/* ========================================
   Ising Model Visualization Styles
   Scoped with .ising- prefix to prevent
   pollution of other components
   ======================================== */

/* CSS Variables for theming */
.ising-container {
  --im-primary: #1a1a2e;
  --im-secondary: #16213e;
  --im-accent: #0f3460;
  --im-highlight: #e94560;
  --im-spin-up: #e94560;
  --im-spin-down: #4a90d9;
  --im-text: #eaeaea;
  --im-text-muted: #a0a0a0;
  --im-bg: #0d1117;
  --im-panel: #161b22;
  --im-border: #30363d;
  --im-shadow: rgba(0, 0, 0, 0.3);
  --im-shadow-lg: rgba(0, 0, 0, 0.5);
  --im-radius: 8px;
  --im-radius-lg: 12px;
  --im-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Container */
.ising-container {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  line-height: 1.6;
  color: var(--im-text);
  max-width: 1600px;
  margin: 0 auto;
  padding: 20px;
  background: var(--im-bg);
  border-radius: var(--im-radius-lg);
}

/* Header */
.ising-container header {
  text-align: center;
  margin-bottom: 30px;
  padding: 30px 20px;
  background: linear-gradient(135deg, var(--im-accent) 0%, var(--im-secondary) 100%);
  border-radius: var(--im-radius-lg);
  box-shadow: 0 4px 6px var(--im-shadow);
}

.ising-container header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin: 0 0 15px 0;
  color: white;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.ising-container .subtitle {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  margin: 10px 0;
  font-weight: 400;
}

.ising-container .author {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.7);
  margin: 5px 0 0 0;
  font-style: italic;
}

/* Main Visualization Section */
.viz-main {
  margin-bottom: 30px;
}

.viz-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 20px;
  margin-bottom: 20px;
  align-items: start;
}

@media (max-width: 1200px) {
  .viz-layout {
    grid-template-columns: 1fr;
  }
}

/* Canvas Section */
.canvas-section {
  background: var(--im-panel);
  border-radius: var(--im-radius-lg);
  padding: 20px;
  box-shadow: 0 4px 6px var(--im-shadow);
}

.canvas-wrapper {
  position: relative;
  width: 100%;
  min-height: 420px;
  aspect-ratio: 1 / 1;
  max-height: min(70vh, 720px);
  background: #000;
  border-radius: var(--im-radius);
  overflow: hidden;
}

#isingCanvas {
  width: 100%;
  height: 100%;
  display: block;
  image-rendering: pixelated;
}

/* Canvas Overlay Stats */
.canvas-overlay {
  position: absolute;
  top: 10px;
  left: calc(10px + var(--ising-lattice-offset-x, 0px));
  width: min(calc(100% - 20px), var(--ising-lattice-size, calc(100% - 20px)));
  pointer-events: none;
}

.stats-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  background: rgba(13, 17, 23, 0.9);
  backdrop-filter: blur(10px);
  padding: 15px;
  border-radius: var(--im-radius);
  border: 1px solid var(--im-border);
}

.stat-item {
  display: flex;
  flex-direction: column;
  min-width: 100px;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--im-text-muted);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--im-highlight);
  font-family: 'Courier New', monospace;
}

/* Control Panel */
.control-panel {
  background: var(--im-panel);
  border-radius: var(--im-radius-lg);
  padding: 20px;
  box-shadow: 0 4px 6px var(--im-shadow);
  max-height: 600px;
  overflow-y: auto;
}

.control-panel h3 {
  margin: 0 0 20px 0;
  font-size: 1.3rem;
  color: var(--im-text);
  border-bottom: 2px solid var(--im-accent);
  padding-bottom: 10px;
}

.control-group {
  margin-bottom: 20px;
}

.control-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--im-text);
}

.slider-container {
  margin-bottom: 8px;
}

.slider-container input[type="range"] {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--im-border);
  outline: none;
  -webkit-appearance: none;
}

.slider-container input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--im-highlight);
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.slider-container input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--im-highlight);
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--im-text-muted);
  margin-top: 5px;
}

.slider-labels span:nth-child(2) {
  font-weight: 700;
  color: var(--im-highlight);
  font-size: 0.9rem;
}

.critical-marker {
  text-align: center;
  font-size: 0.75rem;
  color: var(--im-highlight);
  margin-top: 5px;
  padding: 5px;
  background: rgba(233, 69, 96, 0.1);
  border-radius: var(--im-radius);
}

