@font-face {
    font-family: 'JetBrains Mono';
    src: url('/fonts/jetbrains-mono/JetBrainsMono-Regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'JetBrains Mono';
    src: url('/fonts/jetbrains-mono/JetBrainsMono-SemiBold.woff2') format('woff2');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'JetBrains Mono';
    src: url('/fonts/jetbrains-mono/JetBrainsMono-Bold.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'IBM Plex Sans';
    src: url('/fonts/ibm-plex-sans/IBMPlexSans-Regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'IBM Plex Sans';
    src: url('/fonts/ibm-plex-sans/IBMPlexSans-Medium.woff2') format('woff2');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'IBM Plex Sans';
    src: url('/fonts/ibm-plex-sans/IBMPlexSans-SemiBold.woff2') format('woff2');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

:root {
    color-scheme: dark;

    --desk-bg: #0c0f12;
    --desk-surface: #14181c;
    --desk-surface-2: #1c2126;
    --desk-border: #242a30;
    --desk-text: #e4e9ec;

    /* The quietest text colour allowed: 6.53:1 on the page, 6.06 on a card. */
    --desk-text-dim: #8b98a5;

    --desk-accent: #f2a93b;
    --desk-accent-hover: #f7c069;
    --desk-accent-active: #d99323;
    --desk-accent-ink: #14100a;

    --desk-win: #2fbf71;
    /* The app's lightened red for small text (5.5:1 on the page). */
    --desk-loss-text: #ed696c;

    --font-body: 'IBM Plex Sans', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
    margin: 0;
}

body {
    display: flex;
    flex-direction: column;
    background-color: var(--desk-bg);
    color: var(--desk-text);
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.55;
}

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

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

h1, h2, h3 {
    font-family: var(--font-mono);
    letter-spacing: -0.01em;
}

code {
    font-family: var(--font-mono);
    font-size: 0.85em;
    padding: 0.1em 0.35em;
    background: var(--desk-surface-2);
    border: 1px solid var(--desk-border);
    border-radius: 4px;
}

.page {
    flex: 1 0 auto;
    width: 100%;
    max-width: 38rem;
    margin: 0 auto;
    padding: 3rem 1.25rem 2rem;
}

.masthead {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.mark {
    border-radius: 9px;
}

h1 {
    margin: 0;
    font-size: 2rem;
    font-weight: 700;
}

.lede {
    margin: 1.25rem 0 0.75rem;
    font-size: 1.1rem;
}

.facts {
    margin: 0 0 2rem;
    padding-left: 1.1rem;
    color: var(--desk-text-dim);
    font-size: 0.92rem;
}

.facts li + li {
    margin-top: 0.25rem;
}

/* ---------- card ---------- */

.card {
    background: var(--desk-surface);
    border: 1px solid var(--desk-border);
    border-radius: 10px;
    padding: 1.1rem 1.25rem 1.25rem;
}

.card-title {
    margin: 0 0 0.75rem;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--desk-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.intro {
    margin: 0 0 1.25rem;
    font-size: 0.92rem;
    color: var(--desk-text-dim);
}

/* ---------- form ---------- */

.field {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.3rem;
    color: var(--desk-text-dim);
    font-size: 0.85rem;
    font-weight: 500;
}

.optional {
    font-weight: 400;
}

input[type="text"],
input[type="email"],
select,
textarea {
    display: block;
    width: 100%;
    padding: 0.5rem 0.7rem;
    background-color: var(--desk-surface);
    color: var(--desk-text);
    border: 1px solid var(--desk-border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.9rem;
    line-height: 1.5;
}

textarea {
    resize: vertical;
}

select {
    padding-right: 1.75rem;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--desk-accent);
    box-shadow: 0 0 0 0.25rem rgba(242, 169, 59, 0.25);
}

input[aria-invalid="true"],
select[aria-invalid="true"],
textarea[aria-invalid="true"] {
    border-color: var(--desk-loss-text);
}

.hint {
    margin: 0.3rem 0 0;
    color: var(--desk-text-dim);
    font-size: 0.78rem;
}

.field-error {
    margin: 0.3rem 0 0;
    color: var(--desk-loss-text);
    font-size: 0.82rem;
}

.field-error:empty {
    display: none;
}

.hp {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.status {
    margin: 0 0 1rem;
    padding: 0.65rem 0.85rem;
    border: 1px solid rgba(237, 105, 108, 0.45);
    border-radius: 6px;
    background: rgba(237, 105, 108, 0.1);
    color: var(--desk-text);
    font-size: 0.9rem;
}

.btn {
    padding: 0.5rem 1rem;
    background: var(--desk-accent);
    color: var(--desk-accent-ink);
    border: 1px solid var(--desk-accent);
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
}

.btn:hover {
    background: var(--desk-accent-hover);
    border-color: var(--desk-accent-hover);
}

.btn:active {
    background: var(--desk-accent-active);
    border-color: var(--desk-accent-active);
}

.btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 0.25rem rgba(242, 169, 59, 0.35);
}

.btn:disabled {
    opacity: 0.65;
    cursor: default;
}

.privacy {
    margin: 1rem 0 0;
    color: var(--desk-text-dim);
    font-size: 0.78rem;
}

.success {
    padding: 0.85rem 1rem;
    border: 1px solid rgba(47, 191, 113, 0.45);
    border-radius: 6px;
    background: rgba(47, 191, 113, 0.1);
}

.success h3 {
    margin: 0 0 0.35rem;
    font-size: 1rem;
    color: var(--desk-win);
}

.success p {
    margin: 0;
    font-size: 0.92rem;
}

/* ---------- footer ---------- */

.footer {
    flex-shrink: 0;
    padding: 1rem 1.25rem;
    color: var(--desk-text-dim);
    font-size: 0.8rem;
    text-align: center;
    border-top: 1px solid var(--desk-border);
}

[hidden] {
    display: none !important;
}

@media (max-width: 30rem) {
    .page {
        padding-top: 2rem;
    }
}