/* Dark Mode CSS Variables and Styles */
:root {
  --bg-color: #ffffff;
  --text-color: #333333;
  --hero-bg: linear-gradient(90deg, #e3ffe8 0%, #f9f9ff 100%);
  --feature-box-bg: #ffffff;
  --feature-box-border: #e0e0e0;
  --breadcrumb-bg: rgba(255, 255, 255, 0.8);
  --accordion-bg: #ffffff;
  --accordion-border: #dee2e6;
  --link-color: #0d6efd;
  --muted-color: #6c757d;
  --shadow: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
  --bg-color: #1a1a1a;
  --text-color: #e0e0e0;
  --hero-bg: linear-gradient(90deg, #2d4a2d 0%, #2a2a3a 100%);
  --feature-box-bg: #2d2d2d;
  --feature-box-border: #404040;
  --breadcrumb-bg: rgba(45, 45, 45, 0.9);
  --accordion-bg: #2d2d2d;
  --accordion-border: #404040;
  --link-color: #66b3ff;
  --muted-color: #a0a0a0;
  --shadow: rgba(255, 255, 255, 0.1);
}

/* Apply theme variables */
body {
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.hero-section {
  background: var(--hero-bg) !important;
}

.feature-box {
  background-color: var(--feature-box-bg);
  border: 1px solid var(--feature-box-border);
  box-shadow: 0 2px 10px var(--shadow);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.breadcrumb {
  background-color: var(--breadcrumb-bg);
  transition: background-color 0.3s ease;
}

.accordion-item {
  background-color: var(--accordion-bg);
  border-color: var(--accordion-border);
}

.accordion-button {
  background-color: var(--accordion-bg);
  color: var(--text-color);
  border-color: var(--accordion-border);
}

.accordion-button:not(.collapsed) {
  background-color: var(--feature-box-bg);
  color: var(--text-color);
}

.accordion-body {
  background-color: var(--accordion-bg);
  color: var(--text-color);
}

.breadcrumb-item a,
.calculator-link,
a {
  color: var(--link-color);
}

.text-muted {
  color: var(--muted-color) !important;
}

.toc-container {
  background-color: var(--feature-box-bg);
  border: 1px solid var(--feature-box-border);
  padding: 20px;
  border-radius: 8px;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.toc-container a {
  color: var(--link-color);
}

/* Dark Mode Toggle Button - Updated to Bottom Right */
.dark-mode-toggle {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
  background: var(--feature-box-bg);
  border: 2px solid var(--feature-box-border);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 12px var(--shadow);
  transition: all 0.3s ease;
  color: var(--text-color);
}

.dark-mode-toggle:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px var(--shadow);
}

.dark-mode-toggle i {
  font-size: 20px;
  transition: transform 0.3s ease;
}

.dark-mode-toggle:hover i {
  transform: rotate(180deg);
}

/* Images in dark mode */
[data-theme="dark"] .converter-image {
  opacity: 0.9;
  border-radius: 8px;
}

/* Additional dark mode styles for better readability */
[data-theme="dark"] .display-5 {
  color: #4CAF50;
}

[data-theme="dark"] .text-success {
  color: #66bb6a !important;
}

[data-theme="dark"] .text-info {
  color: #4fc3f7 !important;
}

[data-theme="dark"] .text-warning {
  color: #ffb74d !important;
}

[data-theme="dark"] .text-primary {
  color: #64b5f6 !important;
}

[data-theme="dark"] .text-dark {
  color: var(--text-color) !important;
}

/* Smooth transitions for all elements */
* {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Mobile responsiveness for toggle button */
@media (max-width: 768px) {
  .dark-mode-toggle {
    bottom: 15px;
    right: 15px;
    width: 45px;
    height: 45px;
  }
  
  .dark-mode-toggle i {
    font-size: 18px;
  }
}