html {
    background: #e9eef4;
}

body {
    font-family: Georgia, "Times New Roman", Times, serif;
    margin: 0;
    padding: 0;
    line-height: 1.5;
    color: #1a1a1a;
    background: #e9eef4;
}

/* ---- top navbar ---- */

header.topnav {
    background: #163a5f;
    padding: 0.9em 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.15);
}

header.topnav .navwrap {
    max-width: 850px;
    margin: 0 auto;
    padding: 0 2em;
}

header.topnav a {
    color: #f0f4fa;
    text-decoration: none;
    font-weight: bold;
    margin-right: 1.8em;
    font-family: Georgia, "Times New Roman", Times, serif;
    letter-spacing: 0.02em;
}

header.topnav a:visited {
    color: #f0f4fa;
}

header.topnav a:hover {
    text-decoration: underline;
}

/* ---- page content card ---- */

.page {
    max-width: 850px;
    margin: 2.2em auto 3em auto;
    padding: 2em 2.5em 2.5em 2.5em;
    background: #fffefb;
    border: 1px solid #d8dfe8;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

h1 {
    font-size: 1.7em;
    margin-bottom: 0.1em;
    color: #111;
}

h2 {
    font-size: 1.3em;
    margin-top: 1.7em;
    color: #111;
    border-bottom: 2px solid #dce6f0;
    padding-bottom: 0.25em;
}

h3 {
    font-size: 1.05em;
    margin-bottom: 0.3em;
    color: #111;
}

a {
    color: #1a5fa8;
}

a:visited {
    color: #6a3d9a;
}

.subtitle {
    color: #555;
    margin-top: 0;
}

.quicklinks {
    margin: 1em 0;
    padding: 0.8em 1.2em;
    background: #eaf1fa;
    border: 1px solid #c9dbee;
    border-radius: 6px;
}

.quicklinks a {
    margin-right: 1.5em;
    font-weight: bold;
}

table {
    border-collapse: collapse;
    width: 100%;
    margin: 1em 0 2em 0;
    font-size: 0.95em;
}

th, td {
    border: 1px solid #d3dae3;
    padding: 0.45em 0.65em;
    text-align: left;
    vertical-align: top;
}

th {
    background: #dce6f0;
    color: #163a5f;
}

tr:nth-child(even) {
    background: #f5f8fb;
}

.unit-row {
    background: #cfe0f0 !important;
    font-weight: bold;
    color: #163a5f;
}

.exam-row {
    background: #f6dede !important;
    font-weight: bold;
}

.holiday-row {
    background: #eee !important;
    font-style: italic;
    color: #666;
}

footer {
    margin-top: 3em;
    padding-top: 1em;
    border-top: 1px solid #d3dae3;
    font-size: 0.85em;
    color: #777;
}

.todo {
    color: #b00;
    font-weight: bold;
}

.staff-table img {
    width: 90px;
    height: 90px;
    object-fit: cover;
    display: block;
    margin: 0 auto 0.3em auto;
    background: #ddd;
    border-radius: 4px;
}

.staff-table td {
    text-align: center;
}

.blurb {
    background: #eaf1fa;
    border: 1px solid #c9dbee;
    border-radius: 6px;
    padding: 0.8em 1.2em;
    margin: 1em 0;
}

iframe.calendar {
    border: 1px solid #c9dbee;
    border-radius: 6px;
    width: 100%;
    max-width: 800px;
    height: 500px;
}

/* ---- lecture schedule table ---- */

.schedule .c-date  { width: 9%; }
.schedule .c-topic { width: 39%; }
.schedule .c-read  { width: 26%; }
.schedule .c-hw    { width: 18%; }
.schedule .c-rec   { width: 8%; }

.schedule td { word-break: normal; overflow-wrap: break-word; }

.schedule tr:not(.unit-row) td:first-child { white-space: nowrap; }

.book-key ul {
    margin: 0.4em 0;
    padding-left: 1.4em;
}

.book-key li {
    margin: 0.15em 0;
}

.book-key {
    font-size: 0.9em;
    color: #444;
    margin: 0.5em 0 1em 0;
}

/* ---- staff / recitation table ---- */

.staff-table .no-photo {
    width: 90px;
    height: 90px;
    margin: 0 auto 0.3em auto;
    background: #e4e9f0;
    border: 1px dashed #b9c6d6;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8em;
    color: #7a8798;
    text-align: center;
}

.staff-table .sec-name {
    font-weight: bold;
    vertical-align: middle;
    white-space: nowrap;
}

.staff-table .sec-time {
    vertical-align: middle;
    white-space: nowrap;
}

.staff-table .sec-room {
    vertical-align: middle;
}

/* ---- pigeonhole image ---- */

.php-img {
    float: right;
    width: 170px;
    max-width: 40%;
    margin: 0.2em 0 0.6em 1.8em;
}

.page h1 {
    margin-top: 0;
}

/* table must not slide under the floated image */
.course-info {
    clear: right;
}

@media (max-width: 600px) {
    .php-img {
        float: none;
        display: block;
        max-width: 60%;
        margin: 0 auto 1em auto;
    }
}

.ta-email {
    font-size: 0.82em;
    word-break: break-all;
}