/* ============================================================
   Design tokens
   One source for the palette, the type stack, the spacing scale,
   and the prose measure. Every colour below this block is a
   var(); add a token rather than a new literal.
   ============================================================ */

:root {
    /* Harvard crimson, plus the tints the callouts and cards use */
    --crimson: #8C1515;
    --crimson-dark: #6E1010;
    --crimson-bright: #A8322E;
    --crimson-050: #FCF6F5;
    --crimson-100: #F5E8E7;
    --crimson-200: #E7CFCE;

    /* Text, from body copy down to the faintest label */
    --ink: #1E2126;
    --ink-2: #3B4147;
    --ink-3: #646A72;
    --ink-4: #8B9199;

    /* Surfaces and rules */
    --bg: #FFFFFF;
    --surface: #F7F8FA;
    --surface-2: #EFF1F4;
    --border: #DEE2E7;
    --border-soft: #E9ECEF;

    /* Accents used by the note callouts */
    --blue: #0B5ED7;
    --blue-050: #EEF4FF;
    --blue-200: #CCDCF7;
    --green: #1E7E38;
    --green-050: #F1F8F3;
    --green-200: #CFE7D6;
    --amber: #B26B00;
    --amber-050: #FDF6E7;
    --amber-200: #F0DDB0;
    --teal: #10707F;
    --teal-050: #EAF6F8;
    --teal-200: #BEE1E7;

    --font-sans: Optima, Candara, Calibri, Arial, sans-serif;
    --font-display: 'Fira Sans', sans-serif;
    --font-mono: "Lucida Console", Monaco, ui-monospace, monospace;

    /* The content column is the page: prose and the wide tables share one
       right edge, so the layout has a single axis. */
    --page-wide: 1200px;

    --s1: 4px;
    --s2: 8px;
    --s3: 12px;
    --s4: 16px;
    --s5: 24px;
    --s6: 32px;
    --s7: 48px;
    --s8: 64px;

    --r-sm: 4px;
    --r: 8px;
    --r-lg: 12px;

    --shadow-1: 0 1px 2px rgba(20, 22, 26, 0.05), 0 1px 3px rgba(20, 22, 26, 0.04);
    --shadow-2: 0 4px 12px -2px rgba(20, 22, 26, 0.09), 0 2px 4px rgba(20, 22, 26, 0.05);
    --shadow-3: 0 14px 32px -12px rgba(140, 21, 21, 0.26);

    /* Bootstrap 5.3 reads these, so its components inherit the type stack
       and the crimson link colour instead of shipping their own. */
    --bs-body-font-family: var(--font-sans);
    --bs-body-color: var(--ink);
    --bs-body-font-size: 1.0625rem;
    --bs-border-color: var(--border);
    --bs-link-color-rgb: 140, 21, 21;
    --bs-link-hover-color-rgb: 168, 50, 46;
    --bs-emphasis-color: var(--ink);
    --bs-heading-color: var(--ink);
}

/* ============================================================
   Base
   ============================================================ */

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 17px;
    line-height: 1.62;
    color: var(--ink);
    background-color: var(--bg);
    margin-top: 0;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    font-feature-settings: "kern" 1;
}

/* The sticky navbar would otherwise cover an in-page anchor target. */
:target {
    scroll-margin-top: 96px;
}

code,
kbd,
samp,
pre {
    font-family: var(--font-mono);
    font-feature-settings: "kern" 0;
}

code {
    font-size: 0.875em;
    color: var(--crimson-dark);
    background-color: var(--crimson-100);
    border-radius: var(--r-sm);
    padding: 0.08em 0.32em;
    word-break: break-word;
}

/* Inside a link, a heading, or a crimson bar, the code chip would fight
   its surroundings, so it drops back to plain monospace. */
a code,
h1 code,
h2 code,
.pass-header code,
.site-footer code {
    color: inherit;
    background: none;
    border: none;
    padding: 0;
}

pre {
    font-size: 14px;
    line-height: 1.55;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: var(--s3) var(--s4);
    overflow-x: auto;
}

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

strong,
b {
    font-weight: 600;
    color: var(--ink);
}

hr {
    height: 0;
    border: 0;
    border-top: 1px solid var(--border);
    opacity: 1;
    margin: var(--s6) 0 0;
}

img {
    max-width: 100%;
}

/* ============================================================
   Links
   Colour alone should not carry the signal, so links inside running
   prose keep a faint underline; navigation, cards, badges and other
   chrome opt out below.
   ============================================================ */

a {
    color: var(--crimson);
    cursor: pointer;
    text-decoration: none;
    transition: color 0.15s ease, text-decoration-color 0.15s ease;
}

a:hover {
    color: var(--crimson-bright);
    text-decoration: underline;
}

p a,
li a,
dd a,
.subsection a,
.lead a {
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-decoration-color: var(--crimson-200);
    text-underline-offset: 0.16em;
}

p a:hover,
li a:hover,
dd a:hover,
.subsection a:hover,
.lead a:hover {
    text-decoration-color: currentColor;
}

/* Chrome: tiles, tabs, badges and nav items are already obviously clickable. */
.note-card a,
.note-card,
.policy-toc a,
.reference-links a,
.note-nav a,
.note-toc a,
.navbar a,
.site-footer a {
    text-decoration: none;
}

:focus-visible {
    outline: 2px solid var(--crimson-bright);
    outline-offset: 2px;
    border-radius: 2px;
}

