/* Premium SaaS Design - DigitizeBlock 2025 */

/* Advanced Header Styles */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  transition: all var(--transition-base);
  padding: var(--space-4) 0;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-lg);
  padding: var(--space-3) 0;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.site-branding {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  z-index: 2;
}

.site-title {
  margin: 0;
  font-size: 1.75rem;
  font-weight: 800;
  font-family: var(--font-family-display);
  background: var(--gradient-ai);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.site-title::after {
  content: 'AI';
  position: absolute;
  top: -8px;
  right: -20px;
  font-size: 0.6rem;
  background: var(--gradient-primary);
  color: var(--color-white);
  padding: 2px 6px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.site-title a {
  color: inherit;
  text-decoration: none;
}

/* Premium Navigation */
.primary-navigation {
  display: flex;
  align-items: center;
  position: relative;
}

.primary-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-2);
  align-items: center;
}

.primary-menu li {
  position: relative;
}

.primary-menu a {
  color: var(--color-gray-700);
  font-weight: 500;
  font-size: 0.875rem;
  text-decoration: none;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.primary-menu a:hover {
  color: var(--color-primary-600);
  background: var(--color-primary-50);
  transform: translateY(-1px);
}

.primary-menu .current-menu-item a,
.primary-menu .current_page_item a {
  color: var(--color-primary-600);
  background: var(--color-primary-50);
  font-weight: 600;
}

/* Dropdown Menus */
.primary-menu .sub-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  padding: var(--space-4);
  min-width: 280px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
  border: 1px solid var(--color-gray-100);
  z-index: var(--z-dropdown);
}

.primary-menu li:hover .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.primary-menu .sub-menu li {
  width: 100%;
}

.primary-menu .sub-menu a {
  width: 100%;
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
}

/* Advanced Search */
.header-search {
  position: relative;
  margin-left: var(--space-4);
}

.search-toggle {
  background: var(--color-gray-100);
  border: none;
  color: var(--color-gray-600);
  cursor: pointer;
  padding: var(--space-3);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
}

.search-toggle:hover {
  color: var(--color-primary-600);
  background: var(--color-primary-50);
  transform: scale(1.05);
}

.search-form {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  padding: var(--space-6);
  min-width: 400px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
  border: 1px solid var(--color-gray-100);
  z-index: var(--z-dropdown);
}

.search-form.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.search-input {
  width: 100%;
  padding: var(--space-4);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  font-size: 1rem;
  transition: all var(--transition-base);
  background: var(--color-gray-50);
  font-family: var(--font-family-primary);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  background: var(--color-white);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-results {
  margin-top: var(--space-4);
  max-height: 400px;
  overflow-y: auto;
}

.search-result-item {
  padding: var(--space-4);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 1px solid transparent;
}

.search-result-item:hover {
  background: var(--color-gray-50);
  border-color: var(--color-primary-200);
}

.search-result-title {
  font-weight: 600;
  color: var(--color-gray-900);
  margin-bottom: var(--space-1);
  font-size: 0.875rem;
}

.search-result-excerpt {
  font-size: 0.75rem;
  color: var(--color-gray-500);
  line-height: 1.4;
}

.search-loading,
.search-no-results {
  text-align: center;
  padding: var(--space-8);
  color: var(--color-gray-500);
  font-size: 0.875rem;
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
  background: var(--color-gray-100);
  border: none;
  cursor: pointer;
  color: var(--color-gray-700);
  padding: var(--space-3);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
  position: relative;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}

.mobile-menu-toggle:hover {
  background: var(--color-primary-50);
  color: var(--color-primary-600);
}

.hamburger-icon {
  display: block;
  transition: all var(--transition-base);
}

.mobile-menu-toggle.active .hamburger-icon {
  transform: rotate(90deg);
}

/* Header CTA */
.header-cta {
  margin-left: var(--space-6);
}

.header-cta .btn {
  box-shadow: var(--shadow-base);
  font-weight: 600;
  position: relative;
  overflow: hidden;
}

.header-cta .btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.6s;
}

.header-cta .btn:hover::before {
  left: 100%;
}

/* Premium Hero Section */
.hero-section {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: var(--color-white);
  padding: var(--space-32) 0 var(--space-24);
  text-align: center;
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  align-items: center;
  margin-top: 80px;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(120, 119, 198, 0.2) 0%, transparent 50%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1000px;
  margin: 0 auto;
}

