:root {
    --bg: #f6f7f9;
    --card: #ffffff;
    --line: #e3e6ea;
    --text: #1c1f23;
    --muted: #6b7280;
    --accent: #1f6feb;
    --ok: #1a7f37;
    --err: #b42318;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 24px;
    background: #fff;
    border-bottom: 1px solid var(--line);
}

.brand { font-weight: 700; text-decoration: none; color: var(--text); }
.topbar nav { display: flex; align-items: center; gap: 14px; }
.topbar nav a { color: var(--accent); text-decoration: none; }
.who { color: var(--muted); font-size: 14px; }
.inline { display: inline; }
.link { background: none; border: 0; color: var(--accent); cursor: pointer; font: inherit; padding: 0; }

main { max-width: 980px; margin: 24px auto 48px; padding: 0 16px; }

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 24px;
    margin-bottom: 20px;
}
.card.narrow { max-width: 480px; margin-left: auto; margin-right: auto; }

h1 { font-size: 22px; margin: 0 0 12px; }
h2 { font-size: 18px; margin: 0 0 12px; }
.muted { color: var(--muted); font-size: 14px; }
.row { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; flex-wrap: wrap; }

.balance { text-align: right; }
.balance-value { display: block; font-size: 36px; font-weight: 700; line-height: 1; }
.balance-label { color: var(--muted); font-size: 13px; }

.actions { margin-top: 16px; }
.btn {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    border: 0;
    border-radius: 8px;
    padding: 10px 16px;
    font: inherit;
    text-decoration: none;
    cursor: pointer;
}
.btn.small { padding: 6px 12px; font-size: 14px; }
.btn.ghost { background: #fff; color: var(--accent); border: 1px solid var(--accent); }

form label { display: block; margin-bottom: 12px; font-size: 14px; color: var(--muted); }
form input[type=text], form input[type=email], form input[type=password],
form input[type=number], form select {
    display: block;
    width: 100%;
    margin-top: 4px;
    padding: 9px 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    font: inherit;
    color: var(--text);
    background: #fff;
}
form .check { display: flex; align-items: center; gap: 8px; }
form .check input { width: auto; margin: 0; }
.topup { display: grid; grid-template-columns: 2fr 1fr 2fr auto; gap: 12px; align-items: end; }
@media (max-width: 760px) { .topup { grid-template-columns: 1fr; } }

.flash { border-radius: 8px; padding: 10px 14px; margin-bottom: 16px; font-size: 14px; }
.flash.ok { background: #e8f5ec; color: var(--ok); border: 1px solid #b7e0c3; }
.flash.error { background: #fdecea; color: var(--err); border: 1px solid #f5c2bd; }
.flash.info { background: #eef4ff; color: var(--accent); border: 1px solid #c9dcff; }

table.grid { width: 100%; border-collapse: collapse; font-size: 14px; }
table.grid th, table.grid td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
table.grid th { color: var(--muted); font-weight: 600; }
.plus { color: var(--ok); font-weight: 600; }
.minus { color: var(--err); font-weight: 600; }

.status { padding: 2px 8px; border-radius: 999px; font-size: 12px; background: #eef1f5; }
.status.done { background: #e8f5ec; color: var(--ok); }
.status.failed { background: #fdecea; color: var(--err); }
.status.running { background: #eef4ff; color: var(--accent); }

.features { color: var(--muted); }
.cta { margin-top: 20px; display: flex; gap: 10px; }

footer { text-align: center; color: var(--muted); font-size: 13px; padding: 24px 16px 40px; }