*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg: #ffffff;
    --card-bg: #f5f5f5;
    --sidebar-bg: #1e293b;
    --sidebar-text: #cbd5e1;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --text: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #d97706;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,.1);
}

body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); line-height: 1.5; }

.layout { display: flex; min-height: 100vh; }

.sidebar { width: 240px; background: var(--sidebar-bg); color: var(--sidebar-text); display: flex; flex-direction: column; position: fixed; top: 0; left: 0; height: 100vh; }
.sidebar-brand { display: flex; align-items: center; gap: 10px; padding: 20px 16px; font-size: 1.1rem; font-weight: 700; color: #fff; border-bottom: 1px solid #334155; }
.brand-icon { font-size: 1.4rem; }
.paper-banner { background: var(--warning); color: #fff; text-align: center; padding: 4px; font-size: 0.7rem; font-weight: 700; letter-spacing: 1px; }
.sidebar-nav { flex: 1; padding: 12px 0; }
.nav-link { display: flex; align-items: center; gap: 10px; padding: 10px 16px; color: var(--sidebar-text); text-decoration: none; font-size: 0.875rem; transition: background .15s; }
.nav-link:hover, .nav-link.active { background: #334155; color: #fff; }
.nav-icon { font-size: 0.75rem; }
.sidebar-footer { padding: 16px; border-top: 1px solid #334155; }
.logout-link { color: var(--sidebar-text); text-decoration: none; font-size: 0.875rem; }
.logout-link:hover { color: #fff; }

.main-content { margin-left: 240px; flex: 1; padding: 24px; background: #f8fafc; min-height: 100vh; }

.page-header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
.page-header h1 { font-size: 1.5rem; font-weight: 700; color: var(--text); }

.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.section-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 16px; margin-bottom: 24px; }

.card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.card h3 { font-size: 0.875rem; font-weight: 600; color: var(--text-muted); margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.05em; }
.card-label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 4px; }
.card-value { font-size: 1.5rem; font-weight: 700; color: var(--text); }

.chart-card { min-height: 300px; }

.status-badge { padding: 4px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; background: #e2e8f0; color: var(--text-muted); }
.status-running { background: #dcfce7; color: var(--success); }
.status-paused { background: #fef9c3; color: var(--warning); }
.status-error { background: #fee2e2; color: var(--danger); }
.status-paper { background: #dbeafe; color: var(--accent); }

.data-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.data-table th { text-align: left; padding: 10px 12px; background: #f1f5f9; border-bottom: 2px solid var(--border); font-weight: 600; color: var(--text-muted); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; }
.data-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); color: var(--text); }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: #f8fafc; }
.loading, .empty { text-align: center; color: var(--text-muted); font-style: italic; }

.side-badge { padding: 2px 8px; border-radius: 4px; font-size: 0.75rem; font-weight: 600; }
.side-buy { background: #dcfce7; color: var(--success); }
.side-sell { background: #fee2e2; color: var(--danger); }

.action-badge { padding: 2px 8px; border-radius: 4px; font-size: 0.75rem; font-weight: 600; background: #dbeafe; color: var(--accent); }
.risk-badge { padding: 2px 8px; border-radius: 4px; font-size: 0.75rem; background: #fee2e2; color: var(--danger); }
.tag { padding: 2px 8px; border-radius: 4px; font-size: 0.75rem; background: #f1f5f9; color: var(--text-muted); }

.reasoning-cell { max-width: 300px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.pagination { display: flex; gap: 8px; margin-top: 16px; justify-content: center; }
.pagination button { padding: 6px 12px; border: 1px solid var(--border); background: var(--bg); border-radius: 4px; cursor: pointer; font-size: 0.875rem; }
.pagination button:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.pagination button.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.filter-bar { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.filter-bar label { font-size: 0.875rem; color: var(--text-muted); }
.filter-bar input { padding: 6px 10px; border: 1px solid var(--border); border-radius: 4px; font-size: 0.875rem; }

.btn { display: inline-flex; align-items: center; justify-content: center; padding: 8px 16px; border-radius: var(--radius); border: none; font-size: 0.875rem; font-weight: 600; cursor: pointer; transition: background .15s; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: var(--card-bg); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }
.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-hover); }
.analysis-container table { margin-top: 0.5rem; }
.btn-full { width: 100%; }

.control-group { display: flex; gap: 12px; margin-bottom: 12px; }
.control-feedback { font-size: 0.875rem; margin-top: 8px; }
.control-feedback.success { color: var(--success); }
.control-feedback.error { color: var(--danger); }

.settings-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.875rem; font-weight: 600; margin-bottom: 4px; color: var(--text-muted); }
.form-group input[type=range] { width: 100%; }
.mode-warning { font-size: 0.75rem; color: var(--warning); margin-top: 8px; }

.toggle { position: relative; display: inline-block; width: 40px; height: 22px; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background: #cbd5e1; border-radius: 22px; transition: .3s; }
.toggle input:checked + .toggle-slider { background: var(--accent); }
.toggle-slider::before { content: ''; position: absolute; height: 16px; width: 16px; left: 3px; bottom: 3px; background: #fff; border-radius: 50%; transition: .3s; }
.toggle input:checked + .toggle-slider::before { transform: translateX(18px); }
.toggle-label { display: flex; align-items: center; gap: 10px; font-size: 0.875rem; }

.drawdown-container { margin-top: 8px; }
.drawdown-bar { height: 20px; background: var(--border); border-radius: 10px; overflow: hidden; margin-bottom: 8px; }
.drawdown-fill { height: 100%; background: linear-gradient(90deg, var(--success), var(--warning), var(--danger)); border-radius: 10px; transition: width .5s; }
.status-indicator { padding: 6px 12px; border-radius: 20px; font-size: 0.875rem; font-weight: 600; }
.status-ok { background: #dcfce7; color: var(--success); }
.status-error { background: #fee2e2; color: var(--danger); }

.health-card { display: flex; align-items: center; gap: 14px; }
.health-icon { font-size: 1.5rem; }
.health-ok { color: var(--success); }
.health-error { color: var(--danger); }
.health-name { font-weight: 600; margin-bottom: 2px; }
.health-status { font-size: 0.75rem; color: var(--text-muted); }

.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: #f8fafc; }
.login-container { width: 100%; max-width: 400px; padding: 24px; }
.login-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; box-shadow: 0 4px 16px rgba(0,0,0,.1); }
.login-header { text-align: center; margin-bottom: 24px; }
.login-icon { font-size: 2.5rem; display: block; margin-bottom: 12px; }
.login-header h1 { font-size: 1.25rem; font-weight: 700; margin-bottom: 4px; }
.login-header p { font-size: 0.875rem; color: var(--text-muted); }
.login-form .form-group { margin-bottom: 16px; }
.login-form input { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 0.875rem; }
.login-form input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37,99,235,.1); }

.alert { padding: 10px 14px; border-radius: var(--radius); margin-bottom: 16px; font-size: 0.875rem; }
.alert-error { background: #fee2e2; color: var(--danger); border: 1px solid #fca5a5; }

@media (max-width: 768px) {
    .sidebar { transform: translateX(-240px); }
    .main-content { margin-left: 0; }
    .section-grid { grid-template-columns: 1fr; }
}