/* ===================================
   Wild West Forum - Main Stylesheet
   Accessible, Rustic Design
   =================================== */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Rye&family=Crimson+Text:wght@400;600;700&display=swap');

/* ===================================
   CSS Reset & Box Sizing
   =================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ===================================
   CSS Custom Properties (Design System)
   =================================== */
:root {
  /* Color Palette */
  --color-dark-brown: #7B4B3A;
  --color-tan: #C19A6B;
  --color-light-tan: #D2B48C;
  --color-darker-brown: #8B5A2B;
  --color-wheat: #F5DEB3;

  /* Semantic Color Usage */
  --color-primary: var(--color-tan);
  --color-primary-dark: var(--color-darker-brown);
  --color-text: var(--color-dark-brown);
  --color-background: var(--color-light-tan);
  --color-card-bg: var(--color-wheat);
  --color-input-bg: var(--color-wheat);
  --color-border: var(--color-darker-brown);

  /* Typography */
  --font-display: 'Rye', serif;
  --font-body: 'Crimson Text', serif;
  --font-size-base: 16px;
  --font-size-h3: 1.25rem;
  --font-size-h2: 1.5rem;
  --font-size-h1: 2rem;
  --line-height: 1.6;

  /* Spacing (8px grid system) */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;

  /* Border & Shadow */
  --border-radius: 4px;
  --border-width: 2px;
  --box-shadow: 0 2px 8px rgba(123, 75, 58, 0.15);
  --box-shadow-hover: 0 4px 12px rgba(123, 75, 58, 0.25);

  /* Touch Target Size (WCAG) */
  --min-touch-target: 44px;
}

/* ===================================
   Base Styles
   =================================== */
html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-background);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  width: 100%;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.2;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

h1 {
  font-size: var(--font-size-h1);
}

h2 {
  font-size: var(--font-size-h2);
}

h3 {
  font-size: var(--font-size-h3);
}

p {
  margin-bottom: var(--space-sm);
}

a {
  color: var(--color-darker-brown);
  text-decoration: underline;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-primary);
}

a:focus {
  outline: 2px solid var(--color-darker-brown);
  outline-offset: 2px;
}

/* ===================================
   Layout
   =================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-sm);
  width: 100%;
}

main {
  flex: 1;
  padding: var(--space-lg) 0;
}

/* ===================================
   Header & Navigation
   =================================== */
.site-header {
  background-color: var(--color-primary);
  border-bottom: var(--border-width) solid var(--color-border);
  box-shadow: var(--box-shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.site-title {
  font-family: var(--font-display);
  font-size: var(--font-size-h1);
  margin: 0;
  color: var(--color-text);
}

.site-title a {
  color: var(--color-text);
  text-decoration: none;
}

.site-title a:hover {
  color: var(--color-darker-brown);
}

.site-title-prefix {
  font-size: 0.5em;
  vertical-align: top;
  font-family: var(--font-body);
  font-weight: 400;
  opacity: 0.8;
  margin-right: 4px;
}

.nav-menu {
  display: flex;
  gap: var(--space-sm);
  list-style: none;
  align-items: center;
  flex-wrap: wrap;
}

.nav-menu a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 600;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius);
  transition: background-color 0.2s ease, color 0.2s ease;
  min-height: var(--min-touch-target);
  display: flex;
  align-items: center;
}

.nav-menu a:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-wheat);
}

.nav-menu a:focus {
  outline: 2px solid var(--color-darker-brown);
  outline-offset: 2px;
}

.user-info {
  font-weight: 600;
  color: var(--color-darker-brown);
  padding: var(--space-xs) var(--space-sm);
}

/* ===================================
   Footer
   =================================== */
.site-footer {
  background-color: var(--color-primary);
  border-top: var(--border-width) solid var(--color-border);
  padding: var(--space-md) 0;
  text-align: center;
  margin-top: auto;
}

.site-footer p {
  margin: 0;
  color: var(--color-text);
}

/* ===================================
   Cards & Containers
   =================================== */
.card {
  background-color: var(--color-card-bg);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-md);
  box-shadow: var(--box-shadow);
  margin-bottom: var(--space-md);
}

.card:hover {
  box-shadow: var(--box-shadow-hover);
}

.card-header {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.card-title {
  margin: 0;
  font-size: var(--font-size-h2);
}

/* ===================================
   Forms
   =================================== */
.form {
  width: 100%;
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
  font-size: 1rem;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text);
  background-color: var(--color-input-bg);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  min-height: var(--min-touch-target);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary-dark);
  box-shadow: 0 0 0 3px rgba(139, 90, 43, 0.2);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
  line-height: var(--line-height);
}

