/* Main styles for Mental Health Pattern Recognition Assistant Website */

/* Base styles extending design system */
body {
  overflow-x: hidden;
}

/* Header styles */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-50);
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-4) 0;
  transition: all var(--transition-normal) var(--transition-timing);
  overflow: visible;
}

.site-header.scrolled {
  padding: var(--spacing-2) 0;
  box-shadow: var(--shadow-md);
}

.logo h1 {
  font-size: var(--font-size-2xl);
  margin: 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-fill-color: transparent;
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-6);
}

.nav-link {
  position: relative;
  font-weight: var(--font-weight-medium);
  color: var(--neutral-700);
  transition: color var(--transition-fast) var(--transition-timing);
}

.nav-link:hover {
  color: var(--primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: width var(--transition-normal) var(--transition-timing);
}

.nav-link:hover::after {
  width: 100%;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-2);
  z-index: 100;
  position: relative;
}

.mobile-menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--neutral-700);
  margin: 5px 0;
  transition: all var(--transition-normal) var(--transition-timing);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Hero section */
.hero-section {
  position: relative;
  padding: var(--spacing-24) 0 var(--spacing-16);
  margin-top: 80px;
  overflow: hidden;
}

.hero-content {
  max-width: 600px;
  color: white;
  position: relative;
  z-index: 2;
}

.hero-content h1 {
  font-size: var(--font-size-6xl);
  margin-bottom: var(--spacing-4);
  line-height: 1.1;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-8);
  opacity: 0.9;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-4);
  margin-top: var(--spacing-8);
}

.hero-image {
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  width: 50%;
  max-width: 600px;
  z-index: 1;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image img.floating {
  width: 100%;
  height: auto;
  object-fit: contain;
  opacity: 0.9;
  animation: float 6s ease-in-out infinite;
}

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

.floating-element {
  position: absolute;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  z-index: 1;
}

.pulse {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.3);
  animation: pulse 2s infinite;
}

.wave-bottom {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  overflow: hidden;
  line-height: 0;
  z-index: 1;
}

.wave-bottom svg {
  display: block;
  width: 100%;
  height: auto;
  position: relative;
}

/* Features preview section */
.features-preview {
  padding: var(--spacing-16) 0;
}

.section-title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-4);
}

.section-subtitle {
  font-size: var(--font-size-xl);
  color: var(--neutral-600);
  max-width: 800px;
  margin: 0 auto var(--spacing-12);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-8);
}

.feature-card {
  background-color: var(--background);
  border-radius: var(--border-radius-lg);
  padding-left: var(--spacing-6);
  padding-right: var(--spacing-6);
  padding-top: var(--spacing-6);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal) var(--transition-timing);
  height: 100%;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 60px;
  height: 60px;
  margin-bottom: var(--spacing-4);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--primary-light);
  border-radius: var(--border-radius-full);
  color: var(--primary-dark);
}

.feature-icon svg {
  width: 30px;
  height: 30px;
}

.feature-icon img {
  width: 30px;
  height: 30px;
}

.feature-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-2);
}

/* Statistics section */
.statistics-section {
  padding: var(--spacing-16) 0;
  background-color: var(--background-alt);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-6);
  margin-top: var(--spacing-8);
}

.stat-card {
  text-align: center;
  padding: var(--spacing-6);
  background-color: var(--background);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.stat-card h3 {
  font-size: var(--font-size-5xl);
  color: var(--primary);
  margin-bottom: var(--spacing-2);
}

.stat-card p {
  color: var(--neutral-600);
  margin-bottom: 0;
}

/* How it works section */
.how-it-works {
  padding: var(--spacing-16) 0;
}

.steps-container {
  max-width: 900px;
  margin: 0 auto;
}

.step {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-12);
  position: relative;
}

.step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 25px;
  width: 2px;
  height: 50px;
  background-color: var(--primary-light);
}

.step-number {
  width: 50px;
  height: 50px;
  border-radius: var(--border-radius-full);
  background-color: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-right: var(--spacing-6);
  flex-shrink: 0;
}

.step-content {
  flex: 1;
}

.step-content h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-2);
}

.step-image {
  width: 200px;
  flex-shrink: 0;
  margin-left: var(--spacing-6);
}

.step-image img {
  width: 100%;
  height: auto;
  transition: transform var(--transition-normal) var(--transition-timing);
}

/* Testimonials section */
.testimonials {
  padding: var(--spacing-16) 0;
  color: white;
  position: relative;
}

.testimonials-slider {
  max-width: 800px;
  margin: 0 auto;
  overflow: hidden;
  position: relative;
}

.testimonial-card {
  background-color: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-6);
  margin: var(--spacing-4);
}

.testimonial-content {
  font-size: var(--font-size-lg);
  font-style: italic;
  margin-bottom: var(--spacing-4);
}

.testimonial-author {
  display: flex;
  align-items: center;
}

.testimonial-avatar {
  width: 50px;
  height: 50px;
  border-radius: var(--border-radius-full);
  margin-right: var(--spacing-3);
}

.testimonial-info h4 {
  margin-bottom: 0;
  font-size: var(--font-size-base);
}

.testimonial-info p {
  margin-bottom: 0;
  font-size: var(--font-size-sm);
  opacity: 0.8;
}

.testimonial-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: var(--spacing-6);
}

