:root {
    --bg: #f4ede0;
    --surface: #fbf6ec;
    --surface-alt: #ece1cb;
    --ink: #2b1f14;
    --ink-muted: #6b5a45;
    --accent: #643a17;
    --accent-hover: #5a3416;
    --border: #c9b89a;
    --ok: #3f6b2f;
    --err: #8a2a2a;

    --serif: Georgia, "Times New Roman", serif;
    --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html,
body {
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1,
h2,
h3,
h4 {
    font-family: var(--serif);
    color: var(--accent);
    margin: 0 0 0.5em 0;
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: 1.9rem;
}

h2 {
    font-size: 1.4rem;
}

h3 {
    font-size: 1.15rem;
}

h4 {
    font-size: 1rem;
}

p {
    margin: 0 0 0.75rem 0;
}

ul,
ol {
    margin: 0 0 0.75rem 0;
    padding-left: 1.25rem;
}

li {
    margin-bottom: 0.25rem;
}

dl {
    margin: 0;
}

img {
    max-width: 100%;
    height: auto;
}

a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color .15s;
}

a:hover {
    color: var(--accent-hover);
}

hr {
    border: 0;
    border-top: 1px solid var(--border);
    margin: 1.5rem 0;
}

/* ---------- Layout ---------- */

.site-header {
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem;
}

.site-header-inner {
    max-width: 1920px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.site-title {
    font-family: var(--serif);
    font-size: 1.25rem;
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
}

.site-title:hover {
    color: var(--accent-hover);
}

.site-nav {
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.25rem 0.5rem;
}

.site-nav .sep {
    color: var(--ink-muted);
}

.site-nav form {
    display: inline;
    margin: 0;
}

main.container {
    width: 100%;
    max-width: 1920px;
    margin: 1.5rem auto;
    padding: 0 1.5rem;
    flex: 1;
}

.breadcrumb {
    font-size: 0.9rem;
    color: var(--ink-muted);
    margin-bottom: 1rem;
}

.breadcrumb .sep {
    color: var(--ink-muted);
    margin: 0 0.25rem;
}

/* ---------- Card ---------- */

.card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 1.25rem;
    margin-bottom: 1.25rem;
}

.card>h2:first-child,
.card>h3:first-child {
    margin-top: 0;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.card-grid .card {
    margin-bottom: 0;
}

.card--danger {
    border-color: var(--err);
}

.card--narrow {
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

/* ---------- Actions ---------- */

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.actions form {
    margin: 0;
}

/* ---------- Buttons ---------- */

.button,
button.button {
    display: inline-block;
    background-color: var(--accent);
    color: var(--surface);
    border: 1px solid var(--accent);
    border-radius: 4px;
    padding: 0.45rem 0.9rem;
    font-family: var(--sans);
    font-size: 0.95rem;
    line-height: 1.2;
    text-decoration: none;
    cursor: pointer;
    transition: background-color .15s, border-color .15s;
}

.button:hover {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
    color: var(--surface);
}

.button--ghost {
    background-color: transparent;
    color: var(--accent);
}

.button--ghost:hover {
    background-color: var(--surface-alt);
    color: var(--accent-hover);
}

.button--danger {
    background-color: var(--err);
    border-color: var(--err);
}

.button--danger:hover {
    background-color: #6f1f1f;
    border-color: #6f1f1f;
}

.button--small {
    padding: 0.25rem 0.55rem;
    font-size: 0.85rem;
}

/* ---------- Forms ---------- */

.form-grid {
    display: grid;
    grid-template-columns: minmax(160px, 1fr) 2fr;
    gap: 0.75rem 1rem;
    align-items: start;
}

.form-grid label {
    color: var(--ink-muted);
    padding-top: 0.4rem;
    font-size: 0.95rem;
}

.form-grid .field,
.form-grid input[type="text"],
.form-grid input[type="email"],
.form-grid input[type="password"],
.form-grid input[type="date"],
.form-grid input[type="number"],
.form-grid select,
.form-grid textarea {
    width: 100%;
}