/* ============================================================
   Headings
   ============================================================ */

h1,
h2,
h3,
h4 {
    text-wrap: balance;
}

h1 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 27px;
    line-height: 1.2;
    letter-spacing: -0.005em;
    margin-bottom: var(--s4);
    color: var(--crimson);
}

h2 {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 20px;
    line-height: 1.3;
    color: var(--ink);
    margin-bottom: var(--s3);
    margin-top: var(--s5);
}

h3 {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 17.5px;
    line-height: 1.35;
    color: var(--ink);
    margin-bottom: var(--s2);
}

h4 {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 16px;
    line-height: 1.4;
    color: var(--ink-2);
    margin-bottom: var(--s2);
}

h5 {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 15px;
    margin-bottom: var(--s1);
    margin-top: 22px;
    color: var(--ink-2);
}

p {
    font-size: 17px;
    margin-bottom: var(--s3);
}

ul,
ol {
    padding-left: 1.35em;
}

li {
    margin-bottom: 5px;
}

li:last-child {
    margin-bottom: 0;
}

li > ul,
li > ol {
    margin-top: 5px;
}



/* ============================================================
   Page shell and masthead
   ============================================================ */

.page {
    max-width: var(--page-wide);
}

.title {
    font-family: var(--font-sans);
    font-size: 38px;
    font-weight: 400;
    line-height: 1.18;
    color: var(--ink);
    text-align: center;
    text-wrap: balance;
    margin-top: var(--s5);
}

.title2 {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 600;
    line-height: 1.3;
    color: var(--crimson);
    text-align: center;
    text-wrap: balance;
    margin: var(--s3) 0 var(--s4);
}

@media (max-width: 575px) {
    .title {
        font-size: 28px;
        margin-top: var(--s4);
    }

    .title2 {
        font-size: 21px;
    }
}

.section {
    margin-top: var(--s6);
    display: block;
}

.subsection {
    margin-top: var(--s4);
    margin-bottom: var(--s5);
}

#overview .subsection {
    margin-bottom: var(--s3);
}

.para-heading-inline {
    font-weight: 600;
    font-size: 16px;
}

/* ============================================================
   Site header
   public/header.html is the only markup for the navbar.
   ============================================================ */

.site-header {
    max-width: var(--page-wide);
}

.site-header nav {
    background-color: var(--crimson) !important;
    border: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    padding: 0;
}

.site-header nav .container-fluid {
    padding-left: 0;
}

.navbar-brand {
    padding: 0 !important;
    margin: 0 !important;
    display: flex;
    align-items: stretch;
}

.seas-logo-header {
    height: 64px;
    width: auto;
    padding: 6px 10px;
    background-color: #fff;
}

.navbar-nav {
    margin-left: auto;
}

.navbar-nav .nav-link {
    font-family: 'Open Sans', sans-serif;
    font-size: 1.1rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.8) !important;
    padding: 16px 16px !important;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.navbar-nav .nav-link:hover {
    color: #fff !important;
    background-color: rgba(255, 255, 255, 0.15);
    text-decoration: none;
}

.navbar-nav .nav-link.active {
    color: #fff !important;
    font-weight: 600;
    background-color: rgba(255, 255, 255, 0.2);
}

.navbar-toggler {
    border-color: rgba(255, 255, 255, 0.4) !important;
}

.navbar-toggler-icon {
    filter: invert(1);
}

.header-spacer {
    height: 24px;
}

/* ============================================================
   Site footer
   ============================================================ */

.site-footer {
    background-color: var(--crimson);
    color: rgba(255, 255, 255, 0.82);
    padding: var(--s5) 0;
    margin-top: var(--s8);
    text-align: center;
    font-size: 14px;
    line-height: 1.6;
}

.site-footer p {
    margin: 0;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.82);
}

.site-footer a {
    color: #fff;
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.4);
    transition: border-color 0.15s ease;
}

.site-footer a:hover {
    color: #fff;
    border-bottom-color: #fff;
    text-decoration: none;
}

.site-footer .footer-copyright {
    margin-top: var(--s2);
    font-size: 12.5px;
    letter-spacing: 0.02em;
    color: rgba(255, 255, 255, 0.6);
}

/* ============================================================
   Tables
   Bootstrap paints rows with an inset box-shadow through these custom
   properties, so tinting a row means overriding them, not
   background-color.
   ============================================================ */

.table {
    --bs-table-border-color: var(--border);
    font-variant-numeric: tabular-nums;
    margin-bottom: 0;
}

.table > thead th {
    font-size: 12.5px;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--ink-3);
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: var(--s3) var(--s3);
    white-space: nowrap;
}

.table > :not(caption) > * > * {
    padding: 10px var(--s3);
}

.table-hover > tbody > tr:hover > *,
.table-hover > tr:hover > * {
    --bs-table-bg-state: var(--crimson-050);
}

.table-responsive {
    border: 1px solid var(--border);
    border-radius: var(--r);
    overflow: auto;
}

/* The rounded wrapper already draws the outer rule. */
.table-responsive > .table-bordered {
    border: 0;
}

.table-responsive > .table > :not(caption) > *:first-child > * {
    border-top: 0;
}

.table-responsive > .table > tr:last-child > *,
.table-responsive > .table > tbody:last-child > tr:last-child > * {
    border-bottom: 0;
}

/* ============================================================
   Announcements
   Used by public/index.html (#announcement). The date is a fixed
   column so the entries line up as a log.
   ============================================================ */

