:root {
  --primary-color: #5458F7;
  --primary-light: #6A6EFF;
  --primary-dark: #3b3fd8;
  --secondary-color: #f8f9fa;
  --border-color: #e1e4e8;
  --text-color: #222;
  --text-light: #586069;
  --error-color: #E63946;
  --success-color: #4CAF50;
  --accent-color: #FF6B6B;
  --background-color: #f7f8fa;
  --card-background: #ffffff;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
  --transition: all 0.2s ease;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
}

/* Reset & Basics */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 15px;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

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

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1rem;
}

h1 {
  font-size: 1.75rem;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.25rem;
}

/* Buttons */
button, .btn-primary, .btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

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

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: #f0f1f2;
}

/* Header */
header {
  background-color: var(--card-background);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

header h1 {
  color: var(--primary-color);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0;
}

/* Notifications */
#notifications-wrapper {
  position: relative;
}

#notifications-toggle {
  background: none;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

#notification-badge {
  position: absolute;
  top: 0;
  right: 0;
  background-color: var(--accent-color);
  color: white;
  font-size: 0.625rem;
  font-weight: 700;
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.notifications-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  width: 320px;
  max-height: 400px;
  overflow-y: auto;
  background-color: var(--card-background);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 100;
  display: none;
  padding: 1rem;
}

.notification {
  padding: 0.75rem;
  border-radius: var(--radius-md);
  margin-bottom: 0.5rem;
  transition: var(--transition);
}

.notification:hover {
  background-color: var(--secondary-color);
}

.notification.unread {
  background-color: rgba(84, 88, 247, 0.05);
}

/* Navigation */
nav {
  background-color: var(--card-background);
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--spacing-xl);
}

nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 50px;
}

.nav-links, .user-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.nav-links a, .user-nav a {
  color: var(--text-color);
  text-decoration: none;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-md);
  transition: var(--transition);
  font-weight: 500;
}

.nav-links a:hover, .user-nav a:hover {
  background-color: var(--secondary-color);
}

.nav-links a.active {
  color: var(--primary-color);
  font-weight: 600;
}

/* Posts */
.feed {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.post-card {
  background: var(--card-background);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition);
}

.post-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.post-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
}

.post-user {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.post-avatar, .profile-avatar, .comment-avatar, .user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary-color);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 1.25rem;
}

.profile-avatar {
  width: 100px;
  height: 100px;
  font-size: 2.5rem;
}

.post-meta {
  display: flex;
  flex-direction: column;
}

.post-author {
  font-weight: 600;
  color: var(--text-color);
  text-decoration: none;
  display: flex;
  align-items: center;
}

.post-time {
  font-size: 0.75rem;
  color: var(--text-light);
}

.post-content {
  padding: var(--spacing-md);
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.95rem;
  line-height: 1.5;
}

.post-image {
  position: relative;
}

.post-image img {
  width: 100%;
  max-height: 500px;
  object-fit: cover;
}

.image-description {
  padding: 0.5rem 1rem;
  background: rgba(0, 0, 0, 0.04);
  font-size: 0.875rem;
  color: var(--text-light);
}

.post-footer {
  padding: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

.post-stats {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
}

.vote-buttons {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.vote-btn {
  background: none;
  border: none;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.vote-btn:hover {
  background-color: var(--secondary-color);
}

.vote-btn.active {
  color: var(--primary-color);
  font-weight: 500;
}

.comment-btn, .share-btn {
  background: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.875rem;
}

.comment-btn:hover, .share-btn:hover {
  color: var(--primary-color);
}

.post-actions-menu {
  position: relative;
}

.post-menu-trigger {
  background: none;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: var(--transition);
}

.post-menu-trigger:hover {
  background-color: var(--secondary-color);
}

.post-menu-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background-color: var(--card-background);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  z-index: 10;
  display: none;
  min-width: 160px;
  padding: 0.5rem 0;
}

.post-menu-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  transition: var(--transition);
  font-size: 0.875rem;
  color: var(--text-color);
}

.post-menu-item:hover {
  background-color: var(--secondary-color);
}

/* Post hashtags */
.post-hashtags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: var(--spacing-sm);
}

.hashtag {
  color: var(--primary-color);
  font-size: 0.875rem;
  transition: var(--transition);
}

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

.mention {
  color: var(--primary-color);
  font-weight: 500;
}

/* Comments */
.comments-section {
  background: var(--secondary-color);
  padding: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

.comments-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.comment {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  background-color: var(--card-background);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
}

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

.comment-meta {
  display: flex;
  flex-direction: column;
}

.comment-author {
  font-weight: 600;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
}

