/**
 * ELIO SOLAR - MOBILE MENU STYLES
 * Mobile slide-in menu with swipe gestures
 * Version: 2.0
 */

/* ============================================
   CSS CUSTOM PROPERTIES
   ============================================ */

:root {
  /* Mobile Menu Dimensions */
  --mobile-menu-width: 85vw;
  --mobile-menu-max-width: 400px;
  --mobile-menu-padding: 24px;

  /* Mobile Menu Colors */
  --mobile-menu-bg: linear-gradient(135deg, #1e3a8a 0%, #1e3a8a 100%);
  --mobile-menu-text: rgba(255, 255, 255, 0.9);
  --mobile-menu-border: rgba(255, 255, 255, 0.1);

  /* Mobile Menu Backdrop */
  --mobile-backdrop-bg: rgba(0, 0, 0, 0.6);
  --mobile-backdrop-blur: 4px;

  /* Mobile Menu Animation */
  --mobile-menu-duration: 0.3s;
  --mobile-menu-easing: cubic-bezier(0.4, 0, 0.2, 1);

  /* Mobile Menu Items */
  --mobile-item-height: 56px;
  --mobile-item-font-size: 18px;
  --mobile-subitem-height: 48px;
  --mobile-subitem-font-size: 16px;
  --mobile-subitem-indent: 24px;
}

/* ============================================
   MOBILE MENU BACKDROP
   ============================================ */

.mobile-menu-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--mobile-backdrop-bg);
  backdrop-filter: blur(var(--mobile-backdrop-blur));
  -webkit-backdrop-filter: blur(var(--mobile-backdrop-blur));
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--mobile-menu-duration) var(--mobile-menu-easing),
              visibility var(--mobile-menu-duration) var(--mobile-menu-easing);
  z-index: calc(var(--z-mobile-menu) - 1);
  cursor: pointer;
}

.mobile-menu-backdrop[data-visible="true"] {
  opacity: 1;
  visibility: visible;
}

/* ============================================
   MOBILE MENU PANEL
   ============================================ */

.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--mobile-menu-width);
  max-width: var(--mobile-menu-max-width);
  background: var(--mobile-menu-bg);
  color: var(--mobile-menu-text);
  padding: var(--mobile-menu-padding);
  overflow-y: auto;
  overflow-x: hidden;
  transform: translateX(-100%);
  transition: transform var(--mobile-menu-duration) var(--mobile-menu-easing);
  z-index: var(--z-mobile-menu);
  box-shadow: 2px 0 20px rgba(0, 0, 0, 0.3);
}

/* Open state */
.mobile-menu[aria-hidden="false"] {
  transform: translateX(0);
}

/* Swipe gesture visual feedback */
.mobile-menu[data-swiping="true"] {
  transition: none; /* Disable transition during swipe */
}

/* Custom scrollbar */
.mobile-menu::-webkit-scrollbar {
  width: 6px;
}

.mobile-menu::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
}

.mobile-menu::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
}

.mobile-menu::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* ============================================
   MOBILE MENU HEADER
   ============================================ */

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 24px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--mobile-menu-border);
}

.mobile-menu-logo {
  height: 50px;
  width: auto;
}

.mobile-menu-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: 8px;
  color: inherit;
  cursor: pointer;
  transition: background 0.2s ease;
}

.mobile-menu-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

.mobile-menu-close:focus {
  outline: 2px solid currentColor;
  outline-offset: 2px;
}

.mobile-menu-close-icon {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

/* ============================================
   MOBILE MENU NAVIGATION
   ============================================ */

.mobile-menu-nav {
  list-style: none;
  padding: 0;
  margin: 0 0 32px 0;
}

.mobile-menu-item {
  border-bottom: 1px solid var(--mobile-menu-border);
}

.mobile-menu-link,
.mobile-menu-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: var(--mobile-item-height);
  padding: 0 16px;
  font-family: 'Inter', sans-serif;
  font-size: var(--mobile-item-font-size);
  font-weight: 500;
  color: inherit;
  text-decoration: none;
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background 0.15s ease;
  text-align: left;
}

.mobile-menu-link:active,
.mobile-menu-trigger:active {
  background: rgba(255, 255, 255, 0.1);
}

.mobile-menu-link:focus,
.mobile-menu-trigger:focus {
  outline: 2px solid rgba(255, 255, 255, 0.5);
  outline-offset: -2px;
}

/* Icon (arrow or chevron) */
.mobile-menu-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform 0.3s ease;
  fill: currentColor;
}

