/* ============================================
   StepStyle Shoes - Production Stylesheet
   Mobile-First Responsive Design
   ============================================ */

/* CSS Custom Properties - Design Tokens */
:root {
  /* Color Palette - Professional Shoe Retail Theme */
  --color-primary: #2c3e50;
  --color-primary-light: #34495e;
  --color-primary-dark: #1a252f;
  --color-secondary: #e67e22;
  --color-secondary-light: #f39c12;
  --color-secondary-dark: #d35400;
  --color-accent: #c0392b;
  --color-background: #ffffff;
  --color-surface: #f8f9fa;
  --color-text-primary: #2c3e50;
  --color-text-secondary: #7f8c8d;
  --color-text-light: #95a5a6;
  --color-border: #e0e0e0;
  --color-success: #27ae60;
  --color-error: #e74c3c;

  /* Typography */
  --font-family-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-heading: Georgia, 'Times New Roman', serif;
  --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;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

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

  /* Layout */
  --container-max-width: 1200px;
  --container-padding: var(--space-md);
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* 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), 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);

  /* Z-index layers */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --color-background: #1a1a1a;
    --color-surface: #2d2d2d;
    --color-text-primary: #f8f9fa;
    --color-text-secondary: #b0b0b0;
    --color-text-light: #8a8a8a;
    --color-border: #404040;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --color-primary: #000000;
    --color-secondary: #ff6600;
    --color-text-primary: #000000;
  }
}

/* ============================================
   Base Styles & Reset
   ============================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  min-height: 100vh;
}

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

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

a:hover {
  color: var(--color-secondary);
}

a:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
  border-radius: var(--border-radius-sm);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul {
  list-style: none;
}

/* Skip Link for Accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: var(--space-sm) var(--space-md);
  text-decoration: none;
  z-index: var(--z-tooltip);
  border-radius: 0 0 var(--border-radius-sm) 0;
}

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

/* ============================================
   Header & Navigation
   ============================================ */

header {
  background-color: var(--color-background);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  border-bottom: 1px solid var(--color-border);
}

.header-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--container-padding);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-lg);
}

.logo h1 {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  letter-spacing: -0.5px;
}

nav ul {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

nav a {
  font-weight: var(--font-weight-medium);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-base);
  position: relative;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--color-secondary);
  transform: translateX(-50%);
  transition: width var(--transition-base);
}

nav a:hover::after,
nav a[aria-current="page"]::after {
  width: 80%;
}

nav a:hover {
  background-color: var(--color-surface);
  color: var(--color-secondary);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  min-height: 500px;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  padding: var(--space-2xl) var(--container-padding);
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-background) 100%);
}

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-lg);
  max-width: 600px;
}

.hero h2 {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-2xl);
  background-color: var(--color-secondary);
  color: white;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-lg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  align-self: flex-start;
}

.cta-button:hover {
  background-color: var(--color-secondary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: white;
}

.cta-button:active {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

.hero-image {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-xl);
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

/* ============================================
   Section Containers
   ============================================ */

section {
  padding: var(--space-3xl) var(--container-padding);
}

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

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-header h2 {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.section-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   Featured Products Section
   ============================================ */

.featured-products {
  background-color: var(--color-surface);
}

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

.product-card {
  background-color: var(--color-background);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

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

.product-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  background-color: var(--color-surface);
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.product-card:hover .product-image img {
  transform: scale(1.1);
}

.product-info {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  flex-grow: 1;
}

.product-info h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
}

.product-description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  flex-grow: 1;
}

.product-price {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-secondary);
  margin-top: var(--space-sm);
}

/* ============================================
   Business Info Section
   ============================================ */

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

.info-card {
  background-color: var(--color-background);
  padding: var(--space-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  border-left: 4px solid var(--color-secondary);
  transition: all var(--transition-base);
}

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

.info-card h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.info-card p {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ============================================
   Contact Section
   ============================================ */

.contact-section {
  background-color: var(--color-surface);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

.contact-info h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  margin-top: var(--space-xl);
}

.contact-info h3:first-child {
  margin-top: 0;
}

.contact-info address {
  font-style: normal;
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.contact-info dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-sm) var(--space-md);
  color: var(--color-text-secondary);
}

.contact-info dt {
  font-weight: var(--font-weight-medium);
}

.contact-info ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.contact-info a {
  color: var(--color-secondary);
  transition: color var(--transition-base);
}

.contact-info a:hover {
  color: var(--color-secondary-dark);
  text-decoration: underline;
}

/* Contact Form */
.contact-form-wrapper h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
}

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

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form-field label {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.form-field label span {
  color: var(--color-error);
}

.form-field input,
.form-field textarea {
  padding: var(--space-md);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius-md);
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
  background-color: var(--color-background);
  color: var(--color-text-primary);
}

.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(230, 126, 34, 0.1);
}

.form-field input:invalid:not(:placeholder-shown),
.form-field textarea:invalid:not(:placeholder-shown) {
  border-color: var(--color-error);
}

.contact-form button[type="submit"] {
  padding: var(--space-md) var(--space-xl);
  background-color: var(--color-secondary);
  color: white;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-base);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  align-self: flex-start;
}

.contact-form button[type="submit"]:hover {
  background-color: var(--color-secondary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.contact-form button[type="submit"]:active {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

/* ============================================
   Footer
   ============================================ */

footer {
  background-color: var(--color-primary);
  color: white;
  padding: var(--space-3xl) var(--container-padding) var(--space-xl);
}

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

.footer-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-section h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-md);
  color: white;
}

.footer-section p {
  color: rgba(255, 255, 255, 0.8);
  line-height: var(--line-height-relaxed);
}

.footer-section ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-base);
}

.footer-section a:hover {
  color: var(--color-secondary-light);
}

.social-links {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
  text-align: center;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
}

.footer-bottom ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
}

.footer-bottom a:hover {
  color: var(--color-secondary-light);
}

/* ============================================
   Responsive Design - Tablet (768px)
   ============================================ */

@media (min-width: 768px) {
  :root {
    --container-padding: var(--space-xl);
  }

  .header-container {
    padding: var(--space-lg) var(--container-padding);
  }

  nav ul {
    gap: var(--space-lg);
  }

  .hero {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    min-height: 600px;
    padding: var(--space-3xl) var(--container-padding);
  }

  .hero h2 {
    font-size: var(--font-size-4xl);
  }

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

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

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

  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* ============================================
   Responsive Design - Desktop (1024px)
   ============================================ */

@media (min-width: 1024px) {
  :root {
    --font-size-3xl: 2.25rem;
    --font-size-4xl: 3rem;
  }

  .products-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .info-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-content {
    grid-template-columns: repeat(4, 1fr);
  }

  .hero {
    min-height: 700px;
  }
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
  header,
  nav,
  .cta-button,
  .contact-form,
  footer {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .product-card,
  .info-card {
    page-break-inside: avoid;
    box-shadow: none;
    border: 1px solid #000;
  }

  a {
    text-decoration: underline;
  }

  a[href^="http"]:after {
    content: " (" attr(href) ")";
  }
}