/* Basic reset and fonts */
* { 
  box-sizing: border-box; 
  margin: 0; 
  padding: 0;
  font-family: Arial, sans-serif !important;
}

@font-face {
  font-family: AlibabaPuHuiTi;
  src: url(https://static.igem.wiki/teams/5913/fonts/alibabafont.ttf);
  font-display: swap;
}

/* Color variables: Sky blue theme (daytime sky) */
:root {
  --bg: #e6f3ff;  /* Match navbar sky blue */
  --text: #1a365d;  /* Deep blue text */
  --link: #2b6cb0;

  --nav-bg: #e6f3ff;  /* Light sky blue navbar */
  --nav-text: #1a365d;
  --nav-link: #1a365d;
  --nav-link-hover: #2b6cb0;   /* Use deep blue highlight on hover */
  --nav-bg-alpha: rgba(230, 243, 255, 0.9); /* Glass-morphism background (light sky blue) */
  --nav-border: rgba(26, 54, 93, 0.1);
  --nav-shadow: rgba(0, 100, 200, 0.1);
}

:root[data-theme="dark"] {
  --bg: #191970;  /* Deep blue background (midnight blue) */
  --text: #e6f3ff;  /* Light blue text */
  --link: #90cdf4;

  --nav-bg: #1a202c;  /*  */
  --nav-text: #e6f3ff;
  --nav-link: #e6f3ff;
  --nav-link-hover: #90cdf4;
  --nav-bg-alpha: rgba(26, 32, 44, 0.8);
  --nav-border: rgba(230, 243, 255, 0.1);
  --nav-shadow: rgba(0, 0, 50, 0.4);
}

/* Body styles */
body { 
  padding-top: 120px; /* Match .my-nav height - updated to accommodate larger logo */
  margin: 0;
  background: var(--bg); /* Use theme background color */
  transition: background 0.3s ease; /* Smooth theme transition */
}

/* Navigation bar - fixed top */
.my-nav {
  position: fixed !important;
  top: 0; 
  left: 0; 
  right: 0;
  height: 120px;              /* Match JS navbox.style.height - increased to fit larger logo */
  display: flex !important;
  align-items: center;
  justify-content: space-between;
  padding: 0 5px 0 0;         /* Left padding set to 0 to allow logo to shift left */
  background: var(--nav-bg-alpha);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: none;
  z-index: 1000 !important;
  transition: background 0.2s linear, box-shadow 0.2s linear, height 0.2s linear;
  visibility: visible !important;
  opacity: 1 !important;
}

/* Scrolled state with shadow */
.my-nav.scrolled {
  background: var(--nav-bg);
  box-shadow: 0 4px 18px -6px var(--nav-shadow);
}

/* LOGO container - links to menu.html */
.my-nav .logo-container {
  display: flex;
  align-items: center;
  margin-left: -20px;        /* Move significantly left for better logo positioning */
}

.my-nav .logo-container .icon {
  display: inline-block;
  width: 300px;              /* Logo width - increased size */
  height: 115px;             /* Logo height - increased size */
  text-decoration: none;
  background-image: url(https://static.igem.wiki/teams/5913/picture/menu.webp);
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center center;
  transition: opacity 0.3s ease;
}

.my-nav .logo-container .icon:hover {
  opacity: 0.8;
}

/* Navigation menu list */
.my-navbar {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 22px;                   /* Spacing between menu items */
  margin: 0 10px 0 20px;
}

/* Menu item container */
.my-navbar > li {
  position: relative;          /* Required for dropdown positioning */
  white-space: nowrap;
}

/* Menu item links */
.my-navbar > li > a {
  color: var(--nav-link);
  font-family: AlibabaPuHuiTi, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  text-decoration: none;
  padding: 10px 6px;
  display: inline-block;
  transition: color 0.15s linear, opacity 0.2s ease;
}

