/* Layout CSS - Struttura pagina, grid, container */

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.container-sm {
  max-width: 640px;
}

.container-md {
  max-width: 768px;
}

.container-lg {
  max-width: 1024px;
}

/* Main Layout */
.page-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1;
  padding: var(--spacing-6) 0;
}

@media (min-width: 768px) {
  main {
    padding: var(--spacing-8) 0;
  }
}

/* Header */
.header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
}

.header-logo:hover {
  color: var(--color-gray-900);
}

.header-logo svg {
  color: var(--color-primary);
}

.header-nav {
  display: none;
  align-items: center;
  gap: var(--spacing-6);
}

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

.header-nav-link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-600);
  transition: color var(--transition-fast);
}

.header-nav-link:hover,
.header-nav-link.active {
  color: var(--color-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

/* Mobile Menu */
.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-gray-700);
}

@media (min-width: 768px) {
  .mobile-menu-btn {
    display: none;
  }
}

.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  top: 64px;
  background-color: var(--color-white);
  z-index: 40;
  padding: var(--spacing-4);
}

.mobile-nav.active {
  display: block;
}

@media (min-width: 768px) {
  .mobile-nav {
    display: none !important;
  }
}

.mobile-nav-link {
  display: block;
  padding: var(--spacing-4);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  border-bottom: 1px solid var(--color-gray-100);
}

.mobile-nav-link:hover {
  color: var(--color-primary);
}

/* Footer */
.footer {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-gray-200);
  padding: var(--spacing-6) 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-3);
  text-align: center;
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    gap: var(--spacing-4);
    text-align: left;
  }
}

.footer-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.footer-copyright {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.footer-version {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.footer-version a {
  color: var(--color-primary);
}

.footer-version a:hover {
  text-decoration: underline;
}

.footer-center {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
}

.footer-separator {
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
}

.footer-changelog-link {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  transition: color var(--transition-fast);
}

.footer-changelog-link:hover {
  color: var(--color-primary);
}

.footer-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

@media (min-width: 768px) {
  .footer-left,
  .footer-center,
  .footer-right {
    flex: 1;
  }

  .footer-left {
    justify-content: flex-start;
  }

  .footer-center {
    justify-content: center;
  }

  .footer-right {
    justify-content: flex-end;
  }
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--spacing-4);
}

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

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

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

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

@media (min-width: 576px) {
  .sm\:grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .md\:grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (min-width: 992px) {
  .lg\:grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .lg\:grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Flexbox Utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-end {
  justify-content: flex-end;
}

.gap-1 { gap: var(--spacing-1); }
.gap-2 { gap: var(--spacing-2); }
.gap-3 { gap: var(--spacing-3); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }
.gap-8 { gap: var(--spacing-8); }

/* Section */
.section {
  margin-bottom: var(--spacing-8);
}

@media (min-width: 768px) {
  .section {
    margin-bottom: var(--spacing-12);
  }
}

.section-header {
  margin-bottom: var(--spacing-6);
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-2);
}

.section-subtitle {
  color: var(--color-gray-500);
}