:root {
  --bg-color: #f8f9fa;
  --text-color: #212529;
  --header-bg: #e9ecef;
  --header-text: #343a40;
  --section-bg: #ffffff;
  --section-shadow: rgba(0, 0, 0, 0.05);
  --section-shadow-hover: rgba(0, 0, 0, 0.1);
  --border-color: #dee2e6;
  --button-bg: #007bff;
  --button-hover-bg: #0056b3;
  --button-text: white;
  --input-border: #ced4da;
  --table-header-bg: #f1f3f5;
  --footer-bg: #e9ecef;
  --modal-bg: #fefefe;
  --modal-border: #adb5bd;
  --stats-notice-bg: #e6f7ff;
  --stats-notice-text: #005f99;
  --stats-notice-border: #91d5ff;
  --tooltip-bg: #343a40;
  --tooltip-text: #ffffff;
  --card-bg: #ffffff;
  --card-shadow: rgba(0, 0, 0, 0.04);
  --card-shadow-hover: rgba(0, 0, 0, 0.07);
  --error-notice-bg: #ffe3e3;
  --error-notice-text: #d93025;
  --error-notice-border: #f5c6cb;
  --add-entry-button-hover: #0056b3;
  --text-color-rgb: 33, 37, 41;
}

html.dark-theme body {
  --bg-color: #121212;
  --text-color: #e0e0e0;
  --header-bg: #1e1e1e;
  --header-text: #e0e0e0;
  --section-bg: #1e1e1e;
  --section-shadow: rgba(0, 0, 0, 0.3);
  --section-shadow-hover: rgba(0, 0, 0, 0.45);
  --border-color: #393939;
  --button-bg: #9333ea;
  --button-hover-bg: #7e22ce;
  --button-text: #ffffff;
  --input-border: #444;
  --table-header-bg: #2a2a2a;
  --footer-bg: #1e1e1e;
  --modal-bg: #2c2c2c;
  --modal-border: #444;
  --stats-notice-bg: #1e3a5f;
  --stats-notice-text: #90caf9;
  --stats-notice-border: #42a5f5;
  --tooltip-bg: #f0f0f0;
  --tooltip-text: #121212;
  --card-bg: #2c2c2c;
  --card-shadow: rgba(0, 0, 0, 0.2);
  --card-shadow-hover: rgba(0, 0, 0, 0.3);
  --error-notice-bg: #420000;
  --error-notice-text: #ffcdd2;
  --error-notice-border: #b71c1c;
  --add-entry-button-hover: #7e22ce;
  --text-color-rgb: 224, 224, 224;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
}

body {
  background: var(--bg-color);
  color: var(--text-color);
  padding: 15px;
  line-height: 1.6;
  transition: background 0.3s ease, color 0.3s ease;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--header-bg);
  color: var(--header-text);
  padding: 1rem 1.5rem;
  border-radius: 12px;
  margin-bottom: 20px;
  transition: background 0.3s ease, color 0.3s ease;
  flex-wrap: wrap;
  gap: 15px;
}

.header-subtitle {
  /* Adjusted for direct styling, removed nested <small> tags */
  font-size: 0.7em; /* Or whatever size matches your original visual intent */
  opacity: 0.8;
  font-style: italic;
  font-weight: normal;
}

.header-controls {
  display: flex;
  gap: 20px;
  align-items: center;
}

.unit-switch select {
  padding: 0.5rem 0.75rem;
  height: 42px;
  border-radius: 8px;
  border: 1px solid var(--input-border);
  background-color: var(--section-bg);
  color: var(--text-color);
  transition: background 0.3s ease, color 0.3s ease;
  width: 180px;
}

.theme-switch {
  display: flex;
  align-items: center;
  gap: 10px;
}
.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}
.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
}
.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
}
body.transitions-enabled .slider {
  transition: 0.4s;
}
body.transitions-enabled .slider:before {
  transition: 0.4s;
}
input:checked + .slider {
  background-color: var(--button-bg);
}
/* Removed the box-shadow on focus for the slider to get rid of the blue glow */
input:focus + .slider {
  box-shadow: none;
  outline: none; /* Ensure no default outline */
}
input:checked + .slider:before {
  transform: translateX(20px);
}
.slider.round {
  border-radius: 24px;
}
.slider.round:before {
  border-radius: 50%;
}
#themeLabel {
  color: var(--header-text);
  min-width: 110px;
  display: inline-block;
  text-align: left;
  white-space: nowrap;
}

section {
  margin-bottom: 20px;
  background: var(--section-bg);
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 12px var(--section-shadow);
  transition: box-shadow 0.3s ease-in-out, background 0.3s ease, color 0.3s ease;
}
section:hover {
  box-shadow: 0 6px 18px var(--section-shadow-hover);
}

h2 {
  margin-bottom: 15px;
  font-size: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 10px;
  transition: border-color 0.3s ease;
}

