/* ── Reset & base ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:         #0d1117;
  --bg2:        #161b22;
  --bg3:        #1c2128;
  --border:     #30363d;
  --text:       #c9d1d9;
  --text-dim:   #6e7681;
  --accent:     #58a6ff;
  --green:      #3fb950;
  --red:        #f85149;
  --orange:     #d29922;
  --purple:     #bc8cff;
  --header-h:   44px;
  --footer-h:   26px;
  --cell-hdr-h: 30px;
  --panel-w:    300px;
  font-size: 13px;
  font-family: 'Segoe UI', system-ui, sans-serif;
}

body {
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── Header ──────────────────────────────────────────────────── */
header {
  height: var(--header-h);
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  flex-shrink: 0;
}
.logo { font-weight: 700; font-size: 14px; color: var(--accent); letter-spacing: .4px; }
.header-right { display: flex; align-items: center; gap: 12px; }

.conn-status { font-size: 11px; color: var(--text-dim); }
.conn-status.connected    { color: var(--green); }
.conn-status.disconnected { color: var(--red); }

.btn-reset {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: 4px;
  padding: 3px 8px;
  cursor: pointer;
  font-size: 11px;
  transition: all .15s;
}
.btn-reset:hover   { border-color: var(--red);   color: var(--red); }
.btn-restore:hover { border-color: var(--green); color: var(--green); }
.btn-clear:hover   { border-color: var(--red);   color: var(--red); font-weight: 700; }

/* ── Main layout ─────────────────────────────────────────────── */
main {
  flex: 1;
  display: flex;
  overflow: hidden;
  min-height: 0;
}

/* ── 2×2 Chart grid ──────────────────────────────────────────── */
.chart-grid {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  min-width: 0;
  min-height: 0;
}

.grid-cell {
  background: var(--bg);
  display: flex;
  flex-direction: column;
  cursor: pointer;
  position: relative;
  min-width: 0;
  min-height: 0;
}

.grid-cell.active {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  z-index: 1;
}

.grid-cell:hover:not(.active) { outline: 1px solid var(--border); outline-offset: -1px; }

/* Cell header */
.cell-header {
  height: var(--cell-hdr-h);
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 10px;
  gap: 8px;
  flex-shrink: 0;
  pointer-events: none;
}
.cell-sym   { font-weight: 700; font-size: 12px; min-width: 52px; }
.cell-price { font-size: 12px; font-weight: 600; color: var(--text); margin-left: auto; }
.cell-bar   { font-size: 10px; color: var(--text-dim); }

.cell-trend-badge {
  font-size: 9px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 10px;
  background: var(--bg3);
  border: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: .4px;
  white-space: nowrap;
}
.cell-trend-badge.bull        { color: var(--green);  border-color: var(--green); }
.cell-trend-badge.strong_bull { color: var(--green);  border-color: var(--green); background: #1a2e1a; }
.cell-trend-badge.ail         { color: #7fff7f;       border-color: #7fff7f;      background: #0d2e0d; font-weight: 900; }
.cell-trend-badge.bear        { color: var(--red);    border-color: var(--red); }
.cell-trend-badge.strong_bear { color: var(--red);    border-color: var(--red);   background: #2e1a1a; }
.cell-trend-badge.ais         { color: #ff7f7f;       border-color: #ff7f7f;      background: #2e0d0d; font-weight: 900; }
.cell-trend-badge.trading_range { color: var(--orange); border-color: var(--orange); }

.cell-lasttime {
  font-size: 10px;
  color: var(--text-dim);
  white-space: nowrap;
  margin-left: 4px;
}
.cell-lasttime.stale { color: var(--orange); }

.cell-session {
  font-size: 9px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 8px;
  text-transform: uppercase;
  letter-spacing: .3px;
  white-space: nowrap;
}
.cell-session.open   { background: #1a2e1a; color: var(--green); border: 1px solid var(--green); }
.cell-session.closed { background: var(--bg3); color: var(--text-dim); border: 1px solid var(--border); }

.cell-pressure {
  font-size: 9px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 8px;
  white-space: nowrap;
  letter-spacing: .3px;
  color: var(--text-dim);
  background: var(--bg3);
  border: 1px solid var(--border);
}
.cell-pressure.extremely_urgent { color: #ff7b00; background: #2a1a00; border-color: #ff7b00; }
.cell-pressure.strong           { color: var(--green); background: #0d2a0d; border-color: var(--green); }
.cell-pressure.weak             { color: var(--text-dim); background: var(--bg3); border-color: var(--border); }

.cell-chart {
  flex: 1;
  min-height: 0;
  overflow: hidden;
  position: relative;
}

.btn-fit {
  position: absolute;
  bottom: 28px;
  right: 52px;
  z-index: 10;
  background: rgba(22, 27, 34, 0.85);
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: 3px;
  padding: 2px 6px;
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  transition: opacity .15s, color .15s, border-color .15s;
  pointer-events: auto;
}
.grid-cell:hover .btn-fit { opacity: 1; }
.btn-fit:hover { color: var(--accent); border-color: var(--accent); }

