:root {
  color-scheme: dark;
  --bg-gradient: linear-gradient(155deg, #071021 0%, #0f172a 55%, #182a46 100%);
  --bg-card: rgba(17, 25, 40, 0.9);
  --bg-card-alt: rgba(22, 32, 52, 0.92);
  --border: rgba(148, 163, 184, 0.18);
  --border-strong: rgba(59, 130, 246, 0.38);
  --accent: #3b82f6;
  --accent-soft: rgba(59, 130, 246, 0.18);
  --accent-strong: rgba(59, 130, 246, 0.35);
  --text-primary: #f8fafc;
  --text-secondary: rgba(203, 213, 225, 0.85);
  --text-muted: rgba(148, 163, 184, 0.75);
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --shadow: 0 32px 60px rgba(8, 15, 28, 0.6);
}

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

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: radial-gradient(circle at top, rgba(56, 189, 248, 0.12), transparent 52%), var(--bg-gradient);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

.app-container {
  max-width: 1480px;
  margin: 0 auto;
  padding: 32px 26px 80px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 18px;
}

.app-header__text h1 {
  margin: 0;
  font-size: clamp(2rem, 2.4vw, 2.6rem);
  letter-spacing: 0.04em;
}

.app-header__text p {
  margin: 6px 0 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 540px;
  line-height: 1.5;
}

.header-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  border: none;
  border-radius: 999px;
  padding: 11px 20px;
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.btn.neutral {
  background: rgba(30, 41, 59, 0.75);
  color: var(--text-primary);
  border: 1px solid rgba(148, 163, 184, 0.22);
}

.btn.neutral[disabled] {
  color: var(--text-muted);
  border-color: rgba(148, 163, 184, 0.15);
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.btn.primary {
  background: linear-gradient(130deg, rgba(59, 130, 246, 0.95), rgba(14, 165, 233, 0.85));
  color: #fff;
  box-shadow: 0 18px 32px rgba(37, 99, 235, 0.45);
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 20px 38px rgba(37, 99, 235, 0.55);
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 26px 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}


.overview-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.overview-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 14px;
}

.overview-updated {
  margin: 6px 0 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.pnl-toggle {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.pnl-toggle__button {
  border: 1px solid rgba(148, 163, 184, 0.28);
  background: rgba(15, 23, 42, 0.65);
  color: var(--text-primary);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: background 0.2s ease, border 0.2s ease, color 0.2s ease;
}

.pnl-toggle__button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.pnl-toggle__button--active {
  background: rgba(59, 130, 246, 0.18);
  border-color: var(--accent);
  color: var(--accent);
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.overview-block {
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 16px;
  padding: 18px 20px;
  background: var(--bg-card-alt);
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.02);
}

.overview-block__label {
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}

.overview-block__value {
  font-size: clamp(1.4rem, 1.8vw, 1.8rem);
  font-weight: 600;
}

.overview-block__note {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.overview-exchanges {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.overview-exchange-item {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.overview-delta {
  border: 1px solid rgba(56, 189, 248, 0.24);
  border-radius: 16px;
  padding: 16px 18px;
  background: rgba(17, 28, 47, 0.85);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.overview-delta__label {
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.overview-delta__value {
  font-size: clamp(1.6rem, 1.9vw, 1.9rem);
  font-weight: 600;
}

.overview-delta__note {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.performance-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.performance-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 12px;
}

.performance-subtitle {
  margin: 6px 0 0;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.performance-legend {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.performance-chart-wrapper {
  position: relative;
  width: 100%;
  height: 220px;
}

.performance-chart-wrapper::after {
  content: '';
  position: absolute;
  inset: 16px;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.12);
  pointer-events: none;
}

#performance-chart {
  width: 100%;
  height: 220px;
  display: block;
}

.performance-chart-gridline {
  stroke: rgba(148, 163, 184, 0.18);
  stroke-width: 1;
  stroke-dasharray: 4 6;
}

.performance-chart-baseline {
  stroke: rgba(59, 130, 246, 0.35);
  stroke-width: 1.4;
}

