/* TeachMeMedical - Flatiron-inspired style */

/* Variables */
:root {
  /* Colors */
  --primary-blue: #1E75FF;
  --dark-blue: #0A2540;
  --white: #FFFFFF;
  --off-white: #F7F9FC;
  --light-gray: #E5E9F2;
  --text-dark: #222222;
  --text-light: #637381;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --spacing-xxl: 6rem;
  
  /* Other */
  --border-radius: 8px;
  --container-width: 1200px;
  --container-padding: 2rem;
  --transition: all 0.3s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--text-dark);
  line-height: 1.5;
  background-color: var(--white);
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  position: relative;
  z-index: 1;
}

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

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

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-bottom: 1rem;
  line-height: 1.2;
  font-weight: 700;
}

h1 {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-light);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  padding: var(--spacing-sm);
  background-color: var(--primary-blue);
  color: var(--white);
  z-index: 1001;
  transition: top 0.3s;
}

.skip-link:focus {
  top: 0;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 1.75rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.btn-primary {
  background-color: var(--primary-blue);
  color: var(--white);
  border: 1px solid var(--primary-blue);
}

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

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

.btn-outline:hover {
  color: var(--primary-blue);
  border-color: var(--primary-blue);
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--white);
  padding: var(--spacing-md) 0;
  z-index: 1000;
  border-bottom: 1px solid var(--light-gray);
}

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

.logo {
  display: inline-block;
}

.logo-svg {
  height: 30px;
  width: auto;
}

/* Navigation */
.primary-nav {
  display: flex;
}

.nav-list {
  display: flex;
  gap: var(--spacing-md);
}

.nav-item {
  position: relative;
}

.nav-item > a {
  padding: var(--spacing-sm) 0;
  font-weight: 500;
}

.has-dropdown > a::after {
  content: '';
  display: inline-block;
  width: 0.6em;
  height: 0.6em;
  margin-left: 0.4em;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  vertical-align: middle;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: -1rem;
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  min-width: 200px;
  padding: var(--spacing-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 100;
}

.has-dropdown:hover .dropdown-menu,
.has-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.dropdown-menu a {
  display: block;
  padding: var(--spacing-xs) 0;
  color: var(--text-light);
}

.dropdown-menu a:hover {
  color: var(--primary-blue);
}

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

.menu-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-dark);
  margin: 5px 0;
  transition: var(--transition);
}

/* Hero Section */
.hero-section {
  padding: 180px 0 var(--spacing-xxl);
  background-color: var(--white);
  background-image: 
    linear-gradient(rgba(30, 117, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 117, 255, 0.05) 1px, transparent 1px);
  background-size: 100px 100px;
  border-bottom: 1px solid var(--light-gray);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-image: url('/static/images/flatiron/hero-bg.svg');
  background-size: cover;
  background-position: center;
  opacity: 0.18;
  z-index: 0;
}

/* Add a more direct, simpler approach */
.hero-bg-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.2;
}

/* Ensure relative positioning for content */
.hero-flex {
  position: relative;
  z-index: 1;
}

.hero-section .container {
  z-index: 5;
}

.hero-content {
  max-width: 100%;
  position: relative;
  z-index: 20;
}

.hero-content h1 {
  font-size: 4rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--spacing-xl);
  max-width: 900px;
  color: var(--text-dark);
  position: relative;
  z-index: 15;
}

.hero-description {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
  position: relative;
  z-index: 15;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-light);
  max-width: 600px;
  margin-bottom: 0;
  position: relative;
  z-index: 15;
}

.hero-features {
  max-width: 600px;
  position: relative;
  z-index: 15;
}

.feature-label {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
  position: relative;
  z-index: 15;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  position: relative;
  z-index: 15;
}

.feature-list li {
  position: relative;
  z-index: 15;
}

.feature-list li a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
  border-top: 1px solid var(--light-gray);
  border-bottom: 1px solid var(--light-gray);
  color: var(--text-dark);
  font-weight: 500;
  transition: all 0.3s ease;
}

.feature-list li a:hover {
  color: var(--primary-blue);
}

.feature-list li a:hover i {
  transform: translateX(5px);
}

.feature-list li i {
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
}

.feature-list li span {
  flex: 1;
}

.hero-visual {
  margin-top: var(--spacing-lg);
  width: 100%;
  position: relative;
  z-index: 5;
}

