:root {
  --bg-main: #0b0f19;
  --bg-card: #131b2e;
  --bg-card-hover: #1b253e;
  --bg-input: #080c14;
  --border-color: #1e293b;
  --border-focus: #3b82f6;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --accent-blue: #2563eb;
  --accent-cyan: #06b6d4;
  --accent-green: #22c55e;
  --accent-red: #ef4444;
  --accent-yellow: #f59e0b;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

/* Header */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px;
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.5px;
}
.badge-paper {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.3);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
}
.market-status {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
}
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.pill-green { background: rgba(34, 197, 94, 0.15); color: #4ade80; border: 1px solid rgba(34, 197, 94, 0.3); }
.pill-red { background: rgba(239, 68, 68, 0.15); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.3); }
.pill-yellow { background: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.3); }

/* Main layout */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px 24px;
}

/* Section Switcher */
.section-switcher {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}
.btn-section {
  padding: 12px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.5px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}
.btn-section:hover { background: var(--bg-card-hover); color: var(--text-main); }
.btn-section.active {
  background: linear-gradient(135deg, var(--accent-blue) 0%, #1d4ed8 100%);
  color: #fff;
  border-color: var(--accent-blue);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

/* Tab Navigation */
.tabs-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}
.tab-btn {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
}
.tab-btn:hover { background: var(--bg-card); color: var(--text-main); }
.tab-btn.active {
  background: var(--bg-card);
  color: #fff;
  border-color: var(--border-color);
}

/* Cards & Grids */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 18px 20px;
  margin-bottom: 18px;
}
.card-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Stats Row */
.statsline {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 13px;
}
.statsline span { color: var(--text-muted); }
.statsline b { color: var(--text-main); margin-left: 4px; }
.statsline b.pos { color: var(--accent-green); }
.statsline b.neg { color: var(--accent-red); }

/* Form Controls */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-bottom: 16px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}
input, select, textarea {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 8px 12px;
  color: var(--text-main);
  font-size: 13px;
  outline: none;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--border-focus);
}

/* Buttons */
.btn {
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.btn-primary {
  background: var(--accent-blue);
  color: #fff;
}
.btn-primary:hover { background: #1d4ed8; }
.btn-success { background: #15803d; color: #fff; }
.btn-success:hover { background: #166534; }
.btn-danger { background: #b91c1c; color: #fff; }
.btn-danger:hover { background: #991b1b; }
.btn-secondary {
  background: var(--bg-input);
  border-color: var(--border-color);
  color: var(--text-main);
}
.btn-secondary:hover { background: var(--border-color); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Tables */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th {
  background: var(--bg-input);
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
}
td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-color);
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(255, 255, 255, 0.02); }

/* Terminal Log Window */
.terminal {
  background: #080c14;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  height: 280px;
  overflow-y: auto;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
}
.log-line { white-space: pre-wrap; word-break: break-all; }
.log-ERROR { color: #f87171; }
.log-WARN { color: #fbbf24; }
.log-TRADE { color: #4ade80; }
.log-INFO { color: #cbd5e1; }
.log-HDR { color: #f97316; }

/* Chart Containers */
.chart-container {
  min-height: 260px;
  width: 100%;
}