholder .placeholder-body .ph-icon {
    font-size: 40px;
    opacity: 0.6;
}

.screenshot.placeholder .placeholder-body .ph-title {
    font-weight: 600;
    font-size: 16px;
}

.screenshot.placeholder .placeholder-body .ph-meta {
    font-size: 12px;
    color: var(--gray-700);
    font-family: var(--font-mono);
    background: rgba(255, 255, 255, 0.8);
    padding: 4px 10px;
    border-radius: 4px;
}

/* ---------- Architecture diagram frame ---------- */
.diagram {
    margin: 28px 0;
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    text-align: center;
}

.diagram img, .diagram svg { max-width: 100%; height: auto; }

.diagram .caption {
    margin-top: 16px;
    font-size: 13px;
    color: var(--gray-700);
    font-style: italic;
}

/* ---------- Pills / badges ---------- */
.pill {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    background: var(--ms-purple-100);
    color: var(--ms-purple-800);
    margin-right: 6px;
}

.pill.lakehouse { background: #e1f3fa; color: #003e6b; }
.pill.warehouse { background: #fef0e8; color: #6e3403; }
.pill.eventhouse { background: #f0e8fb; color: var(--ms-purple-800); }
.pill.eventstream { background: #e6f8ee; color: #0b4509; }
.pill.kql { background: #fff4ce; color: #614a00; }
.pill.notebook { background: #fde7f3; color: #621441; }
.pill.agent { background: linear-gradient(90deg, #ede4fb, #c8e1f7); color: var(--ms-purple-900); }
.pill.report { background: #fef0e8; color: #6e3403; }

/* ---------- Module nav (footer) ---------- */
.module-nav {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-top: 64px;
    padding-top: 32px;
    border-top: 2px solid var(--ms-purple-100);
}

.nav-card {
    flex: 1;
    background: var(--white);
    padding: 20px 24px;
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    text-decoration: none;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

.nav-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--ms-purple-500);
    border-bottom-color: var(--ms-purple-500);
}

.nav-card.next { text-align: right; }

.nav-card .nav-direction {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-700);
    margin-bottom: 4px;
}

.nav-card .nav-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--ms-purple-800);
}

.nav-card.placeholder {
    opacity: 0.4;
    pointer-events: none;
}

/* ---------- Cover page specific ---------- */
.cover {
    min-height: calc(100vh - 80px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 64px 48px;
    margin-left: var(--lab-nav-width, 0px);
    background: linear-gradient(135deg, var(--ms-purple-50) 0%, var(--white) 60%);
}

.cover .cover-eyebrow {
    color: var(--ms-purple-700);
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    margin-bottom: 16px;
}

.cover h1 {
    font-size: 56px;
    line-height: 1.1;
    color: var(--ms-purple-900);
    max-width: 1100px;
    margin: 0 0 24px;
    font-weight: 600;
}

.cover .cover-tagline {
    font-size: 22px;
    color: var(--gray-700);
    max-width: 900px;
    margin: 0 0 48px;
    line-height: 1.5;
}

.cover-meta {
    display: flex;
    gap: 40px;
    margin-bottom: 48px;
    flex-wrap: wrap;
    justify-content: center;
}

.cover-meta .meta-block {
    text-align: center;
}

.cover-meta .meta-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--ms-purple-700);
    margin-bottom: 6px;
    font-weight: 600;
}

.cover-meta .meta-value {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
}

/* Module cards on cover */
.module-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    width: 100%;
    max-width: 1400px;
    margin-top: 32px;
}

.module-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px 24px 20px;
    box-shadow: var(--shadow-sm);
    border-top: 4px solid var(--ms-purple-500);
    text-decoration: none;
    text-align: left;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    gap: 8px;
    color: inherit;
}

.module-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-bottom-color: transparent;
}

.module-card .mc-number {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--ms-purple-700);
    font-weight: 600;
    letter-spacing: 0.1em;
}

.module-card .mc-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--ms-purple-900);
    margin: 0;
}

.module-card .mc-desc {
    font-size: 14px;
    color: var(--gray-700);
    line-height: 1.45;
    flex: 1;
}

.module-card .mc-time {
    font-size: 12px;
    color: var(--gray-700);
    margin-top: 8px;
    padding-top: 12px;
    border-top: 1px solid var(--gray-200);
}

.module-card .mc-time strong { color: var(--ms-purple-800); }

/* Goal tag inside each card */
.module-card .mc-goals {
    margin-top: 8px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.module-card .mc-goal-tag {
    display: inline-block;
    padding: 3px 10px;
    background: var(--ms-purple-50);
    color: var(--ms-purple-800);
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.02em;
}
.module-card.optional {
    border-top-style: dashed;
    border-top-color: var(--gray-300);
}
.module-card.optional .mc-number {
    color: var(--gray-700);
}
.module-card.hidden-by-goal {
    display: none;
}

