:root {
  --background-color: #f8f9fa;
  --primary-text-color: #212529;
  --secondary-text-color: #6c757d;
  --accent-color: #007bff;
  --elevation-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  --border-radius: 0.25rem;
  --font-stack: Menlo, Consolas, monospace;
}

*,
*:before,
*:after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--background-color);
  color: var(--primary-text-color);
  font-family: var(--font-stack);
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: background 0.3s ease, color 0.3s ease;
}

.nav-footer-common,
.nav-wrapper,
footer.page-footer {
  background-color: var(--accent-color);
  color: white;
  box-shadow: var(--elevation-shadow);
  padding: 1rem 2rem;
  margin: 0 auto;
  width: 100%;
  text-align: center;
}

.nav-footer-common a,
footer.page-footer a {
  color: white;
  text-decoration: none;
  padding: 0.5rem;
}

nav,
footer.page-footer {
  width: 100%;
  text-align: center;
}

.nav-wrapper,
.page-footer .container {
  padding: 0 1rem;
}

.container {
  width: 90%;
  max-width: 1140px;
  margin: auto;
  padding: 1rem;
  flex-grow: 1;
}

.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -0.75rem;
}

.col {
  padding: 0 0.75rem;
  flex: 1;
}

.card-panel {
  margin: 1rem 0;
  padding: 1rem;
  border-radius: var(--border-radius);
  background-color: white;
  box-shadow: var(--elevation-shadow);
  transition: all 0.2s ease-in-out;
}

.card-panel:hover {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

blockquote {
  border-left: 0.3em solid var(--accent-color);
  margin: 0 0 1rem;
  padding-left: 0.8rem;
}

.canvas {
  background: white;
  border: 1px solid #dee2e6;
  border-radius: var(--border-radius);
  height: 280px;
  width: 280px;
  max-width: 100%;
  aspect-ratio: 1 / 1;
}

.predictions {
  display: flex;
  justify-content: space-around;
  align-items: flex-end;
}

.prediction-col {
  padding: 0.5rem;
  text-align: center;
  cursor: default;
}

.prediction-bar-container {
  background: #e9ecef;
  border-radius: var(--border-radius);
  height: 225px;
  width: 100%;
  position: relative;
}

.prediction-bar {
  background: var(--secondary-text-color);
  border-radius: var(--border-radius) var(--border-radius) 0 0;
  bottom: 0;
  position: absolute;
  width: 100%;
  transition: height 0.4s ease, background-color 0.2s ease;
}

.prediction-number {
  color: var(--secondary-text-color);
  font-size: 1rem;
}

.top-prediction .prediction-bar {
  background: var(--accent-color);
}

.top-prediction .prediction-number {
  color: var(--accent-color);
  font-weight: bold;
}

.button-pad {
  text-align: center;
}

button,
.btn {
  cursor: pointer;
  font-family: inherit;
  padding: 0.5rem 1rem;
  font-size: 1rem;
  border-radius: var(--border-radius);
  border: 1px solid transparent;
  background-color: var(--accent-color);
  color: white;
  transition: background-color 0.15s ease-in-out, color 0.15s ease-in-out;
}

button:hover,
.btn:hover {
  background-color: #0056b3;
  color: white;
}

button:focus,
.btn:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

footer.page-footer {
  background-color: var(--accent-color);
  color: white;
  box-shadow: var(--elevation-shadow);
  padding: 1rem 0;
  width: 100%;
}

@media screen and (max-width: 600px) {

  .nav-wrapper,
  footer.page-footer {
    padding: 0.5rem 1rem;
  }

  .container {
    padding: 5px;
  }

  .row {
    margin: 0;
  }

  .col {
    padding: 0;
    margin-bottom: 1rem;
  }

  .canvas,
  .predictions,
  .prediction-col {
    width: 100%;
    height: auto;
  }

  footer.page-footer {
    position: relative;
    margin-top: 1rem;
  }
}