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

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #1a1025;
  --bg-card: rgba(26, 16, 37, 0.8);
  --accent-cyan: #00d4ff;
  --accent-lime: #39ff14;
  --accent-gold: #ffd700;
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --border-color: rgba(255, 255, 255, 0.1);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

.app {
  min-height: 100vh;
  position: relative;
}

/* Particle Background */
.particle-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  background: var(--accent-cyan);
  border-radius: 50%;
}

@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0); }
  25% { transform: translateY(-20px) translateX(10px); }
  50% { transform: translateY(-10px) translateX(-10px); }
  75% { transform: translateY(-30px) translateX(5px); }
}

/* Header */
.header {
  background: linear-gradient(135deg, #1a1025 0%, #0d0d1a 50%, #1a0a20 100%);
  padding: 2rem 1rem;
  text-align: center;
  position: relative;
  border-bottom: 1px solid var(--border-color);
}

.header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    linear-gradient(90deg, transparent 49%, rgba(0, 212, 255, 0.03) 50%, transparent 51%),
    linear-gradient(0deg, transparent 49%, rgba(0, 212, 255, 0.03) 50%, transparent 51%);
  background-size: 50px 50px;
  pointer-events: none;
}

.header-content {
  position: relative;
  z-index: 1;
}

.app-title {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.app-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.app-date {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  font-family: 'JetBrains Mono', monospace;
}

/* Main Content */
.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 1rem 6rem;
  position: relative;
  z-index: 1;
}

/* Section Styles */
.section-title {
  font-size: 1rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  text-align: center;
}

/* Risk Selector */
.risk-selector {
  margin-bottom: 2rem;
}

.risk-buttons {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.risk-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  padding: 0.75rem 1.5rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  backdrop-filter: blur(10px);
}

.risk-btn:hover {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.risk-btn.active {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(57, 255, 20, 0.1));
  border-color: var(--accent-cyan);
  color: var(--text-primary);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
}

.risk-btn-name {
  font-weight: 600;
  font-size: 0.9rem;
}

.risk-btn-ratio {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  opacity: 0.7;
}

/* Visualization */
.visualization {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 2rem;
}

.donut-container {
  position: relative;
  width: 280px;
  height: 280px;
  margin-bottom: 1.5rem;
}

.donut-chart {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.donut-slice {
  transition: all 0.3s ease;
  cursor: pointer;
  transform-origin: center;
}

.donut-slice.hovered {
  transform: scale(1.05);
}

.donut-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.donut-amount {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.donut-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.donut-hover-info {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--accent-lime);
  margin-top: 0.5rem;
}

/* Investment Input */
.investment-input {
  text-align: center;
}

.investment-input label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.input-wrapper {
  display: inline-flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 0.5rem 1rem;
  backdrop-filter: blur(10px);
}

.currency-symbol {
  color: var(--accent-lime);
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.25rem;
  margin-right: 0.5rem;
}

.investment-field {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.25rem;
  width: 120px;
  outline: none;
}

.investment-field::-webkit-outer-spin-button,
.investment-field::-webkit-inner-spin-button {
  -webkit-appearance: none;
}

/* Allocations */
.allocations {
  margin-bottom: 2rem;
}

.allocation-section {
  margin-bottom: 2rem;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.section-icon {
  font-size: 1.25rem;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

/* Coin Card */
.coin-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.25rem;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  position: relative;
}

.coin-card:hover {
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  transform: translateY(-2px);
}

.coin-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.coin-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  color: white;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.coin-info {
  flex: 1;
}

.coin-name {
  font-weight: 600;
  font-size: 1rem;
}

.coin-ticker {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.coin-actions {
  display: flex;
  gap: 0.5rem;
}

.lock-btn, .info-btn {
  background: transparent;
  border: none;
  font-size: 1rem;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.2s;
  padding: 0.25rem;
}

.lock-btn:hover, .info-btn:hover {
  opacity: 1;
}

.lock-btn.locked {
  opacity: 1;
}

/* Tags */
.coin-tags {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.risk-tag, .category-tag {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: 20px;
  font-weight: 500;
}

.risk-tag {
  background: transparent;
  border: 1px solid;
}

.category-tag {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
}

/* Allocation */
.coin-allocation {
  margin-bottom: 0.75rem;
}

.allocation-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.allocation-percent {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.allocation-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  color: var(--accent-lime);
}

.allocation-slider {
  width: 100%;
  height: 8px;
  -webkit-appearance: none;
  appearance: none;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  outline: none;
  cursor: pointer;
}

.allocation-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--slider-color, var(--accent-cyan));
  cursor: pointer;
  box-shadow: 0 0 10px var(--slider-color, var(--accent-cyan));
  transition: transform 0.2s;
}

.allocation-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.allocation-slider:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.coin-explanation {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-style: italic;
  margin-bottom: 0.5rem;
}

.why-now {
  background: rgba(57, 255, 20, 0.1);
  border-left: 2px solid var(--accent-lime);
  padding: 0.5rem 0.75rem;
  border-radius: 0 8px 8px 0;
  font-size: 0.8rem;
}

.why-now-label {
  color: var(--accent-lime);
  font-weight: 600;
  margin-right: 0.5rem;
}

.why-now-text {
  color: var(--text-secondary);
}

/* Tooltip */
.tooltip-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.tooltip-content {
  background: var(--bg-secondary);
  border: 1px solid var(--accent-cyan);
  border-radius: 16px;
  padding: 1.5rem;
  max-width: 400px;
  position: relative;
}

.tooltip-close {
  position: absolute;
  top: 0.5rem;
  right: 0.75rem;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
}

.tooltip-content h4 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  color: var(--accent-cyan);
}

.tooltip-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.tooltip-risks {
  font-size: 0.85rem;
  color: var(--accent-gold);
  margin-bottom: 1rem;
}

.tooltip-disclaimer {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
  text-align: center;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
}

/* Summary Panel */
.summary-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.25rem;
  backdrop-filter: blur(10px);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1rem;
  align-items: center;
}

.summary-item {
  text-align: center;
}

.summary-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.summary-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.25rem;
  font-weight: 700;
}

.summary-value.warning {
  color: #ff6b35;
}

.summary-value.blue {
  color: var(--accent-cyan);
}

.summary-value.alt {
  color: var(--accent-lime);
}

.summary-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  grid-column: 1 / -1;
}

.btn-copy, .btn-reset {
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
}

.btn-copy {
  background: linear-gradient(135deg, var(--accent-cyan), #0099cc);
  color: white;
}

.btn-copy:hover {
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
  transform: translateY(-2px);
}

.btn-reset {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.btn-reset:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-lime);
  color: #000;
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  font-weight: 600;
  z-index: 1001;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 1.5rem 1rem;
  text-align: center;
  position: relative;
  z-index: 1;
}

.disclaimer {
  color: var(--accent-gold);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.credit {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.credit a {
  color: var(--accent-cyan);
  text-decoration: none;
}

.credit a:hover {
  text-decoration: underline;
}

.timestamp {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.4);
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .app-title {
    font-size: 1.5rem;
  }

  .donut-container {
    width: 220px;
    height: 220px;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .summary-panel {
    grid-template-columns: repeat(2, 1fr);
  }

  .summary-actions {
    flex-direction: column;
  }

  .btn-copy, .btn-reset {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .header {
    padding: 1.5rem 1rem;
  }

  .risk-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .risk-btn {
    flex-direction: row;
    justify-content: space-between;
  }
}