/* Rotate icon when expanded */
.mobile-menu-trigger[aria-expanded="true"] .mobile-menu-icon {
  transform: rotate(180deg);
}

/* ============================================
   MOBILE SUBMENU (Accordion)
   ============================================ */

.mobile-submenu {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.mobile-submenu[aria-hidden="false"] {
  max-height: 500px; /* Adjust based on content */
}

.mobile-submenu-item {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-submenu-link {
  display: flex;
  align-items: center;
  height: var(--mobile-subitem-height);
  padding: 0 16px 0 calc(16px + var(--mobile-subitem-indent));
  font-size: var(--mobile-subitem-font-size);
  font-weight: 400;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: all 0.15s ease;
}

.mobile-submenu-link:active {
  background: rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 1);
}

.mobile-submenu-link:focus {
  outline: 2px solid rgba(255, 255, 255, 0.5);
  outline-offset: -2px;
}

/* Small arrow icon for subitem */
.mobile-submenu-arrow {
  width: 16px;
  height: 16px;
  margin-right: 12px;
  fill: currentColor;
  opacity: 0.6;
}

/* ============================================
   MOBILE MENU FOOTER (Trust Badge, etc.)
   ============================================ */

.mobile-menu-footer {
  padding-top: 24px;
  border-top: 1px solid var(--mobile-menu-border);
  margin-top: auto;
}

.mobile-trust-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  margin-bottom: 16px;
}

.mobile-trust-icon {
  width: 20px;
  height: 20px;
  fill: #f59e0b;
  flex-shrink: 0;
}

.mobile-trust-text {
  font-size: 14px;
  line-height: 1.5;
}

.mobile-trust-rating {
  font-weight: 600;
  color: white;
}

.mobile-trust-count {
  color: rgba(255, 255, 255, 0.7);
}

/* ============================================
   MOBILE CTA (in menu footer)
   ============================================ */

.mobile-menu-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 16px 24px;
  font-size: 16px;
  font-weight: 600;
  color: white;
  background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
  border: none;
  border-radius: 12px;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
  transition: all 0.3s ease;
}

.mobile-menu-cta:active {
  transform: scale(0.98);
}

.mobile-menu-cta:focus {
  outline: 2px solid white;
  outline-offset: 2px;
}

.mobile-cta-icon {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* ============================================
   SWIPE GESTURE INDICATOR
   ============================================ */

.swipe-indicator {
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  width: 40px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 40px 0 0 40px;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.mobile-menu:hover .swipe-indicator {
  opacity: 1;
}

.swipe-indicator-icon {
  width: 24px;
  height: 24px;
  fill: rgba(255, 255, 255, 0.6);
  animation: swipeHint 2s ease-in-out infinite;
}

@keyframes swipeHint {
  0%, 100% {
    transform: translateX(0);
  }
  50% {
    transform: translateX(-8px);
  }
}

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

@media (max-width: 480px) {
  :root {
    --mobile-menu-width: 90vw;
    --mobile-menu-padding: 20px;
  }
}

@media (min-width: 1024px) {
  /* Hide mobile menu on desktop */
  .mobile-menu,
  .mobile-menu-backdrop {
    display: none !important;
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
  .mobile-menu,
  .mobile-menu-backdrop {
    display: none !important;
  }
}

/* ============================================
   REDUCED MOTION SUPPORT
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  .mobile-menu,
  .mobile-menu-backdrop,
  .mobile-menu-link,
  .mobile-menu-trigger,
  .mobile-menu-icon,
  .mobile-submenu,
  .swipe-indicator-icon {
    transition: none !important;
    animation: none !important;
  }

  .mobile-menu[aria-hidden="false"] {
    transform: translateX(0);
  }

  .mobile-menu[aria-hidden="true"] {
    transform: translateX(-100%);
  }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

/* Focus trap active state */
.mobile-menu[data-focus-trap="active"] {
  outline: 2px solid rgba(255, 255, 255, 0.3);
  outline-offset: -2px;
}

/* Skip link for keyboard users */
.mobile-menu-skip {
  position: absolute;
  top: -100px;
  left: 0;
  background: white;
  color: #1e3a8a;
  padding: 8px 16px;
  text-decoration: none;
  border-radius: 0 0 8px 0;
  font-weight: 600;
  z-index: 10000;
  transition: top 0.2s ease;
}

.mobile-menu-skip:focus {
  top: 0;
}