#entryForm form input,
#entryForm form button,
.car-controls input,
.car-controls select,
.car-controls button {
  padding: 0.5rem 0.75rem;
  height: 42px;
  border: 1px solid var(--input-border);
  border-radius: 8px;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: all 0.2s ease-in-out;
  font-size: 1rem;
}
#entryForm form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}
.car-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  min-height: 20px;
}
.log-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  margin-bottom: 15px;
}

button,
.btn {
  background: var(--button-bg);
  color: var(--button-text);
  border: none;
  padding: 0.5rem 1rem;
  height: 42px;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease, color 0.2s ease;
  font-size: 0.95rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
button:hover {
  background: var(--button-hover-bg);
  transform: translateY(-1px);
  color: var(--button-text);
}
button:active {
  transform: translateY(1px);
}

#entryForm button[type="submit"]:hover {
  background: var(--add-entry-button-hover);
  color: var(--button-text);
}

.table-container {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 15px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

#logTable {
  width: 100%;
  border-collapse: collapse;
  min-width: 750px;

  border-radius: 8px;
  overflow: hidden;
}

#logTable th,
#logTable td {
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1rem;
  text-align: left;
  vertical-align: middle;
  transition: border-color 0.3s ease;
  white-space: nowrap;
}
#logTable th {
  background-color: var(--table-header-bg);
  font-weight: 600;
}
#logTable tbody tr:last-child td {
  border-bottom: none;
}
#logTable tbody tr.first-entry {
  background-color: var(--stats-notice-bg);
  font-style: italic;
}
#logTable tbody tr.first-entry td {
  color: var(--stats-notice-text);
}
#logTable tbody tr.invalid-entry {
  background-color: var(--error-notice-bg);
}
#logTable tbody tr.invalid-entry td {
  color: var(--error-notice-text);
}

#logTable tbody tr td[colspan="7"] {
  padding-top: 10px;
  padding-bottom: 10px;
  text-align: center;
  font-style: italic;
  color: var(--text-color);
  opacity: 0.8;
}

#logNoticesContainer {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 0px;
}

.stats-notice {
  padding: 15px;

  margin-bottom: 0;
  background-color: var(--stats-notice-bg);
  color: var(--stats-notice-text);
  border: 1px solid var(--stats-notice-border);
  border-radius: 8px;
  text-align: center;
  transition: all 0.3s ease;
}
.error-notice {
  margin-bottom: 5px;
  background-color: var(--error-notice-bg);
  color: var(--error-notice-text);
  border: 1px solid var(--error-notice-border);
}

#statsNotice,
#ownershipCostNotice,
#chartsNotice {
  margin-bottom: 15px;
}

.chart-display-area {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 20px;
}

@media (min-width: 1024px) {
  .chart-display-area {
    grid-template-columns: repeat(2, 1fr);
  }
}

.chart-container {
  padding: 15px;
  border-radius: 12px;
  cursor: pointer;
  transition: background 0.3s ease, color 0.3s ease, box-shadow 0.3s ease,
    transform 0.2s ease;
  background-color: var(--card-bg);
  box-shadow: 0 2px 5px var(--card-shadow);
}
.chart-container:hover {
  box-shadow: 0 6px 18px var(--section-shadow-hover);
  transform: translateY(-2px);
}
canvas {
  max-width: 100%;
  height: 400px;
  width: 100%;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  transition: border-color 0.3s ease;
}
.btn-full-width {
  width: 100%;
}
.charts-export-buttons {
  margin-top: 20px;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
@keyframes slideUpFadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal {
  display: flex;
  justify-content: center;
  align-items: center;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0s 0.3s;
}

.modal.visible {
  opacity: 1;
  visibility: visible;
  transition: opacity 0.3s ease;
}