.announce-list {
    list-style: none;
    margin: 0;
    padding: 0;
    max-width: 100%;
}

.announce {
    display: grid;
    grid-template-columns: 104px 1fr;
    gap: 0 var(--s3);
    padding: var(--s3) 0;
    border-top: 1px solid var(--border-soft);
    margin-bottom: 0;
}

.announce:first-child {
    border-top: none;
    padding-top: var(--s1);
}

.announce-date {
    font-size: 12.5px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--crimson);
    padding-top: 0.28em;
    font-variant-numeric: tabular-nums;
}

.announce-body {
    font-size: 17px;
}

@media (max-width: 575px) {
    .announce {
        grid-template-columns: 1fr;
        gap: var(--s1) 0;
    }

    .announce-date {
        padding-top: 0;
    }
}

/* ============================================================
   Key facts
   Used by public/index.html (#overview). The details a student looks
   up repeatedly - when it meets, what it assumes, where it lives -
   read as tiles rather than as more paragraphs.
   ============================================================ */

.facts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--s4);
    margin: var(--s5) 0 var(--s6);
}

.fact {
    background-color: var(--crimson-050);
    border: 1px solid var(--crimson-100);
    border-top: 3px solid var(--crimson);
    border-radius: var(--r);
    padding: var(--s4) var(--s4) var(--s4);
}

.fact-label {
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--crimson);
    margin-bottom: var(--s2);
}

.fact-value {
    font-size: 15.5px;
    line-height: 1.5;
    color: var(--ink-2);
}

.fact-value strong {
    color: var(--ink);
    font-weight: 600;
}

.fact-value .fact-line {
    display: block;
    margin-bottom: 3px;
}

.fact-value .fact-line:last-child {
    margin-bottom: 0;
}

.fact-value .fact-line-label {
    color: var(--ink-3);
}

.fact-value .fact-line-emph {
    font-weight: 600;
    color: var(--crimson);
}


/* ============================================================
   Grade weights
   Used by public/index.html (#overview). The bar is drawn from a
   --w custom property carrying the percentage, so the markup states
   each weight once.
   ============================================================ */

.weights {
    list-style: none;
    margin: var(--s3) 0 var(--s4);
    padding: 0;
    max-width: 100%;
}

.weight {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 96px auto;
    align-items: center;
    gap: 0 var(--s4);
    padding: 7px 0;
    border-bottom: 1px solid var(--border-soft);
    margin-bottom: 0;
    font-size: 16px;
}

.weight:last-child {
    border-bottom: none;
}

.weight-bar {
    height: 7px;
    border-radius: 4px;
    background-color: var(--surface-2);
    overflow: hidden;
}

.weight-bar::before {
    content: "";
    display: block;
    height: 100%;
    /* 20% is the largest single component, so it fills the track. */
    width: calc(var(--w) * 5%);
    background-color: var(--crimson);
    border-radius: 4px;
}

.weight-bonus .weight-bar::before {
    background-color: var(--crimson-200);
}

.weight-value {
    text-align: right;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    color: var(--ink);
}

.weight-name {
    min-width: 0;
}

.weight-note {
    font-size: 14px;
    color: var(--ink-3);
}

.weight-note::before {
    content: "\00b7\00a0";
    color: var(--ink-4);
    margin-left: 0.3em;
}

@media (max-width: 575px) {
    .weight {
        grid-template-columns: minmax(0, 1fr) auto;
        gap: 0 var(--s3);
    }

    .weight-bar {
        display: none;
    }
}

/* ============================================================
   Schedule table
   Used by public/index.html (#schedule).
   ============================================================ */

#schedule .table-responsive {
    max-height: none;
}

#schedule table {
    font-size: 15.5px;
}

#schedule table th:nth-child(2),
#schedule table td:nth-child(2) {
    min-width: 106px;
    width: 106px;
    white-space: nowrap;
    color: var(--ink-2);
}

#schedule table th:nth-child(3),
#schedule table td:nth-child(3) {
    min-width: 168px;
    width: 168px;
}

#schedule table th:nth-child(6),
#schedule table td:nth-child(6) {
    max-width: 200px;
    width: 200px;
}

/* :not([colspan]) so the Part banners and the no-class rows, whose first
   cell spans the table, are not squeezed into the week column. */
#schedule table th:first-child,
#schedule table td:first-child:not([colspan]) {
    width: 56px;
    text-align: center;
    color: var(--ink-3);
}

/* Part banner: a full-width row opening Part I and Part II. */
#schedule tr.table-light > td[colspan="6"] {
    text-align: left;
    --bs-table-bg-type: var(--crimson-100);
    --bs-table-bg-state: var(--crimson-100);
    background-color: var(--crimson-100);
    padding: var(--s3);
    border-top: 2px solid var(--crimson);
}

#schedule tr.table-light > td[colspan="6"] strong {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    color: var(--crimson);
}

#schedule tr.schedule-break td {
    --bs-table-bg-type: var(--surface);
    --bs-table-bg-state: var(--surface);
    background-color: var(--surface);
    color: var(--ink-3);
}

/* Deadlines are the reason the Notes column exists; let them carry weight. */
#schedule td:last-child strong {
    color: var(--crimson);
    font-weight: 600;
}

#schedule td:last-child {
    font-size: 14.5px;
    line-height: 1.45;
}

#schedule table td:nth-child(5) {
    font-size: 14.5px;
    line-height: 1.45;
    color: var(--ink-2);
}

