/* ============================================================
   ncrptx TRADE — BINANCE-INSPIRED TRADING UI
   ============================================================ */

:root {
  --bg: #0b0e11;
  --bg2: #161a1e;
  --bg3: #1e2329;
  --bg4: #2b3139;
  --green: #0ecb81;
  --red: #f6465d;
  --yellow: #f0b90b;
  --text: #eaecef;
  --muted: #848e9c;
  --border: #2b3139;
  --font: 'Inter', -apple-system, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; overflow: hidden; }
body { background: var(--bg); color: var(--text); font-family: var(--font); font-size: 12px; }

/* ---- NAV ---- */
.top-nav {
  height: 48px; background: var(--bg2); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 16px; flex-shrink: 0; position: relative; z-index: 100;
}

.nav-left { display: flex; align-items: center; gap: 12px; }
.nav-logo { color: var(--yellow); font-weight: 800; font-size: 1.1rem; text-decoration: none; letter-spacing: -0.5px; }
.nav-divider { width: 1px; height: 20px; background: var(--border); }
.nav-section { color: var(--muted); font-size: 0.8rem; font-weight: 500; }

.pair-info { display: flex; align-items: center; gap: 24px; }
.pair-selector { display: flex; align-items: center; gap: 6px; cursor: pointer; padding: 4px 8px; border-radius: 4px; transition: background 0.2s; }
.pair-selector:hover { background: var(--bg4); }
.pair-name { font-size: 1rem; font-weight: 700; }
.pair-arrow { color: var(--muted); font-size: 0.7rem; }
.pair-stats { display: flex; align-items: center; gap: 20px; }
.pair-price { font-size: 1.1rem; font-weight: 700; color: var(--green); }
.pair-change { font-size: 0.8rem; font-weight: 600; }
.pair-stat { display: flex; flex-direction: column; }
.pair-stat span:first-child { color: var(--muted); font-size: 0.7rem; }
.pair-stat span:last-child { font-size: 0.8rem; font-weight: 600; }

.nav-right { display: flex; gap: 8px; }
.nav-btn { background: var(--yellow); color: var(--bg); padding: 6px 16px; border-radius: 4px; font-weight: 700; font-size: 0.8rem; text-decoration: none; transition: opacity 0.2s; }
.nav-btn:hover { opacity: 0.85; }
.nav-btn-outline { background: transparent; color: var(--text); border: 1px solid var(--border); }
.nav-btn-outline:hover { border-color: var(--yellow); color: var(--yellow); opacity: 1; }

.trade-back-btn {
  color: var(--muted); text-decoration: none; font-size: 0.8rem;
  font-weight: 600; padding: 5px 10px; border-radius: 5px;
  border: 1px solid var(--border); transition: all 0.2s; white-space: nowrap;
}
.trade-back-btn:hover { color: var(--text); border-color: var(--text); }

.trade-sub-btn {
  color: var(--muted); text-decoration: none; font-size: 0.8rem;
  font-weight: 600; padding: 5px 10px; border-radius: 5px;
  border: 1px solid var(--border); transition: all 0.2s;
}
.trade-sub-btn:hover { color: var(--yellow); border-color: var(--yellow); }

.positive { color: var(--green); }
.negative { color: var(--red); }

/* ---- PAIR DROPDOWN ---- */
.pair-menu {
  position: absolute; top: 48px; left: 80px; z-index: 200;
  background: var(--bg2); border: 1px solid var(--border); border-radius: 4px;
  width: 360px; display: none; box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.pair-menu.open { display: block; }
.pair-menu-search input {
  width: 100%; background: var(--bg3); border: none; border-bottom: 1px solid var(--border);
  padding: 10px 12px; color: var(--text); outline: none; font-family: var(--font); font-size: 12px;
}
.pair-menu-tabs { display: flex; padding: 8px; gap: 4px; border-bottom: 1px solid var(--border); }
.pair-tab { padding: 4px 12px; border-radius: 4px; cursor: pointer; color: var(--muted); transition: all 0.2s; }
.pair-tab.active, .pair-tab:hover { background: var(--bg4); color: var(--text); }
.pair-list { max-height: 300px; overflow-y: auto; }
.pair-list-item {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  padding: 8px 12px; cursor: pointer; transition: background 0.1s;
}
.pair-list-item:hover { background: var(--bg4); }
.pair-list-item .pl-name { font-weight: 600; }
.pair-list-item .pl-price { text-align: right; }
.pair-list-item .pl-change { text-align: right; font-weight: 600; }

