/* design tokens */
:root {
  --kd-grad:      linear-gradient(135deg, #0ef5c8 0%, #05c5f0 28%, #05aef1 55%, #1a6fe8 100%);
  --kd-blue:      #05aef1;
  --kd-blue-dark: #0490cc;
  --kd-blue-soft: rgba(5, 174, 241, 0.10);
  --kd-blue-bdr:  rgba(5, 174, 241, 0.20);
  --kd-teal:      #0ef5c8;
  --kd-navy:      #0d1b2e;
  --kd-border:    #dde9f5;
  --t:            0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: 'Roboto', sans-serif;
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { text-decoration: none; }

/* home hero gradient wrapper */
.home-hero-wrap {
  background: var(--kd-grad);
}

/* header base */
#header {
  width: 100%;
  height: 80px;
  left: 0;
  right: 0;
  z-index: 9999;
  transition: background var(--t), box-shadow var(--t);
}

/* header inner layout */
.kd-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  padding: 0 24px;
  max-width: 1400px;
  margin: 0 auto;
}

/* non-home pages: fixed white header */
body:not(.page-home) #header {
  position: fixed;
  top: 0;
  background: #fff;
  border-bottom: 1px solid #e6eef7;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.07);
}

body:not(.page-home) {
  padding-top: 80px;
}

/* home page: transparent so gradient shows from wrapper */
body.page-home #header {
  position: relative;
  background: transparent;
  border-bottom: none;
  box-shadow: none;
}

/* home page: fixed white after scroll */
body.page-home #header.scrolled {
  position: fixed;
  top: 0;
  background: #fff;
  border-bottom: 1px solid #e6eef7;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.07);
}

/* logo */
#header .logo img {
  height: 56px;
  width: auto;
}

/* nav top bar (mobile only - logo + close) */
.kd-nav-top {
  display: none;
}

/* desktop nav */
#navmenu ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 2px;
}

#navmenu ul li a,
#navmenu ul li .kd-drop-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: #2a3a4e;
  font-size: 14px;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: 7px;
  transition: var(--t);
  white-space: nowrap;
}

#navmenu ul li a:hover,
#navmenu ul li a.active,
#navmenu ul li .kd-drop-toggle:hover {
  color: var(--kd-blue);
  background: var(--kd-blue-soft);
}

/* nav white on home gradient before scroll */
body.page-home #header:not(.scrolled) #navmenu ul li a,
body.page-home #header:not(.scrolled) .kd-drop-toggle {
  color: #fff;
}

body.page-home #header:not(.scrolled) #navmenu ul li a:hover,
body.page-home #header:not(.scrolled) .kd-drop-toggle:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.18);
}

/* publications dropdown */
.kd-drop { position: relative; }

.kd-drop-toggle {
  cursor: pointer;
  user-select: none;
}

.kd-chev {
  font-size: 11px;
  transition: transform var(--t);
}

.kd-drop.open .kd-chev {
  transform: rotate(180deg);
}

.kd-drop-menu {
  display: none;
  flex-direction: column;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: #fff;
  border: 1px solid var(--kd-border);
  border-radius: 16px;
  padding: 8px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  width: max-content;
  min-width: 160px;
  z-index: 9999;
}

.kd-drop.open .kd-drop-menu {
  display: flex;
}

.kd-drop-menu a {
  display: block;
  width: 100%;
  padding: 9px 14px;
  border-radius: 7px;
  color: #2a3a4e !important;
  font-size: 13.5px;
  font-weight: 500;
  transition: var(--t);
  white-space: nowrap;
}

.kd-drop-menu a:hover {
  background: var(--kd-blue-soft);
  color: var(--kd-blue) !important;
}

/* book a demo pill */
.nav-book {
  display: inline-flex;
  align-items: center;
  background: var(--kd-blue);
  color: #fff !important;
  padding: 9px 22px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(5, 174, 241, 0.28);
  transition: var(--t);
  margin-left: 20px;
  flex-shrink: 0;
  white-space: nowrap;
}

