:root {
  --navy: #1B263B;
  --yellow: #FCBF49;
  --white: #EDF6F9;
  --font: 'Poppins', Arial, sans-serif;

  /* Default Dark Theme Colors */
  --bg-color: var(--navy);
  --text-color: var(--white);
  --bubble-text-color: #333;
  --settings-icon-bg: var(--white);
  --settings-icon-stroke: var(--navy);
  --modal-bg-color: var(--white);
  --modal-text-color: var(--navy);
  --toggle-bg: var(--white);
  --toggle-knob: var(--yellow);
  --action-icon-invert: 0%; /* Dark mode: no invert */
}

body.light-mode {
   /* Light Theme Color Overrides */
  --bg-color: var(--white);
  --text-color: var(--navy);
  /* --bubble-text-color remains #333 as it's on a yellow background */
  --settings-icon-bg: var(--navy);
  --settings-icon-stroke: var(--white);
  --modal-bg-color: #f0f0f0; /* Slightly off-white for modal in light mode */
  --modal-text-color: var(--navy);
  --toggle-bg: var(--navy);
  --toggle-knob: var(--white);
  --action-icon-invert-light: 100%; /* Light mode: invert to make dark icons visible on light background */
}

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  background: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font);
  box-sizing: border-box;
  transition: background-color 0.3s, color 0.3s;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.navbar {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 36px 56px 0 56px;
  box-sizing: border-box;
}

.navbar-controls-right {
  display: flex;
  flex-direction: row;
  align-items: center;
}

.nav-links {
  display: flex;
  gap: 60px;
}

.nav-link {
  color: var(--text-color);
  text-decoration: none;
  font-size: 1.7rem;
  position: relative;
  padding-bottom: 4px;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--yellow);
}

.nav-link.active {
  font-weight: 500;
  color: var(--yellow);
}

.nav-link.active::after {
  content: '';
  display: block;
  width: 120%;
  height: 5px;
  background: var(--yellow);
  border-radius: 3px;
  position: absolute;
  left: 0%;
  bottom: -5px;
}

.nav-link.active::after, .nav-link:not(.active):hover::after {
  content: '';
  display: block;
  width: 120%; /* Same as active link's underline */
  height: 5px;  /* Same as active link's underline */
  background: var(--yellow);
  border-radius: 3px; /* Same as active link's underline */
  position: absolute;
  left: 0%; /* Same as active link's underline */
  bottom: -5px; /* Same as active link's underline */
}

.delete-btn {
  background-color: #dc3545;
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s;
  margin-right: 20px;
}

.delete-btn:hover {
  background-color: #c82333;
}

.settings-btn {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.settings-btn img {
  display: block;
  width: 40px;
  height: 40px;
  background: transparent; /* Remove background */
  border-radius: 50%;
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 0;
  padding: 20px;
}

.page-heading {
  color: var(--text-color);
  margin-bottom: 40px;
}

.content-wrapper {
  display: flex;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  box-sizing: border-box;
  justify-content: space-between;
  height: 100%;
  min-height: 70vh;
  gap: 60px;
  align-items: stretch;
}

.left-column-wrapper {
  width: 40%;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.left-column {
  width: 100%;
  padding: 20px;
  background-color: var(--white);
  border-radius: 10px;
  margin-bottom: 0;
  color: var(--navy);
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Specific style for the first (upper) box */
.left-column:first-child {
  background-color: var(--yellow);
  margin-bottom: 20px;
}

.right-column {
  width: 50%;
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 20px;
  background-color: var(--white);
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  color: var(--navy);
  box-sizing: border-box;
  position: relative;
  overflow: hidden;
  min-height: 400px;
}

.top-box, .bottom-box {
  margin-bottom: 20px;
}

.activities-list, .conversation-list {
  max-height: 200px;
  overflow-y: auto;
  padding-right: 10px;
  color: var(--navy);
}

