:root {
  --bg-color: #121212;
  --surface-color: #1E1E1E;
  --surface-hover: #2C2C2C;
  --text-primary: #E0E0E0;
  --text-secondary: #A0A0A0;
  --accent-color: #BB86FC;
  --accent-secondary: #03DAC6;
  --signal-buy: #00C853;
  --signal-sell: #FF3D00;
  --border-color: #333333;
  --font-family: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* Generic utility */
.hidden { display: none !important; }

* { box-sizing: border-box; }

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  margin: 0;
  -webkit-font-smoothing: antialiased;
}

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

/* Header */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(18, 18, 18, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  padding: 0 16px;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  max-width: 800px;
  margin: 0 auto;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent-color);
  margin: 0;
}

/* Navigation Tabs */
.nav-tabs {
  display: flex;
  background: var(--surface-color);
  padding: 4px;
  border-radius: 12px;
  gap: 4px;
}

.nav-item {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 6px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
}

.nav-item.active {
  background-color: var(--bg-color);
  color: var(--text-primary);
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.icon-btn {
  background: none;
  border: none;
  color: var(--text-primary);
  padding: 8px;
  cursor: pointer;
  border-radius: 50%;
  transition: background 0.2s;
}

.icon-btn:hover {
  background-color: var(--surface-hover);
}

/* Main Content */
.main-content {
  flex: 1;
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
  padding: 16px 0;
}
.main-content.hidden { display: none; }

.feed-container { display: none; flex-direction: column; gap: 12px; padding: 0 16px; }
.feed-container.active { display: flex; }

/* Cards (Bubbles) */
.card {
  background-color: var(--surface-color);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: transform 0.2s, background-color 0.2s;
  cursor: pointer;
}

.card:active {
  transform: scale(0.99);
}

/* Header of the card (Always visible) */
.card-header {
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.card-summary {
  flex: 1;
  min-width: 0; /* Text truncation fix */
}

.card-title {
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.badge {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-buy { background: rgba(0, 200, 83, 0.2); color: var(--signal-buy); }
.badge-sell { background: rgba(255, 61, 0, 0.2); color: var(--signal-sell); }
.badge-info { background: rgba(33, 150, 243, 0.2); color: #2196F3; }

.card-preview {
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.4;
}

.card-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  min-width: 60px;
  max-width: 132px;
  flex-shrink: 0;
}

.card-price {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-mono);
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 132px;
}

.timestamp {
  font-size: 11px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  white-space: normal;
  text-align: right;
  line-height: 1.2;
}

.timestamp .ts-date,
.timestamp .ts-time {
  display: block;
}

/* Summary cards (30m buckets) */
.summary-card {
  border-radius: 12px;
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 12px 14px;
  margin: 10px 0;
}

.summary-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.summary-title {
  font-weight: 650;
  color: var(--text);
  font-size: 14px;
}

.summary-sub {
  color: var(--text-secondary);
  font-size: 12px;
  white-space: nowrap;
}

.summary-gradient {
  margin-top: 10px;
  height: 12px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(120,120,120,0.18);
}

.summary-strip {
  margin-top: 10px;
  height: 12px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.08);
  overflow: hidden;
  display: flex;
  background: rgba(120,120,120,0.18);
}

.summary-strip-seg {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 2px;
}

.summary-strip-pct {
  font-size: 10px;
  line-height: 1;
  font-weight: 700;
  color: rgba(255,255,255,0.92);
  text-shadow: 0 1px 1px rgba(0,0,0,0.55);
  padding: 0 2px;
  user-select: none;
}

.summary-seg-legend {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.seg-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
}

.seg-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  border: 1px solid rgba(0,0,0,0.25);
}

.seg-text {
  font-size: 11px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* Crypto detail overlay (panel style; don't override existing .overlay bottom-sheet) */
#cryptoDetailOverlay {
  background: rgba(0,0,0,0.55);
  z-index: 160;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

#cryptoDetailOverlay .overlay-panel {
  width: min(860px, 96vw);
  max-height: 88vh;
  background: #121212;
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

#cryptoDetailOverlay .overlay-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 12px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

#cryptoDetailOverlay .overlay-title {
  font-weight: 700;
}

#cryptoDetailOverlay .overlay-body {
  padding: 12px;
  overflow: auto;
}

.expand-icon {
  color: var(--text-secondary);
  transition: transform 0.3s;
}

.card.expanded .expand-icon {
  transform: rotate(180deg);
}

/* Body of the card (Hidden by default) */
.card-body {
  height: 0;
  overflow: hidden; /* Important for accordion effect */
  opacity: 0;
  transition: height 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
  background-color: rgba(0,0,0,0.2);
}

.card.expanded .card-body {
  height: auto; /* Fallback */
  opacity: 1;
  padding: 16px;
  border-top: 1px solid var(--border-color);
}

.message-content {
  font-size: 14px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.message-json {
  margin-top: 12px;
  background: #111;
  padding: 8px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  overflow-x: auto;
  color: var(--accent-secondary);
}

/* Auth Screen */
.auth-screen {
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: var(--bg-color);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}
.auth-screen.hidden { display: none; }

.auth-card {
  width: 90%;
  max-width: 360px;
  padding: 32px 24px;
  background: var(--surface-color);
  border-radius: 16px;
  border: 1px solid var(--border-color);
  text-align: center;
}

.auth-card h2 { margin: 0 0 8px; color: var(--accent-color); }
.subtitle { color: var(--text-secondary); margin: 0 0 24px; font-size: 14px; }