@media (max-width: 991px) {
    #schedule table {
        font-size: 14.5px;
    }
}

/* ============================================================
   FAQ list
   Used by public/policy.html.
   ============================================================ */

.faq-list {
    margin-top: 16px;
}

.faq-item {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.faq-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.faq-item h3 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 19px;
    color: var(--ink);
    margin-bottom: 8px;
    margin-top: 0;
}

.faq-item p {
    font-size: 16px;
    line-height: 1.5;
    color: var(--ink-2);
    margin-bottom: 0;
}

/* Discussion Schedule Styling - Inline Version */
.discussion-schedule-inline {
    margin: 16px 0;
    padding: 16px;
    background-color: var(--surface);
    border-radius: 6px;
    border: 1px solid var(--border-soft);
    overflow-x: auto;
}

.schedule-row {
    display: flex;
    gap: 16px;
    flex-wrap: nowrap;
}

.schedule-cell {
    flex: 1;
    min-width: 160px;
    text-align: center;
    padding: 12px;
    background-color: #fff;
    border: 1px solid var(--border);
    border-radius: 6px;
    transition: all 0.2s ease;
}

.schedule-cell:hover {
    background-color: var(--border-soft);
    border-color: var(--crimson);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.schedule-cell .duration {
    display: block;
    font-weight: 600;
    font-size: 14px;
    color: var(--crimson);
    margin-bottom: 8px;
    padding: 4px 8px;
    background-color: var(--surface);
    border-radius: 4px;
    border: 1px solid var(--crimson);
}

.schedule-cell .activity {
    font-size: 13px;
    line-height: 1.3;
    color: var(--ink);
}

/* Responsive Design for Schedule - Mobile */
@media (max-width: 768px) {
    .discussion-schedule-inline {
        padding: 12px;
    }

    .schedule-row {
        gap: 8px;
    }

    .schedule-cell {
        min-width: 120px;
        padding: 8px;
    }

    .schedule-cell .duration {
        font-size: 12px;
        padding: 3px 6px;
        margin-bottom: 6px;
    }

    .schedule-cell .activity {
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .schedule-cell {
        min-width: 100px;
        padding: 6px;
    }

    .schedule-cell .activity {
        font-size: 11px;
    }
}

/* Lead paragraph styling */
.lead {
    font-size: 18px;
    font-weight: 400;
    line-height: 1.6;
    color: var(--ink-2);
    margin-bottom: 20px;
}

/* Paper Reading Strategy Styling - Compact */
.reading-passes {
    margin: 16px 0;
}

.reading-pass {
    margin-bottom: 16px;
    background-color: #fff;
    border: 1px solid var(--border-soft);
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    transition: all 0.2s ease;
}

.reading-pass:hover {
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    transform: translateY(-1px);
}

.pass-header {
    background: linear-gradient(135deg, var(--crimson), var(--crimson-bright));
    color: white;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
}

.pass-header h3 {
    margin: 0 0 4px 0;
    font-size: 18px;
    font-weight: 600;
    color: white;
}

.pass-goal {
    font-size: 15px;
    font-style: italic;
    opacity: 0.9;
    margin: 0;
}

.pass-content {
    padding: 16px;
}

.pass-content h4 {
    color: var(--crimson);
    font-size: 16px;
    font-weight: 600;
    margin-top: 12px;
    margin-bottom: 8px;
    border-bottom: 1px solid var(--surface);
    padding-bottom: 2px;
}

.pass-content h4:first-child {
    margin-top: 0;
}

.pass-content ul {
    margin-bottom: 12px;
}

.pass-content li {
    margin-bottom: 4px;
    line-height: 1.5;
    font-size: 16px;
}

.tip {
    background-color: var(--amber-050);
    border: 1px solid var(--amber-200);
    border-radius: 4px;
    padding: 10px 12px;
    margin: 12px 0;
    border-left: 3px solid var(--amber);
    font-size: 15px;
}

.tip strong {
    color: var(--amber);
}

.evaluation-lens {
    background-color: var(--teal-050);
    border: 1px solid var(--teal-200);
    border-radius: 4px;
    padding: 10px 12px;
    margin: 12px 0;
    border-left: 3px solid var(--teal);
    font-size: 15px;
}

.evaluation-lens h4 {
    color: var(--teal);
    margin-top: 0;
    border: none;
    padding: 0;
    font-size: 15px;
}

.strategy-summary {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 16px;
    margin-top: 20px;
    border-left: 3px solid var(--green);
}

.strategy-summary p {
    margin: 0 0 12px 0;
    font-size: 16px;
    line-height: 1.5;
}

.strategy-summary strong {
    color: var(--green);
}

.reference-links {
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid var(--border-soft);
}

.reference-links h4 {
    color: var(--crimson);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    border: none;
    padding: 0;
}

.reference-links ul {
    margin: 0;
    padding: 0;
}

.reference-links li {
    margin-bottom: 8px;
    list-style: none;
    padding-left: 0;
}

.reference-links a {
    display: inline-block;
    padding: 6px 12px;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    text-decoration: none;
    color: var(--ink-2);
    transition: all 0.2s ease;
    font-weight: 500;
    font-size: 15px;
}

.reference-links a:hover {
    background-color: var(--crimson);
    color: white;
    border-color: var(--crimson);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(140, 21, 21, 0.3);
}

