/* Lakebound Labs Website - Main Stylesheet */

:root {
  /* Colors */
  --color-primary: #1a5276;
  --color-primary-dark: #0e3a56;
  --color-primary-light: #2980b9;
  --color-secondary: #2ecc71;
  --color-secondary-dark: #27ae60;
  --color-accent: #d32f2f;
  --color-text: #2c3e50;
  --color-text-light: #5d6d7e;
  --color-background: #ffffff;
  --color-background-alt: #f8f9fa;
  --color-border: #dce1e5;
  --color-error: #d32f2f;
  --color-success: #1a7a42;
  --color-white: #ffffff;

  /* Fonts */
  --font-family-base: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-family-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-size-4xl: 3rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  --line-height-base: 1.6;
  --line-height-heading: 1.2;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 64px;
  --border-radius: 8px;
  --border-radius-sm: 4px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
}

/* Global Focus Indicator - ensures all focusable elements have a visible focus style */
:focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 2px;
}

/* Reset and Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  overflow-x: hidden;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-background);
  padding-top: var(--nav-height);
  overflow-x: hidden;
  min-width: 320px;
  max-width: 2560px;
  margin-left: auto;
  margin-right: auto;
}

/* Responsive images and media */
img,
video,
svg,
picture,
embed,
object {
  max-width: 100%;
  height: auto;
}

img {
  display: block;
}

/* Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  height: var(--nav-height);
}

header nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xl);
  max-width: var(--max-width);
  margin: 0 auto;
  height: 100%;
  padding: 0 var(--spacing-lg);
}

/* Hamburger Button */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.hamburger-line {
  display: block;
  width: 24px;
  height: 3px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger:focus {
  outline: 2px solid var(--color-white);
  outline-offset: 2px;
}

/* Nav Links Container */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-links a {
  color: var(--color-white);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-lg);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  transition: background-color var(--transition-fast);
}

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

.nav-links a:focus {
  outline: 2px solid var(--color-white);
  outline-offset: 2px;
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
    position: absolute;
    right: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
  }

  .nav-links {
    display: none;
    flex-direction: column;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-primary);
    padding: var(--spacing-2xl) var(--spacing-lg);
    gap: var(--spacing-lg);
    align-items: center;
    justify-content: flex-start;
    z-index: 999;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    font-size: var(--font-size-xl);
    padding: var(--spacing-md) var(--spacing-xl);
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  header nav {
    position: relative;
  }
}

/* Desktop: hide hamburger, show nav links */
@media (min-width: 769px) {
  .hamburger {
    display: none;
  }

  .nav-links {
    display: flex;
  }
}



/* Hero Section */
#hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-xl);
  min-height: 60vh;
  background-image: linear-gradient(rgba(0, 0, 0, 0.55), rgba(0, 0, 0, 0.55)), url('../lkaihoi-duluth-6248637.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

@media (min-width: 768px) {
  #hero {
    min-height: 100vh;
  }
}

#hero h1 {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-heading);
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
  #hero h1 {
    font-size: var(--font-size-4xl);
  }
}

.hero-tagline {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  margin-bottom: var(--spacing-xl);
}

.hero-cta {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  background-color: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
  border-radius: var(--border-radius);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  transition: background-color var(--transition-base);
  min-width: 44px;
  min-height: 44px;
}

.hero-cta:hover {
  background-color: var(--color-primary-dark);
}

.hero-cta:focus {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 2px;
}

/* Services Section */
#services {
  padding: var(--spacing-4xl) var(--spacing-xl);
  max-width: var(--max-width);
  margin: 0 auto;
}

#services h2 {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  text-align: center;
  margin-bottom: var(--spacing-3xl);
  line-height: var(--line-height-heading);
}

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

.service-card {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-2xl);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.service-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.service-icon {
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
}

.service-card h3 {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-heading);
}

.service-card p {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  line-height: var(--line-height-base);
  margin: 0;
}

/* Desktop layout: 2-column grid for services */
@media (min-width: 769px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Contact Section */
#contact {
  padding: var(--spacing-4xl) 0;
  background-color: var(--color-background-alt);
}

#contact h2 {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-heading);
  color: var(--color-primary);
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.contact-company-name {
  text-align: center;
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
}

.contact-email {
  text-align: center;
  font-size: var(--font-size-xl);
}

.contact-email a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  transition: color var(--transition-fast);
}

.contact-email a:hover {
  color: var(--color-primary-light);
  text-decoration: underline;
}

.contact-email a:focus {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 2px;
}

/* Contact Form */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
  font-size: var(--font-size-base);
}

.form-group input,
.form-group textarea {
  display: block;
  width: 100%;
  padding: var(--spacing-md);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 44px;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(41, 128, 185, 0.2);
}

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

.form-group input.error,
.form-group textarea.error {
  border-color: var(--color-error);
}

.form-group .error-message {
  display: block;
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
}

/* Button Styles */
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: background-color var(--transition-base), transform var(--transition-fast);
  min-width: 44px;
  min-height: 44px;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

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

.btn-primary:focus {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 2px;
}

/* Success Message */
.form-success {
  display: none;
  text-align: center;
  padding: var(--spacing-lg);
  background-color: rgba(26, 122, 66, 0.1);
  border: 1px solid var(--color-success);
  border-radius: var(--border-radius);
  color: var(--color-success);
  font-weight: var(--font-weight-medium);
  margin-top: var(--spacing-lg);
}

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

/* Mobile touch targets */
@media (max-width: 768px) {
  .form-group input,
  .form-group textarea {
    min-height: 44px;
    padding: var(--spacing-md);
  }

  .btn {
    min-height: 44px;
    min-width: 44px;
    padding: var(--spacing-md) var(--spacing-xl);
  }
}

/* Footer */
footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  width: 100%;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--color-white);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  transition: background-color var(--transition-fast);
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.footer-nav a:hover {
  background-color: var(--color-primary-light);
}

.footer-nav a:focus {
  outline: 2px solid var(--color-white);
  outline-offset: 2px;
}

.footer-copyright {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.85);
}

/* ===== Responsive Design: Mobile-first adjustments ===== */

/* Ensure all sections constrain content within viewport */
main,
section,
header,
footer {
  max-width: 100%;
  overflow-x: hidden;
}

/* Mobile layout (≤768px): single-column, stacked content */
@media (max-width: 768px) {
  #hero {
    padding: var(--spacing-xl) var(--spacing-lg);
  }

  #hero h1 {
    font-size: var(--font-size-2xl);
  }

  #services {
    padding: var(--spacing-2xl) var(--spacing-lg);
  }

  #services h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-xl);
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    padding: var(--spacing-xl);
  }

  #contact {
    padding: var(--spacing-2xl) var(--spacing-lg);
  }

  .container {
    padding: 0 var(--spacing-md);
  }
}

/* Large desktop (>1200px): maintain max-width centering */
@media (min-width: 1201px) {
  #services,
  .container {
    max-width: var(--max-width);
    margin-left: auto;
    margin-right: auto;
  }
}