/* Trang chủ - Các phần giao diện được cải tiến */

/* ==== Danh mục tài liệu ==== */
.categories {
  padding: var(--spacing-16) 0;
  background-color: var(--white);
}

.categories .section-header {
  margin-bottom: var(--spacing-12);
  text-align: center;
}

.categories .section-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: var(--spacing-4);
  position: relative;
  display: inline-block;
}

.categories .section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -12px;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  transform: translateX(-50%);
  border-radius: var(--radius-full);
}

.categories .section-description {
  font-size: 1.1rem;
  color: var(--gray-600);
  max-width: 700px;
  margin: 0 auto;
}

.category-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-10);
}

.category-pill {
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--radius-full);
  background-color: var(--gray-100);
  color: var(--gray-700);
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
}

.category-pill:hover {
  background-color: var(--gray-200);
  transform: translateY(-2px);
}

.category-pill.active {
  background-color: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(67, 97, 238, 0.25);
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-10);
}

.category-card {
  display: flex;
  flex-direction: column;
  background-color: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition-normal);
  border: 1px solid var(--gray-200);
  height: 100%;
}

.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.category-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: var(--spacing-6) auto;
  font-size: 2rem;
  background: linear-gradient(135deg, var(--primary-light), rgba(67, 97, 238, 0.2));
  color: var(--primary);
  transition: var(--transition-normal);
}

.category-card:hover .category-icon {
  transform: scale(1.1);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  box-shadow: 0 8px 20px rgba(67, 97, 238, 0.3);
}

.category-content {
  padding: var(--spacing-6);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.category-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-3);
  text-align: center;
}

.category-description {
  color: var(--gray-600);
  text-align: center;
  margin-bottom: var(--spacing-6);
  flex-grow: 1;
}

.category-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-4);
  border-top: 1px solid var(--gray-200);
}

.document-count {
  font-size: 0.9rem;
  color: var(--gray-500);
}

.view-more {
  font-weight: 600;
  color: var(--primary);
  font-size: 0.9rem;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
  transition: var(--transition-fast);
}

.view-more:hover {
  color: var(--secondary);
  transform: translateX(3px);
}

.view-all {
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  color: var(--white);
  font-weight: 700;
  text-align: center;
  padding: var(--spacing-4) var(--spacing-8);
  border-radius: var(--radius);
  text-decoration: none;
  display: block;
  width: fit-content;
  margin: 0 auto;
  transition: var(--transition-normal);
  box-shadow: 0 6px 15px rgba(67, 97, 238, 0.2);
}

.view-all:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(67, 97, 238, 0.3);
}

.view-all i {
  margin-left: var(--spacing-2);
}

/* ==== Tài liệu nổi bật ==== */
.featured-documents {
  padding: var(--spacing-16) 0;
  background-color: var(--gray-50);
  position: relative;
  overflow: hidden;
}

.featured-documents::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect x="0" y="0" width="10" height="10" fill="%23f3f4f6" /></svg>');
  opacity: 0.5;
  z-index: 0;
}

.featured-documents .container {
  position: relative;
  z-index: 1;
}

.section-header-with-controls {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: var(--spacing-10);
}

.header-text {
  max-width: 70%;
}

.section-header-with-controls .section-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: var(--spacing-4);
  position: relative;
}

.section-header-with-controls .section-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -12px;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: var(--radius-full);
}

.section-header-with-controls .section-description {
  font-size: 1.1rem;
  color: var(--gray-600);
}

.slider-controls {
  display: flex;
  gap: var(--spacing-3);
}

.slider-btn {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--white);
  color: var(--gray-700);
  border: 1px solid var(--gray-200);
  cursor: pointer;
  transition: var(--transition-fast);
}

.slider-btn:hover {
  background-color: var(--primary);
  color: var(--white);
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 6px 12px rgba(67, 97, 238, 0.2);
}

.documents-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-8);
}

.document-card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition-normal);
  border: 1px solid var(--gray-200);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.document-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.document-image {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.document-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-normal);
}

