/* AutoCode Updated CSS for AI Niche Newsletter Generator */
/* Based on README Design Ideas, HTML structure, and JS functionality */

:root {
  --primary-color: #3498db;
  --primary-hover-color: #2980b9;
  --secondary-color: #7f8c8d; /* For secondary actions like clear/copy/presets */
  --secondary-hover-color: #6c7a7d;
  --accent-color: #2ecc71; /* For copy success or highlights */
  --accent-hover-color: #27ae60;
  --error-color: #e74c3c;
  --error-bg-color: #fdeded;
  --warning-color: #8a6d3b;
  --warning-bg-color: #fcf8e3;
  --warning-border-color: #faebcc;
  --light-gray-color: #f4f7f6;
  --medium-gray-color: #e0e0e0;
  --dark-gray-color: #7f8c8d;
  --text-color: #333;
  --heading-color: #2c3e50;
  --label-color: #555;
  --white-color: #fff;
  --border-radius: 4px;
  --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  --focus-shadow: 0 0 0 3px rgba(52, 152, 219, 0.4);
  --tooltip-bg: #333;
  --tooltip-text: #fff;
}

/* Basic Reset & Body */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--light-gray-color);
  color: var(--text-color);
  line-height: 1.6;
  margin: 0;
  display: flex;
  justify-content: center;
  min-height: 100vh;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: 900px;
  margin: 0 auto; /* Center container */
  background-color: var(--white-color);
  display: flex;
  flex-direction: column;
  min-height: 100vh; /* Ensure footer stays down */
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

/* Header */
header {
  background-color: var(--heading-color);
  color: var(--white-color);
  padding: 25px 30px;
  text-align: center;
}

header h1 {
  margin: 0 0 10px 0;
  font-size: 2rem;
  font-weight: 600;
}

header p {
  margin: 0;
  color: #bdc3c7;
  font-size: 1rem;
}

/* Main Content Area */
main {
  padding: 30px;
  flex-grow: 1; /* Allow main content to fill space */
  display: flex;
  flex-direction: column;
  gap: 30px;
}

/* Footer */
footer {
  background-color: #ecf0f1;
  color: var(--dark-gray-color);
  text-align: center;
  padding: 15px 30px;
  font-size: 0.9em;
  margin-top: auto; /* Push footer to bottom */
  border-top: 1px solid var(--medium-gray-color);
}

/* Input & Output Sections */
.input-section,
.output-section {
  padding: 25px;
  border: 1px solid var(--medium-gray-color);
  border-radius: var(--border-radius);
  background-color: var(--white-color);
  box-shadow: var(--box-shadow);
}

.input-section h2,
.output-section h2 {
  margin-top: 0;
  color: var(--heading-color);
  border-bottom: 1px solid #eee;
  padding-bottom: 10px;
  margin-bottom: 25px;
  font-size: 1.5rem;
  font-weight: 600;
}

/* Form Styling */
#newsletter-form {
  display: flex;
  flex-direction: column;
  gap: 20px; /* Spacing between form groups */
}

.form-group {
  margin-bottom: 0; /* Use gap in form instead */
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: bold;
  color: var(--label-color);
  position: relative; /* For tooltip positioning */
}

.form-group input[type='text'],
.form-group input[type='password'],
.form-group input[type='number'],
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px;
  border: 1px solid #ccc;
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input[type='text']:focus,
.form-group input[type='password']:focus,
.form-group input[type='number']:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: var(--focus-shadow);
}

/* Style for required fields */
.form-group label .required {
  color: var(--error-color);
  font-weight: bold;
  margin-left: 2px;
}

/* Input Validation Feedback (Example using :invalid pseudo-class) */
.form-group input:required:invalid,
.form-group textarea:required:invalid,
.form-group select:required:invalid {
  border-color: var(--error-color);
}
/* Add a class for more control via JS if needed */
.form-group input.invalid,
.form-group textarea.invalid,
.form-group select.invalid {
  border-color: var(--error-color);
  box-shadow: 0 0 0 1px var(--error-color);
}

.form-group textarea {
  min-height: 100px;
  resize: vertical;
}

/* API Key Warning Section */
.api-key-warning {
  background-color: var(--warning-bg-color);
  border: 1px solid var(--warning-border-color);
  padding: 15px;
  border-radius: var(--border-radius);
}
.api-key-warning label {
  color: var(--warning-color);
}
.api-key-warning .security-note {
  font-size: 0.85em;
  color: var(--warning-color);
  margin-top: 10px;
  line-height: 1.4;
}
.api-key-warning .security-note strong {
  color: #66512c; /* Darker warning color */
}

