:root {
  --bg-color: #f4f4f4;
  --text-color: #333;
  --heading-color: #333;
  --card-bg-color: #fff;
  --card-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  --input-border-color: #ccc;
  --input-bg-color: #fff;
  --input-text-color: #333;
  --button-bg-color: #5cb85c;
  --button-text-color: white;
  --button-hover-bg-color: #4cae4c;
  --border-color: #eee;
  --label-color: #333;
  --toggle-bg: #ddd;
  --toggle-fg: #fff;
  --toggle-border: #ccc;
}

[data-theme="dark"] {
  --bg-color: #1a1a1a;
  --text-color: #e0e0e0;
  --heading-color: #f0f0f0;
  --card-bg-color: #2a2a2a;
  --card-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  --input-border-color: #555;
  --input-bg-color: #333;
  --input-text-color: #e0e0e0;
  --button-bg-color: #3a7a3a;
  --button-text-color: #e0e0e0;
  --button-hover-bg-color: #2d5c2d;
  --border-color: #444;
  --label-color: #e0e0e0;
  --toggle-bg: #555;
  --toggle-fg: #1a1a1a;
  --toggle-border: #777;
}

body {
  font-family: sans-serif;
  margin: 20px;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
}

#theme-toggle {
  position: absolute;
  top: 15px;
  right: 20px;
  padding: 5px 10px;
  background-color: var(--toggle-bg);
  color: var(--toggle-fg);
  border: 1px solid var(--toggle-border);
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  /* Reset button styles */
  width: auto;
  margin-top: 0;
}
#theme-toggle:hover {
  opacity: 0.8;
}

h1,
h2 {
  color: var(--heading-color);
  text-align: center;
}

#goal-setup,
#weekly-view {
  background-color: var(--card-bg-color);
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 8px;
  box-shadow: var(--card-shadow);
  transition: background-color 0.3s;
}

#goal-inputs div {
  margin-bottom: 10px;
}

#goal-inputs label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
  color: var(--label-color);
}

#goal-inputs input[type="text"] {
  width: calc(100% - 22px); /* Adjust for padding/border */
  padding: 10px;
  border: 1px solid var(--input-border-color);
  border-radius: 4px;
  background-color: var(--input-bg-color);
  color: var(--input-text-color);
}

/* Style for the main save button */
#goal-form button[type="submit"] {
  display: block;
  width: 100%;
  padding: 10px;
  background-color: var(--button-bg-color);
  color: var(--button-text-color);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
  margin-top: 10px;
  transition: background-color 0.2s;
}

#goal-form button[type="submit"]:hover {
  background-color: var(--button-hover-bg-color);
}

#goals-display .goal-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
}

#goals-display .goal-item:last-child {
  border-bottom: none;
}

#goals-display .goal-name {
  flex-grow: 1;
  margin-right: 10px;
  cursor: pointer; /* Indicate it's editable */
  color: var(--text-color); /* Ensure goal name color updates */
}

#goals-display .weekly-checkboxes {
  display: flex;
  gap: 5px;
}

#goals-display input[type="checkbox"] {
  cursor: pointer;
  /* Optional: Style checkboxes for dark mode if needed */
}

/* --- Week Navigation Styles --- */
#week-navigation {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
}

#week-navigation button {
  /* Reset general button styles */
  width: auto;
  margin-top: 0;
  padding: 5px 10px;
  font-size: 14px;
  background-color: var(--toggle-bg); /* Use toggle colors for consistency */
  color: var(--text-color);
  border: 1px solid var(--toggle-border);
}

#week-navigation button:hover {
  opacity: 0.8;
  background-color: var(--toggle-bg); /* Keep background on hover */
}

#week-range-display {
  font-weight: bold;
  color: var(--heading-color);
  text-align: center;
  margin-bottom: 10px;
}

/* Mobile responsive styles for week navigation */
@media (max-width: 600px) {
  #week-navigation {
    flex-direction: column;
    align-items: center;
  }

