:root {
  --bg-dark: #0b0e14;
  --card-bg: #151921;
  --card-border: #232936;
  --accent-blue: #3b82f6;
  --accent-btc: #f7931a;
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --green-gain: #10b981;
  --green-glow: rgba(16, 185, 129, 0.15);
  --red-loss: #ef4444;
  --red-glow: rgba(239, 68, 68, 0.15);
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-sans);
  min-height: 100vh;
  padding: 1.5rem;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.app-container {
  width: 100%;
  max-width: 1200px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.25rem 1.75rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.crypto-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f7931a, #d97706);
  color: #fff;
  font-size: 1.5rem;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(247, 147, 26, 0.3);
}

h1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.custom-select {
  background: var(--bg-dark);
  color: var(--text-main);
  border: 1px solid var(--card-border);
  padding: 0.5rem 0.85rem;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  outline: none;
  cursor: pointer;
  transition: border-color 0.2s;
}

.custom-select:focus {
  border-color: var(--accent-blue);
}

/* Status Bar */
.status-bar {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--red-loss);
  color: var(--red-loss);
  padding: 0.75rem 1.25rem;
  border-radius: 10px;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.status-bar.hidden {
  display: none;
}

/* Alert Bar */
.alert-bar {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.alert-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  font-size: 0.9rem;
}

.alert-inputs {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.alert-input {
  background: var(--bg-dark);
  border: 1px solid var(--card-border);
  color: var(--text-main);
  padding: 0.45rem 0.75rem;
  border-radius: 8px;
  font-size: 0.85rem;
  outline: none;
}

.btn {
  background: var(--accent-blue);
  color: white;
  border: none;
  padding: 0.45rem 1rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn:hover {
  opacity: 0.9;
}

.alert-controls {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--text-main);
  cursor: pointer;
  user-select: none;
}

.toggle-label input[type="checkbox"] {
  accent-color: var(--accent-blue);
  width: 15px;
  height: 15px;
  cursor: pointer;
}

.custom-select-sm {
  background: var(--bg-dark);
  color: var(--text-main);
  border: 1px solid var(--card-border);
  padding: 0.2rem 0.4rem;
  border-radius: 6px;
  font-size: 0.8rem;
  outline: none;
}

.btn-sm {
  padding: 0.3rem 0.75rem;
  font-size: 0.8rem;
}

.btn-primary {
  background: var(--accent-blue);
  color: white;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid var(--card-border);
}

.alert-status {
  font-size: 0.85rem;
  color: #38bdf8;
  width: 100%;
  text-align: right;
}

/* AI Assistant Bar & Toggle */
.assistant-bar {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.12), rgba(16, 185, 129, 0.08));
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 14px;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.assistant-title-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.bot-icon {
  font-size: 1.8rem;
  background: rgba(59, 130, 246, 0.2);
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.assistant-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.assistant-toggle-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.toggle-status-text {
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.toggle-status-text.active {
  color: var(--green-gain);
}

/* Switch Toggle Styling */
.switch {
  position: relative;
  display: inline-block;
  width: 52px;
  height: 28px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--card-border);
  transition: .3s;
  border-radius: 34px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--green-gain);
}

input:checked + .slider:before {
  transform: translateX(24px);
}

/* Assistant Signals Card */
.assistant-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.signal-badge {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  text-transform: uppercase;
}

.signal-badge.buy {
  background: rgba(16, 185, 129, 0.2);
  color: var(--green-gain);
  border: 1px solid var(--green-gain);
}

.signal-badge.sell {
  background: rgba(239, 68, 68, 0.2);
  color: var(--red-loss);
  border: 1px solid var(--red-loss);
}

.signal-badge.neutral {
  background: rgba(156, 163, 175, 0.2);
  color: var(--text-muted);
}

.signal-main-box {
  background: var(--bg-dark);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.25rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.signal-action {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.signal-action.buy {
  color: var(--green-gain);
  text-shadow: 0 0 12px rgba(16, 185, 129, 0.3);
}

.signal-action.sell {
  color: var(--red-loss);
  text-shadow: 0 0 12px rgba(239, 68, 68, 0.3);
}

.signal-action.hold {
  color: #3b82f6;
}

.signal-reason {
  font-size: 0.85rem;
  color: var(--text-main);
  line-height: 1.4;
}

.indicators-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.indicator-box {
  background: var(--bg-dark);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  text-align: center;
}

.ind-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.ind-value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
}

.ind-status {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.full-width-chart {
  grid-column: 1 / -1;
}

/* Dashboard Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

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

.coin-info {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.coin-symbol-badge {
  background: rgba(247, 147, 26, 0.15);
  color: var(--accent-btc);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
}

.coin-fullname {
  font-weight: 600;
  font-size: 1.1rem;
}

.live-badge {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--green-gain);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--green-glow);
  padding: 0.3rem 0.6rem;
  border-radius: 20px;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  background-color: var(--green-gain);
  border-radius: 50%;
  display: inline-block;
  animation: pulse 1.5s 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 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.price-display-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.current-price {
  font-family: var(--font-mono);
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.price-change-badge {
  align-self: flex-start;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 8px;
  display: inline-block;
}

.price-change-badge.positive {
  background: var(--green-glow);
  color: var(--green-gain);
}

.price-change-badge.negative {
  background: var(--red-glow);
  color: var(--red-loss);
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  border-top: 1px solid var(--card-border);
  padding-top: 1.25rem;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--card-border);
  padding-top: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.btn-icon {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  padding: 0.2rem;
  transition: transform 0.3s ease;
}

.btn-icon:hover {
  transform: rotate(180deg);
}

/* Chart Section */
.chart-card {
  min-height: 400px;
}

.chart-container {
  position: relative;
  width: 100%;
  flex: 1;
  min-height: 320px;
}

.chart-indicators {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.indicator-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-blue);
  border-radius: 50%;
}

.chart-loader {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(21, 25, 33, 0.85);
  backdrop-filter: blur(4px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  border-radius: 12px;
  transition: opacity 0.3s;
}

.chart-loader.hidden {
  opacity: 0;
  pointer-events: none;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin 1s infinite linear;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Footer */
.app-footer {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 1rem 0;
}