.document-card:hover .document-image img {
  transform: scale(1.05);
}

.document-badge {
  position: absolute;
  top: var(--spacing-4);
  right: var(--spacing-4);
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
}

.document-badge.premium {
  background-color: var(--accent);
  color: var(--white);
}

.document-badge.free {
  background-color: var(--success);
  color: var(--white);
}

.document-author {
  position: absolute;
  bottom: var(--spacing-4);
  left: var(--spacing-4);
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  background-color: rgba(255, 255, 255, 0.9);
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-full);
  backdrop-filter: blur(4px);
}

.author-avatar {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

.author-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-800);
}

.document-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(33, 37, 41, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-normal);
}

.document-card:hover .document-overlay {
  opacity: 1;
}

.view-document-btn {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  background-color: var(--white);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: var(--transition-fast);
}

.view-document-btn:hover {
  background-color: var(--primary);
  color: var(--white);
  transform: scale(1.1);
}

.document-content {
  padding: var(--spacing-5);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.document-tags {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-3);
}

.document-category {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
  background-color: var(--primary-light);
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-full);
}

.document-date {
  font-size: 0.75rem;
  color: var(--gray-500);
}

.document-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-3);
  line-height: 1.4;
}

.document-description {
  color: var(--gray-600);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-4);
  flex-grow: 1;
}

.document-stats {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.document-rating {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.stars {
  display: flex;
  gap: 2px;
}

.stars i {
  color: var(--warning);
  font-size: 0.9rem;
}

.rating-count {
  font-size: 0.8rem;
  color: var(--gray-500);
}

.document-metrics {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.document-metrics span {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  color: var(--gray-600);
}

.document-footer {
  padding: var(--spacing-4) var(--spacing-5);
  border-top: 1px solid var(--gray-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.document-price {
  display: flex;
  flex-direction: column;
}

.price {
  font-weight: 700;
  color: var(--accent);
  font-size: 1.1rem;
}

.price-label {
  font-size: 0.75rem;
  color: var(--gray-500);
}

.detail-btn {
  background-color: var(--primary);
  color: var(--white);
  font-weight: 600;
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--radius);
  text-decoration: none;
  transition: var(--transition-fast);
}

.detail-btn:hover {
  background-color: var(--secondary);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(67, 97, 238, 0.25);
}

/* ==== Upload Document ==== */
.upload-document {
  padding: var(--spacing-16) 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.upload-document::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 400px;
  height: 400px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  transform: translate(200px, -200px);
}

.upload-document::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 300px;
  height: 300px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  transform: translate(-150px, 150px);
}

.upload-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-10);
  position: relative;
  z-index: 1;
}

.upload-info {
  padding-right: var(--spacing-6);
}

.upload-info .section-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: var(--spacing-6);
  line-height: 1.2;
  position: relative;
}

.upload-info .section-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -16px;
  width: 80px;
  height: 4px;
  background-color: var(--accent);
  border-radius: var(--radius-full);
}

.upload-info .section-description {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-8);
  opacity: 0.9;
}

.benefits {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-6);
}

.benefit-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-4);
}

.benefit-icon {
  width: 54px;
  height: 54px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background-color: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(4px);
  transition: var(--transition-normal);
}

.benefit-icon.coin-icon {
  color: #FFD700;
}

.benefit-icon.shield-icon {
  color: #4ade80;
}

.benefit-icon.community-icon {
  color: #60a5fa;
}

.benefit-item:hover .benefit-icon {
  transform: scale(1.1) rotate(5deg);
  background-color: rgba(255, 255, 255, 0.25);
}

.benefit-text {
  flex: 1;
}

.benefit-title {
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: var(--spacing-2);
}

.benefit-description {
  opacity: 0.8;
  font-size: 0.95rem;
}

.upload-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-4);
  margin-top: var(--spacing-8);
}

.stat-item {
  background-color: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  padding: var(--spacing-4);
  text-align: center;
  backdrop-filter: blur(4px);
  transition: var(--transition-normal);
}

.stat-item:hover {
  transform: translateY(-5px);
  background-color: rgba(255, 255, 255, 0.25);
}

.stat-number {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: var(--spacing-1);
  font-family: var(--font-heading);
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.8;
}

