/* ============================================
   FoodEase Landing Page - Production Styles
   Mobile-First Responsive Design System
   ============================================ */

/* ============================================
   CSS Reset & Normalize
   ============================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

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

body {
  min-height: 100vh;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

a {
  text-decoration: none;
  color: inherit;
}

ul,
ol {
  list-style: none;
}

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */

:root {
  /* Colors - Primary Palette */
  --color-primary-50: hsl(14, 100%, 97%);
  --color-primary-100: hsl(14, 100%, 92%);
  --color-primary-200: hsl(14, 100%, 85%);
  --color-primary-300: hsl(14, 100%, 75%);
  --color-primary-400: hsl(14, 100%, 65%);
  --color-primary-500: hsl(14, 100%, 58%);
  --color-primary-600: hsl(14, 90%, 50%);
  --color-primary-700: hsl(14, 85%, 42%);
  --color-primary-800: hsl(14, 80%, 35%);
  --color-primary-900: hsl(14, 75%, 28%);

  /* Colors - Neutral Palette */
  --color-neutral-50: hsl(0, 0%, 98%);
  --color-neutral-100: hsl(0, 0%, 95%);
  --color-neutral-200: hsl(0, 0%, 90%);
  --color-neutral-300: hsl(0, 0%, 80%);
  --color-neutral-400: hsl(0, 0%, 65%);
  --color-neutral-500: hsl(0, 0%, 50%);
  --color-neutral-600: hsl(0, 0%, 40%);
  --color-neutral-700: hsl(0, 0%, 30%);
  --color-neutral-800: hsl(0, 0%, 20%);
  --color-neutral-900: hsl(0, 0%, 10%);

  /* Colors - Semantic */
  --color-success: hsl(142, 71%, 45%);
  --color-warning: hsl(38, 92%, 50%);
  --color-error: hsl(0, 84%, 60%);
  --color-info: hsl(199, 89%, 48%);

  /* Colors - Surface */
  --color-background: hsl(0, 0%, 100%);
  --color-surface: hsl(0, 0%, 98%);
  --color-text-primary: hsl(0, 0%, 10%);
  --color-text-secondary: hsl(0, 0%, 40%);
  --color-text-on-primary: hsl(0, 0%, 100%);
  --color-border: hsl(0, 0%, 90%);

  /* Typography - Font Families */
  --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Typography - Fluid Font Sizes */
  --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --font-size-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --font-size-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --font-size-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
  --font-size-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --font-size-2xl: clamp(1.5rem, 1.3rem + 1vw, 1.875rem);
  --font-size-3xl: clamp(1.875rem, 1.6rem + 1.375vw, 2.25rem);
  --font-size-4xl: clamp(2.25rem, 1.9rem + 1.75vw, 3rem);
  --font-size-5xl: clamp(3rem, 2.5rem + 2.5vw, 3.75rem);

  /* Typography - Font Weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Typography - Line Heights */
  --line-height-tight: 1.2;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;

  /* Spacing - Fluid Scale */
  --space-xs: clamp(0.25rem, 0.2rem + 0.25vw, 0.5rem);
  --space-sm: clamp(0.5rem, 0.4rem + 0.5vw, 0.75rem);
  --space-md: clamp(0.75rem, 0.6rem + 0.75vw, 1rem);
  --space-lg: clamp(1rem, 0.8rem + 1vw, 1.5rem);
  --space-xl: clamp(1.5rem, 1.2rem + 1.5vw, 2rem);
  --space-2xl: clamp(2rem, 1.6rem + 2vw, 3rem);
  --space-3xl: clamp(3rem, 2.4rem + 3vw, 4rem);
  --space-4xl: clamp(4rem, 3.2rem + 4vw, 6rem);

  /* Layout */
  --container-max-width: 1280px;
  --container-padding: var(--space-lg);
  --content-max-width: 65ch;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* 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);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

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

  /* Breakpoints (for reference in media queries) */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
}

