:root {
    --bg: #0c0f14;
    --bg-card: #141821;
    --bg-card-hi: #1a1f2b;
    --border: #232a37;
    --border-hi: #2c3444;
    --text: #e0e6ed;
    --text-muted: #7e8a9f;
    --accent: #60a5fa;
    --accent-hi: #93c5fd;
    --pos: #22c55e;
    --neg: #ef4444;
    --warn: #f59e0b;
    --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

* { box-sizing: border-box; }
html, body { background: var(--bg); color: var(--text); margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hi); }

.mono { font-family: var(--mono); }
.small { font-size: 12px; }
.num { text-align: right; }
.muted { color: var(--text-muted); }
.empty { color: var(--text-muted); font-style: italic; padding: 24px 0; }

.topbar {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 12px 24px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: baseline; gap: 8px; }
.brand-name { font-weight: 700; letter-spacing: 0.5px; }
.brand-sub { color: var(--text-muted); font-size: 12px; font-family: var(--mono); }
.topbar nav { display: flex; gap: 16px; flex: 1; }
.topbar nav a {
    color: var(--text-muted);
    padding: 6px 10px;
    border-radius: 4px;
    transition: background-color 80ms;
}
.topbar nav a:hover { background: var(--bg-card-hi); color: var(--text); }
.topbar nav a.active { color: var(--text); background: var(--bg-card-hi); }
.logout-form { display: flex; align-items: center; gap: 12px; }
.user { color: var(--text-muted); font-family: var(--mono); font-size: 12px; }
.link-button {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font: inherit;
    padding: 4px 8px;
}
.link-button:hover { color: var(--text); }

.container { padding: 24px; max-width: 1400px; margin: 0 auto; }
.footer { padding: 24px; text-align: center; color: var(--text-muted); font-size: 12px; }

.page-h { margin: 0 0 24px; font-size: 24px; font-weight: 600; }
.section-h { margin: 32px 0 12px; font-size: 14px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.back-link { display: inline-block; color: var(--text-muted); margin-bottom: 12px; font-size: 13px; }

/* banners */
.banner {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
    border: 1px solid var(--border);
}
.banner-warn { background: rgba(245, 158, 11, 0.08); border-color: rgba(245, 158, 11, 0.4); color: var(--warn); }

/* cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 8px;
}
.card-grid-narrow { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); }
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 14px 16px;
}
.card-label { color: var(--text-muted); font-size: 11px; text-transform: uppercase; letter-spacing: 1px; }
.card-value { font-size: 22px; font-weight: 600; margin-top: 4px; font-family: var(--mono); }
.card-sub { color: var(--text-muted); font-size: 11px; margin-top: 2px; }
.pnl-pos { color: var(--pos); }
.pnl-neg { color: var(--neg); }

/* tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
    margin-top: 12px;
}
.data-table th, .data-table td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
}
.data-table th {
    background: var(--bg-card-hi);
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 1px;
    font-weight: 500;
}
.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table tbody tr:hover { background: var(--bg-card-hi); }
.data-table-compact th, .data-table-compact td { padding: 6px 10px; font-size: 13px; }
.symbol { font-weight: 600; }

/* trade status pills */
.status {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    text-transform: uppercase;
    margin-left: 8px;
    vertical-align: middle;
}
.status-open { background: rgba(59, 130, 246, 0.15); color: var(--accent); }
.status-closed { background: rgba(126, 138, 159, 0.12); color: var(--text-muted); }
.trade-id { color: var(--text-muted); font-family: var(--mono); font-weight: 400; margin-left: 8px; font-size: 16px; }

/* RL action color codes */
.action { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 11px; font-family: var(--mono); }
.action-enter { background: rgba(34, 197, 94, 0.15); color: var(--pos); }
.action-exit { background: rgba(239, 68, 68, 0.15); color: var(--neg); }
.action-hold { background: rgba(96, 165, 250, 0.15); color: var(--accent); }
.action-wait { background: rgba(126, 138, 159, 0.15); color: var(--text-muted); }
.action-ratchet { background: rgba(245, 158, 11, 0.15); color: var(--warn); }

/* bar charts */
.bars-section { margin-bottom: 24px; }
.bar-row { display: flex; align-items: center; gap: 12px; padding: 4px 0; }
.bar-label { min-width: 120px; }
.bar-wrap { flex: 1; background: var(--bg-card); height: 18px; border-radius: 3px; overflow: hidden; border: 1px solid var(--border); }
.bar { display: block; height: 100%; background: var(--accent); }
.action-bar-enter { background: var(--pos); }
.action-bar-exit { background: var(--neg); }
.action-bar-hold { background: var(--accent); }
.action-bar-wait { background: var(--text-muted); }
.action-bar-ratchet { background: var(--warn); }
.bar-n { min-width: 80px; text-align: right; color: var(--text-muted); }