.demo-chat-interface {
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  max-width: 650px;
  min-height: 500px;
  display: flex;
  flex-direction: column;
  margin: 0 auto;
  position: relative;
  z-index: 5;
}

/* Ensure demo elements don't have higher z-index than hero content */
.demo-header {
  position: relative;
  z-index: 5;
}

.demo-chat-area {
  position: relative;
  z-index: 5;
}

.demo-options {
  position: relative;
  z-index: 5;
}

/* Media queries for hero section */
@media (min-width: 992px) {
  .hero-flex {
    flex-direction: row;
    align-items: flex-start;
  }
  
  .hero-content {
    max-width: 50%;
    padding-right: 2rem;
  }
  
  .hero-visual {
    max-width: 50%;
    margin-top: 0;
  }
}

@media (max-width: 992px) {
  .hero-content h1 {
    font-size: 3.5rem;
  }
  
  .hero-subtitle, 
  .hero-features {
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  .hero-section {
    padding: 120px 0 var(--spacing-xl);
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .feature-list li a {
    flex-wrap: nowrap;
    gap: 10px;
  }
}

/* Solutions Section */
.solutions-section {
  padding: var(--spacing-xxl) 0;
  background-color: var(--white);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
}

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

.solution-card {
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  background-color: var(--off-white);
  transition: var(--transition);
}

.solution-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.solution-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background-color: var(--white);
  margin-bottom: var(--spacing-md);
  color: var(--primary-blue);
  font-size: 1.5rem;
}

.solution-card h3 {
  margin-bottom: var(--spacing-sm);
}

.solution-card p {
  margin-bottom: var(--spacing-md);
}

.solution-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--primary-blue);
  font-weight: 600;
}

.solution-link i {
  transition: transform 0.3s ease;
}

.solution-link:hover i {
  transform: translateX(5px);
}

/* Case Study Section */
.case-study-section {
  padding: var(--spacing-xxl) 0;
  background-color: var(--primary-blue);
  color: var(--white);
}

.case-study-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.case-study-text h2 {
  color: var(--white);
  margin-top: var(--spacing-sm);
}

.case-study-text p {
  color: rgba(255, 255, 255, 0.8);
}

.tag {
  display: inline-block;
  padding: 0.5rem 1rem;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 30px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.case-study-image img {
  border-radius: var(--border-radius);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

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

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.process-step {
  position: relative;
}

.step-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-blue);
  opacity: 0.2;
  margin-bottom: var(--spacing-sm);
}

.process-step h3 {
  margin-bottom: var(--spacing-sm);
}

.process-step p {
  margin-bottom: 0;
}

/* Testimonials Section */
.testimonials-section {
  padding: var(--spacing-xxl) 0;
  background-color: var(--off-white);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.testimonial {
  background-color: var(--white);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.testimonial-quote {
  position: relative;
  margin-bottom: var(--spacing-md);
}

.quote-icon {
  position: absolute;
  top: -15px;
  left: -15px;
  width: 40px;
  height: 40px;
  opacity: 0.8;
}

blockquote {
  font-size: 1.125rem;
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
  color: var(--text-dark);
  font-weight: 500;
}

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

.testimonial-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
}

cite {
  display: flex;
  flex-direction: column;
}

.testimonial-name {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-dark);
}

.testimonial-title {
  display: block;
  font-size: 0.875rem;
  color: var(--text-light);
}

/* CTA Section */
.cta-section {
  padding: var(--spacing-xxl) 0;
  background-color: var(--white);
  border-top: 1px solid var(--light-gray);
  border-bottom: 1px solid var(--light-gray);
}

.cta-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

/* Footer */
.site-footer {
  padding: var(--spacing-xxl) 0 var(--spacing-lg);
  background-color: var(--white);
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.footer-navigation {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
}

.footer-nav-group h3 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
}

.footer-nav-group ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-nav-group a {
  color: var(--text-light);
}

.footer-nav-group a:hover {
  color: var(--primary-blue);
}

.footer-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  border-top: 1px solid var(--light-gray);
  padding-top: var(--spacing-lg);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer-links a {
  color: var(--text-light);
  font-size: 0.875rem;
}

