:root {
  --bg: #f4f2ee;
  --surface: #faf9f7;
  --surface-2: #f0eeea;
  --border: #e2dfd8;
  --text: #2c2a26;
  --text-dim: #7a756c;
  --muted: #a8a296;
  --green: #1a8f5a;
  --green-bg: #e6f5ed;
  --red: #c43e3e;
  --red-bg: #fceaea;
  --blue: #2b6cb0;
  --amber: #b8860b;
  --font: 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', monospace;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.app { min-height: 100vh; display: flex; flex-direction: column; }

/* Header */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  gap: 16px;
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 8px; }
.brand-icon { color: var(--blue); font-size: 20px; }
.brand-name { font-weight: 700; font-size: 18px; }

.mode-selector { display: flex; align-items: center; gap: 10px; }
.mode-selector .label {
  font-size: 12px; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: 0.05em;
}

.mode-buttons {
  display: flex; gap: 4px;
  background: var(--surface-2); padding: 3px;
  border-radius: 8px; border: 1px solid var(--border);
}

.mode-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 14px; border: none; background: transparent;
  color: var(--text-dim); font-family: var(--font);
  font-size: 13px; font-weight: 500; border-radius: 6px; cursor: pointer;
  transition: all 0.15s;
}
.mode-btn:hover { color: var(--text); background: rgba(0,0,0,0.04); }
.mode-btn.active { background: var(--surface); color: var(--text); box-shadow: 0 1px 3px rgba(0,0,0,0.08); }
.mode-btn.active[data-mode="bull"] { color: var(--green); }
.mode-btn.active[data-mode="bear"] { color: var(--red); }

.mode-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); }
.mode-btn[data-mode="bull"] .mode-dot { background: var(--green); }
.mode-btn[data-mode="bear"] .mode-dot { background: var(--red); }

.header-cash { display: flex; flex-direction: column; align-items: flex-end; }
.cash-label { font-size: 11px; color: var(--text-dim); text-transform: uppercase; }
.cash-value { font-family: var(--mono); font-size: 18px; font-weight: 600; color: var(--green); }

/* Layout */
.app-main {
  display: grid;
  grid-template-columns: 1fr 1.2fr 320px;
  gap: 12px; padding: 12px; flex: 1;
}

.left-column, .center-column, .right-column {
  display: flex; flex-direction: column; gap: 12px; min-height: 0;
}

/* Panels */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}

.panel-title {
  font-size: 13px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--text-dim); margin-bottom: 12px;
}

/* Chart */
.chart-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  display: flex; flex-direction: column;
}

.chart-header {
  display: flex; justify-content: space-between;
  align-items: flex-start; margin-bottom: 12px;
}

.ticker { font-size: 20px; font-weight: 700; }
.ticker-sub { font-size: 11px; color: var(--text-dim); }
.price-display { text-align: right; }

.current-price {
  display: block; font-family: var(--mono);
  font-size: 28px; font-weight: 700;
}

.price-change { font-family: var(--mono); font-size: 13px; }
.up { color: var(--green); }
.down { color: var(--red); }

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

#price-chart {
  display: block;
  width: 100%;
  height: 220px;
  border-radius: 6px;
  background: var(--surface-2);
}

/* Share Trading */
.share-stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 8px; margin-bottom: 16px;
}

.stat {
  background: var(--surface-2); border-radius: 6px;
  padding: 10px; text-align: center;
}

.stat-label {
  display: block; font-size: 10px; color: var(--text-dim);
  text-transform: uppercase; margin-bottom: 4px;
}

.stat-value { font-family: var(--mono); font-size: 15px; font-weight: 600; }

.trade-controls { display: flex; flex-direction: column; gap: 12px; }

.qty-input-group label {
  display: block; font-size: 11px; color: var(--text-dim); margin-bottom: 6px;
}

.qty-row { display: flex; gap: 4px; }

.qty-btn {
  width: 36px; background: var(--surface-2);
  border: 1px solid var(--border); color: var(--text);
  border-radius: 6px; cursor: pointer; font-size: 16px;
}