/* ---- LAYOUT ---- */
.trade-layout {
  display: grid;
  grid-template-columns: 180px 1fr 200px 220px;
  grid-template-rows: 1fr 120px 200px;
  height: calc(100vh - 48px);
  gap: 2px; background: var(--bg); padding: 2px;
}

.panel { background: var(--bg2); overflow: hidden; display: flex; flex-direction: column; }

.panel-pairs { grid-row: 1 / 3; }
.panel-chart { grid-column: 2; grid-row: 1 / 3; }
.panel-orderbook { grid-row: 1 / 3; }
.panel-order { grid-row: 1 / 3; }
.panel-trades { display: none; }
.panel-bottom { grid-column: 2 / 5; grid-row: 3; }

/* ---- PANEL COMMON ---- */
.panel-title { padding: 10px 12px; font-weight: 600; border-bottom: 1px solid var(--border); color: var(--text); font-size: 12px; }
.panel-tabs { display: flex; border-bottom: 1px solid var(--border); }
.ptab { padding: 10px 12px; cursor: pointer; color: var(--muted); transition: all 0.2s; border-bottom: 2px solid transparent; }
.ptab.active { color: var(--text); border-bottom-color: var(--yellow); }
.ptab:hover { color: var(--text); }

/* ---- PAIRS SIDEBAR ---- */
.pairs-search input {
  width: 100%; background: var(--bg3); border: none; border-bottom: 1px solid var(--border);
  padding: 7px 10px; color: var(--text); outline: none; font-size: 11px; font-family: var(--font);
}
.pairs-header {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  padding: 6px 8px; color: var(--muted); font-size: 10px;
  border-bottom: 1px solid var(--border);
}
.pairs-list { overflow-y: auto; flex: 1; }
.pair-row {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  padding: 6px 8px; cursor: pointer; transition: background 0.1s;
}
.pair-row:hover { background: var(--bg3); }
.pair-row.active { background: var(--bg4); }
.pr-name { font-weight: 600; font-size: 11px; }
.pr-base { color: var(--muted); font-size: 10px; }
.pr-price { text-align: right; font-size: 11px; }
.pr-change { text-align: right; font-weight: 600; font-size: 10px; }

/* ---- CHART ---- */
.panel-chart { position: relative; }
.chart-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 12px; border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.chart-timeframes { display: flex; gap: 2px; }
.tf {
  padding: 4px 8px; cursor: pointer; border-radius: 3px;
  color: var(--muted); transition: all 0.2s;
}
.tf.active, .tf:hover { background: var(--bg4); color: var(--text); }
.chart-indicators { display: flex; gap: 4px; }
.indicator-btn {
  padding: 3px 8px; border-radius: 3px; cursor: pointer;
  background: var(--bg3); color: var(--muted); font-size: 11px; transition: all 0.2s;
}
.indicator-btn:hover { background: var(--bg4); color: var(--text); }

#priceChart { flex: 1; width: 100% !important; }
#volumeChart { height: 60px !important; width: 100% !important; flex-shrink: 0; border-top: 1px solid var(--border); }

/* ---- ORDER BOOK ---- */
.ob-header {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  padding: 6px 12px; color: var(--muted); font-size: 10px;
  border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.ob-asks { flex: 1; overflow: hidden; display: flex; flex-direction: column; justify-content: flex-end; }
.ob-bids { flex: 1; overflow: hidden; }
.ob-spread {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 12px; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  background: var(--bg3); flex-shrink: 0;
}
#ob-price { font-size: 1rem; font-weight: 700; color: var(--green); }
.ob-spread-pct { font-size: 11px; }

