/**
 * RO SACHY LTD - Layout Components
 * Navigation, Footer, Grid System
 */

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background-color: var(--color-white);
  border-bottom: var(--border-width) solid var(--color-border);
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

.nav.scrolled {
  backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-md);
}

/* Ensure nav is fully opaque when mobile menu is open */
.nav.menu-open {
  background-color: var(--color-white) !important;
  backdrop-filter: none !important;
}

.nav.menu-open.scrolled {
  background-color: var(--color-white) !important;
  backdrop-filter: none !important;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  overflow: visible;
  width: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
  margin-right: var(--space-sm);
  z-index: 10;
}

.nav-logo {
  height: 24px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 1;
  min-width: 0;
  overflow: hidden;
}

.nav-brand-name {
  /* Visually hidden for accessibility - screen readers only */
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-left: var(--space-sm);
  flex-shrink: 1;
  flex-wrap: nowrap;
  overflow: hidden;
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  padding: 0.5rem 0;
  position: relative;
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-secondary);
  transition: width var(--transition-base);
}

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

.nav-link.active {
  color: var(--color-primary);
  font-weight: var(--weight-semibold);
}

.nav-cta {
  margin-left: var(--space-sm);
  white-space: nowrap;
  flex-shrink: 0;
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  cursor: pointer;
  z-index: var(--z-sticky);
  background: none;
  border: none;
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  width: 28px;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(8px, -8px);
}

/* Mobile Menu Overlay */
.nav-overlay {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-white);
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-20px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
  background-color: var(--color-white);
}

.nav-overlay .nav-links {
  flex-direction: column;
  padding: var(--space-lg) var(--container-padding);
  gap: var(--space-sm);
  min-height: 100%;
}

.nav-overlay .nav-link {
  font-size: var(--text-xl);
  width: 100%;
  padding: var(--space-sm) 0;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background-color: var(--footer-bg);
  color: var(--color-white);
  padding: var(--space-xl) 0 var(--space-md) 0;
  margin-top: 0;
  border-top: 1px solid rgba(201, 168, 76, 0.2);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-column h4 {
  color: var(--color-white);
  font-size: var(--text-lg);
  margin-bottom: var(--space-sm);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: var(--space-sm);
  flex-shrink: 0;
}

.footer-logo {
  height: 36px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  flex-shrink: 0;
}

.footer-brand-name {
  /* Visually hidden for accessibility - screen readers only */
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.footer-tagline {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: var(--leading-relaxed);
  max-width: 280px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-link {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  transition: color var(--transition-base);
}

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

.footer-contact p {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  margin-bottom: var(--space-xs);
}

.footer-bottom {
  border-top: 2px solid var(--color-secondary);
  padding-top: var(--space-md);
  margin-top: var(--space-lg);
}

.footer-parent {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  margin-bottom: var(--space-xs);
  font-style: italic;
}

.footer-copyright {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  text-align: center;
}

/* ============================================================
   MODAL
   ============================================================ */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-modal);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.modal.active {
  display: flex;
  opacity: 1;
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal-backdrop);
}

.modal-content {
  position: relative;
  margin: auto;
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  max-width: 600px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  padding: var(--space-lg);
  z-index: var(--z-modal);
  animation: modalSlideIn var(--transition-base);
}

@keyframes modalSlideIn {
  from {
    transform: translateY(-50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
}

.modal-title {
  font-size: var(--text-3xl);
  color: var(--color-primary);
  margin-bottom: 0;
}

.modal-close {
  font-size: var(--text-3xl);
  line-height: 1;
  color: var(--color-text-light);
  cursor: pointer;
  padding: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-base);
}

.modal-close:hover {
  background-color: var(--color-bg);
  color: var(--color-primary);
}

/* ============================================================
   FORM STYLES
   ============================================================ */
.form-group {
  margin-bottom: var(--space-sm);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.form-label.required::after {
  content: '*';
  color: var(--color-secondary);
  margin-left: 4px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75rem;
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius-sm);
  font-size: var(--text-base);
  transition: border-color var(--transition-base);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(201, 168, 76, 0.1);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-submit {
  width: 100%;
  margin-top: var(--space-sm);
}

.form-success {
  display: none;
  padding: var(--space-md);
  background-color: var(--color-accent);
  color: var(--color-white);
  border-radius: var(--border-radius-md);
  text-align: center;
  margin-top: var(--space-md);
}

.form-success.active {
  display: block;
  animation: slideDown var(--transition-base);
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================================
   RESPONSIVE LAYOUT
   ============================================================ */

/* Desktop & Above - Show full menu, hide hamburger */
@media (min-width: 1025px) {
  .nav-toggle {
    display: none !important;
  }

  .nav-menu {
    display: flex !important;
  }

  .nav-overlay {
    display: none !important;
  }
}

/* Large Desktop - Full spacing */
@media (min-width: 1280px) {
  .nav-links {
    gap: 1.5rem;
  }
}

/* Desktop - Comfortable spacing (1151px - 1279px) */
@media (max-width: 1279px) and (min-width: 1151px) {
  .nav-links {
    gap: 1rem;
  }

  .nav-link {
    font-size: 0.875rem;
  }
}

/* Tablet Large - Condensed nav (1025px - 1150px) */
@media (max-width: 1150px) and (min-width: 1025px) {
  .nav-container {
    padding: 0 1rem;
  }

  .nav-links {
    gap: 0.625rem;
    margin-left: 0.5rem;
  }

  .nav-link {
    font-size: 0.8125rem; /* 13px */
    padding: 0.5rem 0.25rem;
  }

  .nav-cta {
    margin-left: 0.5rem;
    font-size: 0.8125rem;
    padding: 0.5rem 0.875rem;
  }

  .nav-logo {
    height: 22px;
    max-width: 130px;
  }

  .nav-brand {
    margin-right: 0.5rem;
  }
}

/* Tablet Small & Mobile - Hamburger menu (≤1024px) */
@media (max-width: 1024px) {
  .nav {
    background-color: var(--color-white);
  }

  .nav.scrolled {
    background-color: var(--color-white);
    backdrop-filter: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    display: none;
  }

  .nav-overlay {
    display: block;
  }

  .nav-container {
    padding: 0 1rem;
  }

  .nav-logo {
    height: 22px;
    max-width: 130px;
  }

  .nav-brand {
    margin-right: 0.5rem;
  }
}

/* Tablet Footer */
@media (max-width: 1199px) {
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Mobile Specific */
@media (max-width: 767px) {
  .nav-overlay.active {
    display: block;
    background-color: var(--color-white);
  }

  .nav-logo {
    height: 22px;
    max-width: 120px;
  }

  .nav-brand {
    margin-right: 0.5rem;
  }

  .nav-container {
    padding: 0 1rem;
  }

  .footer-logo {
    height: 28px;
    max-width: 160px;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .modal-content {
    width: 95%;
    padding: var(--space-md);
  }

  .modal-title {
    font-size: var(--text-2xl);
  }
}