/* Global font size variable */
:root {
    --base-font-size: clamp(15px, 2.5vw, 18px);
    /* Global theme variables */
    --bg-color: #e5e7eb; /* gray-200 */
    --text-color: #1f2937; /* gray-800 */
    --card-bg: #f9fafb; /* gray-50 */
    --border-color: #d1d5db; /* gray-300 */
    --accent-bg: #3b82f6; /* blue-500 */
    --accent-text: #fff;
    --danger-bg: #dc3545;
    --danger-text: #fff;
    --subtle-text: #6b7280; /* gray-500 */
    --shadow-color: rgba(0,0,0,0.1);
}
html.dark {
    --bg-color: #121212;
    --text-color: #f9fafb; /* gray-50 */
    --card-bg: #1f2937; /* gray-800 */
    --border-color: #4b5563; /* gray-600 */
    --accent-bg: #3b82f6; /* blue-500 */
    --accent-text: #fff;
    --danger-bg: #c82333;
    --danger-text: #fff;
    --subtle-text: #9ca3af; /* gray-400 */
    --shadow-color: rgba(0,0,0,0.4);
}
html {
    font-size: var(--base-font-size);
}
body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background-color: var(--bg-color);
  margin: 0;
  padding: 0.25rem;
  transition: background-color 0.3s;
}

html.dark body {
    background-color: var(--bg-color);
}

.page-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background-color: var(--bg-color);
  display: flex;
  justify-content: center; /* Center the tabs */
  align-items: center; /* Vertically align items */
  max-width: 1200px;
  margin: 0 auto 0.25rem; /* Add margin to bottom */
  border-bottom: 2px solid #d4d4d8; /* Move border to page-header */
}

.tabs {
  display: flex;
}

.tab-button {
  padding: 10px 20px;
  cursor: pointer;
  border: none;
  background-color: transparent;
  font-size: 1rem;
  font-weight: 500;
  color: #52525b;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color 0.3s, border-color 0.3s;
}

html.dark .tab-button {
    color: var(--subtle-text);
}

.tab-button.active {
  color: var(--accent-bg);
  border-bottom-color: var(--accent-bg);
}

html.dark .tab-button.active {
    color: var(--accent-bg);
    border-bottom-color: var(--accent-bg);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.content-container {
  max-width: 1200px;
  margin: 0 auto;
}

.theme-toggle-button {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem; /* Reduced padding */
  border-radius: 9999px;
  color: #6b7280; /* text-gray-500 */
  transition: background-color 0.2s, color 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.theme-toggle-button:hover {
  background-color: #f3f4f6; /* bg-gray-100 */
}
html.dark .theme-toggle-button {
  color: #9ca3af; /* dark:text-gray-400 */
}
html.dark .theme-toggle-button:hover {
  background-color: #374151; /* dark:bg-gray-700 */
}

.theme-toggle-button svg {
  height: 1.25rem;
  width: 1.25rem;
  transition: transform 0.4s cubic-bezier(0.445, 0.05, 0.55, 0.95), opacity 0.3s;
  position: absolute;
  opacity: 0;
  transform: rotate(-90deg) scale(0.8);
}

.theme-toggle-button svg.is-visible {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.currency-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-color);
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
    cursor: pointer;
}
.currency-btn:not(:first-child) {
    margin-left: -1px;
}
.currency-btn:hover {
    background-color: var(--bg-color);
}
.currency-btn.active {
    background-color: var(--accent-bg);
    color: var(--accent-text);
    border-color: var(--accent-bg);
    z-index: 10;
}
.currency-btn.active:hover {
    color: var(--accent-text);
}

/* Font size control styles (moved from cost-calculator.css) */
.font-size-control {
    display: flex;
    border: 1px solid var(--accent-bg);
    border-radius: 50px;
    overflow: hidden;
}

.font-size-control button {
    background-color: transparent;
    color: var(--accent-bg);
    border: none;
    padding: 2px 10px;
    font-size: 0.9em;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
    transition: background-color 0.3s, color 0.3s;
}

.font-size-control button:first-child {
    border-right: 1px solid var(--accent-bg);
}

.font-size-control button:hover:not(:disabled) {
    background-color: var(--accent-bg);
    color: var(--accent-text);
}

.font-size-control button:disabled {
    color: var(--border-color);
    cursor: not-allowed;
}

/* Footer label (moved from cost-calculator.css) */
.footer-label {
    font-size: 0.8em;
    color: var(--subtle-text);
}

/* Hide spin buttons on number inputs for all browsers */
input[type=number] {
  -moz-appearance: textfield;
  appearance: textfield;
}

input[type=number]::-webkit-outer-spin-button,
input[type=number]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.tooltip-trigger {
    display: inline-flex;
    cursor: help;
    color: var(--accent-text);
    background-color: var(--accent-bg);
    font-weight: normal;
    border-radius: 50%;
    width: 11px;
    height: 11px;
    align-items: center;
    justify-content: center;
    font-size: 8px;
    margin-left: 4px;
    user-select: none; /* prevent text selection on click */
}

.custom-tooltip {
    position: absolute;
    display: none;
    background-color: #333;
    color: #fff;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    z-index: 100;
    max-width: 250px;
    text-align: left;
    pointer-events: none; /* so it doesn't interfere with other mouse events */
}

html.dark .custom-tooltip {
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}
}