.nav-book:hover {
  background: var(--kd-blue-dark);
  color: #fff !important;
  transform: translateY(-1px);
}

.nav-book__short {
  display: none;
}

/* home page: frosted Book a Demo on gradient */
body.page-home #header:not(.scrolled) .nav-book {
  background: rgba(255, 255, 255, 0.20);
  border: 1.5px solid rgba(255, 255, 255, 0.70);
  box-shadow: none;
}

body.page-home #header:not(.scrolled) .nav-book:hover {
  background: rgba(255, 255, 255, 0.35);
}

/* logo border on home gradient */
body.page-home #header:not(.scrolled) .logo {
  border: 2px solid rgba(255, 255, 255, 0.60);
  border-radius: 10px;
  padding: 4px 10px;
}

/* publications dropdown no blue box */
#navmenu ul li.kd-drop .kd-drop-toggle.active,
#navmenu ul li.kd-drop.active .kd-drop-toggle {
  background: none !important;
}

/* mobile toggle - hidden on desktop */
.mob-tog {
  display: none;
  font-size: 26px;
  color: #2a3a4e;
  cursor: pointer;
  line-height: 1;
}

body.page-home #header:not(.scrolled) .mob-tog {
  color: #fff;
}

/* mobile nav */
@media (max-width: 1100px) {

  .mob-tog {
    display: block;
  }

  .nav-book {
    padding: 8px 18px;
    font-size: 13.5px;
    margin-left: 0;
    margin-right: 12px;
    box-shadow: 0 3px 10px rgba(5, 174, 241, 0.28);
  }

  #navmenu {
    display: none;
    position: fixed;
    inset: 0;
    background: #fff;
    z-index: 10000;
    overflow-y: auto;
    flex-direction: column;
  }

  #navmenu.open {
    display: flex;
  }

  /* nav top bar: logo + close */
  .kd-nav-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    border-bottom: 1px solid var(--kd-border);
    flex-shrink: 0;
  }

  .kd-nav-top .logo img {
    height: 52px;
    width: auto;
  }

  .kd-close {
    font-size: 28px;
    color: #2a3a4e;
    cursor: pointer;
    line-height: 1;
  }

  #navmenu ul {
    flex-direction: column;
    gap: 0;
    padding: 8px 0;
  }

  #navmenu ul li {
    border-bottom: 1px solid var(--kd-border);
  }

  #navmenu ul li:last-child {
    border-bottom: none;
  }

  #navmenu ul li a,
  #navmenu ul li .kd-drop-toggle {
    display: flex;
    padding: 16px 24px;
    font-size: 16px;
    font-weight: 500;
    color: #2a3a4e;
    border-radius: 0;
    white-space: normal;
    width: 100%;
  }

  #navmenu ul li a:hover,
  #navmenu ul li a.active {
    background: var(--kd-blue-soft);
    color: var(--kd-blue);
  }

  .kd-drop-toggle {
    justify-content: space-between;
  }

  /* mobile dropdown */
  .kd-drop-menu {
    position: static;
    display: none;
    flex-direction: column;
    box-shadow: none;
    border: none;
    border-radius: 0;
    padding: 0;
    width: 100%;
    background: #f8fbff;
  }

  .kd-drop.open .kd-drop-menu {
    display: flex;
  }

  .kd-drop-menu a {
    padding: 13px 36px;
    border-radius: 0;
    border-bottom: 1px solid var(--kd-border);
    font-size: 14.5px;
    color: #3a5070 !important;
  }

  .kd-drop-menu a:last-child {
    border-bottom: none;
  }

  .kd-drop-menu a:hover {
    background: var(--kd-blue-soft);
    color: var(--kd-blue) !important;
  }
}

/* phone width: shrink pill further and swap to short label */
@media (max-width: 576px) {

  .nav-book {
    padding: 7px 14px;
    font-size: 12.5px;
  }

  .nav-book__full {
    display: none;
  }

  .nav-book__short {
    display: inline;
  }
}