.qty-row input {
  flex: 1; background: var(--surface-2);
  border: 1px solid var(--border); color: var(--text);
  font-family: var(--mono); font-size: 16px;
  text-align: center; border-radius: 6px; padding: 8px;
}

.qty-presets { display: flex; gap: 4px; margin-top: 6px; }

.qty-presets button {
  flex: 1; padding: 4px; background: transparent;
  border: 1px solid var(--border); color: var(--text-dim);
  border-radius: 4px; font-size: 11px; cursor: pointer;
}
.qty-presets button:hover { color: var(--text); border-color: var(--muted); }

.order-summary {
  display: flex; justify-content: space-between;
  font-family: var(--mono); font-size: 13px; color: var(--text-dim);
  padding: 8px 0; border-top: 1px solid var(--border);
}

.trade-buttons { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

.btn {
  padding: 12px; border: none; border-radius: 8px;
  font-family: var(--font); font-size: 14px; font-weight: 600;
  cursor: pointer; transition: opacity 0.15s;
}
.btn:disabled { opacity: 0.35; cursor: not-allowed; }

.btn-buy { background: var(--green-bg); color: var(--green); border: 1px solid rgba(26,143,90,0.25); }
.btn-buy:hover:not(:disabled) { background: #d4eddf; }

.btn-sell { background: var(--red-bg); color: var(--red); border: 1px solid rgba(196,62,62,0.25); }
.btn-sell:hover:not(:disabled) { background: #f8d8d8; }

.btn-mini {
  padding: 3px 8px; font-size: 11px; border-radius: 4px;
  border: none; cursor: pointer; font-weight: 600;
}

/* Options */
.options-panel { flex: 1; display: flex; flex-direction: column; min-height: 0; overflow: hidden; }

.options-header { display: flex; justify-content: space-between; align-items: center; }
.options-header .panel-title { margin-bottom: 0; }

.contracts-input { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.contracts-input label { font-size: 11px; color: var(--text-dim); }
.contracts-input input {
  width: 48px; background: var(--surface-2);
  border: 1px solid var(--border); color: var(--text);
  font-family: var(--mono); text-align: center;
  border-radius: 4px; padding: 4px; font-size: 13px;
}
.contracts-hint { font-size: 10px; color: var(--text-dim); width: 100%; }

.expiry-tabs, .option-type-tabs { display: flex; gap: 4px; margin-top: 12px; flex-wrap: wrap; }

.expiry-tabs button, .option-type-tabs button {
  padding: 5px 10px; background: transparent;
  border: 1px solid var(--border); color: var(--text-dim);
  border-radius: 5px; font-size: 11px; cursor: pointer; font-family: var(--mono);
}
.expiry-tabs button.active, .option-type-tabs button.active {
  background: var(--surface-2); color: var(--text); border-color: var(--muted);
}
.option-type-tabs button.active.call { color: var(--green); border-color: rgba(26,143,90,0.4); }
.option-type-tabs button.active.put { color: var(--red); border-color: rgba(196,62,62,0.4); }

.spot-line { margin: 10px 0 6px; font-size: 12px; color: var(--text-dim); font-family: var(--mono); }
.spot-line strong { color: var(--amber); }

.orderbook {
  flex: 1; overflow-y: auto; min-height: 0;
  border: 1px solid var(--border); border-radius: 6px;
}

.orderbook-header {
  display: grid;
  grid-template-columns: 52px 48px 48px 56px 64px 44px 36px 36px;
  gap: 4px; padding: 6px 8px;
  background: var(--surface-2);
  font-size: 10px; color: var(--text-dim);
  text-transform: uppercase; position: sticky; top: 0; z-index: 1;
}