/* Buttons */
.button-group {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.btn {
  flex: 1;
  padding: 12px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  border-radius: var(--im-radius);
  cursor: pointer;
  transition: var(--im-transition);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-primary {
  background: var(--im-highlight);
  color: white;
}

.btn-primary:hover {
  background: #d63850;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(233, 69, 96, 0.3);
}

.btn-secondary {
  background: var(--im-accent);
  color: white;
}

.btn-secondary:hover {
  background: var(--im-secondary);
  transform: translateY(-2px);
}

.btn-warning {
  background: #f39c12;
  color: white;
}

.btn-warning:hover {
  background: #e67e22;
  transform: translateY(-2px);
}

/* State Selector */
.state-selector {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.state-btn {
  padding: 10px;
  font-size: 0.85rem;
  background: var(--im-accent);
  color: var(--im-text);
  border: 2px solid transparent;
  border-radius: var(--im-radius);
  cursor: pointer;
  transition: var(--im-transition);
  font-weight: 600;
}

.state-btn:hover {
  background: var(--im-secondary);
  border-color: var(--im-highlight);
}

.state-btn.active {
  background: var(--im-highlight);
  border-color: var(--im-highlight);
  color: white;
}

/* Checkbox Group */
.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--im-text);
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--im-highlight);
}

/* Charts Section */
.charts-section {
  margin-bottom: 30px;
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 20px;
}

@media (max-width: 768px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }
}

.chart-container {
  background: var(--im-panel);
  border-radius: var(--im-radius-lg);
  padding: 20px;
  box-shadow: 0 4px 6px var(--im-shadow);
}

.chart-container h4 {
  margin: 0 0 15px 0;
  font-size: 1.1rem;
  color: var(--im-text);
}

.chart-container canvas {
  width: 100%;
  height: 200px;
  display: block;
  background: var(--im-bg);
  border-radius: var(--im-radius);
}

/* Educational Section */
.educational-section {
  margin-bottom: 30px;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  align-items: start;
}

@media (max-width: 768px) {
  .content-grid {
    grid-template-columns: 1fr;
  }
}

.content-card {
  background: var(--im-panel);
  border-radius: var(--im-radius-lg);
  padding: 25px;
  box-shadow: 0 4px 6px var(--im-shadow);
  border: 1px solid var(--im-border);
}

.content-card h3 {
  margin: 0 0 20px 0;
  font-size: 1.3rem;
  color: var(--im-highlight);
  border-bottom: 2px solid var(--im-accent);
  padding-bottom: 10px;
}

.content-card h4 {
  margin: 20px 0 10px 0;
  font-size: 1.1rem;
  color: var(--im-text);
}

.content-card h5 {
  margin: 15px 0 8px 0;
  font-size: 1rem;
  color: var(--im-highlight);
}

.content-card p {
  margin: 10px 0;
  color: var(--im-text);
  line-height: 1.7;
}

.content-card ul,
.content-card ol {
  margin: 10px 0;
  padding-left: 25px;
  color: var(--im-text);
}

.content-card li {
  margin: 8px 0;
  line-height: 1.6;
}

.content-card strong {
  color: var(--im-highlight);
  font-weight: 600;
}

/* Formula Box */
.formula-box {
  background: rgba(233, 69, 96, 0.05);
  border: 1px solid rgba(233, 69, 96, 0.2);
  border-radius: var(--im-radius);
  padding: 20px;
  margin: 20px 0;
}

.formula-display {
  background: var(--im-bg);
  padding: 15px;
  border-radius: var(--im-radius);
  font-family: 'Courier New', monospace;
  font-size: 1.1rem;
  text-align: center;
  margin: 15px 0;
  color: var(--im-highlight);
  font-weight: 700;
  border: 1px solid var(--im-border);
}

/* Milestones */
.milestones {
  margin-top: 20px;
}

.milestones ul {
  list-style: none;
  padding-left: 0;
}

.milestones li {
  padding: 10px;
  margin: 10px 0;
  background: rgba(15, 52, 96, 0.3);
  border-radius: var(--im-radius);
  border-left: 3px solid var(--im-highlight);
}

/* Phase Items */
.phase-item {
  background: rgba(15, 52, 96, 0.3);
  padding: 15px;
  margin: 15px 0;
  border-radius: var(--im-radius);
  border-left: 3px solid var(--im-highlight);
}