.form-grid .form-submit {
    grid-column: 1 / -1;
    margin-top: 0.5rem;
}

.form-grid .form-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    padding-top: 0.4rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="number"],
select,
textarea,
.field {
    background-color: var(--surface);
    color: var(--ink);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.4rem 0.55rem;
    font-family: var(--sans);
    font-size: 0.95rem;
    line-height: 1.3;
}

textarea {
    font-family: var(--sans);
    resize: vertical;
    min-height: 5rem;
    width: 100%;
}

input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

label.inline {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--ink);
}

@media (max-width: 640px) {
    .form-grid {
        grid-template-columns: 1fr;
    }

    .form-grid label {
        padding-top: 0;
    }
}

/* ---------- Tables ---------- */

.table-scroll {
    overflow-x: auto;
    margin-bottom: 1rem;
    border: 1px solid var(--border);
    border-radius: 4px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--surface);
    font-size: 0.95rem;
}

.table-scroll .data-table {
    border: 0;
}

.data-table:not(.table-scroll > .data-table) {
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.data-table th,
.data-table td {
    padding: 0.5rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.data-table thead th {
    background-color: var(--surface-alt);
    color: var(--ink);
    font-weight: 600;
    font-family: var(--serif);
}

.data-table tbody tr:nth-child(even) {
    background-color: var(--surface-alt);
}

.data-table tbody tr:hover {
    background-color: #e0d2b6;
}

.data-table tbody tr:last-child td {
    border-bottom: 0;
}

/* ---------- Definition lists ---------- */

.dl-grid {
    display: grid;
    grid-template-columns: minmax(180px, max-content) 1fr;
    gap: 0.4rem 1rem;
}

.dl-grid dt {
    color: var(--ink-muted);
    font-weight: 600;
}

.dl-grid dd {
    margin: 0;
}

.dl-grid dd ul {
    margin: 0;
    padding-left: 1.1rem;
}

@media (max-width: 640px) {
    .dl-grid {
        grid-template-columns: 1fr;
        gap: 0.1rem 0;
    }

    .dl-grid dd {
        margin-bottom: 0.5rem;
    }
}

/* ---------- Alerts ---------- */

.alert {
    border: 1px solid var(--border);
    background-color: var(--surface);
    border-radius: 4px;
    padding: 0.6rem 0.9rem;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.alert--ok {
    border-color: var(--ok);
    color: var(--ok);
    background-color: #eef3e6;
}

.alert--err {
    border-color: var(--err);
    color: var(--err);
    background-color: #f5e6e6;
}

.alert--inline {
    display: block;
    padding: 0.2rem 0;
    border: 0;
    background: transparent;
    margin: 0;
    font-size: 0.85rem;
}

.alert--inline.alert--err {
    color: var(--err);
    background: transparent;
}

/* ---------- Misc ---------- */

.muted {
    color: var(--ink-muted);
}

.list-plain {
    list-style: none;
    padding-left: 0;
}

.list-plain li {
    padding: 0.25rem 0;
    border-bottom: 1px dotted var(--border);
}

.list-plain li:last-child {
    border-bottom: 0;
}

pre {
    background-color: var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.6rem;
    overflow-x: auto;
    font-size: 0.85rem;
    margin: 0;
}

.pgn-box {
    max-height: 12rem;
    max-width: 100%;
    overflow: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

.board {
    width: 400px;
    max-width: 100%;
}

.board-controls {
    margin-top: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    align-items: center;
}

.board-controls button {
    background-color: var(--surface);
    color: var(--ink);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.25rem 0.6rem;
    cursor: pointer;
    font-family: var(--sans);
}

.board-controls button:hover {
    background-color: var(--surface-alt);
}

@media print {
    body {
        background: white;
        color: black;
    }

    .site-header,
    .actions,
    .button {
        display: none;
    }
}