/* time filters */
.time-filters { display: flex; gap: 6px; margin-bottom: 16px; }
.time-filters a {
    padding: 4px 12px;
    border-radius: 4px;
    color: var(--text-muted);
    font-size: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
}
.time-filters a:hover { color: var(--text); }
.time-filters a.active { color: var(--text); background: var(--bg-card-hi); border-color: var(--border-hi); }

/* chart */
.chart-wrap {
    margin-top: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 12px;
}
.chart { width: 100%; height: 500px; }
.loading { color: var(--text-muted); font-style: italic; padding: 16px; }
.decisions-wrap { margin-top: 24px; }
.chart-toolbar { display: flex; align-items: center; gap: 6px; margin-bottom: 8px; flex-wrap: wrap; }
.chart-toolbar-label { color: var(--text-muted); font-size: 11px; text-transform: uppercase; letter-spacing: 1px; margin-right: 4px; }
.interval-btn {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-muted);
    font: inherit;
    font-size: 12px;
    padding: 4px 10px;
    cursor: pointer;
}
.interval-btn:hover { color: var(--text); }
.interval-btn.active { color: var(--text); background: var(--bg-card-hi); border-color: var(--border-hi); }
.chart-status { margin-left: auto; color: var(--text-muted); font-size: 12px; font-family: var(--mono); }

/* Wall / control room — chart-focused */
.wall-charts { margin-top: 12px; }
.mini-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;       /* desktop: exactly 2 per row */
    gap: 16px;
}
@media (max-width: 900px) {
    .mini-grid { grid-template-columns: 1fr; }   /* mobile: stack */
}
.mini-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.mini-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
}
.mini-symbol { font-weight: 600; font-size: 17px; }
.mini-pnl { font-size: 18px; font-weight: 700; }
.mini-toolbar {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}
.mini-toolbar .interval-btn { padding: 3px 10px; font-size: 12px; }
.mini-status { margin-left: auto; color: var(--text-muted); }
.mini-chart { width: 100%; height: 420px; }
.mini-footer {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    color: var(--text-muted);
}

/* Activity feed */
.wall-activity { margin-top: 12px; }
.activity-list { list-style: none; padding: 0; margin: 0; background: var(--bg-card); border: 1px solid var(--border); border-radius: 6px; }
.activity-row {
    display: grid;
    grid-template-columns: 180px 80px 1fr 60px;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}
.activity-row:last-child { border-bottom: 0; }
.activity-time { color: var(--text-muted); }
.activity-tag {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-align: center;
    font-family: var(--mono);
}
.activity-tag-entry  { background: rgba(34, 197, 94, 0.15); color: var(--pos); }
.activity-tag-exit   { background: rgba(126, 138, 159, 0.15); color: var(--text-muted); }
.activity-tag-sl     { background: rgba(239, 68, 68, 0.15); color: var(--neg); }
.activity-tag-tp     { background: rgba(34, 197, 94, 0.15); color: var(--pos); }
.activity-tag-ratchet{ background: rgba(245, 158, 11, 0.15); color: var(--warn); }
.activity-tag-uni_in { background: rgba(96, 165, 250, 0.15); color: var(--accent); }
.activity-tag-uni_out{ background: rgba(126, 138, 159, 0.12); color: var(--text-muted); }
.activity-text { color: var(--text); }
.activity-link { justify-self: end; }

/* login */
.login-shell {
    max-width: 360px;
    margin: 80px auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 32px;
}
.login-title { font-size: 24px; margin: 0 0 4px; text-align: center; }
.login-sub { color: var(--text-muted); text-align: center; margin: 0 0 24px; font-size: 12px; }
.login-form { display: flex; flex-direction: column; gap: 12px; }
.login-form label { display: flex; flex-direction: column; gap: 4px; }
.login-form label span { color: var(--text-muted); font-size: 12px; }
.login-form input {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 8px 10px;
    color: var(--text);
    font: inherit;
}
.login-form input:focus { outline: none; border-color: var(--accent); }
.login-form button {
    background: var(--accent);
    color: var(--bg);
    border: none;
    padding: 10px;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 8px;
}
.login-form button:hover { background: var(--accent-hi); }
.error {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: var(--neg);
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 13px;
    margin-bottom: 12px;
}