/* Responsive Design for Reading Strategy - Compact */
@media (max-width: 768px) {
    .pass-header {
        padding: 10px 12px;
    }

    .pass-header h3 {
        font-size: 17px;
    }

    .pass-content {
        padding: 12px;
    }

    .tip, .evaluation-lens {
        padding: 8px 10px;
    }

    .strategy-summary {
        padding: 12px;
    }
}

/* Policy Page Styling */
.policy-toc {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 16px;
    background-color: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: 6px;
}

.policy-toc a {
    display: inline-block;
    padding: 6px 14px;
    background-color: #fff;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    color: var(--ink-2);
    transition: all 0.2s ease;
}

.policy-toc a:hover {
    background-color: var(--crimson);
    color: white;
    border-color: var(--crimson);
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(140, 21, 21, 0.3);
}

.policy-grade-table {
    max-width: 500px;
}

.policy-grade-table td:last-child,
.policy-grade-table th:last-child {
    text-align: right;
    width: 100px;
}

/* Discussion Questions Callout */
.discussion-questions {
    background-color: var(--surface);
    border: 1px solid var(--border-soft);
    border-left: 3px solid var(--crimson);
    border-radius: 6px;
    padding: 16px 20px;
    margin: 16px 0;
}

.discussion-questions h4 {
    color: var(--crimson);
    font-size: 16px;
    font-weight: 600;
    margin-top: 0;
    margin-bottom: 12px;
    border: none;
    padding: 0;
}

.discussion-questions ul {
    margin-bottom: 0;
}

.discussion-questions li {
    margin-bottom: 6px;
    line-height: 1.5;
    font-size: 16px;
}

/* Rubric Table */
.rubric-table {
    font-size: 14px;
}

.rubric-table td,
.rubric-table th {
    vertical-align: top;
}

.rubric-table td.rubric-weight,
.rubric-table th.rubric-weight {
    text-align: center;
    font-weight: 600;
    white-space: nowrap;
    width: 70px;
}

@media (max-width: 768px) {
    .rubric-table {
        font-size: 12px;
    }
}

/* ============================================================
   Lecture Notes
   Used by public/notes/*.html. Generated from notes/*.md.
   ============================================================ */

.note-body {
    max-width: 860px;
}

.note-body p,
.note-body li {
    line-height: 1.65;
}

.note-body h2 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 23px;
    color: var(--crimson);
    margin-top: 34px;
    margin-bottom: 12px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border-soft);
}

.note-body h3 {
    font-weight: 600;
    font-size: 18px;
    color: var(--ink);
    margin-top: 24px;
    margin-bottom: 8px;
}

.note-body table {
    font-size: 15px;
}

/* Date + readings header */
.note-meta {
    background-color: var(--surface);
    border: 1px solid var(--border-soft);
    border-left: 3px solid var(--crimson);
    border-radius: 6px;
    padding: 14px 18px;
    margin: 20px 0 24px;
    font-size: 15px;
}

.note-meta p {
    font-size: 15px;
    margin-bottom: 6px;
}

.note-meta p:last-child {
    margin-bottom: 0;
}

.note-meta ul {
    margin-bottom: 0;
    padding-left: 20px;
}

.note-meta li {
    margin-bottom: 5px;
    font-size: 15px;
}

.badge-required,
.badge-optional {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.4px;
    text-transform: uppercase;
    padding: 1px 7px;
    border-radius: 3px;
    vertical-align: 1px;
    margin-right: 6px;
}

.badge-required {
    background-color: var(--crimson);
    color: #fff;
}

.badge-optional {
    background-color: var(--border-soft);
    color: var(--ink-2);
    border: 1px solid var(--border);
}

/* On-page contents */
.note-toc {
    background-color: #fff;
    border: 1px solid var(--border-soft);
    border-radius: 6px;
    padding: 14px 18px;
    margin: 0 0 24px;
}

.note-toc h4 {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--crimson);
    margin: 0 0 8px;
}

.note-toc ol {
    margin: 0;
    padding-left: 22px;
    font-size: 15px;
    columns: 2;
    column-gap: 28px;
}

.note-toc li {
    margin-bottom: 4px;
    break-inside: avoid;
}

@media (max-width: 700px) {
    .note-toc ol {
        columns: 1;
    }
}

/* Instructor-only block (collapsed by default) */
.instructor-note {
    background-color: var(--crimson-050);
    border: 1px dashed var(--crimson-200);
    border-left: 3px solid var(--crimson);
    border-radius: 6px;
    padding: 0;
    margin: 18px 0;
    font-size: 15px;
}

.instructor-note > summary {
    cursor: pointer;
    padding: 9px 14px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.4px;
    text-transform: uppercase;
    color: var(--crimson);
    list-style: none;
}

.instructor-note > summary::-webkit-details-marker {
    display: none;
}

.instructor-note > summary::before {
    content: "\25B8\00a0\00a0";
    font-size: 11px;
}

.instructor-note[open] > summary::before {
    content: "\25BE\00a0\00a0";
}

.instructor-note > summary:hover {
    color: var(--crimson-bright);
    text-decoration: underline;
}

.instructor-note .instructor-body {
    padding: 0 14px 12px;
}

.instructor-note p {
    font-size: 15px;
    margin-bottom: 7px;
}

.instructor-note ul {
    margin-bottom: 7px;
}

.instructor-note li {
    font-size: 15px;
    margin-bottom: 4px;
    line-height: 1.5;
}