.modal-content {
  background-color: var(--modal-bg);
  color: var(--text-color);
  margin: auto;
  padding: 20px;
  border: 1px solid var(--modal-border);
  width: 90%;
  max-width: 550px;
  max-height: 90vh;
  overflow-y: auto;
  border-radius: 12px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  text-align: center;
  transition: all 0.3s ease;
}
.modal.visible .modal-content {
  animation: slideUpFadeIn 0.4s ease forwards;
}
.modal-content ol {
  list-style-position: inside;
  text-align: left;
  margin: 15px 0;
  padding-left: 20px;
}

#chartModal .modal-content {
  max-width: 95vw;
  max-height: 95vh;
  width: auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  overflow-y: hidden;
  padding: 20px;
}
#modalChartImage {
  max-width: 100%;
  max-height: 70vh;
  height: auto;
  width: auto;
  margin: 15px 0;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  object-fit: contain;
}
.modal-actions {
  margin-top: 20px;
  display: flex;
  flex-direction: row;
  gap: 10px;
  width: 100%;
  padding: 0;
}
.btn-modal-full {
  flex: 1;
  width: auto;
}
.hidden {
  display: none !important;
}

.collapsible-section {
  max-height: 0;
  opacity: 0;
  overflow: hidden;

  padding-bottom: 0 !important;
  transition: max-height 0.5s ease-out, opacity 0.5s ease-out,
    padding-bottom 0.5s ease-out;
}

.collapsible-section.active {
  max-height: 1000px;
  opacity: 1;

  padding-bottom: 20px !important;
}

footer {
  text-align: center;
  padding: 1.5rem;
  background: var(--footer-bg);
  border-radius: 12px;
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 15px;
  transition: background 0.3s ease, color 0.3s ease;
}
footer p {
  font-size: 0.9rem;
  font-weight: bold;
}
footer a {
  color: var(--button-bg);
}

#statsControlsContainer {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding: 15px;
  background-color: var(--card-bg);
  border-radius: 8px;
  box-shadow: 0 2px 5px var(--card-shadow);
  margin-top: 15px;
}
#statsControlsContainer .accordion-controls,
#statsControlsContainer .stats-export-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.full-width-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 15px;
}

.accordion-container {
  margin-top: 15px;
  margin-bottom: 20px;
}
.accordion-container details {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 10px;
  background-color: var(--section-bg);
  transition: background-color 0.2s ease;
}
.accordion-container details[open] {
  background-color: var(--bg-color);
}
.accordion-container summary {
  cursor: pointer;
  padding: 0.75rem 1rem;
  outline: none;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: bold;
  position: relative;
  color: var(--text-color);
}
.accordion-container summary::-webkit-details-marker {
  display: none;
}
.accordion-container summary::before {
  content: "►";
  display: inline-block;
  margin-right: 8px;
  transition: transform 0.2s ease-in-out;
  color: var(--text-color);
}
.accordion-container details[open] > summary::before {
  transform: rotate(90deg);
}
.accordion-content {
  padding: 0 1rem 1rem 2.5rem;
}

.tooltip-icon {
  position: relative;
  display: inline-block;
  cursor: help;
  font-size: 1rem;
  font-weight: bold;
  color: var(--button-bg);
  line-height: 1;
  transition: color 0.3s ease;
  border: 1px solid var(--button-bg);
  border-radius: 50%;
  width: 22px;
  height: 22px;
  text-align: center;
}
.tooltip-icon:hover {
  color: var(--button-hover-bg);
  border-color: var(--button-hover-bg);
}
.tooltip-icon .tooltip-text {
  visibility: hidden;
  width: 250px;
  background-color: var(--tooltip-bg);
  color: var(--tooltip-text);
  text-align: center;
  border-radius: 6px;
  padding: 10px;
  position: absolute;
  z-index: 1;
  bottom: 125%;
  left: 50%;
  margin-left: -125px;
  opacity: 0;
  transition: opacity 0.3s;
  font-weight: normal;
  font-size: 0.9rem;
}
.tooltip-icon:hover .tooltip-text {
  visibility: visible;
  opacity: 1;
}

#statsContent,
.stats-grid-container,
#ownershipCostContent {
  display: grid;
  gap: 15px;
  margin-top: 15px;
  padding: 0;

  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

@media (min-width: 768px) and (max-width: 1023px) {
  #statsContent,
  .stats-grid-container,
  #ownershipCostContent {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  #statsContent,
  .stats-grid-container,
  #ownershipCostContent {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
}