/* Optional Fields Fieldset */
fieldset.optional-fields {
  border: 1px solid var(--medium-gray-color);
  padding: 15px 20px 20px 20px;
  border-radius: var(--border-radius);
  margin-top: 10px;
}

fieldset.optional-fields legend {
  font-weight: bold;
  color: var(--label-color);
  padding: 0 10px;
  font-size: 1.1em;
}

/* Checkbox Group */
.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 10px;
}

.checkbox-group label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-weight: normal;
  color: var(--text-color);
  cursor: pointer;
}

.checkbox-group input[type='checkbox'] {
  width: auto;
  margin-right: 5px;
  accent-color: var(--primary-color); /* Modern way to style checkbox color */
}

/* Tooltip Styles */
.tooltip {
  display: inline-block;
  margin-left: 5px;
  cursor: help;
  color: var(--dark-gray-color);
  font-weight: normal;
  font-size: 0.9em;
  border: 1px solid var(--dark-gray-color);
  border-radius: 50%;
  width: 18px;
  height: 18px;
  line-height: 16px;
  text-align: center;
  position: relative;
  vertical-align: middle;
}

.tooltip::after {
  content: attr(title);
  position: absolute;
  bottom: 130%; /* Position above the icon */
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--tooltip-bg);
  color: var(--tooltip-text);
  padding: 8px 12px;
  border-radius: var(--border-radius);
  font-size: 0.85em;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  z-index: 10;
  pointer-events: none; /* Prevent tooltip from blocking hover on icon */
}

.tooltip:hover::after,
.tooltip:focus::after {
  opacity: 1;
  visibility: visible;
}

/* Controls (Buttons Container) */
.controls {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap; /* Allow buttons to wrap on smaller screens */
  gap: 10px;
  align-items: center; /* Align items vertically */
}

/* Button Styles */
button {
  padding: 12px 25px;
  color: var(--white-color);
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  transition: background-color 0.3s ease, opacity 0.3s ease,
    box-shadow 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  line-height: 1; /* Prevent extra height */
  text-decoration: none; /* For potential <a> styled as buttons */
}

button:focus,
button:focus-visible {
  outline: none;
  box-shadow: var(--focus-shadow);
}

/* Primary Button (Generate) */
button#generate-button {
  background-color: var(--primary-color);
}

button#generate-button:hover:not(:disabled) {
  background-color: var(--primary-hover-color);
}

button#generate-button:disabled {
  background-color: var(--dark-gray-color);
  cursor: not-allowed;
  opacity: 0.7;
}

/* Secondary Buttons (Clear, Presets, Copy) */
button#clear-button,
button#save-preset-button,
button#load-preset-button,
button#copy-button {
  background-color: var(--secondary-color);
}

button#clear-button:hover,
button#save-preset-button:hover,
button#load-preset-button:hover,
button#copy-button:hover {
  background-color: var(--secondary-hover-color);
}

/* Specific style for copy success feedback (added via JS) */
button#copy-button.copied {
  background-color: var(--accent-color);
}

/* Output Area Styles */
#output-area {
  background-color: #f9f9f9;
  padding: 20px;
  border: 1px dashed #ccc;
  border-radius: var(--border-radius);
  min-height: 150px;
  word-wrap: break-word; /* Break long words */
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  margin-top: 10px; /* Space below heading */
  margin-bottom: 20px; /* Space above copy button */
  color: var(--text-color);
}

/* Styles for content generated by JS formatOutput */
#output-area h3,
#output-area h4 {
  color: var(--heading-color);
  margin-top: 1.5em;
  margin-bottom: 0.5em;
  font-weight: 600;
  border-bottom: 1px solid #eee;
  padding-bottom: 5px;
}
#output-area h3 {
  font-size: 1.2rem;
}
#output-area h4 {
  font-size: 1.1rem;
}

#output-area p:first-child,
#output-area h3:first-child,
#output-area h4:first-child {
  margin-top: 0;
}

#output-area strong {
  font-weight: bold;
}
#output-area em {
  font-style: italic;
}
#output-area a {
  color: var(--primary-color);
  text-decoration: underline;
}
#output-area a:hover {
  color: var(--primary-hover-color);
}
#output-area br {
  /* Ensure <br> tags create appropriate spacing */
  content: '';
  display: block;
  margin-bottom: 0.5em; /* Adjust spacing as needed */
}

#output-area hr {
  border: none;
  border-top: 1px dashed var(--medium-gray-color);
  margin: 25px 0;
}