.upload-promo {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-8);
  box-shadow: var(--shadow-lg);
  color: var(--gray-800);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.upload-promo::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 150px;
  height: 150px;
  background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%);
  border-radius: 50%;
  z-index: 0;
}

.upload-promo::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, var(--accent-light) 0%, transparent 70%);
  border-radius: 50%;
  z-index: 0;
}

.upload-illustration {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 50%;
  margin: 0 auto var(--spacing-6);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.upload-illustration i {
  font-size: 3rem;
  color: var(--white);
}

.promo-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-4);
  color: var(--gray-900);
  position: relative;
  z-index: 1;
}

.promo-description {
  color: var(--gray-600);
  margin-bottom: var(--spacing-6);
  position: relative;
  z-index: 1;
}

.promo-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-8);
  position: relative;
  z-index: 1;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  text-align: left;
}

.feature-item i {
  color: var(--success);
  font-size: 1.2rem;
}

.feature-item span {
  color: var(--gray-700);
  font-size: 0.95rem;
  font-weight: 500;
}

.upload-cta-btn {
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  color: var(--white);
  font-weight: 700;
  padding: var(--spacing-4) var(--spacing-8);
  border-radius: var(--radius);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-3);
  transition: var(--transition-normal);
  box-shadow: 0 6px 15px rgba(67, 97, 238, 0.2);
  position: relative;
  z-index: 1;
}

.upload-cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(67, 97, 238, 0.3);
}

/* ==== How It Works ==== */
.how-it-works {
  padding: var(--spacing-16) 0;
  background-color: var(--white);
}

.how-it-works .section-header {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.how-it-works .section-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: var(--spacing-4);
  position: relative;
  display: inline-block;
}

.how-it-works .section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -12px;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  transform: translateX(-50%);
  border-radius: var(--radius-full);
}

.how-it-works .section-description {
  font-size: 1.1rem;
  color: var(--gray-600);
  max-width: 700px;
  margin: 0 auto;
}

.steps-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-6);
  position: relative;
}

.steps-container::before {
  content: '';
  position: absolute;
  top: 60px;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-light) 0%, var(--accent-light) 100%);
  z-index: 0;
}

.step {
  background-color: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--spacing-6);
  position: relative;
  z-index: 1;
  transition: var(--transition-normal);
  text-align: center;
}

.step:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.step-number {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  font-weight: 800;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-6);
  position: relative;
  z-index: 2;
  transition: var(--transition-normal);
}

.step:hover .step-number {
  transform: scale(1.1);
  box-shadow: 0 8px 16px rgba(67, 97, 238, 0.3);
}

.step-number-secondary {
  background: linear-gradient(135deg, var(--secondary), #2d27a3);
}

.step-number-accent {
  background: linear-gradient(135deg, var(--accent), #db127a);
}

.step-number-success {
  background: linear-gradient(135deg, var(--success), #0ca678);
}

.step-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-3);
}

.step-description {
  color: var(--gray-600);
  font-size: 0.95rem;
}

.section-footer {
  margin-top: var(--spacing-12);
  text-align: center;
}

.primary-btn {
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  color: var(--white);
  font-weight: 700;
  padding: var(--spacing-4) var(--spacing-8);
  border-radius: var(--radius);
  text-decoration: none;
  display: inline-block;
  transition: var(--transition-normal);
  box-shadow: 0 6px 15px rgba(67, 97, 238, 0.2);
}

.primary-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(67, 97, 238, 0.3);
}

/* ==== Testimonials ==== */
.testimonials {
  padding: var(--spacing-16) 0;
  background-color: var(--gray-50);
  position: relative;
  overflow: hidden;
}

.testimonials::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" width="100" height="100"><path d="M95,50 L50,5 L5,50 L50,95 L95,50Z" fill="none" stroke="%23e5e7eb" stroke-width="1"/></svg>') repeat;
  opacity: 0.5;
  z-index: 0;
}

.testimonials .container {
  position: relative;
  z-index: 1;
}

.testimonials .section-header {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.testimonials .section-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: var(--spacing-4);
  position: relative;
  display: inline-block;
}