.copyright {
  color: var(--text-light);
  font-size: 0.875rem;
  margin-bottom: 0;
}

/* Media Queries */
@media (max-width: 992px) {
  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-demo {
    display: flex;
    justify-content: center;
  }

  .case-study-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }
  
  .site-header {
    padding: var(--spacing-sm) 0;
  }
  
  .primary-nav {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    height: calc(100vh - 80px);
    background-color: var(--white);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 999;
    padding: var(--spacing-lg);
  }
  
  .primary-nav.active {
    transform: translateX(0);
  }
  
  .nav-list {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
  
  .dropdown-menu {
    position: static;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    padding: var(--spacing-sm) 0 0 var(--spacing-md);
    display: none;
  }
  
  .has-dropdown.active .dropdown-menu {
    display: block;
  }
  
  .menu-toggle {
    display: block;
  }
  
  .hero-features {
    grid-template-columns: 1fr;
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .solutions-grid,
  .process-steps {
    grid-template-columns: 1fr;
  }
  
  .cta-buttons {
    flex-direction: column;
  }
  
  .footer-navigation {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

/* Animation Keyframes */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Demo Chat Interface */
.demo-header {
  background-color: var(--primary-blue);
  color: var(--white);
  padding: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.demo-header h3 {
  margin: 0;
  font-size: 1.2rem;
}

.demo-tag {
  background-color: rgba(255, 255, 255, 0.2);
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border-radius: 100px;
  font-weight: 500;
}

.demo-chat-area {
  flex: 1;
  padding: var(--spacing-md);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  min-height: 350px;
  max-height: 350px;
  background-color: var(--off-white);
  position: relative;
}

.demo-chat-message {
  max-width: 80%;
  padding: var(--spacing-sm);
  border-radius: 12px;
  position: relative;
  margin-bottom: 8px;
  white-space: pre-line;
}

.demo-chat-message.system {
  background-color: var(--white);
  color: var(--text-dark);
  align-self: flex-start;
  border-bottom-left-radius: 0;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.demo-chat-message.user {
  background-color: var(--primary-blue);
  color: var(--white);
  align-self: flex-end;
  border-bottom-right-radius: 0;
}

.message-tags {
  display: flex;
  gap: 5px;
  margin-bottom: 5px;
  flex-wrap: wrap;
}

.message-tag {
  font-size: 0.65rem;
  padding: 0.1rem 0.5rem;
  border-radius: 100px;
  background-color: var(--light-gray);
  color: var(--primary-blue);
  font-weight: 600;
}

.message-content {
  line-height: 1.5;
  word-break: break-word;
}

.data-highlight {
  color: var(--primary-blue);
  font-weight: 600;
}

.demo-options {
  padding: var(--spacing-md);
  background-color: var(--white);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.demo-option-btn {
  background-color: var(--off-white);
  border: none;
  border-radius: 20px;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  text-align: left;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.demo-option-btn:hover {
  background-color: var(--light-gray);
}

.demo-followup-options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.demo-followup-btn {
  background-color: transparent;
  border: 1px solid var(--light-gray);
  border-radius: 20px;
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.3s ease;
}

.demo-followup-btn:hover {
  background-color: var(--off-white);
  border-color: var(--primary-blue);
}

.demo-action-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.demo-action-btn {
  background-color: var(--primary-blue);
  color: var(--white);
  border: none;
  border-radius: 20px;
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.demo-action-btn:hover {
  background-color: var(--dark-blue);
}

.typing-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  background-color: var(--white);
  width: fit-content;
  border-radius: 10px;
  padding: 0.75rem 1rem;
  align-self: flex-start;
}

.typing-indicator span {
  display: block;
  width: 8px;
  height: 8px;
  background-color: var(--primary-blue);
  border-radius: 50%;
  opacity: 0.6;
  animation: pulse 1.5s infinite;
}

.typing-indicator span:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.6;
  }
  50% {
    transform: scale(1.2);
    opacity: 1;
  }
}

/* Team section */
.team-section {
  padding: var(--spacing-xxl) 0;
  background-color: var(--white);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.team-member {
  text-align: center;
}

.team-avatar {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: var(--spacing-md);
}

.team-name {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.team-title {
  color: var(--text-light);
}