/* =================================================================== */
/* HEADER & NAVIGATION STYLES
/* =================================================================== */

.kai-header {
  font-family: var(--font-sans);
  transition: background-color 0.4s ease, box-shadow 0.4s ease;
}

.kai-header.scrolled {
  background-color: var(--color-glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-glass-border);
  box-shadow: 0 2px 10px var(--color-glass-shadow);
}

.kai-header .header-icon {
  color: var(--color-text-primary);
}

.header-nav-link {
  transition: color 0.2s ease-in-out;
  position: relative;
  padding-bottom: 4px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.header-nav-link:hover {
  color: var(--color-primary);
}

/* Header Shrinking Animation */
.kai-header > .container > div,
.kai-header .flex-shrink-0 img {
  transition: height 0.3s ease-in-out;
}
.kai-header > .container > div {
  height: 5rem; /* 80px */
  will-change: height;
}
.kai-header .flex-shrink-0 img {
  height: 2.5rem; /* 40px */
  will-change: height;
}
.kai-header.scrolled > .container > div {
  height: 4rem; /* 64px */
}
.kai-header.scrolled .flex-shrink-0 img {
  height: 2rem; /* 32px */
}

/* =================================================================== */
/* MEGA MENU STYLES
/* =================================================================== */

.mega-menu {
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
  background-color: var(--color-surface);
  border-radius: 0.75rem;
  box-shadow: 0 10px 25px -5px var(--color-glass-shadow);
}
.nav-item:hover .mega-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.mega-menu-grid { display: flex; gap: 2.5rem; text-align: left; }
.mega-menu-column { min-width: 200px; }
.mega-menu-title {
  font-size: 0.875rem; font-weight: 600; color: var(--color-text-secondary);
  text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 1rem;
}
.mega-menu-list { list-style: none; padding: 0; margin: 0; }
.mega-menu-list li+li { margin-top: 0.75rem; }
.mega-menu-link { text-decoration: none; color: var(--color-text-primary); font-weight: 500; transition: color 0.2s ease-in-out; }
.mega-menu-link:hover { color: var(--color-primary); }
.mega-menu-link-item { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; }
.mega-menu-link-item img { width: 32px; height: 32px; border-radius: 50%; object-fit: cover; }
.mega-menu-link-item span { color: var(--color-text-primary); font-weight: 500; transition: color 0.2s ease-in-out; }
.mega-menu-link-item:hover span { color: var(--color-primary); }
.nav-item { padding-bottom: 1rem; }


/* =================================================================== */
/* MAGNETIC NAV INDICATOR STYLES
/* =================================================================== */

#main-nav { position: relative; }
#nav-indicator {
  position: absolute; bottom: 0; height: 2px;
  background-color: var(--color-primary);
  border-radius: 1px; opacity: 0; transform: scaleX(0);
  transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}
#nav-indicator.click-effect { height: 4px; }
#nav-indicator.mega-menu-aware { background-color: var(--color-text-primary); }
html[data-theme='dark'] #nav-indicator.mega-menu-aware {
    background-color: var(--color-text-primary);
}


/* =================================================================== */
/* COMMAND PALETTE STYLES
/* =================================================================== */

#command-palette-overlay.visible #command-palette-backdrop {
  opacity: 1;
}
#command-palette-overlay.visible #command-palette {
  opacity: 1;
  transform: scale(1);
}
#command-palette-overlay {
    z-index: 1000;
}
#command-palette-backdrop {
    background-color: rgb(27 27 27 / 60%);
    backdrop-filter: blur(4px);
}
#command-palette {
    transform-origin: top;
    will-change: transform, opacity;
}

.command-palette-result-item {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.75rem; border-radius: 0.5rem; cursor: pointer;
  transition: background-color 0.2s ease-in-out, color 0.2s ease-in-out;
}
.command-palette-result-item:hover,
.command-palette-result-item.highlighted {
  background-color: var(--color-primary-light);
}
.command-palette-result-item img {
  width: 40px; height: 40px; border-radius: 50%;
  object-fit: cover; flex-shrink: 0;
}
.result-text-content .name {
  font-weight: 600;
  color: var(--color-text-primary);
}
.result-text-content .snippet {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}
.command-palette-result-item:hover .result-text-content .name,
.command-palette-result-item.highlighted .result-text-content .name {
  color: var(--color-primary);
}
.command-palette-no-results {
  padding: 1.5rem 1rem;
  text-align: center;
  color: var(--color-text-secondary);
}