/* Download links in data-downloads appendix */
.download-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    background: var(--ms-purple-50);
    color: var(--ms-purple-800);
    border: 1px solid var(--ms-purple-100);
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.15s ease;
}
.download-link:hover {
    background: var(--ms-purple-700);
    color: var(--white);
    border-color: var(--ms-purple-700);
    text-decoration: none;
}

/* Bundle download card on data-downloads appendix */
.bundle-card {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 24px 28px;
    margin: 24px 0 8px;
    border-radius: var(--radius);
    background: linear-gradient(135deg, var(--ms-purple-700), var(--ms-purple-900));
    color: var(--white);
    box-shadow: var(--shadow-lg);
    flex-wrap: wrap;
}
.bundle-card .bundle-text {
    flex: 1 1 320px;
    min-width: 280px;
}
.bundle-card h2 {
    margin: 0 0 6px;
    color: var(--white);
    border: none;
    padding: 0;
    font-size: 22px;
}
.bundle-card p {
    margin: 0 0 4px;
    color: rgba(255,255,255,0.92);
    font-size: 14px;
    line-height: 1.5;
}
.bundle-card .bundle-meta {
    margin-top: 6px;
    font-size: 12px;
    color: rgba(255,255,255,0.75);
    font-family: var(--font-mono);
}
.bundle-card .bundle-meta code {
    background: rgba(255,255,255,0.12);
    color: var(--white);
    padding: 1px 6px;
    border-radius: 4px;
}
.bundle-download {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 22px;
    border-radius: 999px;
    background: var(--white);
    color: var(--ms-purple-800);
    font-size: 15px;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 4px 14px rgba(0,0,0,0.18);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    white-space: nowrap;
}
.bundle-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.25);
    text-decoration: none;
}
.bundle-download-icon {
    font-size: 18px;
    line-height: 1;
}

.bundle-details {
    margin: 16px 0 24px;
    border-top: 1px solid var(--gray-200);
    padding-top: 12px;
}
.bundle-details > summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--ms-purple-800);
    padding: 8px 0;
    list-style: none;
    user-select: none;
}
.bundle-details > summary::-webkit-details-marker { display: none; }
.bundle-details > summary::before {
    content: "▸ ";
    display: inline-block;
    transition: transform 0.15s ease;
    margin-right: 4px;
    color: var(--ms-purple-700);
}
.bundle-details[open] > summary::before {
    transform: rotate(90deg);
}

/* Use case overview on home */
.use-case {
    width: 100%;
    max-width: 1400px;
    margin: 40px 0 8px;
    padding: 28px 32px;
    background: linear-gradient(135deg, var(--ms-purple-50) 0%, var(--white) 70%);
    border: 1px solid var(--ms-purple-100);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}
.use-case-heading {
    font-size: 22px;
    font-weight: 700;
    color: var(--ms-purple-900);
    margin: 0 0 12px;
    border: none;
    text-align: left;
}
.use-case-lead {
    font-size: 15px;
    color: var(--gray-800);
    line-height: 1.55;
    margin: 0 0 20px;
}
.use-case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
    margin: 16px 0 20px;
}
.use-case-card {
    background: var(--white);
    border: 1px solid var(--ms-purple-100);
    border-left: 3px solid var(--ms-purple-500);
    border-radius: var(--radius);
    padding: 18px 20px;
    box-shadow: var(--shadow-sm);
}
.use-case-card .uc-icon {
    font-size: 22px;
    margin-bottom: 6px;
}
.use-case-card .uc-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--ms-purple-900);
    margin: 0 0 6px;
}
.use-case-card .uc-desc {
    font-size: 13.5px;
    color: var(--gray-700);
    line-height: 1.5;
    margin: 0;
}
.use-case-summary {
    font-size: 14px;
    color: var(--gray-800);
    line-height: 1.55;
    margin: 4px 0 0;
}

/* Goals filter section */
.goals-section {
    width: 100%;
    max-width: 1400px;
    margin: 32px 0 8px;
}
.goals-heading {
    font-size: 18px;
    font-weight: 600;
    color: var(--ms-purple-900);
    margin: 0 0 12px;
    border: none;
    text-align: left;
}
.goal-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.goal-pill {
    appearance: none;
    border: 1.5px solid var(--ms-purple-100);
    background: var(--white);
    color: var(--ms-purple-800);
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.15s ease;
    box-shadow: var(--shadow-sm);
}
.goal-pill:hover {
    border-color: var(--ms-purple-500);
    color: var(--ms-purple-900);
    transform: translateY(-1px);
}
.goal-pill.active {
    background: var(--ms-purple-700);
    color: var(--white);
    border-color: var(--ms-purple-700);
    box-shadow: 0 2px 8px rgba(79, 41, 163, 0.25);
}
.goal-pill .gp-num {
    font-family: var(--font-mono);
    font-size: 11px;
    background: var(--ms-purple-50);
    color: var(--ms-purple-800);
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 700;
    letter-spacing: 0.05em;
}
.goal-pill.active .gp-num {
    background: rgba(255,255,255,0.18);
    color: var(--white);
}
.goal-pill .gp-tag {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    padding: 1px 6px;
    margin-left: 4px;
}
.goal-pill.active .gp-tag {
    color: var(--white);
    border-color: rgba(255,255,255,0.5);
}
.goal-pill.optional {
    border-style: dashed;
}