/* ===================================
   Buttons
   =================================== */
.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  color: var(--color-text);
  background-color: var(--color-primary);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.1s ease;
  min-height: var(--min-touch-target);
  min-width: var(--min-touch-target);
}

.btn:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-wheat);
  transform: translateY(-1px);
  box-shadow: var(--box-shadow-hover);
}

.btn:active {
  transform: translateY(0);
}

.btn:focus {
  outline: 2px solid var(--color-darker-brown);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--color-darker-brown);
  color: var(--color-wheat);
}

.btn-primary:hover {
  background-color: var(--color-dark-brown);
  color: var(--color-wheat);
}

.btn-secondary {
  background-color: var(--color-wheat);
  color: var(--color-text);
}

.btn-block {
  width: 100%;
  display: block;
}

/* ===================================
   Comments
   =================================== */
.comments-container {
  max-width: 800px;
  margin: 0 auto;
}

.comment-card {
  background-color: var(--color-card-bg);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  box-shadow: var(--box-shadow);
  transition: box-shadow 0.2s ease;
}

.comment-card:hover {
  box-shadow: var(--box-shadow-hover);
}

.comment-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--color-tan);
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.comment-author {
  font-weight: 700;
  color: var(--color-darker-brown);
  font-size: 1.1rem;
}

.comment-timestamp {
  font-size: 0.875rem;
  color: var(--color-dark-brown);
  opacity: 0.8;
}

.comment-text {
  color: var(--color-text);
  line-height: var(--line-height);
  word-wrap: break-word;
  margin: 0;
}

.comments-empty {
  text-align: center;
  padding: var(--space-xl);
  color: var(--color-darker-brown);
  font-style: italic;
}

/* ===================================
   Hero Section (Home Page)
   =================================== */
.hero {
  text-align: center;
  padding: var(--space-xl) 0;
  max-width: 100%;
  overflow-wrap: break-word;
  word-wrap: break-word;
}

.hero-title {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
  color: var(--color-darker-brown);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
  max-width: 100%;
  overflow-wrap: break-word;
  word-wrap: break-word;
  hyphens: auto;
}

.hero-title .site-title-prefix {
  font-size: 0.4em;
  vertical-align: top;
  margin-right: 6px;
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: var(--space-lg);
  color: var(--color-text);
  line-height: 1.4;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* ===================================
   Error Messages
   =================================== */
.error-message {
  background-color: #f8d7da;
  border: var(--border-width) solid #dc3545;
  color: #721c24;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-md);
  font-weight: 600;
}

.success-message {
  background-color: #d4edda;
  border: var(--border-width) solid #28a745;
  color: #155724;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-md);
  font-weight: 600;
}

/* Form validation errors */
.form-error {
  display: none;
  color: #dc3545;
  font-size: 0.875rem;
  margin-top: 4px;
  font-weight: 600;
}

.form-input.error {
  border-color: #dc3545;
  border-width: 2px;
}

.form-input.error:focus {
  outline-color: #dc3545;
  box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.2);
}

.form-help {
  display: block;
  color: #6c757d;
  font-size: 0.875rem;
  margin-top: 4px;
}

/* ===================================
   Utility Classes
   =================================== */
.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }

/* Skip to main content link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-darker-brown);
  color: var(--color-wheat);
  padding: var(--space-xs) var(--space-sm);
  text-decoration: none;
  z-index: 200;
}

.skip-link:focus {
  top: 0;
}

/* ===================================
   Page-Specific Styles
   =================================== */
.auth-container {
  max-width: 500px;
  margin: var(--space-xl) auto;
}

.form-footer {
  text-align: center;
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.page-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.page-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* ===================================
   Responsive Design
   =================================== */

/* Tablet (768px and below) */
@media (max-width: 768px) {
  :root {
    --font-size-h1: 1.75rem;
    --font-size-h2: 1.35rem;
    --font-size-h3: 1.15rem;
  }

  .hero-title {
    font-size: 2rem;
  }

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

  .nav-menu {
    width: 100%;
  }

  .page-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .card {
    padding: var(--space-sm);
  }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
  :root {
    --space-lg: 24px;
    --space-xl: 32px;
  }

  .hero-title {
    font-size: 1.5rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .nav-menu {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-menu a {
    width: 100%;
  }

