/* ----------------------------------------------------------
   Secorio Landing Page — style.css
   Mobile-first responsive layout (Story 4.6)
   Breakpoints: 320px (base) ? 768px (tablet) ? 1280px (desktop)
---------------------------------------------------------- */

/* -- CSS Custom Properties -- */
:root {
  --color-primary: #333333;
  --color-secondary: #ffffff;
  --font-size-body: 1rem;
  --spacing-unit: 1rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: var(--font-size-body);
  color: #333;
  background: #fff;
  line-height: 1.6;
}

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

/* -- Loading state -- */
body.is-loading main {
  opacity: 0.6;
  transition: opacity 0.3s ease;
}

/* -- Utility -- */
.loading-text,
.empty-text {
  color: #999;
  font-style: italic;
}

/* -- Header -- */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-primary);
  color: var(--color-secondary);
  padding: calc(var(--spacing-unit) * 0.75) var(--spacing-unit);
  display: flex;
  align-items: center;
  gap: var(--spacing-unit);
}

#logo {
  height: 40px;
  width: auto;
  vertical-align: middle;
}

header nav {
  display: flex;
  gap: var(--spacing-unit);
  flex-wrap: wrap;
}

header nav a {
  color: var(--color-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  min-height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
}

header nav a:hover {
  text-decoration: underline;
}

header nav a:focus {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

/* -- Sections base -- */
section {
  padding: calc(var(--spacing-unit) * 2.5) var(--spacing-unit);
}

section h2 {
  font-size: 1.4rem;
  margin-bottom: var(--spacing-unit);
  color: var(--color-primary);
}

/* -- Hero section -- */
#hero {
  padding-top: 0;
}

.hero-image-bg {
  width: 100%;
  min-height: 220px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-color: #e8e8e8;
}

#hero h1 {
  font-size: 1.6rem;
  padding: calc(var(--spacing-unit) * 1.5) var(--spacing-unit) 0;
}

#hero p {
  padding: calc(var(--spacing-unit) * 0.5) var(--spacing-unit) calc(var(--spacing-unit) * 1.5);
  color: #555;
}

/* -- About section -- */
#about {
  background: #f9f9f9;
}

#about-description {
  max-width: 65ch;
  color: #444;
}

/* -- Menu section -- */
#menu {
  background: #fafafa;
}

.menu-category {
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.menu-category-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  padding-bottom: calc(var(--spacing-unit) * 0.5);
  border-bottom: 2px solid var(--color-primary);
  margin-bottom: var(--spacing-unit);
}

.menu-items {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-unit);
}

.menu-item {
  display: flex;
  gap: var(--spacing-unit);
  align-items: flex-start;
}

.menu-item-image {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 4px;
  flex-shrink: 0;
}

.menu-item-info {
  flex: 1;
  min-width: 0;
}

.menu-item-name {
  display: block;
  font-weight: 600;
}

.menu-item-price {
  display: block;
  color: var(--color-primary);
  font-weight: 500;
  margin-top: 2px;
}

.menu-item-description {
  font-size: 0.875rem;
  color: #666;
  margin-top: 4px;
}

/* -- Gallery section -- */
#gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: calc(var(--spacing-unit) * 0.5);
}

.gallery-item {
  aspect-ratio: 1 / 1;
  overflow: hidden;
}

.gallery-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.2s ease;
}

.gallery-image:hover {
  transform: scale(1.03);
}

/* -- Contact section -- */
#contact {
  background: #f9f9f9;
}

.contact-phone,
.contact-email {
  font-size: 1.1rem;
  margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.contact-phone a,
.contact-email a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.contact-phone a:hover,
.contact-email a:hover {
  text-decoration: underline;
}

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

.contact-address,
.contact-hours {
  color: #444;
  margin-bottom: calc(var(--spacing-unit) * 0.5);
  line-height: 1.5;
}

.contact-map {
  margin-top: var(--spacing-unit);
  border-radius: 4px;
  overflow: hidden;
}

.contact-map iframe {
  display: block;
}

/* -- Footer -- */
footer {
  background: var(--color-primary);
  color: var(--color-secondary);
  text-align: center;
  padding: calc(var(--spacing-unit) * 1.5) var(--spacing-unit);
  font-size: 0.875rem;
}

/* ----------------------------------------------------------
   TABLET — min-width: 768px
---------------------------------------------------------- */
@media (min-width: 768px) {
  section {
    padding: calc(var(--spacing-unit) * 3) calc(var(--spacing-unit) * 2);
  }

  section h2 {
    font-size: 1.6rem;
  }

  .hero-image-bg {
    min-height: 320px;
  }

  #hero h1 {
    font-size: 2rem;
    padding-left: calc(var(--spacing-unit) * 2);
    padding-right: calc(var(--spacing-unit) * 2);
  }

  #hero p {
    padding-left: calc(var(--spacing-unit) * 2);
    padding-right: calc(var(--spacing-unit) * 2);
  }

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

  #gallery-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-unit);
  }

  #contact-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-unit);
    align-items: start;
  }

  .contact-map {
    grid-column: 1 / -1;
  }
}

/* ----------------------------------------------------------
   DESKTOP — min-width: 1280px
---------------------------------------------------------- */
@media (min-width: 1280px) {
  section {
    padding: calc(var(--spacing-unit) * 4) calc(var(--spacing-unit) * 4);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
  }

  .hero-image-bg {
    min-height: 480px;
  }

  #hero h1 {
    font-size: 2.5rem;
  }

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

  #gallery-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}