/* Feedback Styles */
#loading-indicator {
  /* display: none; is handled by JS */
  margin-left: 15px; /* Space from buttons */
  font-style: italic;
  color: var(--dark-gray-color);
  display: inline-flex; /* Use flex for alignment */
  align-items: center;
  gap: 8px;
}

/* Simple Spinner Animation */
#loading-indicator::before {
  content: '';
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--dark-gray-color);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Error/Warning Message Area */
#error-message {
  /* display: none; is handled by JS */
  margin: 15px 0 0 0; /* Position below controls */
  padding: 12px 15px;
  border-radius: var(--border-radius);
  border: 1px solid;
  font-weight: 500;
  width: 100%; /* Take full width in form */
}

#error-message.error {
  color: var(--error-color);
  background-color: var(--error-bg-color);
  border-color: var(--error-color);
}

#error-message.warning {
  color: var(--warning-color);
  background-color: var(--warning-bg-color);
  border-color: var(--warning-border-color);
}

/* Promotion Suggestions Styles */
#suggestions-container {
  /* display: none; is handled by JS */
  margin-top: 30px;
  padding: 20px;
  background-color: #eafaf1; /* Light green background */
  border: 1px solid #abebc6;
  border-radius: var(--border-radius);
}

#suggestions-container h3 {
  margin-top: 0;
  color: #1e8449; /* Darker green heading */
  font-size: 1.3rem;
  border-bottom: 1px solid #a3e4d7;
  padding-bottom: 8px;
  margin-bottom: 20px;
  font-weight: 600;
}

.suggestion {
  margin-bottom: 15px;
  padding: 15px;
  background-color: #fdfefe;
  border-left: 4px solid var(--accent-color);
  border-radius: var(--border-radius);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}

.suggestion span {
  flex-grow: 1;
  font-size: 0.95rem;
  color: #239b56; /* Medium green text */
  line-height: 1.5;
}

.suggestion strong {
  color: #1e8449;
  display: block;
  margin-bottom: 5px;
  font-size: 1em; /* Match surrounding text size */
}

/* Suggestion Copy Buttons */
button.copy-suggestion {
  background-color: var(--secondary-color);
  color: var(--white-color);
  padding: 5px 10px;
  font-size: 0.85em;
  border-radius: var(--border-radius);
  margin-left: 10px;
  flex-shrink: 0; /* Prevent shrinking */
  /* display: none; is handled by JS */
}

button.copy-suggestion:hover {
  background-color: var(--secondary-hover-color);
}

button.copy-suggestion.copied {
  background-color: var(--accent-color);
}

/* Basic responsiveness */
@media (max-width: 768px) {
  header,
  main,
  footer {
    padding-left: 20px;
    padding-right: 20px;
  }

  .input-section,
  .output-section {
    padding: 20px;
  }

  header h1 {
    font-size: 1.8rem;
  }

  .input-section h2,
  .output-section h2 {
    font-size: 1.4rem;
  }

  .controls {
    /* Allow slightly more space before wrapping */
    justify-content: flex-start;
  }
}

@media (max-width: 600px) {
  /* Stack form controls earlier */
  .controls.form-controls {
    flex-direction: column;
    align-items: stretch; /* Make buttons full width */
  }

  .controls.form-controls button {
    width: 100%;
  }

  #loading-indicator {
    margin-left: 0; /* Reset margin when stacked */
    margin-top: 10px;
    justify-content: center; /* Center spinner and text */
  }
}

@media (max-width: 480px) {
  body {
    font-size: 15px; /* Slightly smaller base font */
  }

  header,
  main,
  footer {
    padding-left: 15px;
    padding-right: 15px;
  }

  header h1 {
    font-size: 1.6rem;
  }

  .input-section,
  .output-section {
    padding: 15px;
  }

  .input-section h2,
  .output-section h2 {
    font-size: 1.3rem;
    margin-bottom: 20px;
  }

  .form-group input[type='text'],
  .form-group input[type='password'],
  .form-group input[type='number'],
  .form-group textarea,
  .form-group select,
  button {
    font-size: 0.95rem;
    padding: 10px;
  }

  button {
    padding: 10px 20px;
  }

  /* Ensure all controls stack */
  .controls {
    flex-direction: column;
    align-items: stretch; /* Make buttons full width */
  }

  .controls button {
    width: 100%;
  }

  .suggestion {
    flex-direction: column;
    align-items: flex-start;
  }

  button.copy-suggestion {
    margin-left: 0;
    margin-top: 8px;
    align-self: flex-start; /* Align button left */
  }
}