.testimonials .section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -12px;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  transform: translateX(-50%);
  border-radius: var(--radius-full);
}

.testimonials .section-description {
  font-size: 1.1rem;
  color: var(--gray-600);
  max-width: 700px;
  margin: 0 auto;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-6);
}

.testimonial-card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-6);
  box-shadow: var(--shadow);
  transition: var(--transition-normal);
  position: relative;
  z-index: 1;
  border: 1px solid var(--gray-200);
}

.testimonial-card::before {
  content: '\f10d';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  top: -15px;
  left: 25px;
  font-size: 4rem;
  color: var(--primary-light);
  z-index: -1;
  opacity: 0.6;
  transition: var(--transition-normal);
}

.testimonial-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.testimonial-card:hover::before {
  transform: scale(1.2);
  opacity: 0.8;
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-4);
}

.testimonial-avatar {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 3px solid var(--gray-200);
  transition: var(--transition-normal);
}

.testimonial-card:hover .testimonial-avatar {
  border-color: var(--primary);
  transform: scale(1.1);
}

.author-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.author-title {
  font-size: 0.9rem;
  color: var(--gray-600);
}

.testimonial-rating {
  display: flex;
  gap: 4px;
  margin-bottom: var(--spacing-4);
}

.testimonial-rating i {
  color: var(--warning);
}

.testimonial-text {
  color: var(--gray-700);
  font-style: italic;
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

/* ==== Newsletter ==== */
.newsletter {
  padding: var(--spacing-12) 0;
  background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.newsletter::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
}

.newsletter::after {
  content: '';
  position: absolute;
  bottom: -50px;
  left: -50px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
}

.newsletter-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.newsletter-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: var(--spacing-3);
}

.newsletter-description {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-6);
  opacity: 0.9;
}

.newsletter-form {
  display: flex;
  max-width: 500px;
  margin: 0 auto;
  border-radius: var(--radius-full);
  overflow: hidden;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.newsletter-input {
  flex: 1;
  padding: var(--spacing-4) var(--spacing-6);
  border: none;
  font-family: var(--font-body);
  font-size: 1rem;
}

.newsletter-input:focus {
  outline: none;
}

.newsletter-button {
  background-color: var(--gray-900);
  color: var(--white);
  font-weight: 700;
  padding: var(--spacing-4) var(--spacing-6);
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
}

.newsletter-button:hover {
  background-color: var(--gray-800);
}

/* Responsive Styles for all sections */
@media (max-width: 1024px) {
  .upload-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
  }
  
  .upload-info {
    padding-right: 0;
  }
  
  .upload-info .section-title {
    font-size: 2rem;
  }
  
  .section-header-with-controls {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-4);
  }
  
  .header-text {
    max-width: 100%;
  }
  
  .section-header-with-controls .section-title::after {
    left: 50%;
    transform: translateX(-50%);
  }
}

@media (max-width: 768px) {
  .categories-grid,
  .documents-grid,
  .testimonials-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  }
  
  .steps-container {
    grid-template-columns: 1fr;
  }
  
  .steps-container::before {
    display: none;
  }
  
  .newsletter-form {
    flex-direction: column;
    border-radius: var(--radius);
  }
  
  .newsletter-input {
    border-radius: var(--radius) var(--radius) 0 0;
    text-align: center;
  }
  
  .newsletter-button {
    border-radius: 0 0 var(--radius) var(--radius);
  }
}

@media (max-width: 640px) {
  .categories .section-title,
  .section-header-with-controls .section-title,
  .upload-info .section-title,
  .how-it-works .section-title,
  .testimonials .section-title {
    font-size: 1.8rem;
  }
  
  .categories .section-description,
  .section-header-with-controls .section-description,
  .upload-info .section-description,
  .how-it-works .section-description,
  .testimonials .section-description,
  .newsletter-description {
    font-size: 1rem;
  }
  
  .category-filters {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: var(--spacing-4);
    justify-content: flex-start;
  }
  
  .category-pill {
    white-space: nowrap;
  }
  
  .radio-options {
    flex-direction: column;
  }
}