/* ============================================
   Base Typography
   ============================================ */

body {
  font-family: var(--font-family-base);
  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);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}

h1 {
  font-size: var(--font-size-4xl);
}

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

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

p {
  margin-bottom: var(--space-md);
}

strong {
  font-weight: var(--font-weight-bold);
}

/* ============================================
   Accessibility
   ============================================ */

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-md);
  z-index: var(--z-tooltip);
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-primary-600);
  color: var(--color-text-on-primary);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-md);
  outline: 2px solid var(--color-primary-600);
  outline-offset: 2px;
}

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

:focus-visible {
  outline: 2px solid var(--color-primary-600);
  outline-offset: 2px;
}

/* ============================================
   Container & Layout Utilities
   ============================================ */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* ============================================
   Button Components
   ============================================ */

.btn-primary,
.btn-secondary,
.btn-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-primary-600);
  color: var(--color-text-on-primary);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--color-primary-700);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary-600);
  border: 2px solid var(--color-primary-600);
}

.btn-secondary:hover {
  background-color: var(--color-primary-50);
  border-color: var(--color-primary-700);
  color: var(--color-primary-700);
}

.btn-link {
  padding: 0;
  color: var(--color-primary-600);
  font-weight: var(--font-weight-medium);
}

.btn-link:hover {
  color: var(--color-primary-700);
  text-decoration: underline;
}

/* ============================================
   Header
   ============================================ */

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

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

.logo img {
  height: 40px;
  width: auto;
}

header nav {
  display: none;
}

header nav ul {
  display: flex;
  gap: var(--space-xl);
}

header nav a {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

header nav a:hover {
  color: var(--color-primary-600);
}

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

.header-actions .btn-secondary,
.header-actions .btn-primary {
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-size-sm);
}

@media (min-width: 768px) {
  header nav {
    display: block;
  }

  .logo img {
    height: 50px;
  }
}

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

.hero {
  display: grid;
  gap: var(--space-2xl);
  padding-block: var(--space-3xl);
  padding-inline: var(--container-padding);
  max-width: var(--container-max-width);
  margin-inline: auto;
}

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

.hero h1 {
  font-size: var(--font-size-3xl);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-md);
}

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

.hero-search {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  width: 100%;
}

.hero-search input {
  flex: 1;
  padding: var(--space-md) var(--space-lg);
  font-size: var(--font-size-base);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.hero-search input:focus {
  outline: none;
  border-color: var(--color-primary-600);
}

.hero-search button {
  width: 100%;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: var(--space-lg);
  padding-block-start: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  text-align: center;
}

.stat-item strong {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary-600);
}

.stat-item span {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.hero-image {
  display: none;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

@media (min-width: 768px) {
  .hero {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    padding-block: var(--space-4xl);
  }

  .hero h1 {
    font-size: var(--font-size-4xl);
  }

  .hero-search {
    flex-direction: row;
  }

  .hero-search button {
    width: auto;
  }

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

  .stat-item {
    text-align: left;
  }

  .hero-image {
    display: block;
  }
}

/* ============================================
   Section Headers
   ============================================ */

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 60ch;
  margin-inline: auto;
}

/* ============================================
   Services Section
   ============================================ */

.services {
  padding-block: var(--space-4xl);
  background-color: var(--color-surface);
}

.services-grid {
  display: grid;
  gap: var(--space-2xl);
}

.service-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  padding: var(--space-2xl);
  background-color: var(--color-background);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

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

.service-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background-color: var(--color-primary-50);
  border-radius: var(--radius-lg);
}

.service-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}

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

@media (min-width: 640px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ============================================
   Cuisines Section
   ============================================ */

.cuisines {
  padding-block: var(--space-4xl);
}

.cuisines-grid {
  display: grid;
  gap: var(--space-2xl);
}

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

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

.cuisine-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.cuisine-card:hover img {
  transform: scale(1.05);
}