.testimonial-prev,
.testimonial-next {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-full);
  background-color: rgba(255, 255, 255, 0.2);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast) var(--transition-timing);
}

.testimonial-prev:hover,
.testimonial-next:hover {
  background-color: rgba(255, 255, 255, 0.3);
}

.testimonial-prev::before,
.testimonial-next::before {
  content: '';
  width: 10px;
  height: 10px;
  border-top: 2px solid white;
  border-right: 2px solid white;
}

.testimonial-prev::before {
  transform: rotate(-135deg);
}

.testimonial-next::before {
  transform: rotate(45deg);
}

.testimonial-dots {
  display: flex;
  gap: var(--spacing-2);
  margin: 0 var(--spacing-4);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: var(--border-radius-full);
  background-color: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: background-color var(--transition-fast) var(--transition-timing);
}

.dot.active {
  background-color: white;
}

/* CTA section */
.cta-section {
  padding: var(--spacing-16) 0;
  text-align: center;
}

.cta-content {
  max-width: 800px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-4);
}

.cta-content p {
  font-size: var(--font-size-xl);
  color: var(--neutral-600);
  margin-bottom: var(--spacing-8);
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-4);
}

/* Footer */
.site-footer {
  background-color: var(--neutral-800);
  color: white;
  padding: var(--spacing-16) 0 var(--spacing-6);
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-12);
}

.footer-about h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-4);
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-fill-color: transparent;
}

.social-links {
  display: flex;
  gap: var(--spacing-3);
  margin-top: var(--spacing-4);
}

.social-links a {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-full);
  background-color: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast) var(--transition-timing);
  color: white;
}

.social-links a:hover {
  background-color: var(--primary);
  transform: translateY(-3px);
}

.social-links svg {
  width: 20px;
  height: 20px;
}

.footer-links h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-4);
}

.footer-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: var(--spacing-2);
}

.footer-links a {
  color: var(--neutral-300);
  transition: color var(--transition-fast) var(--transition-timing);
}

.footer-links a:hover {
  color: white;
}

.footer-newsletter h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-4);
}

.newsletter-form {
  display: flex;
  margin-top: var(--spacing-4);
}

.newsletter-form input {
  flex: 1;
  padding: var(--spacing-2) var(--spacing-3);
  border: none;
  border-radius: var(--border-radius-md) 0 0 var(--border-radius-md);
}

.newsletter-form button {
  border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  margin-bottom: 0;
  font-size: var(--font-size-sm);
  color: var(--neutral-400);
}

/* Wave animation for footer */
.wave-animation {
  position: absolute;
  top: 0px !important;
  left: 0;
  width: 100%;
  height: 100px;
  overflow: hidden;
}

.wave-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 200%;
  height: 100%;
  background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 1200 120" xmlns="http://www.w3.org/2000/svg"><path d="M0 0v46.29c47.79 22.2 103.59 32.17 158 28 70.36-5.37 136.33-33.31 206.8-37.5 73.84-4.36 147.54 16.88 218.2 35.26 69.27 18.17 138.3 24.88 209.4 13.08 36.15-6 69.85-17.84 104.45-29.34C989.49 25 1113-14.29 1200 52.47V0z" fill="%23111827" opacity=".25"/></svg>') repeat-x;
  animation: wave 25s linear infinite;
}

@keyframes wave {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* Responsive styles */
@media (max-width: 1024px) {
  .hero-content h1 {
    font-size: var(--font-size-5xl);
  }
  
  .hero-image {
    width: 45%;
  }
}

/* Mobile menu base styles - these apply regardless of screen size
   to ensure menu works properly in all contexts */
.mobile-menu-toggle.active + .main-nav,
.main-nav.active {
  display: block !important;
}

/* Main mobile styles */
@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: white;
    padding: var(--spacing-4);
    box-shadow: var(--shadow-md);
    border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
    z-index: 90;
  }
  
  .main-nav.active {
    display: block;
  }
  
  .main-nav ul {
    flex-direction: column;
    gap: var(--spacing-4);
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .hero-section {
    padding: var(--spacing-16) 0 var(--spacing-12);
  }
  
  .hero-content {
    max-width: 100%;
    text-align: center;
  }
  
  .hero-content h1 {
    font-size: var(--font-size-4xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-lg);
  }
  
  .hero-cta {
    justify-content: center;
  }
  
  .hero-image {
    position: relative;
    top: auto;
    right: auto;
    transform: none;
    width: 80%;
    margin: var(--spacing-8) auto 0;
  }
  
  .step {
    flex-direction: column;
    text-align: center;
  }
  
  .step-number {
    margin-right: 0;
    margin-bottom: var(--spacing-4);
  }
  
  .step-image {
    margin-left: 0;
    margin-top: var(--spacing-4);
    width: 150px;
  }
  
  .step:not(:last-child)::after {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .cta-buttons {
    flex-direction: column;
    gap: var(--spacing-3);
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: var(--font-size-3xl);
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .section-subtitle {
    font-size: var(--font-size-base);
  }
  
  .testimonial-card {
    padding: var(--spacing-4);
  }
  
  .newsletter-form {
    flex-direction: column;
  }
  
  .newsletter-form input {
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-2);
  }
  
  .newsletter-form button {
    border-radius: var(--border-radius-md);
  }
}