.hero-headline {
  font-size: clamp(3rem, 8vw, 5rem);
  font-weight: 900;
  margin-bottom: var(--space-6);
  line-height: 1.1;
  letter-spacing: -0.02em;
  animation: fadeInUp 1s ease-out;
  background: linear-gradient(135deg, #ffffff 0%, #f0f0f0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subheadline {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  margin-bottom: var(--space-10);
  opacity: 0.95;
  line-height: 1.6;
  font-weight: 400;
  animation: fadeInUp 1s ease-out 0.2s both;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease-out 0.4s both;
  margin-bottom: var(--space-16);
}

.hero-buttons .btn {
  padding: var(--space-4) var(--space-8);
  font-size: 1.125rem;
  font-weight: 600;
  min-width: 200px;
  position: relative;
  overflow: hidden;
}

.hero-buttons .btn-secondary {
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.3);
  color: var(--color-white);
  backdrop-filter: blur(10px);
}

.hero-buttons .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.25);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-12);
  margin-top: var(--space-16);
  animation: fadeInUp 1s ease-out 0.6s both;
}

.hero-stat {
  text-align: center;
}

.hero-stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  display: block;
  margin-bottom: var(--space-2);
  background: linear-gradient(135deg, #ffffff 0%, #f0f0f0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat-label {
  font-size: 0.875rem;
  opacity: 0.8;
  font-weight: 500;
}

/* Floating Elements */
.hero-floating-elements {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.floating-shape {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  animation: float 6s ease-in-out infinite;
}

.floating-shape:nth-child(1) {
  width: 100px;
  height: 100px;
  top: 15%;
  left: 10%;
  animation-delay: 0s;
}

.floating-shape:nth-child(2) {
  width: 80px;
  height: 80px;
  top: 60%;
  right: 15%;
  animation-delay: 2s;
}

.floating-shape:nth-child(3) {
  width: 60px;
  height: 60px;
  top: 30%;
  right: 30%;
  animation-delay: 4s;
}

.floating-shape:nth-child(4) {
  width: 40px;
  height: 40px;
  top: 70%;
  left: 20%;
  animation-delay: 1s;
}

.floating-shape:nth-child(5) {
  width: 120px;
  height: 120px;
  top: 40%;
  left: 70%;
  animation-delay: 3s;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% { 
    transform: translateY(0px) rotate(0deg); 
  }
  50% { 
    transform: translateY(-20px) rotate(180deg); 
  }
}

/* Premium Service Grid */
.services-section {
  padding: var(--space-32) 0;
  position: relative;
  background: var(--color-gray-50);
}

.services-header {
  text-align: center;
  margin-bottom: var(--space-20);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.services-header h2 {
  margin-bottom: var(--space-6);
  position: relative;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
}

.services-header h2::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

.services-header p {
  font-size: 1.25rem;
  color: var(--color-gray-600);
  line-height: 1.6;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: var(--space-8);
}

.service-card {
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-gray-200);
  background: var(--color-white);
  padding: var(--space-10);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.05), transparent);
  transition: left var(--transition-slow);
}

.service-card:hover::before {
  left: 100%;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
  border-color: var(--color-primary-300);
}

.service-icon {
  width: 100px;
  height: 100px;
  margin: 0 auto var(--space-8);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: var(--radius-3xl);
  font-size: 2.5rem;
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.service-icon::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255,255,255,0.2), transparent);
  transform: rotate(45deg);
  transition: transform var(--transition-slow);
}

.service-card:hover .service-icon::before {
  transform: rotate(45deg) translate(50%, 50%);
}

.service-card h3 {
  margin-bottom: var(--space-4);
  color: var(--color-gray-900);
  font-weight: 700;
  font-size: 1.5rem;
}

.service-card p {
  margin-bottom: var(--space-8);
  color: var(--color-gray-600);
  line-height: 1.7;
  font-size: 1rem;
}

.service-price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary-600);
  margin-bottom: var(--space-8);
  position: relative;
}

.service-price::before {
  content: 'Starting at';
  position: absolute;
  top: -24px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Premium Tool Grid */
.toolkit-section {
  padding: var(--space-32) 0;
  position: relative;
}

.toolkit-header {
  text-align: center;
  margin-bottom: var(--space-20);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.toolkit-header h2 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: var(--space-6);
  background: var(--gradient-ai);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.toolkit-header p {
  font-size: 1.25rem;
  color: var(--color-gray-600);
  line-height: 1.6;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-8);
}