.cuisine-card h3 {
  padding-inline: var(--space-lg);
  padding-block-start: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.cuisine-card p {
  padding-inline: var(--space-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.cuisine-card .btn-link {
  padding-inline: var(--space-lg);
  padding-block-end: var(--space-lg);
  align-self: flex-start;
}

@media (min-width: 640px) {
  .cuisines-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .cuisines-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================
   Delivery Areas Section
   ============================================ */

.delivery-areas {
  padding-block: var(--space-4xl);
  background-color: var(--color-surface);
}

.areas-content {
  display: grid;
  gap: var(--space-3xl);
}

.areas-list h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-xl);
}

.areas-list ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.areas-list li {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-lg);
  background-color: var(--color-background);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary-600);
}

.areas-list strong {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
}

.areas-list span {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.areas-note {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background-color: var(--color-primary-50);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary-600);
}

.areas-note a {
  color: var(--color-primary-600);
  font-weight: var(--font-weight-semibold);
  text-decoration: underline;
}

.areas-map img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

@media (min-width: 1024px) {
  .areas-content {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

/* ============================================
   Testimonials Section
   ============================================ */

.testimonials {
  padding-block: var(--space-4xl);
}

.testimonials-carousel {
  display: grid;
  gap: var(--space-2xl);
}

.testimonial-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  padding: var(--space-2xl);
  background-color: var(--color-background);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-xl);
}

.testimonial-rating {
  font-size: var(--font-size-xl);
  color: var(--color-warning);
}

.testimonial-card blockquote {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  font-style: italic;
}

.testimonial-card blockquote p {
  margin-bottom: 0;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.testimonial-author img {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

.testimonial-author div {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.testimonial-author cite {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  font-style: normal;
  color: var(--color-text-primary);
}

.testimonial-author span {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

@media (min-width: 768px) {
  .testimonials-carousel {
    grid-template-columns: repeat(3, 1fr);
  }
}

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

.contact {
  padding-block: var(--space-4xl);
  background-color: var(--color-surface);
}

.contact-content {
  display: grid;
  gap: var(--space-3xl);
}

.contact-info h3,
.contact-form-wrapper h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-xl);
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
}

.contact-item strong {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
}

.contact-item a {
  color: var(--color-primary-600);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
}

.contact-item a:hover {
  color: var(--color-primary-700);
  text-decoration: underline;
}

.contact-item address {
  font-style: normal;
  color: var(--color-text-primary);
}

.social-links {
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.social-links h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-md);
}

.social-links ul {
  display: flex;
  gap: var(--space-lg);
}

.social-links a {
  color: var(--color-primary-600);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
}

.social-links a:hover {
  color: var(--color-primary-700);
  text-decoration: underline;
}

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

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

.form-group label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

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

.form-group input,
.form-group textarea {
  padding: var(--space-md);
  font-size: var(--font-size-base);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary-600);
}

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

.contact-form button {
  align-self: flex-start;
}

@media (min-width: 1024px) {
  .contact-content {
    grid-template-columns: 1fr 1.5fr;
  }
}

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

.site-footer {
  padding-block: var(--space-4xl);
  background-color: var(--color-neutral-900);
  color: var(--color-neutral-100);
}

.footer-content {
  display: grid;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-section h3 {
  font-size: var(--font-size-xl);
  color: var(--color-background);
  margin-bottom: var(--space-md);
}

.footer-section h4 {
  font-size: var(--font-size-lg);
  color: var(--color-background);
  margin-bottom: var(--space-md);
}

.footer-section p {
  color: var(--color-neutral-300);
  line-height: var(--line-height-relaxed);
}

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

.footer-section a {
  color: var(--color-neutral-300);
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: var(--color-primary-400);
}

.footer-bottom {
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--color-neutral-700);
  text-align: center;
  color: var(--color-neutral-400);
}

.footer-bottom p {
  margin-bottom: var(--space-sm);
}

@media (min-width: 640px) {
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-content {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}