.ob-row {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  padding: 2px 12px; cursor: pointer; position: relative; transition: background 0.1s;
}
.ob-row:hover { background: var(--bg4); }
.ob-row .ob-bar {
  position: absolute; top: 0; right: 0; bottom: 0;
  opacity: 0.15; pointer-events: none;
}
.ob-row.ask .ob-bar { background: var(--red); }
.ob-row.bid .ob-bar { background: var(--green); }
.ob-row.ask .ob-col-price { color: var(--red); font-weight: 600; }
.ob-row.bid .ob-col-price { color: var(--green); font-weight: 600; }
.ob-col-price, .ob-col-amt, .ob-col-total { font-size: 11px; position: relative; z-index: 1; }
.ob-col-amt, .ob-col-total { text-align: right; color: var(--text); }

/* ---- ORDER FORM ---- */
.order-tabs {
  display: flex; border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.otab {
  flex: 1; padding: 12px; text-align: center; cursor: pointer;
  font-weight: 600; color: var(--muted); transition: all 0.2s;
  border-bottom: 2px solid transparent;
}
.otab.buy.active { color: var(--green); border-bottom-color: var(--green); }
.otab.sell.active { color: var(--red); border-bottom-color: var(--red); }
.otab:hover { color: var(--text); }

.order-type-tabs { display: flex; padding: 8px; gap: 4px; border-bottom: 1px solid var(--border); flex-shrink: 0; }
.otyp { padding: 4px 10px; border-radius: 4px; cursor: pointer; color: var(--muted); transition: all 0.2s; font-size: 11px; }
.otyp.active, .otyp:hover { background: var(--bg4); color: var(--text); }

.order-form { padding: 12px; display: flex; flex-direction: column; gap: 10px; flex: 1; overflow-y: auto; }
.order-balance { display: flex; justify-content: space-between; color: var(--muted); font-size: 11px; }
.order-balance span:last-child { color: var(--text); font-weight: 600; }

.order-field label { display: block; color: var(--muted); font-size: 10px; margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.5px; }
.order-input-wrap {
  display: flex; align-items: center;
  background: var(--bg3); border: 1px solid var(--border); border-radius: 4px;
  transition: border-color 0.2s;
}
.order-input-wrap:focus-within { border-color: var(--yellow); }
.order-input-wrap input {
  flex: 1; background: none; border: none; outline: none; padding: 8px 10px;
  color: var(--text); font-family: var(--font); font-size: 12px;
}
.order-unit { padding: 0 10px; color: var(--muted); font-size: 11px; font-weight: 600; border-left: 1px solid var(--border); }

.order-pct-row { display: grid; grid-template-columns: repeat(4,1fr); gap: 4px; }
.pct-btn {
  text-align: center; padding: 5px; background: var(--bg3); border-radius: 4px;
  cursor: pointer; color: var(--muted); font-size: 11px; transition: all 0.2s;
  border: 1px solid var(--border);
}
.pct-btn:hover { background: var(--bg4); color: var(--text); }

.order-btn {
  width: 100%; padding: 12px; border: none; border-radius: 4px;
  font-weight: 700; font-size: 13px; cursor: pointer; transition: opacity 0.2s;
  margin-top: auto;
}
.order-btn.buy { background: var(--green); color: #fff; }
.order-btn.sell { background: var(--red); color: #fff; }
.order-btn:hover { opacity: 0.85; }

/* ---- RECENT TRADES ---- */
.trades-header {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  padding: 6px 12px; color: var(--muted); font-size: 10px;
  border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.trades-list { overflow-y: auto; flex: 1; }
.trade-row {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  padding: 3px 12px;
}
.trade-row .tr-price { font-weight: 600; font-size: 11px; }
.trade-row .tr-amt, .trade-row .tr-time { font-size: 10px; text-align: right; color: var(--muted); }

/* ---- BOTTOM PANEL ---- */
.bottom-tabs { display: flex; border-bottom: 1px solid var(--border); flex-shrink: 0; }
.btab {
  padding: 10px 16px; cursor: pointer; color: var(--muted);
  border-bottom: 2px solid transparent; transition: all 0.2s; font-size: 12px;
}
.btab.active { color: var(--text); border-bottom-color: var(--yellow); }
.btab:hover { color: var(--text); }
.bottom-content { flex: 1; overflow-y: auto; }
.empty-orders { display: flex; align-items: center; justify-content: center; height: 100%; color: var(--muted); }

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--bg4); border-radius: 2px; }