/* Algorithm Steps */
.algorithm-steps ol {
  background: rgba(15, 52, 96, 0.3);
  padding: 20px;
  border-radius: var(--im-radius);
}

.algorithm-steps li {
  margin: 12px 0;
  padding-left: 10px;
}

/* Note */
.note {
  background: rgba(243, 156, 18, 0.1);
  border: 1px solid rgba(243, 156, 18, 0.3);
  border-radius: var(--im-radius);
  padding: 15px;
  margin: 15px 0;
  font-size: 0.9rem;
}

.note strong {
  color: #f39c12;
}

/* Observation Guide */
.observation-guide {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 15px;
}

.observation-item {
  background: rgba(15, 52, 96, 0.3);
  padding: 15px;
  border-radius: var(--im-radius);
  border-left: 3px solid var(--im-highlight);
  transition: var(--im-transition);
  min-width: 0;
}

.observation-item:hover {
  background: rgba(15, 52, 96, 0.5);
  transform: translateX(5px);
}

/* Formula Section */
.formula-section {
  background: var(--im-panel);
  border-radius: var(--im-radius-lg);
  padding: 25px;
  margin-bottom: 30px;
  box-shadow: 0 4px 6px var(--im-shadow);
}

.formula-section h3 {
  margin: 0 0 20px 0;
  font-size: 1.5rem;
  color: var(--im-highlight);
  text-align: center;
}

.formula-breakdown {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.formula-term {
  display: flex;
  gap: 15px;
  background: rgba(15, 52, 96, 0.3);
  padding: 20px;
  border-radius: var(--im-radius);
  border: 1px solid var(--im-border);
}

.term-symbol {
  flex-shrink: 0;
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--im-bg);
  border-radius: var(--im-radius);
  font-family: 'Courier New', monospace;
  font-size: 1.2rem;
  color: var(--im-highlight);
  font-weight: 700;
  border: 2px solid var(--im-accent);
}

.term-desc h4 {
  margin: 0 0 10px 0;
  font-size: 1.1rem;
  color: var(--im-text);
}

.term-desc p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--im-text-muted);
  line-height: 1.6;
}

/* Footer */
.footer-section {
  text-align: center;
  padding: 30px 20px;
  background: linear-gradient(135deg, var(--im-accent) 0%, var(--im-secondary) 100%);
  border-radius: var(--im-radius-lg);
  margin-top: 30px;
}

.footer-section p {
  margin: 10px 0;
  color: rgba(255, 255, 255, 0.9);
}

.footer-note {
  font-style: italic;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
}

/* Scrollbar Styling */
.control-panel::-webkit-scrollbar {
  width: 8px;
}

.control-panel::-webkit-scrollbar-track {
  background: var(--im-bg);
  border-radius: var(--im-radius);
}

.control-panel::-webkit-scrollbar-thumb {
  background: var(--im-accent);
  border-radius: var(--im-radius);
}

.control-panel::-webkit-scrollbar-thumb:hover {
  background: var(--im-highlight);
}

/* Responsive Design */
@media (max-width: 768px) {
  .ising-container {
    padding: 15px;
  }

  .ising-container header h1 {
    font-size: 1.8rem;
  }

  .canvas-wrapper {
    min-height: 300px;
    max-height: 60vh;
  }

  .canvas-overlay {
    top: 8px;
    left: calc(8px + var(--ising-lattice-offset-x, 0px));
    width: min(calc(100% - 16px), var(--ising-lattice-size, calc(100% - 16px)));
  }

  .stats-panel {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px 10px;
    padding: 10px 12px;
    background: rgba(13, 17, 23, 0.72);
  }

  .stat-item {
    min-width: 0;
  }

  .stat-label {
    font-size: 0.68rem;
    margin-bottom: 2px;
    letter-spacing: 0.3px;
  }

  .stat-value {
    font-size: 0.95rem;
  }

  .button-group {
    flex-direction: column;
  }

  .formula-breakdown {
    grid-template-columns: 1fr;
  }

  .formula-term {
    flex-direction: column;
  }

  .term-symbol {
    width: 100%;
    height: 60px;
  }

  .observation-guide {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .stats-panel {
    grid-template-columns: 1fr 1fr;
    gap: 6px 8px;
    padding: 8px 10px;
  }

  .stat-label {
    font-size: 0.62rem;
  }

  .stat-value {
    font-size: 0.88rem;
  }
}