:root {
  /* Core Colors */
  --color-primary: #2563eb;
  --color-primary-dark: #1e40af;
  --color-primary-light: #60a5fa;
  --color-secondary: #0f172a;
  
  /* Text Colors */
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-text-lighter: #94a3b8;
  
  /* Background Colors */
  --color-background: #ffffff;
  --color-background-alt: #f8fafc;
  --color-background-dark: #f1f5f9;
  
  /* Accent Colors */
  --color-accent-success: #059669;
  --color-accent-warning: #eab308;
  --color-accent-danger: #dc2626;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  --gradient-hero: linear-gradient(135deg, #1e40af, #3b82f6);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Layout */
  --max-width: 1200px;
  --header-height: 5rem;
  
  /* Typography */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  
  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--color-text);
  line-height: 1.6;
  background: var(--color-background);
}

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

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }

p {
  margin-bottom: 1.5rem;
}

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header & Navigation */
header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow-sm);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  transition: all var(--transition-normal);
  height: var(--header-height);
}

header.scrolled {
  --header-height: 4rem;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  transition: height var(--transition-normal);
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.logo::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-normal);
}

.logo:hover::after {
  width: 100%;
}

.nav-links {
  display: flex;
  gap: var(--spacing-xl);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--font-size-base);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--spacing-sm);
  right: var(--spacing-sm);
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transform: scaleX(0);
  transition: all var(--transition-normal);
}

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

.nav-links a:hover::after {
  opacity: 1;
  transform: scaleX(1);
}

/* Hero Section */
.hero {
  padding: var(--spacing-2xl) 0;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  min-height: 80vh;
  display: flex;
  align-items: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.1;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  right: 0;
  height: 50px;
  background: var(--color-background);
  clip-path: polygon(0 100%, 100% 100%, 100% 0, 0 100%);
}

.hero .container {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero h2 {
  font-size: var(--font-size-4xl);
  color: white;
  margin-bottom: var(--spacing-lg);
  line-height: var(--line-height-tight);
  font-weight: 800;
  letter-spacing: -0.025em;
  text-shadow: var(--shadow-sm);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero p {
  font-size: var(--font-size-xl);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: var(--line-height-relaxed);
}

.hero .cta-button {
  font-size: var(--font-size-lg);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-full);
  background: white;
  color: var(--color-primary);
  font-weight: 600;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-lg);
}

.hero .cta-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  background: var(--color-background-alt);
}

@media (max-width: 768px) {
  .hero {
    min-height: 60vh;
    padding: var(--spacing-xl) 0;
  }

  .hero h2 {
    font-size: var(--font-size-3xl);
  }

  .hero p {
    font-size: var(--font-size-lg);
  }
}

/* Section Styles */
section {
  padding: var(--spacing-2xl) 0;
  position: relative;
}

section h3 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-xl);
  text-align: center;
  color: var(--color-secondary);
  position: relative;
  padding-bottom: var(--spacing-md);
}

section h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

/* Cards Grid */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

/* Card Styles */
.card {
  background: var(--color-background);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  border: 1px solid rgba(0, 0, 0, 0.05);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  will-change: transform;
}

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

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

.card:hover::before {
  opacity: 1;
}

.card h4 {
  font-size: var(--font-size-xl);
  color: var(--color-secondary);
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-tight);
}

.card p {
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

/* About Section */
.about {
  background: var(--color-background-alt);
  position: relative;
  overflow: hidden;
}

.about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(0, 0, 0, 0.05), transparent);
}

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

.about-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.about-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
}

.headshot {
  width: 100%;
  height: auto;
  display: block;
  transform: scale(1.01);
  transition: transform var(--transition-normal);
}

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

.about-text h3 {
  text-align: left;
  margin-bottom: var(--spacing-md);
}

.about-text h3::after {
  left: 0;
  transform: none;
}

.about-text p {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
}

@media (max-width: 768px) {
  section {
    padding: var(--spacing-xl) 0;
  }

  section h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
  }

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

  .about-image {
    max-width: 300px;
    margin: 0 auto;
  }
}

/* Footer */
footer {
  background: var(--color-primary);
  color: white;
  padding: 3rem 0;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

footer a {
  color: white;
  text-decoration: none;
  opacity: 0.8;
  transition: opacity 0.2s;
}

footer a:hover {
  opacity: 1;
}

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

.animate-in {
  opacity: 0;
  will-change: transform, opacity;
  animation: fadeIn 0.6s ease-out forwards;
}

/* Services Page Specific */
.services-detailed {
  background: var(--color-background-alt);
}

.service-item {
  padding: 2rem 0;
  border-bottom: 1px solid rgba(0,0,0,0.1);
}

.service-item:last-child {
  border-bottom: none;
}

.service-item h3 {
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.service-item ul {
  list-style: none;
  margin: 1.5rem 0;
  padding: 0;
}

