:root {
    --bg: #0e1116;
    --fg: #e6e6e6;
    --muted: #8b8f96;
    --card: #161a22;
    --border: #232936;
    --primary: #4f8cff;
    --primary-hover: #3a78f0;
    --error: #ff5d5d;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--fg);
    line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 32px;
    border-bottom: 1px solid var(--border);
}
.topbar nav { display: flex; gap: 16px; align-items: center; }
.brand { font-weight: 700; font-size: 1.2rem; color: var(--fg); }

main { max-width: 960px; margin: 0 auto; padding: 32px 24px; }

.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--fg);
    cursor: pointer;
    font-size: 0.95rem;
}
.btn:hover { background: var(--card); text-decoration: none; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: white; }
.btn.primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }

.linkbtn {
    background: none;
    border: none;
    color: var(--primary);
    cursor: pointer;
    padding: 0;
    font: inherit;
}
.linkbtn:hover { text-decoration: underline; }
form.inline { display: inline; }

.hero { text-align: center; padding: 64px 16px; }
.hero h1 { font-size: 2.5rem; margin: 0 0 16px; }
.hero p { color: var(--muted); margin-bottom: 32px; }
.hero .btn + .btn { margin-left: 8px; }

.form-card {
    max-width: 380px;
    margin: 32px auto;
    padding: 32px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
}
.form-card h1 { margin-top: 0; }
.form-card label {
    display: block;
    margin-bottom: 16px;
    color: var(--muted);
    font-size: 0.9rem;
}
.form-card input {
    width: 100%;
    padding: 10px 12px;
    margin-top: 6px;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--fg);
    border-radius: 6px;
    font-size: 1rem;
}
.form-card input:focus { outline: none; border-color: var(--primary); }
.form-card button { width: 100%; padding: 10px; }
.form-card p { margin: 12px 0 0; }
.error { color: var(--error); margin-bottom: 12px; }
.hint { color: var(--muted); font-size: 0.85rem; }

.dash h1 { margin-top: 0; }
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 16px;
}
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
}
.card h3 { margin-top: 0; font-size: 0.95rem; color: var(--muted); font-weight: 500; }
.card .big { font-size: 1.6rem; margin: 4px 0; }
.card input[type=text] {
    width: 100%;
    padding: 6px 8px;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--fg);
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.85rem;
}
.badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--primary);
    color: white;
    border-radius: 4px;
    font-size: 0.75rem;
    vertical-align: middle;
}
code, .mono {
    background: var(--bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.85em;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.mono { background: transparent; padding: 0; color: var(--muted); }

.success { color: #4ad08c; margin-bottom: 12px; }
.muted { color: var(--muted); }

.admin {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 24px;
}
.admin-nav { display: flex; flex-direction: column; gap: 4px; }
.admin-nav a {
    padding: 8px 12px;
    border-radius: 6px;
    color: var(--fg);
}
.admin-nav a:hover { background: var(--card); text-decoration: none; }

.admin-body table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
}
.admin-body th, .admin-body td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}
.admin-body th { font-weight: 500; color: var(--muted); }
.admin-body input[type=text],
.admin-body input[type=number],
.admin-body input[type=url] {
    width: 100%;
    padding: 6px 8px;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--fg);
    border-radius: 4px;
    font-family: ui-monospace, monospace;
}
.admin-body button { margin-top: 16px; }
.admin-body .actions { display: flex; gap: 12px; }

details.form-card { padding: 16px 20px; }
details.form-card summary { cursor: pointer; font-weight: 500; }
details.form-card[open] summary { margin-bottom: 12px; }
.form-card.narrow { max-width: 480px; }

@media (max-width: 720px) {
    .admin { grid-template-columns: 1fr; }
}

.grid.plans { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.card.plan {
    text-align: center;
    border: 1px solid var(--border);
    margin: 0;
    padding: 20px 16px;
    transition: border-color 0.15s;
}
.card.plan:hover { border-color: var(--primary); }
.card.plan h3 { margin: 0; font-size: 1rem; color: var(--fg); }
.card.plan .big { font-size: 1.8rem; margin: 8px 0 4px; color: var(--fg); }
.card.plan button { margin-top: 12px; width: 100%; }