* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background: #f5f7fa;
}

.page-home-unique {
  min-height: 100vh;
}

.page-forum-list-unique {
  min-height: 100vh;
}

.page-video-share-unique {
  min-height: 100vh;
}

.page-user-center-unique {
  min-height: 100vh;
}

.page-about-unique {
  min-height: 100vh;
}

.header-main-wrapper {
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo-brand-link {
  text-decoration: none;
}

.site-title-h1 {
  color: #fff;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 1px;
}

.nav-menu-primary {
  display: flex;
  gap: 35px;
  list-style: none;
}

.nav-item-link {
  color: #fff;
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  transition: all 0.3s ease;
  padding: 8px 16px;
  border-radius: 6px;
}

.nav-item-link:hover {
  background: rgba(255,255,255,0.15);
  transform: translateY(-2px);
}

.hero-banner-section {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 80px 20px;
  text-align: center;
  color: #fff;
}

.hero-content-wrapper {
  max-width: 900px;
  margin: 0 auto;
}

.hero-main-heading {
  font-size: 48px;
  margin-bottom: 20px;
  font-weight: 800;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.hero-description-text {
  font-size: 20px;
  margin-bottom: 30px;
  opacity: 0.95;
  line-height: 1.8;
}

.cta-button-primary {
  display: inline-block;
  padding: 15px 40px;
  background: #fff;
  color: #667eea;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 700;
  font-size: 18px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.cta-button-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.features-showcase-section {
  max-width: 1400px;
  margin: 60px auto;
  padding: 0 20px;
}

.section-title-heading {
  text-align: center;
  font-size: 38px;
  margin-bottom: 50px;
  color: #2d3748;
  font-weight: 700;
}

.features-grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
}

.feature-card-item {
  background: #fff;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.07);
  transition: all 0.3s ease;
  border: 1px solid #e2e8f0;
}

.feature-card-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.feature-icon-box {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 28px;
}

.feature-title-h3 {
  font-size: 22px;
  margin-bottom: 15px;
  color: #2d3748;
  font-weight: 600;
}

.feature-description-p {
  color: #718096;
  line-height: 1.7;
  font-size: 15px;
}

.content-showcase-section {
  background: #fff;
  padding: 60px 20px;
  margin: 60px 0;
}

.content-inner-wrapper {
  max-width: 1400px;
  margin: 0 auto;
}

.content-grid-layout {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 25px;
  margin-top: 40px;
}

.content-card-block {
  background: #f7fafc;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  transition: all 0.3s ease;
}

.content-card-block:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

.content-image-wrapper {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: #e2e8f0;
}

.content-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.content-card-block:hover .content-thumb-img {
  transform: scale(1.05);
}

.content-info-box {
  padding: 20px;
}

.content-title-h4 {
  font-size: 18px;
  margin-bottom: 10px;
  color: #2d3748;
  font-weight: 600;
}

.content-meta-info {
  color: #718096;
  font-size: 14px;
  margin-bottom: 12px;
}

.content-excerpt-p {
  color: #4a5568;
  font-size: 14px;
  line-height: 1.6;
}

.stats-counter-section {
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
  padding: 60px 20px;
  color: #fff;
}

.stats-grid-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  text-align: center;
}

.stat-item-block {
  padding: 20px;
}

.stat-number-display {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 10px;
  color: #fff;
}

.stat-label-text {
  font-size: 18px;
  opacity: 0.9;
}

.footer-main-section {
  background: #2d3748;
  color: #cbd5e0;
  padding: 50px 20px 30px;
}

.footer-content-wrapper {
  max-width: 1400px;
  margin: 0 auto;
}

.footer-grid-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-column-block {
  padding: 0 15px;
}

.footer-heading-h4 {
  color: #fff;
  font-size: 18px;
  margin-bottom: 20px;
  font-weight: 600;
}

.footer-links-list {
  list-style: none;
}

.footer-link-item {
  margin-bottom: 12px;
}

.footer-link-anchor {
  color: #cbd5e0;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-link-anchor:hover {
  color: #fff;
}

.footer-text-p {
  line-height: 1.8;
  color: #a0aec0;
}

.copyright-bar-section {
  border-top: 1px solid #4a5568;
  padding-top: 25px;
  text-align: center;
  color: #a0aec0;
  font-size: 14px;
}