.service-item ul li {
  margin: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
}

.service-item ul li:before {
  content: "•";
  color: var(--color-accent);
  position: absolute;
  left: 0;
}

/* Contact Page Specific */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  margin: 2rem 0;
}

.contact-methods {
  margin: 2rem 0;
}

.contact-method {
  margin: 1.5rem 0;
}

.contact-method h4 {
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--color-text);
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

/* Placeholder Image */
.placeholder-image {
  width: 100%;
  padding-bottom: 100%;
  background: var(--color-background-alt);
  border-radius: 12px;
}

/* Additional Responsive Styles */
@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .service-item {
    padding: 1.5rem 0;
  }
  
  .contact-methods {
    margin: 1.5rem 0;
  }
}

/* CTA Section */
.cta-section {
  background: var(--color-primary);
  color: white;
  text-align: center;
  padding: 4rem 0;
}

.cta-section h3 {
  color: white;
}

.cta-section .cta-button {
  background: white;
  color: var(--color-primary);
  margin-top: 2rem;
}

.cta-section .cta-button:hover {
  background: var(--color-background-alt);
}

/* Quick Contact Section */
.quick-contact {
  background: var(--color-background-alt);
  padding: 4rem 0;
}

.quick-contact .cards {
  margin-top: 0;
}

/* Additional Animation Classes */
.fade-in {
  opacity: 0;
  animation: fadeIn 0.6s ease-out forwards;
}

.slide-up {
  opacity: 0;
  transform: translateY(20px);
  animation: slideUp 0.6s ease-out forwards;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Additional Utility Classes */
.text-center {
  text-align: center;
}

.mt-4 {
  margin-top: 2rem;
}

.mb-4 {
  margin-bottom: 2rem;
}

.py-4 {
  padding-top: 2rem;
  padding-bottom: 2rem;
}

/* Form Styles */
.form-status {
  margin: 1rem 0;
  padding: 1rem;
  border-radius: 6px;
}

.form-status .success {
  color: #047857;
  background: #ecfdf5;
  padding: 1rem;
  border-radius: 6px;
  display: none;
}

.form-status .error {
  color: #dc2626;
  background: #fef2f2;
  padding: 1rem;
  border-radius: 6px;
  display: none;
}

.form-status.success-visible .success {
  display: block;
}

.form-status.error-visible .error {
  display: block;
}

.form-group button[type="submit"] {
  position: relative;
}

.form-group button[type="submit"].loading {
  opacity: 0.7;
  cursor: not-allowed;
}

.form-group button[type="submit"].loading::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  top: 50%;
  right: 1rem;
  transform: translateY(-50%);
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 1s infinite linear;
}

@keyframes spin {
  to {
    transform: translateY(-50%) rotate(360deg);
  }
}

/* Form Success Message */
.submission-success {
  text-align: center;
  padding: 3rem;
  background: var(--color-background-alt);
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  margin: 2rem 0;
}

.submission-success h3 {
  color: #047857;
  margin-bottom: 1rem;
}

.submission-success p {
  color: var(--color-text);
  font-size: 1.1rem;
  line-height: 1.6;
}

.submission-success .cta-button {
  margin-top: 1.5rem;
  background: var(--color-accent);
}

/* Mobile Navigation */
.mobile-menu-button {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-normal);
}

.mobile-menu-button:hover {
  background-color: var(--color-background-alt);
}

.hamburger {
  position: relative;
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  transition: all var(--transition-normal);
  margin: 0 auto;
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  transition: all var(--transition-normal);
}

.hamburger::before {
  top: -8px;
}

.hamburger::after {
  bottom: -8px;
}

.mobile-menu-button.active .hamburger {
  background: transparent;
}

.mobile-menu-button.active .hamburger::before {
  top: 0;
  transform: rotate(45deg);
}

.mobile-menu-button.active .hamburger::after {
  bottom: 0;
  transform: rotate(-45deg);
}

@media (max-width: 768px) {
  .mobile-menu-button {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: var(--spacing-lg);
    flex-direction: column;
    gap: var(--spacing-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-normal), opacity var(--transition-normal), visibility var(--transition-normal);
    box-shadow: var(--shadow-lg);
    will-change: transform, opacity;
  }

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

  .nav-links a {
    display: block;
    padding: var(--spacing-sm);
    text-align: center;
    font-size: var(--font-size-lg);
  }
}

/* Focus Styles */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

.nav-links a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-md);
}

.cta-button:focus-visible {
  outline: 2px solid white;
  outline-offset: 2px;
}

.card:focus-within {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.mobile-menu-button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  background-color: var(--color-background-alt);
}

/* Skip to main content link */
.skip-to-main {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  z-index: 1001;
  transition: top var(--transition-normal);
}

.skip-to-main:focus {
  top: 0;
}