:root {
    --bg: #f4f6f9;
    --card: #ffffff;
    --text: #1a202c;
    --muted: #718096;
    --border: #e2e8f0;
    --primary: #2b6cb0;
    --primary-dark: #1e4e7a;
    --success: #2f855a;
    --danger: #c53030;
    --warning: #b7791f;
    --radius: 8px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
    overflow-wrap: break-word;
}

a { color: var(--primary); }

.topbar {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    padding: 8px 24px;
    min-height: 56px;
    gap: 8px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.topbar .brand { font-weight: 700; font-size: 16px; color: var(--text); text-decoration: none; display: flex; align-items: center; flex-shrink: 0; }
.topbar .brand img { height: 32px; width: auto; max-width: 225px; display: block; }
.topbar nav { display: flex; flex-wrap: wrap; gap: 4px 6px; align-items: center; }
.topbar nav a {
    color: var(--muted); text-decoration: none; font-size: 13.5px; font-weight: 600;
    padding: 6px 10px; border-radius: 6px; transition: background-color .12s, color .12s;
}
.topbar nav a.active { color: var(--primary); background: #ebf8ff; }
.topbar nav a:hover { color: var(--primary); background: #f4f6f9; }
.topbar .balance { background: #ebf8ff; color: var(--primary-dark); padding: 4px 10px; border-radius: 999px; font-weight: 600; font-size: 13px; white-space: nowrap; }
.topbar .nav-divider { width: 1px; align-self: stretch; background: var(--border); margin: 4px 4px; flex-shrink: 0; }

.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    padding: 8px 10px;
    flex-shrink: 0;
    line-height: 0;
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--text); border-radius: 1px; }
.nav-toggle span + span { margin-top: 4px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav-toggle span { transition: transform .15s, opacity .15s; }

.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

@media (max-width: 760px) {
    .topbar { padding: 8px 12px; }
    .topbar .brand img { height: 26px; }
    .nav-toggle { display: block; }
    .topbar nav {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
        padding-top: 8px;
        border-top: 1px solid var(--border);
        margin-top: 8px;
    }
    .topbar nav.open { display: flex; }
    .topbar nav a { padding: 11px 8px; font-size: 14.5px; }
    .topbar nav form { width: 100%; }
    .topbar nav form button { width: 100%; }
    .topbar .balance { align-self: flex-start; margin: 4px 0; }
    .topbar .nav-divider { display: none; }
}

.container { max-width: 1040px; margin: 28px auto; padding: 0 20px; }
.container.narrow { max-width: 460px; }

.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; margin-bottom: 18px; }
.card h2 { margin-top: 0; font-size: 17px; }
.card h1 { margin-top: 0; font-size: 20px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.stat .value { font-size: 24px; font-weight: 700; }
.stat .label { color: var(--muted); font-size: 12.5px; text-transform: uppercase; letter-spacing: .03em; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--border); font-size: 13.5px; }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
tr:last-child td { border-bottom: none; }

form .field { margin-bottom: 14px; }
label { display: block; margin-bottom: 5px; font-weight: 600; font-size: 13px; }
input[type=text], input[type=email], input[type=password], input[type=url], input[type=number], select, textarea {
    width: 100%; padding: 9px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; font-family: inherit;
}
textarea { resize: vertical; }
input[type=file] { font-size: 13px; }

.btn { display: inline-block; background: var(--primary); color: #fff; border: none; padding: 9px 16px; border-radius: 6px; font-size: 13.5px; cursor: pointer; text-decoration: none; font-weight: 600; }
.btn:hover { background: var(--primary-dark); }
.btn.secondary { background: #edf2f7; color: var(--text); }
.btn.secondary:hover { background: #e2e8f0; }
.btn.danger { background: var(--danger); }
.btn.small { padding: 5px 10px; font-size: 12.5px; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11.5px; font-weight: 700; text-transform: uppercase; }
.badge.active { background: #e6fffa; color: var(--success); }
.badge.paused { background: #fffbea; color: var(--warning); }
.badge.pending { background: #ebf8ff; color: var(--primary-dark); }
.badge.suspended, .badge.banned { background: #fff5f5; color: var(--danger); }

.alert { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; font-size: 13.5px; }
.alert.error { background: #fff5f5; color: var(--danger); border: 1px solid #feb2b2; }
.alert.success { background: #f0fff4; color: var(--success); border: 1px solid #9ae6b4; }
.alert.info { background: #ebf8ff; color: var(--primary-dark); border: 1px solid #90cdf4; }

code { overflow-wrap: break-word; word-break: break-word; }
.muted { color: var(--muted); }
.snippet { background: #1a202c; color: #e2e8f0; padding: 12px; border-radius: 6px; font-family: Consolas, monospace; font-size: 12.5px; overflow-x: auto; white-space: pre; }
.row-actions form { display: inline; }
.empty { color: var(--muted); text-align: center; padding: 30px 0; }