:root {
    --ink: #0d0f12;
    --panel: #12161c;
    --panel-alt: #10141a;
    --panel-raised: #171c24;
    --sheet: #0f1217;
    --line: #2a313b;
    --line-strong: #3b4450;
    --line-soft: rgba(255, 255, 255, 0.07);
    --text: #ebe7dd;
    --muted: #9aa4b2;
    --amber: #f59709;
    --amber-bright: #ffb43a;
    --amber-tint: rgba(245, 151, 9, 0.1);
    --measure: #7fb4d6;
    --measure-tint: rgba(127, 180, 214, 0.1);
    --focus: #ddc32e;
    --success: #8fd4a8;
    --danger: #f0a0a0;
    --on-accent: #0d0f12;
    --control-bg: #15181d;
    --control-border: #454b55;
    --placeholder: #7d8693;
    --nav-bg: rgba(13, 15, 18, 0.94);
    --footer-bg: #0a0c0f;
    --grid-small: rgba(255, 255, 255, 0.035);
    --panel-glass: rgba(13, 15, 18, 0.88);
    --surface-faint: rgba(255, 255, 255, 0.03);
    --on-accent-muted: rgba(13, 15, 18, 0.75);
    --danger-bg: #34272b;
    --danger-border: #985c5c;
    --danger-solid: #a53b3b;
    --success-bg: #183323;
    --success-border: #2f6b43;
    --font-display: "Bahnschrift", "Segoe UI Variable Display", "Segoe UI", system-ui, sans-serif;
    --font-body: system-ui, -apple-system, "Segoe UI", sans-serif;
    --font-mono: ui-monospace, "Cascadia Mono", "SF Mono", Consolas, monospace;
    --radius: 3px;
    --nav-height: 72px;
}

:root[data-theme="light"] {
    color-scheme: light;
    --ink: #f3f0e8;
    --panel: #fffcf6;
    --panel-alt: #ede8dc;
    --panel-raised: #f7f1e5;
    --sheet: #e8e1d3;
    --line: #c7c0b3;
    --line-strong: #a8a092;
    --line-soft: rgba(32, 42, 51, 0.13);
    --text: #202a33;
    --muted: #596571;
    --amber: #965500;
    --amber-bright: #784300;
    --amber-tint: rgba(150, 85, 0, 0.1);
    --measure: #285f7b;
    --measure-tint: rgba(40, 95, 123, 0.1);
    --focus: #805500;
    --success: #17633d;
    --danger: #a33238;
    --on-accent: #fffaf0;
    --control-bg: #fffdf8;
    --control-border: #a8a092;
    --placeholder: #66717a;
    --nav-bg: rgba(243, 240, 232, 0.96);
    --footer-bg: #e8e1d3;
    --grid-small: rgba(32, 42, 51, 0.055);
    --panel-glass: rgba(255, 252, 246, 0.9);
    --surface-faint: rgba(32, 42, 51, 0.035);
    --on-accent-muted: rgba(255, 250, 240, 0.86);
    --danger-bg: #f9e9e7;
    --danger-border: #c47676;
    --danger-solid: #a33238;
    --success-bg: #e6f4e9;
    --success-border: #6ba581;
}

* {
    box-sizing: border-box;
}

html {
    color-scheme: dark;
    background-color: var(--ink);
}

body {
    min-height: 100vh;
    margin: 0;
    background-color: var(--ink);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.6;
}

main {
    min-height: calc(100vh - var(--nav-height));
}

[hidden] {
    display: none !important;
}

:where(a, button, input, select, textarea, summary):focus-visible {
    outline: 2px solid var(--focus);
    outline-offset: 3px;
}

/* Keep this text available to screen readers. */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

.site-message {
    width: min(1200px, 100% - 32px);
    margin: 20px auto 0;
    padding: 12px 16px;
    border: 1px solid var(--line-strong);
    border-left: 3px solid var(--measure);
    background: var(--panel);
    color: var(--text);
}

input,
select,
textarea {
    background-color: var(--control-bg);
    color: var(--text);
    border: 1px solid var(--control-border);
    border-radius: var(--radius);
    font: inherit;
}

input::placeholder,
textarea::placeholder {
    color: var(--placeholder);
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--amber);
    outline: 2px solid rgba(245, 151, 9, 0.35);
    outline-offset: 0;
}