/* Hover and active states */
.my-navbar > li > a:hover,
.my-navbar > li > a:focus {
  color: var(--nav-link-hover);
}
.my-navbar > li > a.active {
  color: var(--nav-link-hover);
  border-bottom: 2px solid var(--nav-link-hover); /* Active page indicator */
}

/* Dropdown menu */
.son {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 120px;
  max-width: 200px;   /* Limit dropdown width */
  list-style: none;
  background: var(--nav-bg);
  border: 1px solid var(--nav-border);
  box-shadow: 0 12px 28px -12px var(--nav-shadow);
  border-radius: 10px;
  padding: 6px 0;
  display: none;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 9999; /* High z-index for dropdown */
}

/* Right-align dropdowns for last two menu items */
.my-navbar > li:last-child .son,
.my-navbar > li:nth-last-child(2) .son {
  right: -24px; /* Push further right */
  left: auto;
}

/* Ensure menu items have proper z-index */

/* Set z-index for menu items */
.my-navbar > li {
  z-index: 10001;
}

/* Dropdown hover behavior controlled by JavaScript instead of CSS hover */
/* .my-navbar > li:hover .son,
.my-navbar > li:focus-within .son {
  display: block;
  opacity: 1;
  transform: translateY(0);
} */

.son li a {
  display: block;
  padding: 10px 14px;
  color: var(--text);
  font-size: 16px;
  text-decoration: none;
  transition: background-color 0.15s ease, color 0.15s ease;
  white-space: nowrap;    /* Prevent text wrapping */
  overflow: visible;       /* Allow overflow */
  text-overflow: unset;    /* No ellipsis */
  max-width: 180px;        /* Maximum width */
}
.son li a:hover,
.son li a:focus {
  background: rgba(0,0,0,0.06);
  color: var(--text);
}

/* Auxiliary navigation items (search, theme) */
.my-navbar .aux {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-left: 8px;
}

/* Theme color picker */
.color-picker {
  position: relative;
  margin-right: 1em;
  cursor: pointer;
}

.color-button {
  align-items: center;
  height: 100%;
  text-decoration: none;
  display: flex;
  align-items: center;
  padding: 6px 10px;
  border: 1px solid var(--nav-border);
  border-radius: 8px;
  background: transparent;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.color-button:hover {
  color: var(--nav-link-hover);
  border-color: var(--nav-link-hover);
}

.iconfont {
  font-size: 1.4rem;
  color: var(--nav-link);
}

.color-picker-menu {
  position: absolute;
  top: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 150;
  background: var(--nav-bg);
  border: 1px solid var(--nav-border);
  border-radius: 8px;
  box-shadow: 0 12px 28px -12px var(--nav-shadow);
  min-width: 125px;
  padding: 1em;
}

.mode-options .title {
  margin-top: 0;
  margin-bottom: 0.6rem;
  font-weight: bold;
  color: var(--text);
  font-size: 14px;
}

.color-mode-options {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}

.color-mode-options li {
  flex: 1;
  text-align: center;
  font-size: 12px;
  color: var(--text);
  line-height: 18px;
  padding: 3px 6px;
  border-top: 1px solid #666;
  border-bottom: 1px solid #666;
  background-color: var(--nav-bg);
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.color-mode-options li.dark {
  border-radius: 4px 0 0 4px;
  border-left: 1px solid #666;
}

.color-mode-options li.light {
  border-radius: 0 4px 4px 0;
  border-right: 1px solid #666;
}

.color-mode-options li.active {
  background-color: #0d6efd;
  color: #fff;
}

.color-mode-options li:not(.active) {
  border-right: 1px solid #666;
}

/* Search box container */
.search-box {
  display: inline-block;
  position: relative;
  margin-right: 1rem;
}

.search-box .iconfont {
  position: absolute;
  top: 50%;
  left: 0.6rem;
  transform: translateY(-50%);
  z-index: 1;
  color: var(--nav-link);
  font-size: 1rem;
}