.conversation-item {
  margin-bottom: 15px;
  padding: 15px;
  background-color: var(--white);
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.conversation-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.conversation-title-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.conversation-title-container h3 {
  margin: 0;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding-right: 10px;
}

.conversation-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.conversation-item p {
  margin: 0;
  color: var(--navy);
  font-size: 0.9rem;
  opacity: 0.8;
}

.conversation-action-btn {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px; /* Icon size */
    height: 24px; /* Icon size */
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.conversation-action-btn img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: invert(var(--action-icon-invert, 0%)); /* Default for dark mode, no invert */
}

.conversation-action-btn:hover {
    transform: scale(1.1);
    opacity: 0.8;
}

.conversation-action-btn:focus {
    outline: 2px solid var(--yellow);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Light mode specific styles for icons */
body.light-mode .conversation-action-btn img {
    filter: invert(var(--action-icon-invert-light, 100%)); /* Invert for light mode */
}

h2 {
  color: var(--navy);
  margin-top: 0;
}

/* Light mode specific styles */
body.light-mode .left-column {
  background-color: var(--navy);
  color: var(--white);
}

body.light-mode .left-column:first-child {
  background-color: var(--yellow);
  color: var(--navy);
}

body.light-mode .right-column {
  background-color: var(--navy);
  color: var(--white);
}

body.light-mode h2 {
  color: inherit;
}

body.light-mode .activities-list,
body.light-mode .conversation-list {
  color: inherit;
}

/* Ensure page heading remains visible in light mode */
body.light-mode .page-heading {
  color: var(--text-color);
}

@media (max-width: 700px) {
  .content-wrapper {
    flex-direction: column;
    padding: 10px;
  }
  .left-column-wrapper {
    width: 100%;
    margin-right: 0;
    margin-bottom: 20px;
  }
  .right-column {
    width: 100%;
    height: auto;
  }
  .left-column {
    padding: 15px;
  }
  .left-column h2, .right-column h2 {
    font-size: 1.2rem;
  }
  .activities-list p, .conversation-item p {
    font-size: 0.9rem;
  }
  .delete-btn {
    padding: 6px 12px;
    font-size: 0.9rem;
    margin-right: 10px;
  }
  #emotion-chart {
    max-height: 250px;
  }
}

/* Settings Modal Styles */
.settings-modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(27, 38, 59, 0.6);
  align-items: center;
  justify-content: center;
}

.settings-modal-content {
  background: var(--modal-bg-color);
  color: var(--modal-text-color);
  margin: auto;
  padding: 32px 24px 24px 24px;
  border-radius: 18px;
  width: 90%;
  max-width: 400px;
  position: relative;
  box-shadow: 0 8px 32px rgba(27,38,59,0.18);
  text-align: center;
}

.close-modal {
  position: absolute;
  top: 12px;
  right: 18px;
  font-size: 2rem;
  font-weight: bold;
  color: var(--modal-text-color);
  cursor: pointer;
  transition: color 0.2s;
  line-height: 1;
  padding: 0;
  background: none;
  border: none;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.close-modal:hover {
  color: var(--yellow);
  transform: scale(1.1);
}

.settings-modal-content h2 {
  margin-top: 0;
  margin-bottom: 28px;
  font-size: 1.8rem;
  color: var(--modal-text-color);
}

.settings-modal-content h6 {
  margin-top: 10px;
  margin-bottom: 5px;
  font-size: 0.8rem;
  color: var(--yellow);
}

.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
  border-bottom: 1px solid #ddd;
  color: var(--modal-text-color);
}

.setting-item:last-child {
  border-bottom: none;
}

.setting-item label {
  font-size: 1rem;
  font-weight: 500;
}

.settings-link {
  color: var(--modal-text-color);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  transition: color 0.2s;
}

.settings-link-with-icon {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.settings-link-with-icon:hover,
.settings-link-with-icon:hover span {
  color: var(--modal-text-color);
  text-decoration: none;
}