.stat-card {
  width: 100%;
}

.stat-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 15px;
  background-color: var(--card-bg);
  border-radius: 8px;
  box-shadow: 0 2px 5px var(--card-shadow);
  transition: all 0.3s ease;
}

.stat-card p {
  width: 100%;
  margin: 0;
}
.stat-card:hover {
  box-shadow: 0 4px 10px var(--card-shadow-hover);
  transform: translateY(-2px);
}

.modal-content.large {
  max-width: 95%;
  width: auto;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}
.modal-table-container {
  overflow-y: auto;
  overflow-x: auto;
  margin: 15px 0;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 2px 5px var(--section-shadow);
}
#editLogTable {
  width: 100%;
  border-collapse: collapse;
  min-width: 500px;
}
#editLogTable th,
#editLogTable td {
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem;
  text-align: center;
}
#editLogTable th {
  background-color: var(--table-header-bg);
  font-weight: 600;
}
#editLogTable tbody tr:last-child td {
  border-bottom: none;
}
#editLogTable tbody tr:nth-child(even) {
  background-color: rgba(var(--text-color-rgb), 0.03);
}
html.dark-theme #editLogTable tbody tr:nth-child(even) {
  background-color: rgba(var(--text-color-rgb), 0.05);
}

#editLogTable input {
  width: calc(100% - 16px);
  padding: 0.75rem;
  border: 1px solid var(--input-border);
  border-radius: 4px;
  box-sizing: border-box;
  margin: 0;
  text-align: center;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-size: 1rem;
}

.delete-btn {
  background: none;
  border: none;
  color: #ff4757;
  cursor: pointer;
  font-size: 1.5rem;
  padding: 0 10px;
  transition: transform 0.2s ease, color 0.2s ease;
  height: auto;
}
.delete-btn:hover {
  color: #e04757;
  transform: scale(1.2);
  background: none;
}
.delete-btn:active {
  transform: scale(1.1);
}

.sortable-header {
  cursor: pointer;
  position: relative;
  user-select: none;
  padding-right: 30px !important;
}
.sortable-header::after {
  content: "";
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.5;
  font-size: 1.2em;
  transition: all 0.2s ease;
  border: 4px solid transparent;
}
.sortable-header:hover::after {
  opacity: 1;
}
.sortable-header.sort-asc::after {
  content: "";
  border-bottom-color: var(--text-color);
  margin-top: -6px;
}
.sortable-header.sort-desc::after {
  content: "";
  border-top-color: var(--text-color);
  margin-top: 2px;
}
.sortable-header:not(.sort-asc):not(.sort-desc)::after {
  content: "↕";
  border: none;
  font-size: 1em;
}

@media (max-width: 768px) {
  body {
    padding: 10px;
  }
  header {
    padding: 1rem;
  }
  .chart-display-area {
    grid-template-columns: 1fr;
  }
  #statsControlsContainer {
    grid-template-columns: 1fr;
  }

  #chartModal .modal-actions {
    flex-direction: column;
  }
}

@media (max-width: 600px) {
  body {
    padding: 10px;
  }
  header {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }
  .header-subtitle {
    /* Hide subtitle on small screens */
    display: none;
  }
  .header-controls {
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }
  .unit-switch {
    width: 100%;
    justify-content: space-between;
  }
  .theme-switch {
    /* Adjusted for better appearance on skinnier screens */
    width: auto; /* Allow it to size based on content */
    margin: 0 auto; /* Center it horizontally within the header's column layout */
    /* Removed justify-content as margin auto handles centering for block-level elements */
  }
  .log-controls {
    grid-template-columns: 1fr 1fr;
  }
  .log-controls button:nth-child(5) {
    /* Target "Clear Current Car Data" button */
    grid-column: span 2; /* Make it span two columns */
  }
  #entryForm button[type="submit"] {
    /* New rule for Add Entry button */
    grid-column: span 2; /* Make it span two columns */
  }
  #statsControlsContainer .accordion-controls,
  #statsControlsContainer .stats-export-buttons {
    grid-template-columns: 1fr;
  }
  .full-width-controls {
    grid-template-columns: 1fr;
  }
  .full-width-controls button {
    /* Target buttons in full-width-controls */
    grid-column: span 2; /* Make them span two columns */
  }
}