.search-box input {
  font-family: AlibabaPuHuiTi, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  font-weight: 600;
  cursor: text;
  width: 10rem;
  height: 2rem;
  color: var(--nav-link);
  display: inline-block;
  border: 1px solid var(--nav-border);
  border-radius: 8px;
  font-size: 0.9rem;
  line-height: 2rem;
  padding: 0 0.5rem 0 2rem;
  outline: none;
  transition: all 0.2s ease;
  background: rgba(255, 255, 255, 0.3);
}

.search-box input:focus {
  cursor: auto;
  border-color: #0d6efd;
  background: rgba(255, 255, 255, 0.5);
}

.search-box .suggestions {
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  width: 20rem;
  position: absolute;
  top: 1.5rem;
  border: 1px solid var(--nav-border);
  border-radius: 6px;
  padding: 0.4rem;
  list-style-type: none;
  box-shadow: 0 12px 28px -12px var(--nav-shadow);
  z-index: 1001;
}

.search-box .suggestion {
  line-height: 1.4;
  padding: 0.4rem 0.6rem;
  border-radius: 4px;
  cursor: pointer;
}

.search-box .suggestion a {
  white-space: normal;
  color: var(--text);
  text-decoration: none;
  display: block;
}

.search-box .suggestion .page-title {
  font-weight: 600;
}

.search-box .suggestion .header {
  font-size: 0.9em;
  margin-left: 0.25em;
}

.search-box .suggestion.focused {
  background-color: var(--nav-border);
}

.search-box .suggestion.focused a {
  color: #0d6efd;
}

/* Large screen responsive styles */
@media screen and (min-width: 1800px) {
  .my-nav { height: 135px; }                /* Increased height for larger logo */
  body { padding-top: 135px; }              /* Match navbar height */
  .my-navbar > li > a { font-size: 22px; }
  .my-nav .logo-container .icon { height: 130px; width: 340px; }
  .my-nav .logo-container { margin-left: -25px; }
}

@media screen and (max-width: 1280px) {
  .my-nav { height: 95px; padding: 0 10px; }
  body { padding-top: 95px; }
  .my-navbar { gap: 16px; }
  .my-navbar > li > a { font-size: 18px; }
  .my-nav .logo-container .icon { height: 90px; width: 220px; }
  .my-nav .logo-container { margin-left: -15px; }
}

/* Mobile responsive - hide navigation */
@media screen and (max-width: 830px) {
  .my-navbar { 
    display: none; 
  }
  
  .my-navbar .search-li { 
    display: none; 
  }
  
  .my-navbar .theme-li { 
    display: none; 
  }
}

@media screen and (max-width: 1280px) {
  .search-box input {
    width: 8rem;
  }
  
  .search-box .suggestions {
    width: 16rem;
  }
}

@media screen and (max-width: 1000px) {
  .search-box input {
    width: 6rem;
  }
  
  .search-box .suggestions {
    width: 14rem;
  }
}

/* Theme switcher item */
.my-navbar .theme-li {
  display: inline-flex;
  align-items: center;
}

/* Search input sizing */
.my-navbar .search-li #search { min-width: 220px; }
@media (max-width: 1280px) { .my-navbar .search-li #search { min-width: 180px; } }

/* Pagefind search input styling */
.pagefind-ui__search-input {
  background: rgba(255,255,255,0.3);
  color: var(--nav-link);
  border: 1px solid var(--nav-border);
  border-radius: 8px;
  height: 34px;
  padding: 0 10px;
}
:root[data-theme="dark"] .pagefind-ui__search-input {
  background: rgba(255,255,255,0.08);
  color: var(--nav-link);
}

/* Hide search and theme on mobile (below 830px) */
@media (max-width: 830px) {
  .my-navbar .search-li { display: none; }
  .my-navbar .theme-li { display: none; } /* Hide theme switcher on mobile */
}