/* ==========================================================================
   AgroBerry — Header, Navigation & Footer Layout
   ========================================================================== */

/* ---- Header ---- */
.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: var(--z-header);
  padding-block: var(--space-5);
  transition: padding var(--duration-base) var(--ease-luxury),
    background-color var(--duration-base) var(--ease-luxury),
    box-shadow var(--duration-base) var(--ease-luxury);
}

.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(14, 25, 18, 0.28);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  opacity: 1;
  transition: opacity var(--duration-base) var(--ease-luxury),
    background-color var(--duration-base) var(--ease-luxury);
  z-index: -1;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-header.is-scrolled {
  padding-block: var(--space-3);
  box-shadow: var(--shadow-md);
}

.site-header.is-scrolled::before {
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex-shrink: 0;
}

.brand img {
  height: 42px;
  width: auto;
  transition: height var(--duration-base) var(--ease-luxury);
}

.site-header.is-scrolled .brand img {
  height: 36px;
}

.brand-word {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-white);
  transition: color var(--duration-base) var(--ease-luxury);
}

.site-header.is-scrolled .brand-word {
  color: var(--color-green-900);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.main-nav a {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: rgba(255, 255, 255, 0.88);
  position: relative;
  padding-block: 0.3rem;
}

.site-header.is-scrolled .main-nav a {
  color: var(--color-ink);
}

.main-nav a::after {
  content: '';
  position: absolute;
  inset-inline-start: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--brand-accent);
  transition: width var(--duration-fast) var(--ease-luxury);
}

.main-nav a:hover::after,
.main-nav a.is-active::after {
  width: 100%;
}

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

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.35);
  transition: all var(--duration-fast) var(--ease-luxury);
}

.site-header.is-scrolled .icon-btn {
  color: var(--color-green-800);
  border-color: var(--color-border-strong);
}

.icon-btn:hover {
  background: var(--brand-accent);
  border-color: var(--brand-accent);
  color: var(--color-white);
  transform: translateY(-2px);
}

.icon-btn svg {
  width: 19px;
  height: 19px;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.4rem 0.5rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.35);
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--color-white);
  transition: all var(--duration-fast) var(--ease-luxury);
}

.site-header.is-scrolled .lang-switch {
  color: var(--color-green-800);
  border-color: var(--color-border-strong);
}

.lang-switch span {
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-luxury);
}

.lang-switch span.is-active {
  background: var(--brand-accent);
  color: var(--color-white);
}

.lang-switch svg {
  width: 15px;
  height: 15px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: var(--color-white);
  align-items: center;
  justify-content: center;
}

.site-header.is-scrolled .nav-toggle {
  color: var(--color-green-800);
  border-color: var(--color-border-strong);
}

/* ---- Mobile nav ---- */
@media (max-width: 980px) {
  .main-nav {
    position: fixed;
    inset: 0;
    top: 0;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-6);
    background: linear-gradient(160deg, var(--color-surface-dark) 0%, var(--color-green-800) 100%);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--duration-base) var(--ease-luxury), opacity var(--duration-base) var(--ease-luxury), visibility var(--duration-base);
    z-index: var(--z-overlay);
  }

  .main-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .main-nav a {
    font-size: var(--fs-xl);
    color: var(--color-white) !important;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-close {
    position: absolute;
    top: var(--space-5);
    inset-inline-end: var(--container-padding);
    display: inline-flex;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: var(--color-white);
  }

  .header-actions .btn-sm.header-cta-desktop {
    display: none;
  }
}

@media (min-width: 981px) {
  .nav-close {
    display: none;
  }
}

/* ---- Footer ---- */
.site-footer {
  background: linear-gradient(180deg, var(--color-surface-dark) 0%, #081009 100%);
  color: rgba(255, 255, 255, 0.75);
  padding-block-start: var(--space-9);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: var(--space-7);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-brand img {
  height: 44px;
  margin-bottom: var(--space-4);
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  max-width: 34ch;
  margin-bottom: var(--space-5);
}

.footer-social {
  display: flex;
  gap: 0.7rem;
}

.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.18);
  transition: all var(--duration-fast) var(--ease-luxury);
}

.footer-social a:hover {
  background: var(--brand-accent);
  border-color: var(--brand-accent);
  transform: translateY(-3px);
}

.footer-social svg {
  width: 17px;
  height: 17px;
}

.footer-col h6 {
  color: var(--color-white);
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-5);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-col a {
  font-size: var(--fs-sm);
  transition: color var(--duration-fast) var(--ease-luxury), padding-inline-start var(--duration-fast) var(--ease-luxury);
}

.footer-col a:hover {
  color: var(--color-gold-300);
  padding-inline-start: 4px;
}

.footer-col p {
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: var(--space-3);
}

.newsletter-form {
  display: flex;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.2);
  overflow: hidden;
  margin-top: var(--space-4);
}

.newsletter-form input {
  flex: 1;
  background: transparent;
  border: none;
  padding: 0.85rem 1.2rem;
  color: var(--color-white);
  font-size: var(--fs-sm);
  min-width: 0;
}

.newsletter-form input::placeholder {
  color: rgba(255, 255, 255, 0.45);
}

.newsletter-form button {
  padding-inline: 1.3rem;
  background: var(--brand-accent);
  color: var(--color-white);
  font-weight: 700;
  font-size: var(--fs-sm);
  flex-shrink: 0;
  transition: background var(--duration-fast) var(--ease-luxury);
}

.newsletter-form button:hover {
  background: var(--color-red-600);
}

.newsletter-note {
  font-size: var(--fs-xs);
  color: rgba(255, 255, 255, 0.4);
  margin-top: var(--space-3);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-5);
  font-size: var(--fs-xs);
  color: rgba(255, 255, 255, 0.45);
  flex-wrap: wrap;
}

/* ---- Floating action buttons ---- */
.fab-stack {
  position: fixed;
  bottom: var(--space-5);
  inset-inline-end: var(--space-5);
  z-index: var(--z-fab);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  transition: opacity var(--duration-fast) var(--ease-luxury), visibility var(--duration-fast);
}

body.nav-open .fab-stack,
body.nav-open .back-to-top {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.fab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  color: var(--color-white);
  transition: transform var(--duration-fast) var(--ease-luxury);
}

.fab:hover {
  transform: translateY(-4px) scale(1.05);
}

.fab-whatsapp {
  background: #25d366;
}

.fab-call {
  background: var(--brand-accent);
}

.fab svg {
  width: 26px;
  height: 26px;
}

/* ---- Back to top ---- */
.back-to-top {
  position: fixed;
  bottom: var(--space-5);
  inset-inline-start: var(--space-5);
  z-index: var(--z-fab);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: rgba(15, 26, 20, 0.85);
  color: var(--color-white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--duration-base) var(--ease-luxury);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

[dir='rtl'] .back-to-top svg,
[dir='rtl'] .scroll-hint svg {
  transform: scaleX(-1);
}