.wrap {
    width: min(1200px, 100% - 2 * clamp(20px, 5vw, 48px));
    margin-inline: auto;
}

.sheet-tag {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 0 0 1.2rem;
    color: var(--measure);
    font: 600 0.75rem/1 var(--font-mono);
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.sheet-tag span {
    padding: 0.35rem 0.5rem;
    color: var(--on-accent);
    background: var(--measure);
}

.sheet-tag::after {
    content: "";
    flex: 0 0 56px;
    height: 1px;
    background: var(--measure);
    opacity: 0.6;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.arrow {
    display: inline-block;
    transition: transform 0.2s ease;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    padding: 1rem 1.55rem;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font: 700 1rem/1.1 var(--font-body);
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.btn-primary {
    background: var(--amber);
    color: var(--on-accent);
}

.btn-primary:hover {
    background: var(--amber-bright);
    box-shadow: 0 14px 28px -14px rgba(245, 151, 9, 0.7);
}

.btn-ghost {
    background: transparent;
    color: var(--text);
    border-color: var(--line-strong);
}

.btn-ghost:hover {
    color: var(--amber-bright);
    border-color: var(--amber);
}

.btn:hover {
    transform: translateY(-2px);
    outline: 1px dashed var(--measure);
    outline-offset: 5px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: wait;
    transform: none;
    outline: none;
}

.btn:hover .arrow,
.text-link:hover .arrow {
    transform: translateX(5px);
}

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding-bottom: 2px;
    border-bottom: 1px solid rgba(245, 151, 9, 0.4);
    color: var(--amber);
    font-weight: 700;
    text-decoration: none;
    transition: color 0.2s, border-color 0.2s;
}

.text-link:hover {
    color: var(--amber-bright);
    border-color: var(--amber-bright);
}

.grid-bg {
    position: relative;
    overflow: clip;
}

.grid-bg::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(127, 180, 214, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(127, 180, 214, 0.1) 1px, transparent 1px),
        linear-gradient(var(--grid-small) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-small) 1px, transparent 1px);
    background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px;
    -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 95%);
    mask-image: linear-gradient(to bottom, #000 0%, transparent 95%);
}

.grid-bg > .wrap {
    position: relative;
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 28px;
    width: 100%;
    min-height: var(--nav-height);
    padding: 12px clamp(16px, 4vw, 56px);
    border-bottom: 1px solid var(--line);
    background: var(--nav-bg);
    font: 500 15px/1.4 var(--font-body);
}

.navbar-menu {
    display: flex;
    align-items: center;
    order: 1;
    flex: 1;
    gap: 4px;
    min-width: 0;
}

.navbar a,
.navbar button {
    position: relative;
    padding: 10px 14px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    background: none;
    color: var(--text);
    font: inherit;
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
    transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.navbar-menu a:hover,
.navbar-toggle:hover {
    color: var(--amber-bright);
}

.navbar-menu > a::after {
    content: "";
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 3px;
    height: 7px;
    border-inline: 1px solid currentColor;
    background: linear-gradient(currentColor, currentColor) center / 100% 1px no-repeat;
    opacity: 0;
    transform: scaleX(0.4);
    transition: opacity 0.2s, transform 0.25s ease;
}

.navbar-menu > a:hover::after {
    opacity: 0.35;
    transform: none;
}

.navbar-menu > a[aria-current="page"] {
    color: var(--amber);
}

.navbar-menu > a[aria-current="page"]::after {
    opacity: 1;
    transform: none;
}

.navbar .navbar-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    padding: 0;
    border: 0;
    color: var(--text);
}

.navbar-brand img {
    display: block;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    object-fit: cover;
    transition: transform 0.2s;
}

.navbar-brand:hover img {
    transform: rotate(-6deg);
}

.navbar-wordmark {
    display: grid;
    font: 800 1.12rem/1 var(--font-display);
    letter-spacing: -0.01em;
}

.navbar-wordmark small {
    margin-top: 4px;
    color: var(--measure);
    font: 600 0.62rem/1 var(--font-mono);
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

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

.navbar .theme-toggle {
    order: 2;
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    flex: none;
    padding: 9px;
    border-color: var(--line-strong);
    color: var(--measure);
}

.navbar .theme-toggle:hover {
    border-color: var(--measure);
    background: var(--measure-tint);
}

