/* ============================================================
   CryptoX — Trading Interface Styles
   ============================================================ */

/* ─── Trade Page Layout ──────────────────────────────────────── */
.trade-page-wrapper {
  display: grid;
  grid-template-columns: 1fr 280px 320px;
  grid-template-rows: auto 1fr auto;
  height: calc(100vh - var(--topbar-height));
  overflow: hidden;
  gap: 0;
  background: var(--bg-primary);
}

/* ─── Pair Header ───────────────────────────────────────────── */
.trade-header {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 12px 20px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.pair-selector-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

select.pair-selector {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  padding: 6px 36px 6px 12px;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23A0AEC0' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  transition: var(--transition-fast);
}

select.pair-selector:focus { border-color: var(--color-brand); outline: none; }

.pair-price-display {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.current-price {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.price-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.price-stat-label {
  font-size: 0.68rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.price-stat-value {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}

/* ─── Chart Section ─────────────────────────────────────────── */
.chart-section {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  overflow: hidden;
  background: var(--bg-primary);
}

.timeframe-bar {
  display: flex;
  align-items: center;
  padding: 8px 16px;
  gap: 2px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.tf-btn {
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
}

.tf-btn:hover { color: var(--text-secondary); background: var(--bg-elevated); }
.tf-btn.active { background: var(--color-brand); color: white; }

.chart-area {
  flex: 1;
  position: relative;
  min-height: 400px;
}

/* ─── Order Book ─────────────────────────────────────────────── */
.orderbook-section {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  overflow: hidden;
  background: var(--bg-surface);
}

.orderbook-header {
  padding: 12px 16px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  flex-shrink: 0;
}

.ob-labels {
  display: flex;
  justify-content: space-between;
  padding: 4px 16px;
  font-size: 0.68rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.orderbook-asks { flex: 1; overflow-y: auto; display: flex; flex-direction: column-reverse; }
.orderbook-bids { flex: 1; overflow-y: auto; }

.ob-spread {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}

.ob-row {
  display: flex;
  align-items: center;
  padding: 4px 16px;
  gap: 8px;
  font-size: 0.8rem;
  font-family: 'Courier New', monospace;
  cursor: pointer;
  position: relative;
  transition: background 0.1s ease;
}

.ob-row:hover { background: rgba(255,255,255,0.04); }

.ob-depth-bg {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  opacity: 0.08;
  z-index: 0;
  pointer-events: none;
}

.ob-depth-bg.ask { background: var(--color-red); }
.ob-depth-bg.bid { background: var(--color-green); }

.ob-price { flex: 1; font-weight: 600; position: relative; z-index: 1; }
.ob-price.ask { color: var(--color-red); }
.ob-price.bid { color: var(--color-green); }
.ob-amount { flex: 1; text-align: right; color: var(--text-secondary); position: relative; z-index: 1; }
.ob-total  { flex: 1; text-align: right; color: var(--text-muted);     position: relative; z-index: 1; }

/* ─── Order Form ─────────────────────────────────────────────── */
.order-section {
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  background: var(--bg-surface);
}

.order-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.order-tab {
  flex: 1;
  text-align: center;
  padding: 14px;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.order-tab.buy:hover  { color: var(--color-green); }
.order-tab.sell:hover { color: var(--color-red); }
.order-tab.buy.active  { color: var(--color-green); border-bottom-color: var(--color-green); background: rgba(34,197,94,0.05); }
.order-tab.sell.active { color: var(--color-red);   border-bottom-color: var(--color-red);   background: rgba(239,68,68,0.05); }

.order-form-body { padding: 16px; display: flex; flex-direction: column; gap: 12px; flex: 1; }

.order-type-group {
  display: flex;
  gap: 4px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 3px;
}

.order-type-btn {
  flex: 1;
  padding: 6px 4px;
  border-radius: calc(var(--radius-sm) - 2px);
  font-size: 0.75rem;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  color: var(--text-muted);
  background: transparent;
  border: none;
  transition: var(--transition-fast);
}

.order-type-btn.active { background: var(--color-brand); color: white; }
.order-type-btn:hover:not(.active) { color: var(--text-secondary); }

.available-display {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-muted);
  padding: 4px 0;
}

.available-display .avail-value { color: var(--text-secondary); font-weight: 600; }

.quick-btns {
  display: flex;
  gap: 4px;
  margin-top: 6px;
}

.quick-btn {
  flex: 1;
  padding: 5px 4px;
  border-radius: var(--radius-xs);
  font-size: 0.72rem;
  font-weight: 700;
  text-align: center;
  cursor: pointer;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  transition: var(--transition-fast);
}

.quick-btn:hover { border-color: var(--color-brand); color: var(--color-brand); }

.order-total-box {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
}

.order-total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 3px 0;
  font-size: 0.8rem;
}

.order-total-row .label { color: var(--text-muted); }
.order-total-row .value { color: var(--text-secondary); font-weight: 600; font-variant-numeric: tabular-nums; }
.order-total-row.total .value { color: var(--text-primary); font-size: 1rem; font-family: 'Space Grotesk', sans-serif; }

.place-order-btn {
  width: 100%;
  padding: 14px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: 'Inter', sans-serif;
}

.place-order-btn.buy {
  background: var(--gradient-green);
  color: white;
  box-shadow: 0 2px 12px rgba(34,197,94,0.3);
}

.place-order-btn.buy:hover { box-shadow: var(--shadow-green); transform: translateY(-1px); }

.place-order-btn.sell {
  background: var(--gradient-red);
  color: white;
  box-shadow: 0 2px 12px rgba(239,68,68,0.3);
}

.place-order-btn.sell:hover { box-shadow: var(--shadow-red); transform: translateY(-1px); }

/* ─── Trade Bottom Panel ──────────────────────────────────────── */
.trade-bottom {
  grid-column: 1 / -1;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  max-height: 240px;
  display: flex;
  flex-direction: column;
}

.bottom-tab-bar {
  display: flex;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.bottom-tab {
  padding: 10px 20px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.bottom-tab:hover { color: var(--text-secondary); }
.bottom-tab.active { color: var(--text-primary); border-bottom-color: var(--color-brand); }

.bottom-panel-content {
  overflow-y: auto;
  flex: 1;
}

.trade-row {
  display: grid;
  grid-template-columns: 100px repeat(4, 1fr) 80px;
  padding: 8px 20px;
  font-size: 0.8rem;
  border-bottom: 1px solid var(--border);
  align-items: center;
  font-variant-numeric: tabular-nums;
}

.trade-row:last-child { border-bottom: none; }
.trade-row.header { color: var(--text-muted); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; }

/* ─── Login Prompt (for guests) ─────────────────────────────── */
.trade-login-prompt {
  padding: 24px 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.trade-login-prompt svg { width: 40px; height: 40px; color: var(--text-muted); }
.trade-login-prompt h4 { font-size: 0.9rem; }
.trade-login-prompt p { font-size: 0.8rem; color: var(--text-muted); }

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .trade-page-wrapper { grid-template-columns: 1fr 260px; grid-template-rows: auto 1fr auto; }
  .order-section { grid-column: 1 / -1; height: auto; max-height: none; order: 3; }
  .trade-bottom { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  .trade-page-wrapper { grid-template-columns: 1fr; }
  .orderbook-section { display: none; }
  .chart-area { min-height: 300px; }
}