/* ---------- Goal-based color coding (cards + pills) ---------- */
/* Setup (M0, M1) keeps the default purple top border (--ms-purple-500). */

/* Goal 1 · Ingest -> Fabric blue */
.module-card[data-goals~="ingest"]              { border-top-color: var(--fabric-teal); }
.module-card[data-goals~="ingest"] .mc-number   { color: var(--fabric-teal); }
.module-card[data-goals~="ingest"] .mc-goal-tag { background: rgba(0, 120, 212, 0.10); color: var(--fabric-teal); }
.goal-pill[data-goal="ingest"] .gp-num          { background: rgba(0, 120, 212, 0.12); color: var(--fabric-teal); }

/* Goal 2 · Transform -> warm orange */
.module-card[data-goals~="transform"]              { border-top-color: var(--warning); }
.module-card[data-goals~="transform"] .mc-number   { color: var(--warning); }
.module-card[data-goals~="transform"] .mc-goal-tag { background: rgba(247, 99, 12, 0.10); color: var(--warning); }
.goal-pill[data-goal="transform"] .gp-num          { background: rgba(247, 99, 12, 0.14); color: var(--warning); }

/* Goal 3 · Build Report -> Fabric cyan */
.module-card[data-goals~="report"]              { border-top-color: var(--fabric-cyan); }
.module-card[data-goals~="report"] .mc-number   { color: #008a93; }
.module-card[data-goals~="report"] .mc-goal-tag { background: rgba(0, 183, 195, 0.12); color: #008a93; }
.goal-pill[data-goal="report"] .gp-num          { background: rgba(0, 183, 195, 0.16); color: #008a93; }

/* Goal 4 · Apply AI -> Microsoft green */
.module-card[data-goals~="ai"]              { border-top-color: var(--success); }
.module-card[data-goals~="ai"] .mc-number   { color: var(--success); }
.module-card[data-goals~="ai"] .mc-goal-tag { background: rgba(16, 124, 16, 0.10); color: var(--success); }
.goal-pill[data-goal="ai"] .gp-num          { background: rgba(16, 124, 16, 0.14); color: var(--success); }

/* When a goal pill is active, override the gp-num so it stays readable on the
   purple-filled active background. */
.goal-pill.active .gp-num {
    background: rgba(255, 255, 255, 0.18) !important;
    color: var(--white) !important;
}

/* Optional cards keep the dashed border but inherit the goal color above. */
.module-card.optional { border-top-style: dashed; }

/* Domain accent - Smart City scenario (kept for back-compat where used) */
.module-card.health      { border-top-color: #d13438; }
.module-card.transit     { border-top-color: var(--fabric-teal); }
.module-card.airspace    { border-top-color: var(--fabric-cyan); }

/* ---------- Two column ---------- */
.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin: 24px 0;
}
@media (max-width: 720px) {
    .two-col { grid-template-columns: 1fr; }
}

/* ---------- Domain stripe (Module 5 etc.) ---------- */
.domain-block {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border-left: 6px solid var(--ms-purple-600);
    padding: 24px 28px;
    margin: 24px 0;
}
.domain-block.health { border-left-color: #d13438; }
.domain-block.transit { border-left-color: var(--fabric-teal); }
.domain-block.airspace { border-left-color: var(--fabric-cyan); }

.domain-block .domain-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-weight: 700;
    margin-bottom: 4px;
}
.domain-block.health .domain-label { color: #d13438; }
.domain-block.transit .domain-label { color: var(--fabric-teal-dark); }
.domain-block.airspace .domain-label { color: #006e76; }

.domain-block h3 { margin-top: 0; }

/* ---------- Footer ---------- */
.site-footer {
    background: var(--ms-purple-900);
    color: rgba(255, 255, 255, 0.75);
    padding: 32px;
    text-align: center;
    font-size: 13px;
    margin-top: 64px;
}
.site-footer a { color: #d4c5fa; }
.site-footer .footer-brand { font-weight: 600; color: var(--white); }

