/* CSS Variables */
:root {
  /* Colors - Professional palette inspired by Bettina's site */
  --primary-blue: #1e40af;
  --primary-purple: #8b5cf6;
  --primary-cyan: #06b6d4;
  --accent-blue: #3b82f6;
  --accent-purple: #a855f7;
  --accent-cyan: #0891b2;
  
  /* Neutral colors */
  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --black: #000000;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-black: 800;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  --spacing-xxxl: 6rem;
  
  /* Layout */
  --container-width: 1200px;
  --container-padding: 2rem;
  --section-padding: 6rem 0;
  --border-radius: 0.5rem;
  --border-radius-lg: 1rem;
  --border-radius-xl: 1.5rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index */
  --z-nav: 1000;
  --z-dropdown: 100;
  --z-modal: 10000;
}

/* Reset and Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-primary);
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--gray-800);
  background: var(--white);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  color: var(--gray-900);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p {
  margin: 0 0 1.5rem 0;
  color: var(--gray-600);
  line-height: 1.7;
}

a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* Layout Components */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

.section-title {
  font-size: 2.5rem;
  font-weight: var(--font-weight-black);
  color: var(--gray-900);
  margin-bottom: var(--spacing-sm);
  position: relative;
}

.title-underline {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-blue), var(--primary-purple));
  margin: var(--spacing-md) auto;
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--gray-600);
  font-weight: var(--font-weight-medium);
  max-width: 600px;
  margin: 0 auto;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--gray-200);
  z-index: var(--z-nav);
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-lg);
}

.nav-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.nav-brand .brand-link {
  font-size: 1.5rem;
  font-weight: var(--font-weight-black);
  color: var(--gray-900);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  gap: var(--spacing-xl);
}

.nav-link {
  color: var(--gray-700);
  font-weight: var(--font-weight-medium);
  font-size: 1rem;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-blue), var(--primary-purple));
  transition: width var(--transition-fast);
}

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.bar {
  width: 25px;
  height: 3px;
  background: var(--gray-700);
  transition: var(--transition-fast);
  border-radius: 2px;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 var(--spacing-xxxl) 0;
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 20%, rgba(30, 64, 175, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(6, 182, 212, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: var(--spacing-xxxl);
  align-items: center;
}

.hero-text {
  z-index: 2;
  position: relative;
}

.hero-title {
  margin-bottom: var(--spacing-lg);
}

.title-main {
  display: block;
  font-size: 3.5rem;
  font-weight: var(--font-weight-black);
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xs);
}

.title-sub {
  display: block;
  font-size: 1.5rem;
  font-weight: var(--font-weight-medium);
  color: var(--gray-600);
  line-height: 1.4;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--gray-600);
  margin-bottom: var(--spacing-xl);
  line-height: 1.7;
  max-width: 500px;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.image-container {
  width: 300px;
  height: 300px;
  position: relative;
}

.profile-image-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
}

.gradient-border {
  position: absolute;
  top: -8px;
  left: -8px;
  right: -8px;
  bottom: -8px;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple), var(--primary-cyan));
  border-radius: 50%;
  z-index: 0;
  filter: blur(1px);
  opacity: 0.8;
}

.profile-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  position: relative;
  z-index: 2;
  border: 6px solid var(--white);
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.1));
  transition: transform var(--transition-normal);
}

.profile-image:hover {
  transform: scale(1.05);
}

.profile-fallback {
  position: absolute;
  top: 6px;
  left: 6px;
  right: 6px;
  bottom: 6px;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.initials {
  font-size: 4rem;
  font-weight: var(--font-weight-black);
  color: var(--white);
  letter-spacing: -2px;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 1rem 2rem;
  border: none;
  border-radius: var(--border-radius);
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-normal);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  color: var(--white);
  box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.btn-outline {
  background: transparent;
  color: var(--primary-blue);
  border: 2px solid var(--primary-blue);
}

.btn-outline:hover {
  background: var(--primary-blue);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* About Section */
.about-section {
  padding: var(--section-padding);
  background: var(--white);
}

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-xxxl);
  align-items: start;
}

.about-text {
  font-size: 1.125rem;
  line-height: 1.8;
}

.lead-paragraph {
  font-size: 1.25rem;
  font-weight: var(--font-weight-medium);
  color: var(--gray-800);
  margin-bottom: var(--spacing-lg);
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.stat-card {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--gray-50);
  border-radius: var(--border-radius-lg);
  border: 2px solid var(--gray-200);
  transition: all var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-blue);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: var(--font-weight-black);
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  line-height: 1;
}

.stat-label {
  font-size: 0.95rem;
  color: var(--gray-600);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: var(--spacing-xs);
}

/* Expertise Section */
.expertise-section {
  padding: var(--section-padding);
  background: var(--gray-50);
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.expertise-card {
  background: var(--white);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  border: 1px solid var(--gray-200);
  position: relative;
  overflow: hidden;
}

.expertise-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(30, 64, 175, 0.05), transparent);
  transition: left var(--transition-slow);
}

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

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

.card-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--white);
  margin-bottom: var(--spacing-md);
}