/* =================================================================== */
/* UNIFIED MENU PANEL STYLES (Desktop Dropdown)
/* =================================================================== */

#unified-panel {
  transition: opacity 0.2s ease, transform 0.2s ease;
  background-color: var(--color-surface);
}
#unified-panel.visible {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}
#unified-cart-count {
  transition: transform 0.2s ease-in-out, opacity 0.2s ease-in-out;
  transform: scale(0);
  opacity: 0;
  background-color: var(--color-primary);
  color: white;
}
html[data-theme='dark'] #unified-cart-count {
    color: var(--color-background);
}
#unified-cart-count.visible {
  transform: scale(1);
  opacity: 1;
}

/* WooCommerce Mini Cart Overrides */
#unified-panel-content .woocommerce-mini-cart { margin: 0; padding: 0 !important; }
#unified-panel-content .woocommerce-mini-cart__buttons { padding: 0 1rem 1rem 1rem; }
#unified-panel-content p.woocommerce-mini-cart__total {
  padding: 1rem; margin: 0; background-color: var(--color-background);
  border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border);
}
#unified-panel-content .woocommerce-mini-cart .woocommerce-mini-cart-item {
  padding: 1rem; border-bottom: 1px solid var(--color-border);
}
#unified-panel-content .woocommerce-mini-cart__empty-message { padding: 2rem 1rem; color: var(--color-text-secondary); text-align: center; }
#unified-panel-content .woocommerce-mini-cart-item a:not(.remove) { color: var(--color-text-primary); }
#unified-panel-content .woocommerce-mini-cart-item a:not(.remove):hover { color: var(--color-primary); }


/* =================================================================== */
/* MOBILE NAVIGATION & TAB BAR
/* =================================================================== */
.kai-mobile-nav {
  display: none;
}
@media (max-width: 767px) {
  #page-header { display: none !important; }
  body { padding-bottom: 80px !important; }

  /* Tab Bar */
  #mobile-tab-bar {
    display: grid; grid-template-columns: repeat(4, 1fr);
    position: fixed; bottom: 0; left: 0; right: 0;
    height: 65px; background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    z-index: 3002; box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
  }
  html[data-theme='dark'] #mobile-tab-bar {
      box-shadow: 0 -2px 10px rgba(0,0,0,0.2);
  }
  .tab-bar-item {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 4px; background: none; border: none; cursor: pointer;
    font-family: var(--font-sans); font-size: 0.65rem; font-weight: 500;
    color: var(--color-text-secondary); transition: color 0.2s ease-in-out;
    text-decoration: none;
  }
  .tab-bar-item .w-6 { width: 1.4rem; height: 1.4rem; }
  .tab-bar-item.active { color: var(--color-primary); }

  /* Explore Panel */
  #mobile-explore-panel {
    position: fixed; inset: 0; background-color: var(--color-background);
    z-index: 2000; display: flex; align-items: center; justify-content: center;
    opacity: 0; transform: scale(1.05); pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
  }
  #mobile-explore-panel.visible { opacity: 1; transform: scale(1); pointer-events: auto; }
  #mobile-explore-panel .panel-content { text-align: center; }
  #mobile-explore-panel .panel-title {
    font-family: var(--font-serif); font-size: 1.2rem;
    color: var(--color-text-secondary); margin-bottom: 2rem;
  }
  #mobile-explore-panel .panel-links { list-style: none; padding: 0; margin: 0; }
  #mobile-explore-panel .panel-links a {
    display: block; text-decoration: none; color: var(--color-text-primary);
    font-size: 2rem; font-weight: 600; padding: 0.75rem 1rem;
    transition: color 0.2s ease, transform 0.2s ease;
  }
  #mobile-explore-panel .panel-links a:hover { color: var(--color-primary); transform: scale(1.05); }
  #mobile-explore-panel #mobile-explore-close {
    position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%);
    background: none; border: none; color: var(--color-text-secondary); opacity: 0.7;
  }

