:root {
    --green: #1a9c4b;
    --green-bg: #e6f7ec;
    --red: #c0392b;
    --red-bg: #fbeae8;
    --bg: #f4f6f8;
    --card: #ffffff;
    --border: #e1e4e8;
    --text: #1f2933;
    --muted: #6b7684;
    --accent: #2563eb;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

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

.brand { font-weight: 700; font-size: 1.1rem; }

.topbar nav a {
    margin-right: 16px;
    text-decoration: none;
    color: var(--text);
    font-size: 0.95rem;
}
.topbar nav a:hover { color: var(--accent); }

.user-menu { display: flex; align-items: center; gap: 12px; font-size: 0.9rem; color: var(--muted); }
.user-menu a { color: var(--accent); text-decoration: none; }

.container { max-width: 1100px; margin: 24px auto; padding: 0 16px; }

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
}

h1, h2 { margin-top: 0; }

table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { padding: 10px 8px; text-align: right; border-bottom: 1px solid var(--border); }
th:first-child, td:first-child { text-align: left; }
thead th { color: var(--muted); font-weight: 600; font-size: 0.82rem; text-transform: uppercase; }

.buy, .type-buy, .positive { color: var(--green); font-weight: 600; }
.sell, .type-sell, .negative { color: var(--red); font-weight: 600; }

.badge { display: inline-block; padding: 2px 10px; border-radius: 12px; font-size: 0.8rem; font-weight: 600; }
.badge-buy { background: var(--green-bg); color: var(--green); }
.badge-sell { background: var(--red-bg); color: var(--red); }

.btn {
    display: inline-block;
    padding: 9px 16px;
    border-radius: 6px;
    border: none;
    background: var(--accent);
    color: white;
    text-decoration: none;
    font-size: 0.9rem;
    cursor: pointer;
}
.btn-buy { background: var(--green); }
.btn-sell { background: var(--red); }
.btn-danger { background: var(--red); }
.btn-secondary { background: var(--muted); }

form.inline { display: inline; }

.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.form-grid.full { grid-template-columns: 1fr; }
label { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 4px; }
input, select, textarea {
    width: 100%; padding: 9px 10px; border: 1px solid var(--border);
    border-radius: 6px; font-size: 0.95rem;
}
input[type=radio] { width: auto; }

.flash-container { margin-bottom: 16px; }
.flash { padding: 10px 14px; border-radius: 6px; margin-bottom: 8px; font-size: 0.9rem; }
.flash-error { background: var(--red-bg); color: var(--red); }
.flash-success { background: var(--green-bg); color: var(--green); }

.auth-wrap {
    max-width: 380px; margin: 80px auto; background: var(--card);
    padding: 32px; border-radius: 10px; border: 1px solid var(--border);
}
.auth-wrap h1 { font-size: 1.3rem; text-align: center; }
.auth-wrap .btn { width: 100%; margin-top: 8px; text-align: center; }

.qr-box { text-align: center; margin: 16px 0; }
.qr-box img { border: 1px solid var(--border); border-radius: 8px; }
.secret-code { font-family: monospace; background: #f0f2f5; padding: 8px; border-radius: 6px; text-align: center; letter-spacing: 2px; }

.kpi-row { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.kpi { flex: 1; min-width: 160px; background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 16px; }
.kpi .label { color: var(--muted); font-size: 0.82rem; text-transform: uppercase; }
.kpi .value { font-size: 1.4rem; font-weight: 700; margin-top: 4px; }

.sim-row { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 10px; margin-bottom: 8px; align-items: end; }