.forum-categories-section {
  max-width: 1400px;
  margin: 40px auto;
  padding: 0 20px;
}

.category-list-wrapper {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.category-item-row {
  padding: 25px 30px;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  align-items: center;
  gap: 20px;
  transition: background 0.3s ease;
}

.category-item-row:hover {
  background: #f7fafc;
}

.category-icon-circle {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.category-info-wrapper {
  flex: 1;
}

.category-name-h3 {
  font-size: 20px;
  margin-bottom: 8px;
  color: #2d3748;
  font-weight: 600;
}

.category-desc-p {
  color: #718096;
  font-size: 14px;
}

.category-stats-box {
  display: flex;
  gap: 30px;
  color: #718096;
  font-size: 14px;
}

.video-upload-section {
  max-width: 900px;
  margin: 40px auto;
  padding: 0 20px;
}

.upload-form-container {
  background: #fff;
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.07);
}

.form-group-wrapper {
  margin-bottom: 25px;
}

.form-label-text {
  display: block;
  margin-bottom: 8px;
  color: #2d3748;
  font-weight: 600;
  font-size: 15px;
}

.form-input-field {
  width: 100%;
  padding: 12px 15px;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  font-size: 15px;
  transition: border-color 0.3s ease;
}

.form-input-field:focus {
  outline: none;
  border-color: #667eea;
}

.form-textarea-field {
  width: 100%;
  padding: 12px 15px;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  font-size: 15px;
  min-height: 120px;
  resize: vertical;
  font-family: inherit;
}

.form-textarea-field:focus {
  outline: none;
  border-color: #667eea;
}

.form-select-dropdown {
  width: 100%;
  padding: 12px 15px;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  font-size: 15px;
  background: #fff;
}

.submit-button-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  padding: 14px 40px;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.submit-button-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.user-profile-section {
  max-width: 1200px;
  margin: 40px auto;
  padding: 0 20px;
}

.profile-header-card {
  background: #fff;
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  margin-bottom: 30px;
  display: flex;
  align-items: center;
  gap: 30px;
}

.avatar-image-box {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid #667eea;
  flex-shrink: 0;
}

.avatar-img-element {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-info-details {
  flex: 1;
}

.username-heading-h2 {
  font-size: 32px;
  margin-bottom: 10px;
  color: #2d3748;
}

.user-bio-text {
  color: #718096;
  font-size: 16px;
  line-height: 1.6;
}

.tabs-navigation-bar {
  display: flex;
  gap: 20px;
  margin-bottom: 30px;
  border-bottom: 2px solid #e2e8f0;
}

.tab-button-item {
  padding: 15px 25px;
  background: none;
  border: none;
  font-size: 16px;
  font-weight: 600;
  color: #718096;
  cursor: pointer;
  position: relative;
  transition: color 0.3s ease;
}

.tab-button-item:hover {
  color: #667eea;
}

.tab-button-item.active-tab-state {
  color: #667eea;
}

.tab-button-item.active-tab-state::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: #667eea;
}

.about-content-section {
  max-width: 1000px;
  margin: 40px auto;
  padding: 0 20px;
}

.about-card-wrapper {
  background: #fff;
  padding: 50px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  line-height: 1.8;
}

.about-heading-h2 {
  font-size: 32px;
  margin-bottom: 25px;
  color: #2d3748;
}

.about-text-paragraph {
  color: #4a5568;
  margin-bottom: 20px;
  font-size: 16px;
}

.features-list-ul {
  list-style: none;
  margin: 30px 0;
}

.feature-list-item {
  padding: 15px 0;
  color: #4a5568;
  font-size: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.feature-list-item::before {
  content: '✓';
  width: 24px;
  height: 24px;
  background: #667eea;
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-weight: bold;
}

@media (max-width: 768px) {
  .header-inner-container {
    flex-direction: column;
    height: auto;
    padding: 15px 20px;
  }

  .nav-menu-primary {
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
  }

  .hero-main-heading {
    font-size: 32px;
  }

  .hero-description-text {
    font-size: 16px;
  }

  .features-grid-container {
    grid-template-columns: 1fr;
  }

  .profile-header-card {
    flex-direction: column;
    text-align: center;
  }

  .tabs-navigation-bar {
    flex-wrap: wrap;
    justify-content: center;
  }
}