/* ============================================
   CZ Supply — Layout: Header, Footer, Grids
   ============================================ */

/* --- Announcement Bar --- */

.announcement {
  background: var(--navy);
  color: var(--lavender-light);
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  padding: var(--sp-sm) var(--sp-md);
  text-align: center;
  overflow: hidden;
}

/* --- Header --- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(254, 253, 251, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(var(--navy-rgb), 0.06);
  transition: padding var(--dur-med) var(--ease-out),
              box-shadow var(--dur-med) var(--ease-out);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: var(--sp-md) var(--sp-lg);
  transition: padding var(--dur-med) var(--ease-out);
}

.site-header.is-scrolled .header-inner {
  padding-top: var(--sp-sm);
  padding-bottom: var(--sp-sm);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--navy);
  text-decoration: none;
  flex-shrink: 0;
}

.logo img {
  height: 40px;
  width: auto;
  transition: height var(--dur-med) var(--ease-out);
}

.site-header.is-scrolled .logo img {
  height: 32px;
}

/* Desktop Nav */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-xl);
}

.nav-link {
  font-size: var(--fs-small);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
  color: var(--text-secondary);
  position: relative;
  padding: var(--sp-xs) 0;
  transition: color var(--dur-fast) var(--ease-out);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--lavender);
  border-radius: 1px;
  transition: width var(--dur-med) var(--ease-out);
}

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

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Cart icon */
.nav-cart {
  position: relative;
  padding: var(--sp-xs);
  color: var(--text-secondary);
  transition: color var(--dur-fast);
}

.nav-cart:hover {
  color: var(--navy);
}

.cart-count {
  position: absolute;
  top: -4px;
  right: -8px;
  width: 18px;
  height: 18px;
  background: var(--lavender);
  color: var(--navy-dark);
  font-size: 10px;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Mobile hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--sp-sm);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: all var(--dur-med) var(--ease-out);
}

.nav-toggle.is-open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile nav overlay */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(var(--navy-rgb), 0.95);
  backdrop-filter: blur(20px);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-xl);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-med) var(--ease-out);
}

.mobile-nav.is-open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav a {
  font-family: var(--font-heading);
  font-size: var(--fs-h2);
  color: var(--text-inverse);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--dur-med) var(--ease-out),
              transform var(--dur-med) var(--ease-out);
}

.mobile-nav.is-open a {
  opacity: 1;
  transform: translateY(0);
}

.mobile-nav.is-open a:nth-child(1) { transition-delay: 100ms; }
.mobile-nav.is-open a:nth-child(2) { transition-delay: 150ms; }
.mobile-nav.is-open a:nth-child(3) { transition-delay: 200ms; }
.mobile-nav.is-open a:nth-child(4) { transition-delay: 250ms; }
.mobile-nav.is-open a:nth-child(5) { transition-delay: 300ms; }
.mobile-nav.is-open a:nth-child(6) { transition-delay: 350ms; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .mobile-nav { display: flex; }
}

/* --- Footer --- */

.site-footer {
  background: var(--surface-dark);
  color: var(--text-inverse);
  padding-top: var(--sp-4xl);
  padding-bottom: var(--sp-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--sp-3xl);
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--sp-lg);
}

.footer-brand {
  max-width: 320px;
}

.footer-brand .logo {
  color: var(--text-inverse);
  margin-bottom: var(--sp-lg);
}

.footer-tagline {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: var(--fs-body);
  color: var(--lavender-light);
  margin-bottom: var(--sp-md);
  line-height: var(--lh-body);
}

.footer-desc {
  font-size: var(--fs-small);
  color: rgba(250, 247, 242, 0.6);
  line-height: 1.7;
}

.footer-heading {
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  color: var(--lavender);
  margin-bottom: var(--sp-lg);
}

.footer-links a {
  display: block;
  font-size: var(--fs-small);
  color: rgba(250, 247, 242, 0.65);
  padding: var(--sp-xs) 0;
  transition: color var(--dur-fast);
}

.footer-links a:hover {
  color: var(--text-inverse);
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  font-size: var(--fs-small);
  color: rgba(250, 247, 242, 0.65);
  margin-bottom: var(--sp-sm);
}

.footer-contact-item svg {
  flex-shrink: 0;
  color: var(--lavender);
}

.footer-social {
  display: flex;
  gap: var(--sp-md);
  margin-top: var(--sp-lg);
}

.footer-social a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: var(--lavender-light);
  transition: background var(--dur-fast), color var(--dur-fast);
}

.footer-social a:hover {
  background: var(--lavender);
  color: var(--navy-dark);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-wide);
  margin: var(--sp-3xl) auto 0;
  padding: var(--sp-lg) var(--sp-lg) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: var(--fs-xs);
  color: rgba(250, 247, 242, 0.4);
}

.footer-motto {
  font-family: var(--font-heading);
  font-style: italic;
  color: rgba(250, 247, 242, 0.5);
}

.footer-payments {
  display: flex;
  gap: var(--sp-sm);
  align-items: center;
}

.payment-icon {
  padding: 4px 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: rgba(250, 247, 242, 0.5);
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-2xl);
  }
  .footer-brand {
    grid-column: 1 / -1;
    max-width: none;
  }
}

@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: var(--sp-md);
    text-align: center;
  }
}

/* --- Grid Systems --- */

.grid {
  display: grid;
  gap: var(--sp-xl);
}

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

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

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

@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .grid-4,
  .grid-3,
  .grid-2 { grid-template-columns: 1fr; }
}

/* --- Split layout --- */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3xl);
  align-items: center;
}

.split-reverse {
  direction: rtl;
}

.split-reverse > * {
  direction: ltr;
}

@media (max-width: 900px) {
  .split {
    grid-template-columns: 1fr;
    gap: var(--sp-2xl);
  }
  .split-reverse {
    direction: ltr;
  }
}

/* --- Page Hero --- */

.page-hero {
  background: var(--surface-dark);
  color: var(--text-inverse);
  padding: var(--sp-5xl) var(--sp-lg) var(--sp-4xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(var(--lavender-rgb), 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.page-hero h1 {
  font-size: var(--fs-display);
  color: var(--text-inverse);
  margin-bottom: var(--sp-md);
}

.page-hero p {
  font-size: var(--fs-body-lg);
  color: rgba(250, 247, 242, 0.7);
  max-width: 560px;
  margin: 0 auto;
}

.page-hero-short {
  padding: var(--sp-4xl) var(--sp-lg) var(--sp-3xl);
}

/* --- Section variants --- */

.section-dark {
  background: var(--surface-dark);
  color: var(--text-inverse);
}

.section-dark h1,
.section-dark h2,
.section-dark h3 {
  color: var(--text-inverse);
}

.section-cream {
  background: var(--cream);
}