.line-total {
  fill: none;
  stroke: rgba(59, 130, 246, 0.9);
  stroke-width: 2.2;
}

.line-benchmark {
  fill: none;
  stroke: rgba(148, 163, 184, 0.7);
  stroke-width: 2;
}

.area-total {
  fill: rgba(59, 130, 246, 0.14);
}

.chart-point {
  fill: var(--bg-card);
  stroke-width: 1.6;
}

.chart-point-total {
  stroke: rgba(59, 130, 246, 0.9);
}

.chart-point-benchmark {
  stroke: rgba(148, 163, 184, 0.7);
}

.strategy-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.strategy-card__header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.strategy-card__period {
  font-size: 0.82rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.strategy-table {
  width: 100%;
  border-collapse: collapse;
}

.strategy-table th,
.strategy-table td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
  text-align: left;
}

.strategy-value {
  font-weight: 600;
}

.strategy-table th {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.strategy-table tbody tr:last-child td {
  border-bottom: none;
}

.strategy-table-empty {
  text-align: center;
  color: var(--text-muted);
}

.strategy-value-positive {
  color: var(--success);
}

.strategy-value-negative {
  color: var(--danger);
}

.sessions-card {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.info-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.info-card__title {
  margin: 0;
  font-size: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.info-card__text {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.6;
}

.info-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.info-list li {
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 14px;
  padding: 12px 16px;
  background: rgba(15, 25, 42, 0.95);
  line-height: 1.5;
}

.info-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.info-tile {
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 14px;
  background: rgba(9, 15, 25, 0.9);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.info-tile h3 {
  margin: 0;
  font-size: 1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.info-tile p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.5;
}

.sessions-header {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.sessions-header h2 {
  margin: 0;
  font-size: 1.15rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.sessions-meta {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.session-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.session {
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 18px;
  background: rgba(14, 20, 33, 0.9);
  overflow: hidden;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

.session.is-expanded {
  border-color: var(--accent-strong);
  box-shadow: 0 14px 34px rgba(14, 165, 233, 0.25);
}

.session-toggle {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  background: transparent;
  border: none;
  color: inherit;
  cursor: pointer;
  text-align: left;
}

.session-toggle:hover {
  background: rgba(59, 130, 246, 0.08);
}

.session-title {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.session-symbol {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.session-meta {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}

.session-status {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.session-status .status-pill {
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  background: rgba(59, 130, 246, 0.12);
  color: var(--accent);
  font-weight: 600;
}

.session-caret {
  width: 16px;
  height: 16px;
  border: 2px solid var(--accent);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  transition: transform 0.25s ease;
}

.session.is-expanded .session-caret {
  transform: rotate(-135deg);
}

.session-body {
  display: none;
  border-top: 1px solid rgba(148, 163, 184, 0.16);
  background: rgba(11, 19, 33, 0.92);
}

.session.is-expanded .session-body {
  display: block;
}

.strategy-list {
  display: grid;
  gap: 14px;
  padding: 18px 24px 22px;
}

.strategy {
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 14px;
  padding: 18px 20px;
  background: rgba(9, 15, 25, 0.95);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.strategy-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.strategy-name {
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.strategy-status {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.strategy-status.is-long {
  color: var(--success);
}

.strategy-status.is-hold {
  color: var(--accent);
}

.strategy-status.is-warn {
  color: var(--warning);
}

.strategy-reason {
  font-size: 0.85rem;
  line-height: 1.5;
  color: rgba(226, 232, 240, 0.9);
}

.strategy-meta {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}

.footer {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.footer a {
  color: var(--accent);
}

.empty-state {
  padding: 56px 32px;
  text-align: center;
  border: 1px dashed rgba(148, 163, 184, 0.25);
  border-radius: 16px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

@media (max-width: 960px) {
  .app-container {
    padding: 26px 18px 64px;
  }

  .card {
    padding: 22px 22px;
  }
}

@media (max-width: 640px) {
  .app-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .session-toggle {
    padding: 18px;
  }

  .strategy-list {
    padding: 16px 18px 20px;
  }
}
.overview-note {
  font-size: 0.8rem;
  color: var(--text-secondary);
}