/* ==========================================================================
   Nav Prototype — Main Stylesheet
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties
   -------------------------------------------------------------------------- */
:root {
  --color-accent:      #444444;
  --color-white:       #ffffff;
  --color-off-white:   #f5f5f5;
  --color-gray-light:  #e0e0e0;
  --color-gray-mid:    #999999;
  --color-gray-dark:   #444444;
  --color-text:        #222222;

  --font-body:    system-ui, -apple-system, 'Segoe UI', sans-serif;

  --nav-height:        64px;
  --util-nav-height:   38px;
  --total-header-height: calc(var(--nav-height) + var(--util-nav-height));

  --container-max:     1280px;
  --container-pad:     clamp(1rem, 4vw, 2.5rem);

  --radius-sm:  3px;
  --radius-md:  5px;

  --shadow-dropdown: 0 8px 24px rgba(0,0,0,0.10), 0 2px 6px rgba(0,0,0,0.06);

  --transition-fast: 150ms ease;
  --transition-mid:  250ms ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

ul, ol {
  list-style: none;
}

/* --------------------------------------------------------------------------
   Skip Link (Accessibility)
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: #333;
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 9999;
  transition: top var(--transition-fast);
}
.skip-link:focus {
  top: 0;
}

/* --------------------------------------------------------------------------
   Site Header
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-white);
  box-shadow: 0 1px 0 var(--color-gray-light), 0 2px 8px rgba(0,0,0,0.05);
}

/* --------------------------------------------------------------------------
   Utility Nav (top bar)
   -------------------------------------------------------------------------- */
.utility-nav {
  background: #333333;
  height: var(--util-nav-height);
  display: flex;
  align-items: center;
}

.utility-nav__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.25rem;
}

.utility-nav__item {
  display: flex;
  align-items: center;
}

.utility-nav__link {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  color: rgba(255,255,255,0.8);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
  background: transparent;
  border: none;
}

.utility-nav__link:hover,
.utility-nav__link:focus-visible {
  color: var(--color-white);
  background: rgba(255,255,255,0.1);
  outline: none;
}

.utility-nav__link--donate {
  background: #555555;
  color: var(--color-white);
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
}
.utility-nav__link--donate:hover,
.utility-nav__link--donate:focus-visible {
  background: #666666;
  color: var(--color-white);
}

.utility-nav__divider {
  width: 1px;
  height: 16px;
  background: rgba(255,255,255,0.15);
  margin: 0 0.25rem;
}

/* Cart icon */
.util-cart-icon {
  position: relative;
  display: flex;
  align-items: center;
}

/* --------------------------------------------------------------------------
   Primary Nav Bar
   -------------------------------------------------------------------------- */
.primary-nav-bar {
  height: var(--nav-height);
  display: flex;
  align-items: center;
}

.primary-nav-bar__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0;
}

/* Logo — plain text only, no mark */
.site-logo {
  display: flex;
  align-items: center;
  margin-right: 2rem;
  flex-shrink: 0;
  text-decoration: none;
}

.site-logo__mark {
  display: none;
}

.site-logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.site-logo__name {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0;
}

/* Primary menu */
.primary-menu {
  display: flex;
  align-items: stretch;
  height: var(--nav-height);
  gap: 0;
  flex: 1;
}

.primary-menu__item {
  position: relative;
  display: flex;
  align-items: center;
}

.primary-menu__link {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0 0.875rem;
  height: 100%;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-gray-dark);
  white-space: nowrap;
  cursor: pointer;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.primary-menu__link:hover,
.primary-menu__link:focus-visible,
.primary-menu__item.is-open > .primary-menu__link {
  color: var(--color-text);
  border-bottom-color: #333;
  outline: none;
}

.primary-menu__chevron {
  width: 10px;
  height: 10px;
  opacity: 0.4;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
  flex-shrink: 0;
}
.primary-menu__item.is-open > .primary-menu__link .primary-menu__chevron,
.primary-menu__item:hover > .primary-menu__link .primary-menu__chevron {
  transform: rotate(180deg);
  opacity: 0.7;
}

/* --------------------------------------------------------------------------
   Dropdown Menus
   -------------------------------------------------------------------------- */
.dropdown {
  position: absolute;
  top: calc(100% + 1px);
  left: 0;
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  border-radius: 0 var(--radius-md) var(--radius-md) var(--radius-md);
  box-shadow: var(--shadow-dropdown);
  min-width: 220px;
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--transition-mid), visibility var(--transition-mid), transform var(--transition-mid);
  z-index: 500;
}

.primary-menu__item:hover > .dropdown,
.primary-menu__item.is-open > .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown--wide {
  min-width: 260px;
}

.dropdown__item {
  position: relative;
}

.dropdown__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1.125rem;
  font-size: 0.9rem;
  font-family: var(--font-body);
  color: var(--color-gray-dark);
  transition: background var(--transition-fast), color var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
  gap: 0.5rem;
}

.dropdown__link:hover,
.dropdown__link:focus-visible,
.dropdown__item.is-open > .dropdown__link {
  background: var(--color-off-white);
  color: var(--color-text);
  outline: none;
}

