:root {
    color-scheme: light;
    --bg: #f3f6fb;
    --card: #ffffff;
    --line: #d9e2ef;
    --text: #1f2937;
    --muted: #6b7280;
    --warning: #d97706;
    --warning-bg: #fff7ed;
    --warning-line: #fdba74;
    --primary: #2563eb;
    --danger: #dc2626;
    --success: #16a34a;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
}
button, input, select {
    font: inherit;
}
.app-shell {
    max-width: 1680px;
    margin: 0 auto;
    padding: 20px;
}
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 16px;
    margin-bottom: 20px;
}
.topbar-side {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 12px;
}
.auth-actions {
    display: flex;
    gap: 8px;
}
.auth-shell {
    margin-bottom: 20px;
}
.auth-card {
    max-width: 420px;
    margin: 0 auto 16px;
}
.auth-card h2 {
    margin-top: 0;
}
.topbar h1 { margin: 0 0 6px; }
.topbar p, .refresh-info, .muted { color: var(--muted); margin: 0; }
.refresh-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 16px;
    align-items: center;
    margin-top: 14px;
}
.refresh-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    color: var(--muted);
    font-size: 13px;
}
.refresh-field input {
    width: 110px;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #fff;
    color: var(--text);
}
.refresh-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text);
}
.refresh-checkbox input {
    width: 16px;
    height: 16px;
}
.tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.tab, button {
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 10px;
    padding: 10px 16px;
    cursor: pointer;
}
.tab.active, .primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.view { display: none; }
.view.active { display: block; }
.grid {
    display: grid;
    gap: 16px;
}
.two-columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-bottom: 16px;
}
.card {
    background: var(--card);
    border-radius: 16px;
    padding: 18px;
    box-shadow: 0 6px 18px rgba(31, 41, 55, 0.06);
}
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.card-header h2 {
    margin: 0;
}
.positions-header {
    align-items: flex-start;
}
.positions-header-main {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
}
.positions-header .refresh-info {
    line-height: 1.4;
}
.filter-field {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--muted);
    font-size: 13px;
}
.filter-field select {
    min-width: 180px;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #fff;
    color: var(--text);
}
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}
.form-grid.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.form-grid input,
.form-grid select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #fff;
}
.span-2 { grid-column: span 2; }
.summary-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}
.summary-item {
    background: #f8fafc;
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 14px;
}
.summary-item label {
    display: block;
    color: var(--muted);
    font-size: 13px;
    margin-bottom: 4px;
}
.summary-item strong {
    font-size: 20px;
}
.table-wrap { overflow: auto; }
table {
    width: 100%;
    border-collapse: collapse;
    min-width: 900px;
}
th, td {
    border-bottom: 1px solid var(--line);
    padding: 12px 10px;
    text-align: left;
    white-space: nowrap;
}
thead th {
    background: #f8fafc;
    position: sticky;
    top: 0;
}
#positions-sort-head th {
    cursor: pointer;
    user-select: none;
}
#positions-sort-head th:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: -2px;
}
#positions-sort-head th.is-active {
    color: var(--primary);
}
.sort-label {
    margin-right: 6px;
}
.sort-indicator {
    color: var(--muted);
    font-size: 12px;
}
#positions-sort-head th.is-active .sort-indicator {
    color: var(--primary);
}
.ttrade-status {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 700;
}
.ttrade-status-open {
    color: var(--warning);
    background: var(--warning-bg);
    border: 1px solid var(--warning-line);
}
.ttrade-status-closed {
    color: var(--primary);
    background: #eff6ff;
    border: 1px solid #bfdbfe;
}
.ttrade-row-open {
    background: rgba(255, 247, 237, 0.7);
}
.ttrade-waiting {
    color: var(--warning);
    font-weight: 700;
}
.result-box {
    margin-top: 16px;
    min-height: 100px;
    border: 1px dashed var(--line);
    border-radius: 12px;
    padding: 14px;
    background: #f8fafc;
}
.profit-positive { color: var(--danger); }
.profit-negative { color: var(--success); }
.actions {
    display: flex;
    gap: 8px;
}
.btn-danger {
    color: var(--danger);
    border-color: rgba(220, 38, 38, 0.2);
}
.toast {
    position: fixed;
    right: 20px;
    bottom: 20px;
    background: rgba(31, 41, 55, 0.95);
    color: #fff;
    padding: 12px 14px;
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}
.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 1000;
}
.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
}
.modal-card {
    position: relative;
    width: min(820px, 100%);
    max-height: calc(100vh - 40px);
    overflow: auto;
}
.json-textarea {
    width: 100%;
    min-height: 320px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #fff;
    color: var(--text);
    font: 14px/1.6 Consolas, Monaco, monospace;
    resize: vertical;
    margin-bottom: 16px;
}
.settings-grid {
    align-items: start;
}
.settings-refresh-controls {
    align-items: flex-end;
}
.settings-refresh-info {
    margin-top: 14px;
}
.settings-auth-actions {
    justify-content: flex-start;
    flex-wrap: wrap;
}
.calculator-lot-input {
    width: 88px;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #fff;
    color: var(--text);
}
.calculator-side-select {
    width: 96px;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #fff;
    color: var(--text);
}
.calculator-note {
    display: block;
    margin-top: 4px;
    color: var(--muted);
    font-size: 12px;
}
.hidden { display: none; }

@media (max-width: 900px) {
    .topbar,
    .topbar-side,
    .two-columns,
    .summary-grid,
    .form-grid {
        grid-template-columns: 1fr;
        display: grid;
    }
    .auth-actions {
        width: 100%;
    }
    .refresh-controls {
        align-items: flex-start;
        flex-direction: column;
    }
    .card-header,
    .positions-header {
        align-items: flex-start;
        flex-direction: column;
    }
    .span-2 { grid-column: span 1; }
    .topbar { align-items: flex-start; }
}