  #week-range-display {
    margin-bottom: 12px;
    font-size: 16px;
    width: 100%;
  }

  /* Button container for mobile */
  #week-navigation .button-container {
    display: flex;
    justify-content: space-between;
    width: 100%;
    gap: 8px;
  }

  #week-navigation button {
    padding: 8px 12px; /* Larger touch targets */
    font-size: 14px;
    min-width: 70px; /* Ensure buttons have enough width */
  }
}

/* Style for the day headers above checkboxes */
.day-header-container {
  display: flex;
  justify-content: flex-end; /* Align with checkboxes */
  margin-bottom: 5px;
  padding-right: 5px; /* Align with checkbox container */
}

.day-header {
  width: 20px; /* Approximate width of a checkbox + gap */
  text-align: center;
  font-size: 12px;
  color: var(--text-color);
  margin-left: 5px; /* Match checkbox gap */
}

/* Adjust goal item layout for day headers */
#goals-display .goal-item {
  /* Existing styles */
  padding-top: 5px; /* Add some space above */
  padding-bottom: 5px;
}

#goals-display .weekly-checkboxes {
  /* Existing styles */
  min-width: calc(7 * (20px + 5px)); /* Match 7 day headers + gaps */
  justify-content: flex-start; /* Align checkboxes to the left */
}

#goals-display input[type="checkbox"] {
  /* Existing styles */
  min-width: 20px; /* Ensure checkbox takes up space */
  margin: 0; /* Remove default margins */
}

/* --- Header Styles --- */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 10px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  position: relative; /* Needed for absolute positioning of theme toggle */
}

header h1 {
  margin: 0;
  text-align: left; /* Override general h1 center align */
}

#user-info {
  display: flex;
  align-items: center;
  gap: 15px;
}

#user-info span {
  font-weight: bold;
}

#user-info button {
  /* Logout and Theme Toggle */
  width: auto;
  margin-top: 0;
  padding: 5px 10px;
  font-size: 12px;
  background-color: var(--toggle-bg);
  color: var(--text-color);
  border: 1px solid var(--toggle-border);
}
#user-info button:hover {
  opacity: 0.8;
  background-color: var(--toggle-bg);
}

/* Override theme toggle positioning */
#theme-toggle {
  position: static; /* Remove absolute positioning */
}

/* --- Authentication Styles --- */
#auth-section {
  max-width: 400px;
  margin: 40px auto;
  padding: 30px;
  background-color: var(--card-bg-color);
  border-radius: 8px;
  box-shadow: var(--card-shadow);
  text-align: center;
}

#auth-section h2 {
  margin-bottom: 20px;
}

#auth-section form div {
  margin-bottom: 15px;
  text-align: left;
}

#auth-section label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
  color: var(--label-color);
}

#auth-section input[type="text"],
#auth-section input[type="password"] {
  width: calc(100% - 22px); /* Adjust for padding/border */
  padding: 10px;
  border: 1px solid var(--input-border-color);
  border-radius: 4px;
  background-color: var(--input-bg-color);
  color: var(--input-text-color);
  font-size: 14px;
}

#auth-section button[type="submit"] {
  display: block;
  width: 100%;
  padding: 12px;
  background-color: var(--button-bg-color);
  color: var(--button-text-color);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
  margin-top: 10px;
  transition: background-color 0.2s;
}

#auth-section button[type="submit"]:hover {
  background-color: var(--button-hover-bg-color);
}

#auth-section p {
  margin-top: 20px;
  font-size: 14px;
}

.link-button {
  background: none;
  border: none;
  color: var(--button-bg-color);
  text-decoration: underline;
  cursor: pointer;
  padding: 0;
  font-size: 14px;
}

.link-button:hover {
  color: var(--button-hover-bg-color);
}

.error-message {
  color: #d9534f; /* Red color for errors */
  font-size: 13px;
  margin-top: 5px;
  text-align: left;
  min-height: 15px; /* Prevent layout shifts */
}

[data-theme="dark"] .error-message {
  color: #f08080; /* Lighter red for dark mode */
}