.instructor-note table {
    font-size: 14px;
    background-color: #fff;
}

.instructor-note :last-child {
    margin-bottom: 0;
}

/* Display formula */
.formula {
    font-family: var(--font-mono);
    font-size: 14px;
    background-color: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: 4px;
    padding: 12px 16px;
    margin: 16px 0;
    overflow-x: auto;
    white-space: pre;
    line-height: 1.6;
}

/* Worked back-of-envelope calculation */
.worked {
    background-color: var(--blue-050);
    border: 1px solid var(--blue-200);
    border-left: 3px solid var(--blue);
    border-radius: 4px;
    padding: 12px 16px;
    margin: 18px 0;
    font-size: 16px;
}

.worked h4 {
    color: var(--blue);
    font-size: 15px;
    font-weight: 600;
    margin: 0 0 8px;
}

.worked p,
.worked li {
    font-size: 16px;
    margin-bottom: 6px;
}

.worked .formula {
    background-color: #fff;
    border-color: var(--blue-200);
    margin: 10px 0;
}

.worked :last-child {
    margin-bottom: 0;
}

/* Key takeaways */
.takeaway {
    background-color: var(--green-050);
    border: 1px solid var(--green-200);
    border-left: 3px solid var(--green);
    border-radius: 6px;
    padding: 14px 18px;
    margin: 18px 0;
}

.takeaway p,
.takeaway li {
    font-size: 16px;
    line-height: 1.55;
    margin-bottom: 8px;
}

.takeaway :last-child {
    margin-bottom: 0;
}

/* Self-check questions */
.selfcheck {
    background-color: var(--surface);
    border: 1px solid var(--border-soft);
    border-left: 3px solid var(--crimson);
    border-radius: 6px;
    padding: 14px 18px;
    margin: 18px 0;
}

.selfcheck ol {
    margin-bottom: 0;
    padding-left: 22px;
}

.selfcheck li {
    font-size: 16px;
    line-height: 1.55;
    margin-bottom: 12px;
}

.selfcheck li:last-child {
    margin-bottom: 0;
}

.selfcheck .answer {
    display: block;
    margin-top: 4px;
    font-size: 15px;
    color: var(--ink-2);
}

.selfcheck .answer strong {
    color: var(--crimson);
}

/* Prev / next navigation */
.note-nav {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 32px;
    padding-top: 16px;
    border-top: 1px solid var(--border-soft);
}

.note-nav a {
    display: inline-block;
    padding: 8px 14px;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--ink-2);
    font-size: 15px;
    font-weight: 500;
    transition: all 0.2s ease;
    max-width: 46%;
}

.note-nav a:hover {
    background-color: var(--crimson);
    color: #fff;
    border-color: var(--crimson);
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(140, 21, 21, 0.3);
}

.note-nav .nav-spacer {
    flex: 1;
}

@media (max-width: 600px) {
    .note-nav a {
        max-width: 100%;
    }
}

/* Notes index page */
.notes-list {
    margin-top: 8px;
}

.note-card {
    display: block;
    background-color: #fff;
    border: 1px solid var(--border-soft);
    border-left: 3px solid var(--crimson);
    border-radius: 6px;
    padding: 14px 18px;
    margin-bottom: 12px;
    color: inherit;
    transition: all 0.2s ease;
}

.note-card:hover {
    color: inherit;
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
    transform: translateY(-1px);
    border-left-color: var(--crimson-bright);
}

.note-card .note-card-label {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--crimson);
}

.note-card .note-card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin: 2px 0 4px;
}

.note-card .note-card-summary {
    font-size: 15px;
    color: var(--ink-2);
    line-height: 1.5;
    margin: 0;
}

/* Assignments: the five parts of one system, laid out as a path */
.notes-grid {
    counter-reset: assign;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    column-gap: 32px;
    /* Keep row-gap and the down-arrows' `bottom` in step: the arrow is 16px tall and
       sits in this gap, so bottom = -(row-gap + 16) / 2 centers it. */
    row-gap: 36px;
}

.notes-grid .note-card {
    position: relative;
    counter-increment: assign;
    display: flex;
    flex-direction: column;
    margin-bottom: 0;
    padding: 22px 24px 20px;
    background: var(--crimson-050);
    border: 1px solid var(--crimson-100);
    border-top: 3px solid var(--crimson);
    border-radius: 10px;
    color: inherit;
    text-decoration: none;
    transition: transform 0.25s cubic-bezier(0.2, 0.7, 0.3, 1),
                box-shadow 0.25s ease,
                background-color 0.25s ease,
                border-color 0.25s ease;
}

.notes-grid .note-card:hover {
    color: inherit;
    text-decoration: none;
    background: var(--crimson-100);
    border-color: var(--crimson-200);
    border-top-color: var(--crimson-bright);
    box-shadow: 0 12px 28px -10px rgba(140, 21, 21, 0.28);
    transform: translateY(-2px);
}

/* Ghost index numeral ("01" - "05") in the top-right corner */
.notes-grid .note-card::before {
    content: counter(assign, decimal-leading-zero);
    position: absolute;
    top: 6px;
    right: 14px;
    font-size: 54px;
    font-weight: 300;
    line-height: 1;
    letter-spacing: -0.02em;
    color: rgba(140, 21, 21, 0.09);
    pointer-events: none;
}