  /* Bottom Sheet */
  #mobile-sheet-backdrop {
    position: fixed; top: 0; left: 0; right: 0; bottom: 65px;
    background-color: rgba(0, 0, 0, 0.4); z-index: 3001; opacity: 0;
    transition: opacity 0.4s ease; pointer-events: none;
  }
  #mobile-sheet-backdrop.visible { opacity: 1; pointer-events: auto; }
  #mobile-bottom-sheet {
    position: fixed; bottom: 65px; left: 0; right: 0; z-index: 3000;
    background-color: var(--color-background); color: var(--color-text-primary);
    border-top-left-radius: 1.5rem; border-top-right-radius: 1.5rem;
    max-height: 85vh; display: flex; flex-direction: column;
    transform: translateY(calc(100% + 65px));
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 -5px 20px rgba(0,0,0,0.1);
  }
  #mobile-bottom-sheet.visible { transform: translateY(0); }
  .mbs-handle-bar {
    width: 40px; height: 4px; background-color: var(--color-border);
    border-radius: 2px; margin: 0.75rem auto 0; flex-shrink: 0;
  }
  .mbs-header { padding: 1rem 1.5rem; border-bottom: 1px solid var(--color-border); flex-shrink: 0; }
  .mbs-view { display: none; }
  .mbs-view.visible { display: block; }
  .mbs-content { padding: 1rem 1.5rem 1.5rem; overflow-y: auto; }

  /* Bottom Sheet: Logged-Out View */
  .mbs-segmented-control {
    display: flex; width: 100%; background-color: var(--color-surface);
    border-radius: 0.5rem; padding: 4px; border: 1px solid var(--color-border);
  }
  .mbs-segment-btn {
    flex: 1; padding: 0.5rem; border: none; background-color: transparent;
    color: var(--color-text-secondary); font-weight: 600; font-size: 0.875rem;
    border-radius: 0.375rem; cursor: pointer; transition: all 0.2s ease-in-out;
  }
  .mbs-segment-btn.active {
    background-color: var(--color-primary); color: white; box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  }
  #mbs-logged-out-view .auth-input { background-color: var(--color-surface); }
  html[data-theme='dark'] .mbs-segment-btn.active { color: var(--color-background); }

  /* Bottom Sheet: Logged-In View */
  #mbs-logout-btn { background: none; border: none; padding: 0; font-weight: 500; }
  .mbs-account-tabs { display: flex; gap: 0.5rem; padding: 0.75rem 1.5rem; border-bottom: 1px solid var(--color-border); }
  .mbs-account-tab-btn {
    flex-grow: 1; padding: 0.6rem; border-radius: 99px;
    border: 1px solid var(--color-border); background-color: transparent;
    color: var(--color-text-secondary); font-weight: 600;
    transition: all 0.2s ease; position: relative;
  }
  .mbs-account-tab-btn.active {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary);
  }
  .mbs-cart-count {
    position: absolute; top: -5px; right: -5px; background-color: var(--color-primary);
    color: white; font-size: 10px; width: 18px; height: 18px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center; font-weight: bold;
    transform: scale(0); transition: transform 0.2s ease;
  }
  html[data-theme='dark'] .mbs-cart-count { color: var(--color-background); }
  .mbs-cart-count.visible { transform: scale(1); }
  .mbs-tab-content { display: none; }
  .mbs-tab-content.active { display: block; }
  .mbs-account-link {
    display: flex; align-items: center; gap: 1rem; padding: 1rem;
    margin: 0 -1rem; text-decoration: none; font-weight: 500;
    color: var(--color-text-primary); border-radius: 0.5rem;
    transition: background-color 0.2s ease;
  }
  .mbs-account-link:hover { background-color: var(--color-surface); }
  .mbs-account-link svg { width: 20px; height: 20px; color: var(--color-text-secondary); }

  /* Empty Cart Mobile Styles */
  .woocommerce-mini-cart__empty-message { padding: 3rem 1.5rem !important; font-size: 1.125rem; line-height: 1.6; font-weight: 500; }
  .kai-empty-cart-button {
    display: inline-block; background-color: var(--color-primary); color: white !important;
    font-weight: 600; padding: 0.75rem 1.5rem; border-radius: 999px;
    text-decoration: none; margin-top: 1.5rem; transition: transform 0.2s ease, box-shadow 0.2s ease;
  }
  html[data-theme='dark'] .kai-empty-cart-button { color: var(--color-background) !important; }
  .kai-empty-cart-button:hover { transform: scale(1.05); box-shadow: 0 5px 15px rgba(0,0,0,0.1); }

  /* Command Palette Mobile Override */
  #command-palette-overlay.visible #command-palette {
      margin-top: 0; max-width: 100%; width: 100%; height: 100%; border-radius: 0;
      animation: none; /* fade-in 0.3s ease-out; */
  }
  #command-palette-results { max-height: calc(100vh - 100px); }
}