.comment-time {
  font-size: 0.75rem;
  color: var(--text-light);
}

.comment-content {
  font-size: 0.9375rem;
  line-height: 1.5;
}

.comment-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xs);
}

.reply-btn {
  background: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.875rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.reply-btn:hover {
  color: var(--primary-color);
}

.reply-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.reply-form textarea {
  width: 100%;
  height: 60px;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  resize: vertical;
  font-family: inherit;
  font-size: 0.875rem;
}

.comment-replies {
  margin-left: 2rem;
  margin-top: var(--spacing-sm);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.comment.reply {
  background-color: var(--secondary-color);
}

.comment-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.comment-form textarea {
  width: 100%;
  height: 80px;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  resize: vertical;
  font-family: inherit;
  font-size: 0.9375rem;
}

.comment-form button {
  align-self: flex-end;
}

/* Admin Badge */
.admin-badge {
  background-color: var(--primary-color);
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.6875rem;
  font-weight: 600;
  margin-left: 0.5rem;
}

/* Post Form */
.post-form-container {
  background: var(--card-background);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}

.post-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.post-form textarea {
  width: 100%;
  min-height: 120px;
  padding: var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  resize: vertical;
  font-family: inherit;
  font-size: 0.9375rem;
  transition: var(--transition);
}

.post-form textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(84, 88, 247, 0.1);
}

.post-form-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.image-upload input[type="file"] {
  display: none;
}

.image-upload-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.875rem;
}

.image-upload-label:hover {
  background: var(--secondary-color);
}

.image-preview-container {
  margin-top: var(--spacing-md);
}

.image-preview-container img {
  max-width: 100%;
  max-height: 300px;
  border-radius: var(--radius-md);
  margin-bottom: 0.5rem;
}

.image-description {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
}

/* Messages */
.message {
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  border-radius: var(--radius-md);
  background-color: var(--secondary-color);
  border-left: 4px solid var(--primary-color);
  font-size: 0.9375rem;
}

/* Auth Forms */
.auth-box {
  background: var(--card-background);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  max-width: 400px;
  margin: 0 auto;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
}

.form-group input {
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  transition: var(--transition);
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(84, 88, 247, 0.1);
}

.auth-links {
  margin-top: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  text-align: center;
  font-size: 0.875rem;
}

/* Profile Page */
.profile-header {
  display: flex;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: var(--card-background);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.profile-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.profile-top {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-xs);
}

.profile-top h2 {
  margin-bottom: 0;
}

.profile-stats {
  display: flex;
  list-style-type: none;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.profile-bio {
  color: var(--text-color);
  line-height: 1.5;
  margin-bottom: var(--spacing-md);
}

.profile-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.profile-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--spacing-lg);
}

.profile-tabs a {
  padding: var(--spacing-sm) var(--spacing-lg);
  color: var(--text-light);
  font-weight: 500;
  position: relative;
}

.profile-tabs a.active {
  color: var(--primary-color);
}

.profile-tabs a.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary-color);
}

/* Search Page */
.search-form {
  margin-bottom: var(--spacing-lg);
}

.search-input-container {
  display: flex;
  gap: var(--spacing-sm);
}

.search-input-container input {
  flex: 1;
  padding: 0.75rem var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  transition: var(--transition);
}

.search-input-container input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(84, 88, 247, 0.1);
}

.search-results {
  background: var(--card-background);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.search-results h3 {
  margin-bottom: var(--spacing-md);
}

.search-results-list {
  list-style-type: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.search-result-item:hover {
  background-color: var(--secondary-color);
}

.search-result-item a {
  font-weight: 500;
}

/* Footer */
footer {
  background: var(--card-background);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-xl) 0;
  margin-top: calc(var(--spacing-xl) * 2);
  text-align: center;
  color: var(--text-light);
}

/* Toast notification */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 10px 20px;
  border-radius: 4px;
  font-size: 14px;
  opacity: 0;
  transition: transform 0.3s, opacity 0.3s;
  z-index: 9999;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.3s ease forwards;
}

/* Fix for post-menu-dropdown */
.post-actions-menu:hover .post-menu-dropdown {
  display: block;
  animation: fadeIn 0.2s ease forwards;
}

/* Responsive Design */
@media (max-width: 768px) {
  body {
    font-size: 14px;
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  header .container {
    height: 56px;
  }
  
  .profile-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-md);
  }
  
  .profile-avatar {
    width: 80px;
    height: 80px;
  }
  
  .profile-stats {
    justify-content: center;
  }
  
  .post-form-actions {
    flex-direction: column;
    gap: 0.75rem;
    align-items: stretch;
  }
  
  .post-stats {
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }
  
  .nav-links, .user-nav {
    gap: var(--spacing-sm);
  }
  
  .nav-links a, .user-nav a {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
  }
  
  .notifications-dropdown {
    width: 280px;
    right: -100px;
  }
}