.setting-item a img {
  width: 20px;
  height: 20px;
}

/* Modal Toggle Switch Styles */
.modal-toggle label {
  width: 50px;
  height: 25px;
  background: var(--toggle-bg);
  border-radius: 12px;
  border: 1px solid #000;
  box-sizing: border-box;
}

.modal-toggle label::after {
  width: 18px;
  height: 18px;
  top: 2px;
  background: var(--toggle-knob);
}

/* Dark Mode: Knob on the left */
.modal-toggle input#darkModeToggleModal:checked + label::after {
  left: 3px;
}

/* Light Mode: Knob on the right */
.modal-toggle input#darkModeToggleModal:not(:checked) + label::after {
  left: 27px;
}

.btn-primary {
  background-color: var(--yellow);
  color: var(--navy);
  border: none;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn-primary:hover:not(:disabled) {
  background-color: #fca833;
}

.btn-primary:disabled {
  background-color: #ccc;
  color: #888;
  cursor: not-allowed;
}

/* Re-add toggle switch styles for the modal */
.toggle-switch {
  position: relative;
  width: 80px;
  height: 10px;
  display: flex;
  align-items: center;
}

.toggle-switch input[type="checkbox"] {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-switch label {
  display: block;
  width: 50px;
  height: 25px;
  background: var(--toggle-bg);
  border-radius: 20px;
  position: relative;
  cursor: pointer;
  transition: background 0.3s;
  border: 1px solid #000;
  box-sizing: border-box;
}

.toggle-switch label::after {
  content: '';
  position: absolute;
  top: 2px;
  width: 18px;
  height: 18px;
  background: var(--toggle-knob);
  border-radius: 50%;
  transition: left 0.3s, background-color 0.3s;
}

/* Conversations Modal Styles */
.conversations-modal {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(4px);
}

.conversations-modal-content {
    background-color: var(--white);
    padding: 24px;
    border-radius: 12px;
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
    padding-right: 30px; /* Make room for the close button */
}

.modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--navy);
    flex: 1;
}

.close-modal {
    position: absolute;
    top: 16px;
    right: 16px;
    font-size: 2rem;
    font-weight: bold;
    color: var(--navy);
    cursor: pointer;
    transition: all 0.2s ease;
    line-height: 1;
    padding: 0;
    background: none;
    border: none;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--white);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.close-modal:hover {
    color: var(--yellow);
    transform: scale(1.1);
    background-color: var(--white);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.close-modal:focus {
    outline: 2px solid var(--yellow);
    outline-offset: 2px;
}

/* Light mode specific styles */
body.light-mode .conversations-modal-content {
    background-color: var(--navy);
}

body.light-mode .modal-header h2 {
    color: var(--white);
}

body.light-mode .close-modal {
    color: var(--white);
    background-color: var(--navy);
}

body.light-mode .close-modal:hover {
    color: var(--yellow);
    background-color: var(--navy);
}

.conversation-messages {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin: 20px 0;
}

.message {
    display: flex;
    flex-direction: column;
    max-width: 80%;
    padding: 12px;
    border-radius: 12px;
    position: relative;
}

.message.user {
    align-self: flex-end;
    background-color: var(--navy);
    color: var(--white);
}

.message.assistant {
    align-self: flex-start;
    background-color: var(--yellow);
    color: var(--navy);
}

.message-content {
    margin-bottom: 4px;
    line-height: 1.4;
}

.message-timestamp {
    font-size: 0.8rem;
    opacity: 0.7;
    align-self: flex-end;
}

.message-feeling {
    font-size: 0.9rem;
    margin-top: 4px;
    opacity: 0.9;
}