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

/* ===================================
   Print Styles
   =================================== */
@media print {
  .site-header,
  .site-footer,
  .nav-menu,
  .btn,
  .page-actions {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .card,
  .comment-card {
    border: 1px solid black;
    box-shadow: none;
    page-break-inside: avoid;
  }
}

/* ===================================
   High Contrast Mode Support
   =================================== */
@media (prefers-contrast: high) {
  :root {
    --border-width: 3px;
  }

  .btn,
  .form-input,
  .form-textarea,
  .card {
    border-width: 3px;
  }
}

/* ===================================
   Reduced Motion Support
   =================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===================================
   REFINED THEME UPDATES - "Less Wild"
   =================================== */

/* Profile Page Styles */
.profile-container {
  max-width: 900px;
  margin: 0 auto;
}

.profile-header {
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
  margin-bottom: var(--space-xl);
}

.profile-avatar-section {
  flex-shrink: 0;
}

.profile-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 3px solid var(--color-border);
  box-shadow: var(--box-shadow);
  object-fit: cover;
}

.profile-avatar-large {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  border: 3px solid var(--color-border);
  box-shadow: var(--box-shadow);
  object-fit: cover;
}

.profile-info-section {
  flex: 1;
  min-width: 0;
}

.profile-name {
  margin-bottom: var(--space-xs);
  font-size: 2rem;
  color: var(--color-darker-brown);
}

.profile-username {
  color: var(--color-dark-brown);
  opacity: 0.8;
  font-size: 1.1rem;
  margin-bottom: var(--space-xs);
}

.profile-join-date {
  color: var(--color-text);
  font-size: 0.9rem;
  opacity: 0.8;
  margin-bottom: var(--space-sm);
}

.profile-bio {
  color: var(--color-text);
  line-height: var(--line-height);
  margin-bottom: var(--space-md);
  font-size: 1.05rem;
}

.profile-actions {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.profile-comments {
  margin-top: var(--space-xl);
}

.profile-comments h2 {
  margin-bottom: var(--space-md);
  color: var(--color-darker-brown);
}

/* Profile Edit Page */
.profile-edit-container {
  max-width: 700px;
  margin: 0 auto;
}

.profile-edit-container h1 {
  margin-bottom: var(--space-lg);
  color: var(--color-darker-brown);
}

.profile-picture-section {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.current-picture {
  flex-shrink: 0;
}

.picture-controls {
  flex: 1;
}

.form-help {
  font-size: 0.875rem;
  color: var(--color-dark-brown);
  opacity: 0.8;
  margin-top: var(--space-xs);
  margin-bottom: 0;
}

.form-actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: flex-start;
  flex-wrap: wrap;
}

/* Comment Enhancements */
.comment-author {
  text-decoration: none;
  font-weight: 700;
  color: var(--color-darker-brown);
  font-size: 1.1rem;
  transition: color 0.2s ease;
}

.comment-author:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.comment-meta {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.comment-edited-badge {
  font-size: 0.75rem;
  color: var(--color-text);
  opacity: 0.7;
  font-style: italic;
  background-color: var(--color-tan);
  padding: 2px 8px;
  border-radius: 3px;
}

.comment-body {
  margin-bottom: var(--space-sm);
}

.comment-read-more {
  background: none;
  border: none;
  color: var(--color-darker-brown);
  text-decoration: underline;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.9rem;
  padding: 0;
  margin-top: var(--space-xs);
  transition: color 0.2s ease;
}

.comment-read-more:hover {
  color: var(--color-primary-dark);
}

.comment-actions {
  display: flex;
  gap: var(--space-sm);
  padding-top: var(--space-xs);
  margin-top: var(--space-sm);
}

.btn-comment-action {
  padding: 6px 12px;
  font-size: 0.875rem;
  font-family: var(--font-body);
  font-weight: 600;
  background-color: transparent;
  border: none;
  color: var(--color-darker-brown);
  cursor: pointer;
  transition: all 0.2s ease;
  border-radius: var(--border-radius);
}

.btn-comment-action:hover {
  background-color: var(--color-tan);
  color: var(--color-darker-brown);
}

.btn-edit {
  color: var(--color-darker-brown);
}

.btn-delete {
  color: #c62828;
}

.btn-delete:hover {
  background-color: #ffebee;
  color: #b71c1c;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.875rem;
  min-height: auto;
}

.edit-textarea {
  margin-bottom: var(--space-sm);
}

.edit-actions {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

/* Auth Pages Refinement */
.auth-subtitle {
  text-align: center;
  color: var(--color-text);
  opacity: 0.9;
  margin-bottom: var(--space-md);
  font-size: 1.05rem;
}