.tool-card {
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  padding: var(--space-8);
  overflow: hidden;
}

.tool-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.tool-card:hover::after {
  transform: scaleX(1);
}

.tool-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-2xl);
  border-color: var(--color-primary-300);
}

.tool-icon {
  font-size: 3rem;
  margin-bottom: var(--space-6);
  display: block;
  filter: grayscale(0.3);
  transition: all var(--transition-base);
  position: relative;
}

.tool-icon::after {
  content: 'AI';
  position: absolute;
  top: -8px;
  right: -8px;
  font-size: 0.5rem;
  background: var(--gradient-primary);
  color: var(--color-white);
  padding: 2px 4px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.tool-card:hover .tool-icon {
  filter: grayscale(0);
  transform: scale(1.1);
}

.tool-card h3 {
  margin-bottom: var(--space-4);
  color: var(--color-gray-900);
  font-weight: 700;
  font-size: 1.25rem;
}

.tool-card p {
  margin-bottom: var(--space-8);
  color: var(--color-gray-600);
  font-size: 0.875rem;
  line-height: 1.6;
}

.tool-card .btn {
  width: 100%;
  max-width: 200px;
}

/* About Teaser */
.about-teaser {
  background: var(--gradient-primary);
  color: var(--color-white);
  padding: var(--space-32) 0;
  position: relative;
  overflow: hidden;
}

.about-teaser::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
  z-index: 1;
}

.about-teaser-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.about-teaser h2 {
  margin-bottom: var(--space-8);
  color: var(--color-white);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
}

.about-teaser p {
  margin-bottom: var(--space-10);
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.95);
  line-height: 1.7;
}

.about-teaser .btn {
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.3);
  color: var(--color-white);
  backdrop-filter: blur(10px);
  font-size: 1.125rem;
  padding: var(--space-4) var(--space-8);
}

.about-teaser .btn:hover {
  background: rgba(255, 255, 255, 0.25);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
}

/* Blog Archive Header */
.blog-archive-header {
  text-align: center;
  margin-bottom: var(--space-20);
  padding: var(--space-20) 0;
  background: var(--color-gray-50);
  position: relative;
}

.blog-archive-header h1 {
  margin-bottom: var(--space-6);
  color: var(--color-gray-900);
  position: relative;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
}

.blog-archive-header h1::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

.blog-archive-header p {
  font-size: 1.25rem;
  color: var(--color-gray-600);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Post Grid */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--space-10);
  margin-bottom: var(--space-20);
}

.posts-grid.list {
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.post-card {
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-gray-200);
  background: var(--color-white);
}

.post-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
  border-color: var(--color-primary-300);
}

.post-thumbnail {
  margin-bottom: var(--space-8);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  position: relative;
}

.post-thumbnail::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent, rgba(99, 102, 241, 0.1));
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 1;
}

.post-card:hover .post-thumbnail::before {
  opacity: 1;
}

.post-thumbnail img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.post-card:hover .post-thumbnail img {
  transform: scale(1.05);
}

.post-card h3 {
  margin-bottom: var(--space-4);
  font-size: 1.5rem;
  line-height: 1.3;
  font-weight: 700;
}

.post-card h3 a {
  color: var(--color-gray-900);
  text-decoration: none;
  transition: color var(--transition-base);
}

.post-card h3 a:hover {
  color: var(--color-primary-600);
}

.post-meta {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.post-meta span {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.post-meta span::before {
  content: '•';
  color: var(--color-primary-600);
}

.post-meta span:first-child::before {
  display: none;
}

.post-excerpt {
  margin-bottom: var(--space-8);
  color: var(--color-gray-600);
  line-height: 1.7;
  font-size: 1rem;
}

.post-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
}

.reading-time {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  font-weight: 500;
}

/* Premium Footer */
.site-footer {
  background: var(--color-gray-900);
  color: var(--color-white);
  padding: var(--space-32) 0 var(--space-12);
  margin-top: var(--space-32);
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-16);
  margin-bottom: var(--space-20);
}

.footer-logo h3 {
  margin-bottom: var(--space-6);
  color: var(--color-white);
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-ai);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-logo a {
  color: var(--color-white);
  text-decoration: none;
}

.footer-copyright {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1rem;
  line-height: 1.7;
}

