:root {
  --bg-dark: #070a0f;
  --bg-card: #0d131f;
  --bg-hover: #151d2f;
  --bg-glass: rgba(13, 19, 31, 0.75);
  --border: #1e293b;
  --border-accent: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --cyan: #00f0ff;
  --gold: #f59e0b;
  --green: #10b981;
  --green-glow: rgba(16, 185, 129, 0.2);
  --red: #ef4444;
  --red-glow: rgba(239, 68, 68, 0.2);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-sans);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* App Header */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-logo {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, #00f0ff, #3b82f6);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  color: #070a0f;
  font-size: 16px;
}

.brand-text {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.brand-text span {
  color: var(--cyan);
}

.live-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.dot-pulse {
  width: 8px;
  height: 8px;
  background-color: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Ticker Bar */
.ticker-bar {
  display: flex;
  overflow-x: auto;
  gap: 12px;
  padding: 10px 18px;
  background: #090e18;
  border-bottom: 1px solid var(--border);
  scrollbar-width: none;
}
.ticker-bar::-webkit-scrollbar { display: none; }

.ticker-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  font-family: var(--font-mono);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.ticker-item:hover, .ticker-item.active {
  border-color: var(--cyan);
  background: var(--bg-hover);
}

.ticker-item .sym { font-weight: 700; color: var(--text-primary); }
.ticker-item .price { color: var(--text-secondary); }
.ticker-item .price.up { color: var(--green); }
.ticker-item .price.down { color: var(--red); }

/* Layout Grid */
.main-content {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 16px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

@media (min-width: 900px) {
  .main-content {
    grid-template-columns: 1.4fr 1fr;
  }
}

/* Chart Card */
.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  display: flex;
  flex-direction: column;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.panel-title {
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tf-selector {
  display: flex;
  gap: 4px;
}

.tf-btn {
  background: #111827;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 6px;
  cursor: pointer;
}

.tf-btn.active, .tf-btn:hover {
  background: var(--cyan);
  color: #070a0f;
  border-color: var(--cyan);
}

#chartBox {
  height: 380px;
  width: 100%;
  border-radius: 10px;
  overflow: hidden;
  background: #06090e;
  position: relative;
}

/* Signal Filter Bar */
.filter-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
  overflow-x: auto;
  scrollbar-width: none;
}
.filter-bar::-webkit-scrollbar { display: none; }

.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn.active, .filter-btn:hover {
  background: var(--cyan);
  color: #070a0f;
  border-color: var(--cyan);
}

/* Signals Feed */
.signals-feed {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.signal-card {
  background: #0a0f1a;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.2s;
  position: relative;
  overflow: hidden;
}

.signal-card:hover {
  border-color: var(--border-accent);
}

.signal-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 4px;
}

.signal-card.buy::before { background: var(--green); box-shadow: 0 0 10px var(--green); }
.signal-card.sell::before { background: var(--red); box-shadow: 0 0 10px var(--red); }

.sig-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sig-meta {
  display: flex;
  align-items: center;
  gap: 8px;
}

.badge {
  font-size: 11px;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 5px;
  letter-spacing: 0.5px;
  font-family: var(--font-mono);
}

.badge.buy { background: var(--green-glow); color: var(--green); border: 1px solid var(--green); }
.badge.sell { background: var(--red-glow); color: var(--red); border: 1px solid var(--red); }

.sig-ticker {
  font-size: 15px;
  font-weight: 800;
}

.sig-tf {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.sig-time {
  font-size: 11px;
  color: var(--text-muted);
}

/* Multi-Tier Entry Zones */
.sig-zone-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
}

.zone-header {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  display: flex;
  justify-content: space-between;
}

.tiers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.tier-item {
  background: rgba(0, 0, 0, 0.3);
  padding: 6px;
  border-radius: 6px;
  text-align: center;
  font-family: var(--font-mono);
  border: 1px solid transparent;
}

.tier-item.high { border-color: rgba(245, 158, 11, 0.3); }
.tier-item.med { border-color: rgba(59, 130, 246, 0.3); }
.tier-item.low { border-color: rgba(16, 185, 129, 0.3); }

.tier-label { font-size: 9px; color: var(--text-muted); text-transform: uppercase; }
.tier-val { font-size: 12px; font-weight: 700; color: var(--text-primary); margin-top: 2px; }

/* Target / Stop Levels */
.sig-targets {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.target-col, .sl-col {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.level-row {
  display: flex;
  justify-content: space-between;
  padding: 4px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.015);
}

.level-row.hit {
  background: var(--green-glow);
  color: var(--green);
  font-weight: 700;
}

.level-row.sl {
  color: var(--red);
}

/* Footer & Controls */
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 10px;
}

.btn {
  background: var(--cyan);
  color: #070a0f;
  border: none;
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn:hover { opacity: 0.9; }

.btn-secondary {
  background: var(--bg-hover);
  color: var(--text-primary);
  border: 1px solid var(--border);
}