.auth-links {
  text-align: center;
  margin-top: var(--space-md);
}

.auth-card {
  padding: var(--space-lg);
}

.btn-full {
  width: 100%;
}

.user-profile-link {
  color: var(--color-darker-brown);
  text-decoration: none;
  font-weight: 600;
}

.user-profile-link:hover {
  color: var(--color-wheat);
  text-decoration: underline;
}

/* Refined Theme Updates */
:root {
  /* Updated spacing for more refinement */
  --border-radius: 8px;
  --box-shadow: 0 2px 12px rgba(123, 75, 58, 0.12);
  --box-shadow-hover: 0 6px 20px rgba(123, 75, 58, 0.2);
}

.card {
  border-radius: 8px;
  padding: var(--space-lg);
}

.btn {
  border-radius: 8px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.btn-primary {
  box-shadow: 0 2px 8px rgba(139, 90, 43, 0.2);
}

.btn-primary:hover {
  box-shadow: 0 4px 12px rgba(139, 90, 43, 0.3);
}

.comment-card {
  border-radius: 8px;
  transition: all 0.3s ease;
}

/* Responsive updates for new components */
@media (max-width: 768px) {
  .profile-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .profile-info-section {
    text-align: center;
  }

  .profile-actions {
    justify-content: center;
  }

  .profile-picture-section {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .profile-avatar {
    width: 90px;
    height: 90px;
  }

  .profile-avatar-large {
    width: 110px;
    height: 110px;
  }

  .profile-name {
    font-size: 1.5rem;
  }

  .form-actions {
    flex-direction: column;
  }

  .form-actions .btn {
    width: 100%;
  }
}

/* ===================================
   Email Verification Page Styles
   =================================== */
.verification-section {
  background: linear-gradient(135deg, #f5f5f0 0%, #faf8f3 100%);
  border: var(--border-width) solid var(--color-tan);
  border-radius: 12px;
  padding: var(--space-lg);
  margin: var(--space-md) 0;
}

.verification-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.verification-header h2 {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
  color: var(--color-darker-brown);
}

.verification-intro {
  color: var(--color-text);
  margin-bottom: var(--space-md);
  font-size: 1.05rem;
}

.email-badge {
  display: inline-block;
  background-color: var(--color-darker-brown);
  color: var(--color-wheat);
  padding: var(--space-xs) var(--space-md);
  border-radius: 6px;
  font-size: 1rem;
  box-shadow: 0 2px 8px rgba(123, 75, 58, 0.2);
}

.verification-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.verification-option {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  background-color: white;
  padding: var(--space-md);
  border-radius: 8px;
  border: 2px solid var(--color-tan);
  transition: all 0.3s ease;
}

.verification-option:hover {
  border-color: var(--color-darker-brown);
  box-shadow: 0 4px 12px rgba(123, 75, 58, 0.15);
  transform: translateY(-2px);
}

.option-number {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background-color: var(--color-tan);
  color: var(--color-darker-brown);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  font-family: var(--font-display);
}

.option-content h3 {
  font-size: 1.1rem;
  margin-bottom: 4px;
  color: var(--color-darker-brown);
}

.option-content p {
  margin: 0;
  color: var(--color-text);
  font-size: 0.95rem;
  opacity: 0.9;
}

.verification-divider {
  text-align: center;
  font-weight: 700;
  color: var(--color-tan);
  font-family: var(--font-display);
  font-size: 1rem;
  padding: var(--space-xs) 0;
}

.verification-action {
  text-align: center;
}

.btn-lg {
  padding: var(--space-md) var(--space-lg);
  font-size: 1.1rem;
}

.help-text {
  font-size: 0.9rem;
  color: var(--color-dark-brown);
  opacity: 0.8;
  margin: 0;
}

@media (max-width: 480px) {
  .verification-section {
    padding: var(--space-md);
  }

  .verification-option {
    flex-direction: column;
    text-align: center;
    gap: var(--space-sm);
  }

  .email-badge {
    word-break: break-all;
  }
}

/* ===================================
   Letter-based Avatar Styles
   =================================== */
.profile-avatar-letter {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: bold;
  color: white;
  text-transform: uppercase;
  border-radius: 50%;
  background-color: var(--color-tan);
  border: 3px solid var(--color-darker-brown);
}

.profile-avatar-large.profile-avatar-letter {
  font-size: 4rem;
}

/* Generate background colors based on data-username attribute */
/* This will be enhanced by JavaScript for consistent colors */