body {
  margin: 0;
  padding: 0;
  font-family: "Roboto", sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
}

.btn-outline-black {
  color: black;
  border: 1px solid black;
  background-color: white;
}

.btn-outline-black:hover,
.btn-outline-black.active {
  background-color: black;
  color: white;
}
  
.btn-chart {
  background-color: rgba(75, 192, 192, 1);
  color: white;
  border: none;
}

.btn-chart:hover {
  background-color: rgba(60, 160, 160, 1);
  color: white;
}

.toast-message {
  color: black !important;
}

/* Match Chart.js teal: rgb(75, 192, 192) */
.form-check-input:checked {
  background-color: rgb(75, 192, 192);
  border-color: rgb(75, 192, 192);
  box-shadow: 0 0 0 0.25rem rgba(75, 192, 192, 0.25);
}

.form-check-input {
  background-color: #dee2e6;
  border-color: #ced4da;
}

#rangeButtons .btn {
  border-radius: 30px;
  padding: 6px 18px;         
  font-size: 0.9rem;         
  font-weight: 600;
  background-color: #ffffff;
  color: #000;
  border: 2px solid #000;
  margin-right: 10px;        
  transition: background-color 0.2s, color 0.2s;
}

#rangeButtons .btn:last-child {
  margin-right: 0;           
}

#rangeButtons .btn:hover {
  background-color: #f0f0f0;
}

#rangeButtons .btn.active {
  background-color: #66c6c6;
  color: white;
  border-color: #66c6c6;
}

/* ----------------- THEME VARIABLES ----------------- */
:root {
  --bg-color: #fafafa;
  --text-color: #212529;
  --card-bg: #ffffff;
  --border-color: #dee2e6;
  --btn-bg: #ffffff;
  --btn-border: #000;
  --btn-active: #66c6c6;

  --about-bg: #ffffff;
  --about-border: #000;
}

body.dark-mode {
  --bg-color: #121212;
  --text-color: #f1f1f1;
  --card-bg: #1e1e1e;
  --border-color: #333;
  --btn-bg: #1e1e1e;
  --btn-border: #f1f1f1;
  --btn-active: #4fc3f7;

  --about-bg: #8ad4c2;
  --about-border: #265856;
}

#rangeButtons .btn.active {
  background-color: var(--btn-active);
  border-color: var(--btn-active);
  color: white;
}

body.dark-mode #rangeButtons .btn.active {
  background-color: rgba(75, 192, 192, 0.25);
  border-color: rgba(75, 192, 192, 0.5);
  color: white;
}

/* Apply themed elements */
.border,
.card,
.toast,
.modal-content,
#notification-tray,
.chart-container,
.wrapper {
  background-color: var(--card-bg);
  border-color: var(--border-color);
  color: var(--text-color);
}

.btn,
#rangeButtons .btn {
  background-color: var(--btn-bg);
  color: var(--text-color);
  border: 2px solid var(--btn-border);
}

#rangeButtons .btn.active {
  background-color: var(--btn-active);
  border-color: var(--btn-active);
  color: white;
}

/* ----------------- ICON BUTTONS ----------------- */
.icon-btn {
  background: none;
  border: none;
  padding: 6px;
  margin: 0;
  outline: none;
  box-shadow: none;
  border-radius: 8px;
  transition: background 0.2s;
}

.icon-btn:hover {
  background-color: rgba(0, 0, 0, 0.05);
  cursor: pointer;
}

body.dark-mode .icon-btn:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* ----------------- ABOUT ICON ----------------- */
.about-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  height: 36px;
  width: 36px;
}

.about-icon .circle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--bg-color);
  border: 2px solid black;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 0.5rem;
  transition: background-color 0.3s, border-color 0.3s;
}

.about-icon .icon-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1;
  color: black;
}

.about-icon .icon-i {
  font-size: 0.8rem;
}

.about-icon .label {
  font-size: 0.5rem;
}

body.dark-mode .about-icon .circle {
  background-color: #81cfc4;
  border-color: #235a58;
}

body.dark-mode .about-icon .icon-text {
  color: black;
}