/* ---------- Print / PDF rules ---------- */
@media print {
    @page {
        margin: 16mm 14mm 18mm 14mm;
    }

    body {
        background: var(--white) !important;
        color: var(--gray-900);
        font-size: 11pt;
    }

    .site-header {
        position: static;
        box-shadow: none;
        background: var(--ms-purple-800) !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
        padding: 10px 16px;
    }

    .page-wrap {
        max-width: 100%;
        padding: 16px 0 0;
    }

    .module-hero {
        box-shadow: none;
        border: 1px solid var(--gray-300);
        page-break-inside: avoid;
    }

    h1 { page-break-after: avoid; }
    h2 { page-break-after: avoid; page-break-before: auto; }
    h3, h4 { page-break-after: avoid; }
    pre, table, .callout, .step-list > li, .screenshot, .diagram, .validation {
        page-break-inside: avoid;
    }

    .step-list > li { box-shadow: none; }

    .module-nav, .site-footer { display: none; }

    a { color: var(--ms-purple-800); border: none; }
    a[href^="http"]:after {
        content: " (" attr(href) ")";
        font-size: 9pt;
        color: var(--gray-700);
    }

    pre {
        background: #f4f4f4 !important;
        color: #1f1f1f !important;
        border: 1px solid var(--gray-300);
        font-size: 9.5pt;
    }

    .pill, .module-meta .meta-icon {
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    /* hide the sidebar in print */
    .lab-nav, .lab-nav-toggle { display: none !important; }
    body.has-lab-nav .page-wrap { margin-left: auto !important; }
}

/* All-modules combined view */
body.combined .module-section {
    page-break-before: always;
}
body.combined .module-section:first-of-type {
    page-break-before: auto;
}

/* =============================================================
   Lab navigation sidebar (injected by print.js on every page)
   ============================================================= */
:root {
    --lab-nav-width: 260px;
}

.lab-nav {
    position: fixed;
    top: 64px; /* below sticky header */
    left: 0;
    width: var(--lab-nav-width);
    height: calc(100vh - 64px);
    overflow-y: auto;
    background: var(--white);
    border-right: 1px solid var(--gray-200);
    padding: 24px 16px 32px;
    z-index: 90;
    box-shadow: 1px 0 0 rgba(45, 27, 84, 0.04);
}

.lab-nav-header {
    padding: 0 8px 16px;
    border-bottom: 1px solid var(--gray-200);
    margin-bottom: 16px;
}

.lab-nav-eyebrow {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ms-purple-700);
}

.lab-nav-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    margin-top: 2px;
}

.lab-nav-group {
    margin-bottom: 18px;
}

.lab-nav-group-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--gray-600);
    padding: 0 8px 8px;
}

.lab-nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 6px;
    text-decoration: none;
    color: var(--gray-800);
    font-size: 13.5px;
    line-height: 1.35;
    border: 1px solid transparent;
    margin-bottom: 2px;
    transition: background 0.12s, color 0.12s, border-color 0.12s;
}

.lab-nav-link:hover {
    background: var(--ms-purple-50);
    color: var(--ms-purple-700);
}

.lab-nav-link.active {
    background: var(--ms-purple-100);
    color: var(--ms-purple-700);
    border-color: var(--ms-purple-500);
    font-weight: 600;
}

.lab-nav-badge {
    flex-shrink: 0;
    width: 28px;
    height: 22px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    font-family: var(--font-mono);
    font-size: 10.5px;
    font-weight: 600;
    color: var(--gray-700);
}

.lab-nav-link.active .lab-nav-badge {
    background: var(--ms-purple-600);
    color: var(--white);
    border-color: var(--ms-purple-600);
}

.lab-nav-label {
    flex: 1;
}

/* Shift page content to make room for the sidebar */
body.has-lab-nav .page-wrap {
    margin-left: var(--lab-nav-width);
    max-width: calc(var(--content-max) - var(--lab-nav-width));
}

body.has-lab-nav .site-header,
body.has-lab-nav .site-footer {
    /* header/footer span full width - no change needed */
}

/* Mobile / narrow viewports - sidebar collapses, toggle button appears */
.lab-nav-toggle {
    display: none;
    position: fixed;
    bottom: 20px;
    left: 20px;
    z-index: 110;
    background: var(--ms-purple-700);
    color: var(--white);
    border: none;
    padding: 12px 18px;
    border-radius: 999px;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--shadow-md);
}

.lab-nav-toggle:hover {
    background: var(--ms-purple-600);
}

@media (max-width: 1100px) {
    .lab-nav {
        transform: translateX(-100%);
        transition: transform 0.2s ease;
    }
    body.lab-nav-open .lab-nav {
        transform: translateX(0);
    }
    body.has-lab-nav .page-wrap {
        margin-left: auto;
        max-width: var(--content-max);
    }
    .lab-nav-toggle {
        display: inline-block;
    }
}