.orderbook-body { font-family: var(--mono); font-size: 10px; }

.orderbook-row {
  display: grid;
  grid-template-columns: 52px 48px 48px 56px 64px 44px 36px 36px;
  gap: 4px; padding: 5px 8px;
  border-bottom: 1px solid var(--border);
  align-items: center;
}
.orderbook-row:hover { background: rgba(0,0,0,0.02); }
.orderbook-row.itm { background: rgba(184,134,11,0.06); }
.orderbook-row .strike { font-weight: 600; }
.orderbook-row .bid { color: var(--green); }
.orderbook-row .ask { color: var(--red); }
.orderbook-row .breakeven { color: var(--blue); }
.orderbook-row .total { font-weight: 600; }
.orderbook-row .total.over-budget { color: var(--red); }
.orderbook-row .exp { color: var(--text-dim); font-size: 10px; }
.orderbook-row .btn-buy:disabled { opacity: 0.35; cursor: not-allowed; }

.open-options { margin-top: 12px; border-top: 1px solid var(--border); padding-top: 12px; }
.open-options h4 { font-size: 11px; color: var(--text-dim); text-transform: uppercase; margin-bottom: 8px; }

.option-position {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px; background: var(--surface-2);
  border-radius: 6px; margin-bottom: 6px;
  font-family: var(--mono); font-size: 11px;
}

.pos-info { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.pos-side { font-weight: 700; font-size: 10px; padding: 2px 5px; border-radius: 3px; }
.pos-side.long { background: var(--green-bg); color: var(--green); }
.pos-side.short { background: var(--red-bg); color: var(--red); }
.pos-type { font-weight: 700; font-size: 10px; padding: 2px 5px; border-radius: 3px; }
.pos-type.call { background: var(--green-bg); color: var(--green); }
.pos-type.put { background: var(--red-bg); color: var(--red); }
.pos-qty { color: var(--text-dim); }
.pos-exp { color: var(--amber); font-size: 10px; }
.pos-entry { color: var(--text-dim); }
.pos-breakeven { color: var(--blue); font-weight: 600; }
.pos-pnl { font-weight: 700; font-size: 11px; }
.pos-pnl.up { color: var(--green); }
.pos-pnl.down { color: var(--red); }
.pos-actions { display: flex; gap: 4px; align-items: center; flex-shrink: 0; }

/* Portfolio */
.portfolio-panel { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.portfolio-header { display: flex; justify-content: space-between; align-items: center; }
.portfolio-header .panel-title { margin-bottom: 0; }

.btn-reset {
  background: transparent; border: 1px solid var(--border);
  color: var(--text-dim); padding: 4px 10px;
  border-radius: 5px; font-size: 11px; cursor: pointer;
}
.btn-reset:hover { color: var(--text); border-color: var(--muted); }

.equity-display { margin: 16px 0; text-align: center; }
.equity-label { display: block; font-size: 11px; color: var(--text-dim); text-transform: uppercase; }
.equity-value { display: block; font-family: var(--mono); font-size: 32px; font-weight: 700; margin: 4px 0; }
.equity-pnl { font-family: var(--mono); font-size: 14px; }

.portfolio-breakdown { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 12px 0; }
.breakdown-row { display: flex; justify-content: space-between; padding: 6px 0; font-size: 13px; }
.breakdown-row span:last-child { font-family: var(--mono); font-weight: 500; }
.breakdown-row small { font-size: 11px; }

.trade-log { flex: 1; min-height: 0; display: flex; flex-direction: column; margin-top: 12px; }
.trade-log h4 { font-size: 11px; color: var(--text-dim); text-transform: uppercase; margin-bottom: 8px; }
.log-list { flex: 1; overflow-y: auto; min-height: 0; }

.log-entry { display: flex; gap: 8px; padding: 5px 0; font-size: 11px; border-bottom: 1px solid var(--border); }
.log-time { font-family: var(--mono); color: var(--text-dim); flex-shrink: 0; }
.log-buy .log-msg { color: var(--green); }
.log-sell .log-msg { color: var(--red); }
.log-expire .log-msg { color: var(--amber); }
.log-empty { color: var(--text-dim); font-size: 12px; text-align: center; padding: 16px; }

@media (max-width: 1100px) {
  .app-main { grid-template-columns: 1fr 1fr; }
  .right-column { grid-column: 1 / -1; }
}
@media (max-width: 700px) {
  .app-main { grid-template-columns: 1fr; }
}