.input-group { margin-bottom: 16px; }
.input-group input {
  width: 100%;
  padding: 12px;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 16px;
  outline: none;
}
.input-group input:focus { border-color: var(--accent-color); }

/* Key Info (RSI/ATR) from parsing */
.key-info-row {
  display: flex;
  gap: 12px;
  margin-top: 4px;
  flex-wrap: wrap;
}

.key-tag {
  font-size: 11px;
  font-family: var(--font-mono);
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  color: #ccc;
  display: flex;
  align-items: center;
}

.key-tag span.value {
  color: var(--accent-color);
  margin-left: 4px;
  font-weight: 600;
}

/* Card variants based on sentiment */
.card.bullish { border-left: 4px solid var(--signal-buy); }
.card.bearish { border-left: 4px solid var(--signal-sell); }
.card.neutral { border-left: 4px solid #777; }

/* Filter Bar */
.filter-bar {
  display: flex;
  padding: 0 16px 12px;
  gap: 8px;
  overflow-x: auto;
}

.filter-chip {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: 16px;
  font-size: 13px;
  white-space: nowrap;
  cursor: pointer;
}
.filter-chip.active {
  background: var(--accent-color);
  color: black;
  border-color: var(--accent-color);
}

.btn {
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-weight: 600;
  cursor: pointer;
  transition: filter 0.2s;
}
.btn.primary { background: var(--accent-color); color: #000; }
.btn.secondary { background: var(--surface-hover); color: var(--text-primary); }
.btn.large { width: 100%; padding: 12px; font-size: 16px; }
.btn:hover { filter: brightness(1.1); }
.full-width { width: 100%; margin-bottom: 8px; }

/* Settings Modal */
.overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.8); z-index: 150;
  display: flex; align-items: flex-end; /* Bottom sheet on mobile */
}
.overlay.hidden { display: none; }

.modal {
  width: 100%;
  background: var(--surface-color);
  border-radius: 16px 16px 0 0;
  padding: 24px;
  max-width: 600px;
  margin: 0 auto;
}
@media (min-width: 600px) {
  .overlay { align-items: center; }
  .modal { border-radius: 16px; }
}

.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.close-btn { background: none; border: none; font-size: 24px; color: var(--text-secondary); cursor: pointer; }

.toggle-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
}
.toggle-row input { display: none; }
.toggle-switch {
  width: 40px; height: 24px;
  background: var(--333);
  background-color: #444;
  border-radius: 20px;
  position: relative;
  transition: background 0.2s;
}
.toggle-switch::after {
  content: ''; position: absolute; top: 2px; left: 2px;
  width: 20px; height: 20px; background: #fff; border-radius: 50%;
  transition: transform 0.2s;
}
.toggle-row input:checked + .toggle-switch { background-color: var(--accent-color); }
.toggle-row input:checked + .toggle-switch::after { transform: translateX(16px); }

/* Load More */
.load-more-btn {
  width: calc(100% - 32px);
  margin: 16px;
  padding: 12px;
  background: var(--surface-color);
  color: var(--text-secondary);
  border: 1px dashed var(--border-color);
  border-radius: 12px;
  cursor: pointer;
}
.load-more-btn:hover { background: var(--surface-hover); color: var(--text-primary); }

.loading-state { display: flex; justify-content: center; padding: 20px; }
.spinner {
  width: 24px; height: 24px;
  border: 2px solid var(--text-secondary);
  border-top-color: var(--accent-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.loading-state.hidden { display: none !important; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Filter Controls */
.filter-controls {
  padding: 0 16px 12px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.filter-group {
  display: flex;
  gap: 8px;
  align-items: center;
}
.filter-group.hidden { display: none; }

.filter-select, .filter-input {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 13px;
  outline: none;
}

.filter-select:focus, .filter-input:focus {
  border-color: var(--accent-color);
}

.btn.small {
  padding: 6px 12px;
  font-size: 12px;
}

/* Stats Panel & Compact Layout */
.stats-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 12px 16px;
  max-width: 800px;
  margin: 0 auto;
}

.stats-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  width: 100%;
}
.stats-group.hidden { display: none; }

.stat-card {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px;
  flex: 1;
  min-width: 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.stat-card.wide {
  flex-basis: 100%;
}

.stat-card h4 {
  margin: 0 0 8px 0;
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
}
.stat-card .value {
  font-size: 18px;
  font-weight: 700;
  font-family: var(--font-mono);
}

.row-group {
  display: flex;
  flex-direction: row;
  gap: 8px;
  align-items: center;
}

/* Compact Adjustments */
.nav-tabs {
  overflow-x: auto; /* Scrolable tabs */
  max-width: 60vw;
  scrollbar-width: none;
}
.nav-tabs::-webkit-scrollbar { display: none; }
.nav-item { white-space: nowrap; flex-shrink: 0; }

.filter-controls .filter-group {
  flex-wrap: wrap;
}

/* Card Compactness */
.card {
  padding: 10px 14px !important; /* Override default */
}
.card-header {
  margin-bottom: 4px !important;
}
.card-time {
  font-size: 11px !important;
}
.message-content {
  font-size: 13px !important;
  line-height: 1.4 !important;
}
.text-success { color: #00C853; }
.text-danger { color: #FF3D00; }

/* Channel Picker */
.channel-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 55vh;
  overflow: auto;
  padding-right: 4px;
}

.channel-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: rgba(255,255,255,0.02);
}

.channel-name {
  font-size: 14px;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.channel-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.pill {
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: var(--surface-color);
  color: var(--text-secondary);
}

.pill.active {
  border-color: var(--accent-secondary);
  color: var(--accent-secondary);
}