/* Keep the tile text above the ghost numeral */
.notes-grid .note-card > * {
    position: relative;
    z-index: 1;
}

#assignment-1 {
    grid-column: 1 / -1;
}

.notes-grid .note-card-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--crimson);
}

.notes-grid .note-card-title {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.25;
    color: var(--ink);
    margin: 8px 0 8px;
    max-width: 82%;
}

.notes-grid .note-card-summary {
    font-size: 15px;
    line-height: 1.55;
    color: var(--ink-2);
    flex-grow: 1;
    margin: 0;
}

/* Order arrows between the tiles */
#assignment-1::after {
    content: "\2193";
    position: absolute;
    bottom: -26px;
    left: 50%;
    margin-left: -8px;
    color: var(--crimson);
    font-size: 16px;
    font-weight: 700;
    line-height: 1;
}

#assignment-2::after {
    content: "\2192";
    position: absolute;
    top: 50%;
    right: -21px;
    margin-top: -8px;
    color: var(--crimson);
    font-size: 16px;
    font-weight: 700;
    line-height: 1;
}

#assignment-3::after {
    content: "\2193";
    position: absolute;
    bottom: -26px;
    left: -21px;
    color: var(--crimson);
    font-size: 16px;
    font-weight: 700;
    line-height: 1;
}

#assignment-4::after {
    content: "\2192";
    position: absolute;
    top: 50%;
    right: -21px;
    margin-top: -8px;
    color: var(--crimson);
    font-size: 16px;
    font-weight: 700;
    line-height: 1;
}

@media (max-width: 620px) {
    .notes-grid {
        grid-template-columns: 1fr;
    }

    .notes-grid .note-card {
        padding: 18px 20px 16px;
    }

    .notes-grid .note-card::before {
        font-size: 42px;
    }

    #assignment-2::after,
    #assignment-3::after,
    #assignment-4::after {
        content: none;
    }
}

/* Tile grid without the ghost index numerals (computing environments) */
.notes-grid-plain .note-card::before {
    content: none;
}

.notes-grid-plain .note-card-title {
    max-width: 100%;
}

/* Print: drop chrome, expand instructor blocks, show link targets */
@media print {
    .site-header,
    .site-footer,
    .note-nav,
    .note-toc {
        display: none !important;
    }

    body {
        margin-top: 0;
    }

    .note-body {
        max-width: none;
    }

    .instructor-note {
        break-inside: avoid;
    }

    .instructor-note > summary {
        list-style: none;
    }

    .worked,
    .takeaway,
    .selfcheck,
    .formula,
    table {
        break-inside: avoid;
    }

    .note-body h2 {
        break-after: avoid;
    }
}

/* ============================================================
   Readings
   Used by public/readings.html.
   ============================================================ */

.badge-extra {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.4px;
    text-transform: uppercase;
    padding: 1px 7px;
    border-radius: 3px;
    vertical-align: 1px;
    margin-right: 6px;
    background-color: #fff;
    color: var(--ink-3);
    border: 1px dashed var(--border);
}

.readings-table {
    font-size: 15px;
}

.readings-table td,
.readings-table th {
    vertical-align: top;
}

.readings-table th:nth-child(2),
.readings-table td:nth-child(2) {
    width: 62px;
    min-width: 62px;
    text-align: center;
    color: var(--ink-3);
}

.readings-table th:nth-child(3),
.readings-table td:nth-child(3) {
    width: 46%;
    color: var(--ink);
}

.readings-table td:first-child {
    min-width: 250px;
}

/* Topic group header inside a meeting's reading table. The custom properties
   are how Bootstrap 5.3 paints row backgrounds (an inset box-shadow), so they
   have to be overridden rather than `background-color`. */
.readings-table tr.reading-topic > th {
    --bs-table-bg-type: var(--crimson-100);
    --bs-table-bg-state: var(--crimson-100);
    background-color: var(--crimson-100);
    padding-top: 9px;
    padding-bottom: 9px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--crimson);
}

.overview-table {
    font-size: 15px;
}

.overview-table td,
.overview-table th {
    vertical-align: top;
}

.overview-table th:first-child,
.overview-table td:first-child {
    width: 26%;
}

.overview-table th:nth-child(2),
.overview-table td:nth-child(2) {
    width: 26%;
}

.overview-table tr.overview-meeting > td {
    border-top: 2px solid var(--crimson);
}

.overview-table .overview-none {
    color: var(--ink-3);
}

.reading-led {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.3px;
    text-transform: uppercase;
    color: var(--crimson);
    border: 1px solid var(--crimson-200);
    border-radius: 3px;
    padding: 0 5px;
    margin-left: 6px;
    white-space: nowrap;
}

#part-1 .subsection,
#part-2 .subsection,
#part-3 .subsection,
#not-scheduled .subsection {
    scroll-margin-top: 90px;
}

/* One class meeting per block, separated hard from the next. `.reading-more`
   is a continuation of the meeting above it, so it gets a lighter rule. */
.reading-meeting {
    margin-top: 0;
    margin-bottom: 0;
    padding-top: 40px;
    padding-bottom: 16px;
    border-top: 3px solid var(--crimson-200);
}

.section > .reading-meeting:first-of-type {
    padding-top: 8px;
    border-top: none;
}

.reading-more {
    margin-top: 0;
    margin-bottom: 0;
    padding-top: 24px;
    padding-bottom: 16px;
}