.theme-toggle svg {
    display: block;
    width: 20px;
    height: 20px;
}

.theme-moon,
[data-theme="light"] .theme-sun {
    display: none;
}

[data-theme="light"] .theme-moon { display: block; }

.navbar .nav-cart {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.nav-session {
    margin: 0 0 0 6px;
}

.navbar a.nav-session,
.navbar .nav-session button {
    border-color: rgba(245, 151, 9, 0.45);
    color: var(--amber);
}

.navbar a.nav-session:hover,
.navbar .nav-session button:hover {
    border-color: var(--amber);
    background-color: var(--amber);
    color: var(--on-accent);
}

.navbar a.nav-session::after {
    display: none;
}

.navbar-toggle {
    display: none;
    align-items: center;
    gap: 10px;
    margin-left: auto;
}

.navbar-toggle-icon {
    display: grid;
    gap: 4px;
}

.navbar-toggle-icon span {
    width: 18px;
    height: 2px;
    background: currentColor;
}

@media (max-width: 1100px) {
    .navbar {
        flex-wrap: wrap;
        gap: 0;
        padding: 12px 16px;
    }

    .navbar-menu {
        order: 3;
        flex: 0 0 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
        margin-top: 12px;
        padding-top: 12px;
        border-top: 1px solid var(--line);
    }

    .navbar-menu > a::after {
        left: 0;
        right: auto;
        top: 10px;
        bottom: 10px;
        width: 3px;
        height: auto;
        border: 0;
        background: currentColor;
        transform: none;
    }

    .navbar .nav-account {
        margin-left: 0;
    }

    .navbar .theme-toggle {
        order: 1;
        margin-left: auto;
        margin-right: 8px;
    }

    .navbar-toggle { order: 2; margin-left: 0; }

    .navbar-enhanced .navbar-toggle:not([hidden]) {
        display: inline-flex;
    }

    /* JS adds these classes to hide or show the mobile links */
    .navbar-enhanced:not(.menu-open) .navbar-menu {
        display: none;
    }

    .nav-session {
        margin: 8px 0 0;
    }

    .navbar .nav-session button,
    .navbar a.nav-session {
        width: 100%;
        text-align: left;
    }
}

@media (max-width: 370px) {
    .navbar .navbar-brand { gap: 8px; }
    .navbar-brand img { width: 34px; height: 34px; }
    .navbar-wordmark { font-size: 0.94rem; }
    .navbar-wordmark small { display: none; }
    .navbar .theme-toggle { width: 36px; height: 36px; margin-right: 4px; }
    .navbar .navbar-toggle { gap: 6px; padding: 8px; }
}

.site-footer {
    border-top: 1px solid var(--line);
    background: var(--footer-bg);
    color: var(--muted);
    font-size: 0.95rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 2.5rem;
    padding-block: clamp(40px, 6vw, 72px);
}

@media (min-width: 560px) {
    .footer-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .footer-brand {
        grid-column: 1 / -1;
    }
}

@media (min-width: 900px) {
    .footer-grid {
        grid-template-columns: 1.5fr repeat(3, minmax(0, 1fr));
    }

    .footer-brand {
        grid-column: auto;
    }
}

.site-footer .footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.9rem;
    margin-bottom: 1rem;
    color: var(--text);
    font: 800 1.3rem/1 var(--font-display);
}

.footer-logo img {
    border-radius: 50%;
}

.site-footer h2 {
    margin: 0 0 0.9rem;
    color: var(--text);
    font: 600 0.75rem/1 var(--font-mono);
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.site-footer ul {
    display: grid;
    gap: 0.55rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-footer a,
.site-footer button {
    padding: 0;
    border: 0;
    background: none;
    color: var(--muted);
    font: inherit;
    text-decoration: none;
    cursor: pointer;
    transition: color 0.2s;
}

.site-footer a:hover,
.site-footer button:hover {
    color: var(--amber-bright);
}

.site-footer p,
.site-footer form {
    margin: 0;
}

.footer-base {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 0.5rem 2rem;
    padding-block: 1.4rem;
    border-top: 1px solid var(--line);
    font-size: 0.85rem;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        transition: none !important;
        animation: none !important;
    }

    .btn:hover,
    .navbar-brand:hover img {
        transform: none;
    }
}

.unavailable-page {
    padding-block: clamp(48px, 8vw, 96px);
}

.unavailable-page p {
    margin: 0.75rem 0 1.5rem;
    color: var(--muted);
}