.social-links {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-2xl);
  color: var(--color-white);
  text-decoration: none;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.social-link:hover {
  background: rgba(255, 255, 255, 0.2);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-12);
  text-align: center;
}

.footer-menu-list {
  display: flex;
  justify-content: center;
  gap: var(--space-8);
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.footer-menu-list a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  transition: color var(--transition-base);
}

.footer-menu-list a:hover {
  color: var(--color-white);
}

/* CTA Banner */
.cta-banner {
  background: var(--gradient-primary);
  color: var(--color-white);
  text-align: center;
  padding: var(--space-24);
  margin: var(--space-32) 0;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-3xl);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
  z-index: 1;
}

.cta-banner > * {
  position: relative;
  z-index: 2;
}

.cta-banner h2 {
  color: var(--color-white);
  margin-bottom: var(--space-8);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: var(--space-10);
  font-size: 1.25rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.cta-banner .btn {
  background: rgba(255, 255, 255, 0.15);
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
  font-size: 1.125rem;
  padding: var(--space-4) var(--space-8);
}

.cta-banner .btn:hover {
  background: rgba(255, 255, 255, 0.25);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-headline {
    font-size: clamp(2.5rem, 6vw, 4rem);
  }
  
  .hero-subheadline {
    font-size: clamp(1.125rem, 2.5vw, 1.375rem);
  }
  
  .services-grid {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  }
  
  .tools-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
  
  .posts-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  }
  
  .hero-stats {
    gap: var(--space-8);
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: var(--space-3) 0;
  }
  
  .header-content {
    flex-wrap: wrap;
    gap: var(--space-4);
  }
  
  .primary-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    box-shadow: var(--shadow-2xl);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    flex-direction: column;
    gap: var(--space-2);
    margin-top: var(--space-4);
    border: 1px solid var(--color-gray-100);
  }
  
  .primary-menu.active {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .header-search {
    order: -1;
    margin-left: 0;
    margin-right: var(--space-4);
  }
  
  .search-form {
    min-width: 320px;
    right: -50px;
  }
  
  .hero-section {
    padding: var(--space-24) 0;
    min-height: 90vh;
    margin-top: 70px;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-buttons .btn {
    width: 100%;
    max-width: 300px;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--space-6);
  }
  
  .services-grid,
  .tools-grid {
    grid-template-columns: 1fr;
  }
  
  .posts-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-menu-list {
    flex-direction: column;
    gap: var(--space-4);
  }
  
  .section {
    padding: var(--space-20) 0;
  }
  
  .section-lg {
    padding: var(--space-24) 0;
  }
}

/* Loading States */
.loading {
  opacity: 0.6;
  pointer-events: none;
  position: relative;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--color-primary-600);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Notification System */
.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-2xl);
  padding: var(--space-4) var(--space-6);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-toast);
  transform: translateX(400px);
  transition: transform var(--transition-base);
  max-width: 400px;
}

.notification.show {
  transform: translateX(0);
}

.notification-success {
  border-left: 4px solid var(--color-success);
}

.notification-error {
  border-left: 4px solid var(--color-error);
}

.notification-warning {
  border-left: 4px solid var(--color-warning);
}

.notification-info {
  border-left: 4px solid var(--color-primary-600);
}

.notification-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.notification-message {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-900);
}

.notification-close {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--color-gray-500);
  cursor: pointer;
  padding: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-base);
  transition: all var(--transition-fast);
}

.notification-close:hover {
  background: var(--color-gray-100);
  color: var(--color-gray-700);
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 56px;
  height: 56px;
  background: var(--gradient-primary);
  color: var(--color-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

/* Ripple Effect */
.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: scale(0);
  animation: ripple-animation 0.6s linear;
  pointer-events: none;
}

@keyframes ripple-animation {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* Tooltip System */
.tooltip {
  position: fixed;
  background: var(--color-gray-900);
  color: var(--color-white);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-lg);
  font-size: 0.75rem;
  font-weight: 500;
  z-index: var(--z-tooltip);
  pointer-events: none;
  transition: opacity var(--transition-fast);
  box-shadow: var(--shadow-lg);
  max-width: 200px;
  text-align: center;
}

.tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--color-gray-900);
}

/* Progress Bar */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: rgba(99, 102, 241, 0.1);
  z-index: var(--z-sticky);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.reading-progress.visible {
  opacity: 1;
}

.progress-bar {
  height: 100%;
  background: var(--gradient-primary);
  width: 0%;
  transition: width 0.1s ease;
}