.card-title {
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  color: var(--gray-900);
  margin-bottom: var(--spacing-sm);
}

.card-description {
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.tag {
  background: var(--primary-cyan);
  color: var(--white);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
}

/* ICP Section */
.icp-section {
  padding: var(--section-padding);
  background: var(--white);
}

.icp-intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-xxxl) auto;
}

.intro-text {
  font-size: 1.25rem;
  color: var(--gray-600);
  line-height: 1.7;
}

.icp-features {
  max-width: 800px;
  margin: 0 auto;
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.feature-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--gray-50);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-normal);
}

.feature-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  background: var(--white);
}

.feature-icon {
  width: 50px;
  height: 50px;
  background: var(--primary-cyan);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--white);
  flex-shrink: 0;
}

.feature-content h4 {
  font-size: 1.125rem;
  font-weight: var(--font-weight-bold);
  color: var(--gray-900);
  margin-bottom: var(--spacing-xs);
}

.feature-content p {
  color: var(--gray-600);
  margin: 0;
  line-height: 1.6;
}

/* Speaking Section */
.speaking-section {
  padding: var(--section-padding);
  background: var(--gray-50);
}

.speaking-intro {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--spacing-xxxl) auto;
}

.speaking-intro p {
  font-size: 1.125rem;
  color: var(--gray-600);
  line-height: 1.7;
}

.topics-container {
  margin-bottom: var(--spacing-xxxl);
}

.topics-title {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--gray-900);
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.topic-card {
  background: var(--white);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  text-align: center;
}

.topic-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.topic-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--white);
  margin: 0 auto var(--spacing-md) auto;
}

.topic-card h4 {
  font-size: 1.125rem;
  font-weight: var(--font-weight-bold);
  color: var(--gray-900);
  margin-bottom: var(--spacing-sm);
}

.topic-card p {
  color: var(--gray-600);
  margin: 0;
  line-height: 1.6;
}

.speaking-cta {
  text-align: center;
}

/* Media Section */
.media-section {
  padding: var(--section-padding);
  background: var(--white);
}

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

.testimonial-card {
  background: var(--gray-50);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  border-left: 4px solid var(--primary-blue);
  transition: all var(--transition-normal);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  background: var(--white);
}

.quote-content {
  margin-bottom: var(--spacing-lg);
}

.quote-icon {
  font-size: 1.5rem;
  color: var(--primary-blue);
  margin-bottom: var(--spacing-sm);
}

.quote-content blockquote {
  font-size: 1.125rem;
  color: var(--gray-700);
  font-style: italic;
  line-height: 1.7;
  margin: 0;
}

.quote-author {
  border-top: 1px solid var(--gray-200);
  padding-top: var(--spacing-md);
}

.author-name {
  display: block;
  font-weight: var(--font-weight-bold);
  color: var(--gray-900);
  margin-bottom: var(--spacing-xs);
}

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

/* Contact Section */
.contact-section {
  padding: var(--section-padding);
  background: var(--gray-50);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxxl);
  align-items: start;
}

.contact-info {
  padding-right: var(--spacing-lg);
}

.contact-text {
  margin-bottom: var(--spacing-xl);
}

.contact-text p {
  font-size: 1.125rem;
  color: var(--gray-600);
  line-height: 1.7;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--white);
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
}

.contact-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--white);
}

.contact-details h4 {
  font-size: 1rem;
  font-weight: var(--font-weight-bold);
  color: var(--gray-900);
  margin-bottom: var(--spacing-xs);
}

.contact-details a {
  color: var(--primary-blue);
  font-weight: var(--font-weight-medium);
}

/* Contact Form */
.contact-form {
  background: var(--white);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

.form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-group label {
  font-weight: var(--font-weight-semibold);
  color: var(--gray-800);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.875rem;
  border: 2px solid var(--gray-300);
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-family: var(--font-primary);
  background: var(--white);
  color: var(--gray-800);
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* Footer */
.footer {
  background: var(--gray-900);
  color: var(--white);
  padding: var(--spacing-xl) 0;
}

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

.footer-text p {
  color: var(--gray-400);
  margin: 0;
}

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

.footer .social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--gray-800);
  color: var(--gray-400);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.footer .social-link:hover {
  background: var(--primary-blue);
  color: var(--white);
  transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-xl);
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .feature-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: 1rem;
    --section-padding: 4rem 0;
  }
  
  .nav-menu {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background: var(--white);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: var(--spacing-xl);
    transition: left var(--transition-normal);
    box-shadow: var(--shadow-lg);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .nav-toggle.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .nav-toggle.active .bar:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
  
  .title-main {
    font-size: 2.5rem;
  }
  
  .title-sub {
    font-size: 1.25rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .image-container {
    width: 250px;
    height: 250px;
  }
  
  .expertise-grid {
    grid-template-columns: 1fr;
  }
  
  .topics-grid {
    grid-template-columns: 1fr;
  }
  
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 100px 0 var(--spacing-xl) 0;
  }
  
  .title-main {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .expertise-card,
  .contact-form {
    padding: var(--spacing-lg);
  }
  
  .btn {
    padding: 0.875rem 1.5rem;
  }
}