.reading-more > h2 {
    font-style: italic;
}

.reading-date {
    display: inline-block;
    min-width: 74px;
    color: var(--crimson);
    font-variant-numeric: tabular-nums;
}

.reading-date::after {
    content: "\00b7";
    color: var(--ink-4);
    margin-left: 8px;
}

.reading-notes {
    font-size: 14px;
    margin-top: -6px;
}

.reading-also {
    display: inline-block;
    font-size: 12px;
    line-height: 1.5;
    color: var(--ink-3);
    white-space: normal;
}

@media (max-width: 767px) {
    .readings-table {
        font-size: 14px;
    }

    .overview-table {
        font-size: 14px;
    }

    .reading-meeting {
        padding-top: 28px;
    }
}

/* ============================================================
   Staff photos
   Used by public/index.html (#staff).
   ============================================================ */

.staff-list {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    margin: 8px 0 20px;
}

.staff-card {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 220px;
}

.staff-photo {
    width: 84px;
    height: 84px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border-soft);
    flex-shrink: 0;
}

.staff-name {
    font-size: 16px;
    font-weight: 600;
}

.staff-name a {
    color: var(--ink);
}

.staff-name a:hover {
    color: var(--crimson);
}

.staff-role {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.4px;
    text-transform: uppercase;
    color: var(--crimson);
    margin-top: 2px;
}

@media (max-width: 480px) {
    .staff-card {
        min-width: 100%;
    }
}

.sponsor-logos {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: center;
    gap: 30px 36px;
    margin: 26px 0 22px;
}

.sponsor {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    flex: 0 1 240px;
    max-width: 280px;
}

.sponsor-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 56px;
    width: 100%;
}

/* The anchor is the flex item, not the image. Its height is auto, so a
   percentage max-height on the image inside it resolves to none and the
   mark overflows; every cap below is therefore absolute. */
.sponsor-mark a {
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 100%;
    height: 100%;
}

.sponsor-mark img {
    max-height: 56px;
    max-width: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    /* Sponsor marks arrive at unrelated optical weights; the per-sponsor
       overrides below bring them to a common visual size. */
}

.sponsor-fas .sponsor-mark img {
    max-height: 50px;
}

.sponsor-aws .sponsor-mark img {
    max-height: 46px;
}

.sponsor-madsys .sponsor-mark img {
    max-height: 54px;
}

.sponsor-blurb {
    font-size: 14px;
    line-height: 1.5;
    color: var(--ink-2);
    margin: 12px 0 0;
}

.sponsor-blurb a {
    color: var(--crimson);
}

@media (max-width: 575px) {
    .sponsor-logos {
        gap: 26px;
    }

    .sponsor {
        flex-basis: 100%;
    }
}

/* ============================================================
   Staff cards
   Overrides the plain photo-and-name row above with a card, so the
   three staff read as one group.
   ============================================================ */

.staff-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(258px, 1fr));
    gap: var(--s4);
    margin: var(--s5) 0 var(--s5);
}

.staff-card {
    display: flex;
    align-items: center;
    gap: var(--s4);
    min-width: 0;
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: var(--s3) var(--s4);
    box-shadow: var(--shadow-1);
}

.staff-photo {
    width: 62px;
    height: 62px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--crimson-100);
    flex-shrink: 0;
}

.staff-name {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.3;
}

.staff-name a {
    color: var(--ink);
    text-decoration: none;
}

.staff-name a:hover {
    color: var(--crimson);
    text-decoration: underline;
}

.staff-role {
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--crimson);
    margin-top: 3px;
}

/* ============================================================
   Sponsors
   ============================================================ */

.sponsor-logos {
    gap: var(--s6) var(--s6);
    margin: var(--s6) 0 var(--s5);
}

.sponsor-blurb {
    font-size: 14px;
    line-height: 1.5;
    color: var(--ink-3);
    margin: var(--s3) 0 0;
}

.sponsor-blurb a {
    color: var(--crimson);
}

/* ============================================================
   Reduced motion
   Every hover lift and transition on this site is decoration, so it
   all comes off when the visitor asks for less movement.
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }

    .schedule-cell:hover,
    .reading-pass:hover,
    .reference-links a:hover,
    .policy-toc a:hover,
    .note-nav a:hover,
    .note-card:hover,
    .notes-grid .note-card:hover {
        transform: none;
    }
}

/* ============================================================
   Section headings on pages that open with h2
   public/index.html and the computing pages open each section with
   an h1; public/policy.html, public/discussion.html and the meeting
   blocks in public/readings.html open with an h2. The selectors here
   are narrow on purpose: an h2 sitting under an h1 in the same
   section is a subheading and must keep the plain h2 style.
   ============================================================ */

.section > h2:first-child,
#policy > .subsection > h2,
.reading-meeting > h2,
.reading-more > h2 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 23px;
    line-height: 1.22;
    letter-spacing: -0.005em;
    color: var(--crimson);
    margin-top: 0;
    margin-bottom: var(--s3);
}


/* ============================================================
   Width
   Text, bordered callouts and data tables all span the content
   column, so the page reads on one right edge.
   ============================================================ */

/* Every bordered block spans the column, so the page has one right edge. */
pre,
.formula,
.tip,
.evaluation-lens,
.strategy-summary,
.discussion-questions,
.reading-passes,
.reference-links,
.faq-list,
.policy-toc,
.announce-list,
.weights,
.staff-list,
.policy-grade-table {
    max-width: 100%;
}