.dropdown__link .dropdown__chevron {
  width: 8px;
  height: 8px;
  opacity: 0.35;
  flex-shrink: 0;
  transform: rotate(-90deg);
}

.dropdown__group-label {
  padding: 0.625rem 1.125rem 0.25rem;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-gray-mid);
}

.dropdown__divider {
  height: 1px;
  background: var(--color-gray-light);
  margin: 0.375rem 0;
}

/* Sub-dropdown (flyout) */
.sub-dropdown {
  position: absolute;
  top: -0.5rem;
  left: 100%;
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-dropdown);
  min-width: 220px;
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-6px);
  transition: opacity var(--transition-mid), visibility var(--transition-mid), transform var(--transition-mid);
  z-index: 600;
}

.dropdown__item:hover > .sub-dropdown,
.dropdown__item.is-open > .sub-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.sub-dropdown .dropdown__link {
  padding: 0.5rem 1rem;
}

/* --------------------------------------------------------------------------
   Placeholder Homepage
   -------------------------------------------------------------------------- */
.site-main {
  min-height: calc(100vh - var(--total-header-height) - 60px);
}

.hero-placeholder {
  background: var(--color-off-white);
  border-bottom: 1px solid var(--color-gray-light);
  padding: 4rem var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
}

.hero-placeholder__inner {
  text-align: center;
  max-width: 560px;
}

.hero-placeholder__label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gray-mid);
  margin-bottom: 1rem;
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--color-gray-light);
  border-radius: 100px;
  background: var(--color-white);
}

.hero-placeholder__heading {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.75rem;
}

.hero-placeholder__sub {
  font-size: 1rem;
  color: var(--color-gray-mid);
  max-width: 420px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Remove hero action buttons — not needed for nav testing */
.hero-placeholder__actions {
  display: none;
}

/* Content area below hero */
.section-placeholder {
  padding: 3rem var(--container-pad);
  max-width: var(--container-max);
  margin: 0 auto;
}

.section-placeholder__heading {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.375rem;
}

.section-placeholder__sub {
  color: var(--color-gray-mid);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.placeholder-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.placeholder-card {
  background: var(--color-off-white);
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.placeholder-card__icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--color-gray-light);
  margin-bottom: 0.2rem;
}

.placeholder-card__title {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-gray-dark);
}

.placeholder-card__desc {
  font-size: 0.85rem;
  color: var(--color-gray-mid);
  line-height: 1.5;
}

.section-divider {
  height: 1px;
  background: var(--color-gray-light);
  max-width: var(--container-max);
  margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Site Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: #333333;
  color: rgba(255,255,255,0.65);
  padding: 2.5rem var(--container-pad) 1.5rem;
  margin-top: 4rem;
}

.site-footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.footer-brand {
  max-width: 240px;
}

.footer-brand__name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 0.4rem;
}

.footer-brand__desc {
  font-size: 0.85rem;
  line-height: 1.55;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-links__group-title {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.35);
  margin-bottom: 0.625rem;
}

.footer-links__list {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.footer-links__link {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition-fast);
  cursor: pointer;
}
.footer-links__link:hover {
  color: var(--color-white);
}

.site-footer__bottom {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-footer__copy {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.35);
}

.footer-social {
  display: flex;
  gap: 0.625rem;
}

.footer-social__link {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.45);
  font-size: 0.7rem;
  transition: all var(--transition-fast);
  cursor: pointer;
}
.footer-social__link:hover {
  border-color: rgba(255,255,255,0.35);
  color: var(--color-white);
}

/* --------------------------------------------------------------------------
   Mobile Nav
   -------------------------------------------------------------------------- */
.mobile-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--color-gray-dark);
  margin-left: auto;
  border-radius: var(--radius-sm);
}
.mobile-menu-toggle:hover {
  background: var(--color-off-white);
  color: var(--color-text);
}

.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  top: var(--total-header-height);
  background: var(--color-white);
  overflow-y: auto;
  z-index: 900;
  padding: 1rem 0 2rem;
  border-top: 1px solid var(--color-gray-light);
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav__item {
  border-bottom: 1px solid var(--color-gray-light);
}

.mobile-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem var(--container-pad);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-gray-dark);
  cursor: pointer;
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
}
.mobile-nav__link:hover {
  color: var(--color-text);
  background: var(--color-off-white);
}

.mobile-nav__sub {
  display: none;
  background: var(--color-off-white);
  padding: 0.5rem 0;
}
.mobile-nav__sub.is-open {
  display: block;
}

.mobile-nav__sub-link {
  display: block;
  padding: 0.625rem var(--container-pad) 0.625rem calc(var(--container-pad) + 1rem);
  font-size: 0.9375rem;
  color: var(--color-gray-dark);
  cursor: pointer;
}
.mobile-nav__sub-link:hover {
  color: var(--color-text);
}

.mobile-nav__sub-label {
  padding: 0.75rem var(--container-pad) 0.25rem calc(var(--container-pad) + 0.75rem);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-gray-mid);
}

@media (max-width: 900px) {
  .primary-menu,
  .utility-nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .site-logo {
    margin-right: auto;
  }
}

@media (max-width: 480px) {
  .placeholder-grid {
    grid-template-columns: 1fr;
  }
}