/* ── Right panel ─────────────────────────────────────────────── */
.panel {
  width: var(--panel-w);
  flex-shrink: 0;
  background: var(--bg2);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
}

.panel-active-header {
  height: 36px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  border-bottom: 1px solid var(--border);
  gap: 8px;
  flex-shrink: 0;
}
#active-sym-label {
  font-weight: 700;
  font-size: 13px;
  color: var(--accent);
  flex: 1;
}

.panel-block {
  border-bottom: 1px solid var(--border);
  padding: 10px 12px;
  flex-shrink: 0;
}
.panel-block--capped { max-height: 150px; overflow-y: auto; }
.panel-block--signals { flex: 1; overflow-y: auto; border-bottom: none; min-height: 120px; }
.panel-block h3 {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .6px;
  color: var(--text-dim);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ── Signal block ────────────────────────────────────────────── */
.signal-block { background: var(--bg3); }
.signal-empty { color: var(--text-dim); font-size: 12px; padding: 6px 0; }

.signal-card { border-radius: 6px; padding: 10px; border: 1px solid var(--border); }
.signal-card.long  { border-color: var(--green); background: #0d1f0d; }
.signal-card.short { border-color: var(--red);   background: #1f0d0d; }

.signal-direction { font-size: 13px; font-weight: 800; letter-spacing: 1px; margin-bottom: 8px; }
.signal-direction.long  { color: var(--green); }
.signal-direction.short { color: var(--red); }

.signal-rows { display: flex; flex-direction: column; gap: 4px; }
.signal-row  { display: flex; justify-content: space-between; font-size: 12px; }
.signal-row .label { color: var(--text-dim); }
.signal-row .value { font-weight: 600; }
.signal-row .value.entry  { color: var(--accent); }
.signal-row .value.tp     { color: var(--green); }
.signal-row .value.sl     { color: var(--red); }
.signal-row .value.rr     { color: var(--purple); }
.signal-row .value.strong   { color: var(--green);    font-weight: 700; }
.signal-row .value.moderate { color: var(--orange); }
.signal-row .value.weak     { color: var(--text-dim); }

.signal-reason {
  margin-top: 8px;
  font-size: 10px;
  color: var(--text-dim);
  line-height: 1.5;
  border-top: 1px solid var(--border);
  padding-top: 6px;
}

/* ── Pattern log ─────────────────────────────────────────────── */
.pattern-count {
  font-size: 10px; background: var(--bg); border: 1px solid var(--border);
  border-radius: 10px; padding: 0 5px; color: var(--text-dim);
}

.pattern-log, .signal-log {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.log-empty { color: var(--text-dim); font-size: 11px; }

.pattern-item {
  display: flex; align-items: center; gap: 6px;
  font-size: 11px; padding: 3px 5px;
  border-radius: 4px; background: var(--bg);
}
.pattern-item .p-label {
  font-weight: 700; font-size: 9px;
  padding: 1px 5px; border-radius: 3px;
  text-align: center; white-space: nowrap;
}
.pattern-item .p-desc  { color: var(--text-dim); flex: 1; font-size: 10px; }
.pattern-item .p-time  { color: var(--text-dim); font-size: 10px; white-space: nowrap; }

.p-label.HH, .p-label.HL, .p-label.DB { background: #1a2e1a; color: var(--green); }
.p-label.LH, .p-label.LL, .p-label.DT { background: #2e1a1a; color: var(--red); }
.p-label.bull-flag, .p-label.PB1, .p-label.PB2 { background: #1a2e1a; color: var(--green); }
.p-label.bear-flag { background: #2e1a1a; color: var(--red); }
.p-label.bo-up, .p-label.bo-down { background: #1a1a2e; color: var(--accent); }
.p-label.fbo-up  { background: #2e1a1a; color: var(--red); }
.p-label.fbo-down { background: #1a2e1a; color: var(--green); }
.p-label.wedge   { background: #2e251a; color: var(--orange); }
.p-label.mm      { background: #1a2e1a; color: var(--green); }

.signal-item {
  font-size: 11px; padding: 4px 5px;
  border-radius: 4px; background: var(--bg);
  display: flex; gap: 6px; align-items: flex-start;
  cursor: pointer; border-left: 2px solid transparent;
  transition: background .1s, border-color .1s;
}
.signal-item:hover  { background: var(--bg2); }
.signal-item.active { background: #1c2333; border-left: 3px solid var(--accent); padding-left: 6px; outline: 1px solid var(--accent); }
.signal-item .s-dir { font-weight: 700; min-width: 38px; font-size: 10px; }
.signal-item .s-dir.long  { color: var(--green); }
.signal-item .s-dir.short { color: var(--red); }
.signal-item .s-detail { color: var(--text-dim); flex: 1; font-size: 10px; line-height: 1.4; }

/* ── Status bar ──────────────────────────────────────────────── */
.status-bar {
  height: var(--footer-h);
  background: var(--bg2);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 16px;
  font-size: 10px;
  color: var(--text-dim);
  flex-shrink: 0;
}

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