/* Light mode specific styles */
body.light-mode .conversation-item {
    background-color: var(--navy);
}

body.light-mode .conversation-item h3,
body.light-mode .conversation-item p {
    color: var(--white);
}

body.light-mode .conversations-modal-content {
    background-color: var(--navy);
    color: var(--white);
}

body.light-mode .message.user {
    background-color: var(--yellow);
    color: var(--navy);
}

body.light-mode .message.assistant {
    background-color: var(--navy);
    color: var(--white);
}

@media (max-width: 700px) {
    .conversations-modal-content {
        width: 95%;
        padding: 16px;
    }

    .message {
        max-width: 90%;
        padding: 10px;
    }

    .message-content {
        font-size: 0.9rem;
    }

    .message-timestamp {
        font-size: 0.7rem;
    }
}

#emotion-chart {
  width: 100%;
  height: 100%;
  min-height: 300px;
}

/* New styles for chart container to ensure it takes available space */
.right-column > h2 {
    margin-bottom: 20px;
}

.right-column > canvas {
    flex: 1;
    max-height: 100%;
    box-sizing: border-box;
}

.conversation-detail {
    background-color: var(--white);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.conversation-detail:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: var(--yellow);
}

.conversation-detail:focus {
    outline: none;
    border-color: var(--yellow);
    box-shadow: 0 0 0 2px var(--yellow);
}

.conversation-detail h3 {
    margin: 0 0 8px 0;
    color: var(--navy);
    font-size: 1.1rem;
}

.conversation-detail p {
    margin: 4px 0;
    color: var(--navy);
    font-size: 0.9rem;
    opacity: 0.8;
}

.conversation-detail .message-count {
    color: var(--yellow);
    font-weight: 500;
    margin-top: 8px;
}

/* Light mode specific styles */
body.light-mode .conversation-detail {
    background-color: var(--navy);
}

body.light-mode .conversation-detail h3,
body.light-mode .conversation-detail p {
    color: var(--white);
}

body.light-mode .conversation-detail .message-count {
    color: var(--yellow);
}

/* Lock Animation Styles */
.conversation-list-locked {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    text-align: center;
    min-height: 200px;
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.lock-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 1;
    filter: invert(var(--action-icon-invert, 0%));
    z-index: 5;
}

.lock-message {
    color: var(--navy);
    font-size: 1rem;
    margin: 0;
    opacity: 0.8;
    position: relative;
    z-index: 0;
    background-color: rgba(255, 255, 255, 0.9);
    padding: 10px 20px;
    border-radius: 8px;
    text-align: center;
}

/* Light mode specific styles */
body.light-mode .conversation-list-locked {
    background-color: var(--navy);
}

body.light-mode .lock-message {
    color: var(--white);
    background-color: rgba(27, 38, 59, 0.9);
}

body.light-mode .lock-image {
    filter: invert(var(--action-icon-invert-light, 100%));
}

.bottom-box {
  position: relative;
  overflow: hidden;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.conversation-list {
  flex: 1;
  overflow-y: auto;
  padding-right: 10px;
  color: var(--navy);
  margin-bottom: 8px;
  max-height: 150px;
}

.bottom-box-buttons {
  display: flex;
  gap: 10px;
  margin-top: auto;
}

.bottom-box .btn-primary,
.bottom-box .delete-btn {
  margin-top: 0;
}

.lock-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 1;
  filter: invert(var(--action-icon-invert, 0%));
  z-index: 1;
  pointer-events: none;
}

.lock-message {
  color: var(--navy);
  font-size: 1rem;
  margin: 0;
  opacity: 0.8;
  position: relative;
  z-index: 2;
  background-color: rgba(255, 255, 255, 0.9);
  padding: 10px 20px;
  border-radius: 8px;
  text-align: center;
  pointer-events: none;
}

/* Light mode specific styles */
body.light-mode .lock-message {
  color: var(--white);
  background-color: rgba(27, 38, 59, 0.9);
}

body.light-mode .lock-image {
  filter: invert(var(--action-icon-invert-light, 100%));
}