/* ==========================================================================
   MYCLOUD.UNO — ANIMATED HEADER & NAVIGATION STYLES
   ========================================================================== */

:root {
  --header-navy: #1e2433;
  --header-navy-rgb: 30, 36, 51;
  --header-indigo: #6366f1;
  --header-indigo-light: #818cf8;
  --header-indigo-glow: rgba(99, 102, 241, 0.35);
  --header-border-subtle: rgba(255, 255, 255, 0.1);
  --header-border-glow: rgba(99, 102, 241, 0.3);
  --header-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --header-duration: 500ms;
  --progress: 0;
}

/* Header Root & Reserved Space to prevent Layout Shift */
.header-root {
  position: relative;
  width: 100%;
  z-index: 1000;
}

.nav-space-holder {
  height: 72px;
  width: 100%;
  pointer-events: none;
  visibility: hidden;
}

/* Main Nav Header Outer Container (Full Width at Top) */
.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  pointer-events: none;
  background: rgba(var(--header-navy-rgb), 0.96);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  transition:
    transform var(--header-duration) var(--header-ease),
    background-color var(--header-duration) var(--header-ease),
    border-color var(--header-duration) var(--header-ease),
    box-shadow var(--header-duration) var(--header-ease),
    backdrop-filter var(--header-duration) var(--header-ease);
  will-change: transform, background-color;
}

.nav-header[data-visible="false"] {
  transform: translateY(-115%);
}

.nav-header[data-scrolled="true"] {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom-color: transparent;
  box-shadow: none;
}

/* Nav Inner Container (Morphs into Floating Pill) */
.nav-container {
  pointer-events: auto;
  position: relative;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  height: 72px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  border-radius: 0;
  box-shadow: none;
  border: 1px solid transparent;
  transition:
    max-width var(--header-duration) var(--header-ease),
    height var(--header-duration) var(--header-ease),
    margin-top var(--header-duration) var(--header-ease),
    border-radius var(--header-duration) var(--header-ease),
    background-color var(--header-duration) var(--header-ease),
    backdrop-filter var(--header-duration) var(--header-ease),
    border-color var(--header-duration) var(--header-ease),
    box-shadow var(--header-duration) var(--header-ease),
    padding var(--header-duration) var(--header-ease);
}

/* Scrolled state: Floating Pill Mode */
.nav-header[data-scrolled="true"] .nav-container {
  max-width: 960px;
  width: calc(100% - 32px);
  margin-top: 12px;
  height: 56px;
  padding: 0 20px;
  border-radius: 9999px;
  background: rgba(var(--header-navy-rgb), 0.82);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow:
    0 16px 36px -8px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(255, 255, 255, 0.06) inset;
}

/* Logo */
.nav-container .logo {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  gap: 2px;
  text-decoration: none;
  z-index: 2;
  transition: transform 200ms ease;
}

.nav-container .logo:hover {
  transform: scale(1.02);
}

.nav-container .logo span {
  color: var(--header-indigo);
}

.nav-container .logo:focus-visible {
  outline: 2px solid var(--header-indigo);
  outline-offset: 4px;
  border-radius: 4px;
}

/* Desktop Navlinks Wrapper & Container */
.navlinks-wrapper {
  display: flex;
  align-items: center;
}

.navlinks {
  position: relative;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 9999px;
  transition: background var(--header-duration) var(--header-ease), border-color var(--header-duration) var(--header-ease);
}

.nav-header[data-scrolled="true"] .navlinks {
  background: transparent;
  border-color: transparent;
}

.nav-link {
  position: relative;
  z-index: 2;
  padding: 6px 18px;
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  border-radius: 9999px;
  transition: color 250ms ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.nav-link:hover,
.nav-link.active {
  color: #ffffff;
}

.nav-link:focus-visible {
  outline: 2px solid var(--header-indigo);
  outline-offset: 2px;
  border-radius: 9999px;
}

/* Liquid Pill Indicator */
.nav-liquid-pill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0;
  background: rgba(99, 102, 241, 0.24);
  border: 1px solid rgba(99, 102, 241, 0.5);
  border-radius: 9999px;
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  box-shadow: 0 0 16px rgba(99, 102, 241, 0.35);
  transition:
    transform 350ms cubic-bezier(0.22, 1, 0.36, 1),
    width 350ms cubic-bezier(0.22, 1, 0.36, 1),
    height 350ms cubic-bezier(0.22, 1, 0.36, 1),
    opacity 250ms ease;
  will-change: transform, width;
}

/* Bottom Bar: Pulse Light & Scroll Progress Bar */
.nav-bottom-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  overflow: hidden;
  pointer-events: none;
  border-bottom-left-radius: inherit;
  border-bottom-right-radius: inherit;
}

/* Pulse Light on Bottom Border */
.nav-pulse-line {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.nav-pulse-line::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 150px;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(99, 102, 241, 0.2) 20%,
    #6366f1 50%,
    #a5b4fc 80%,
    transparent 100%
  );
  filter: drop-shadow(0 0 6px #6366f1);
  animation: pulseDataPacket 7s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  will-change: transform;
}

@keyframes pulseDataPacket {
  0% {
    transform: translateX(-180px);
    opacity: 0;
  }
  5% {
    opacity: 1;
  }
  95% {
    opacity: 1;
  }
  100% {
    transform: translateX(1150px);
    opacity: 0;
  }
}

/* Scroll Progress Bar */
.nav-progress-bar {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, #6366f1, #818cf8, #c084fc);
  transform-origin: left center;
  transform: scaleX(var(--progress, 0));
  opacity: 0;
  transition: opacity 300ms ease;
  box-shadow: 0 0 8px rgba(99, 102, 241, 0.7);
  will-change: transform, opacity;
}

.nav-header[data-scrolled="true"] .nav-progress-bar {
  opacity: 1;
}

/* Mobile Toggle Hamburger Button */
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 8px 10px;
  cursor: pointer;
  color: #ffffff;
  align-items: center;
  justify-content: center;
  transition: background 200ms ease, border-color 200ms ease;
  z-index: 2;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.25);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--header-indigo);
  outline-offset: 2px;
}

.hamburger-box {
  width: 20px;
  height: 14px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hamburger-line {
  width: 100%;
  height: 2px;
  background-color: #ffffff;
  border-radius: 2px;
  transition: transform 300ms var(--header-ease), opacity 200ms ease;
  transform-origin: center;
}

.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile Navigation Menu Drawer */
.mobile-nav-menu {
  display: none;
  position: fixed;
  top: 76px;
  left: 16px;
  right: 16px;
  max-width: 480px;
  margin: 0 auto;
  background: rgba(var(--header-navy-rgb), 0.94);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 24px;
  padding: 16px;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.05) inset;
  z-index: 999;
  opacity: 0;
  transform: translateY(-12px) scale(0.96);
  pointer-events: none;
  transition: opacity 300ms var(--header-ease), transform 300ms var(--header-ease);
}

.mobile-nav-menu.is-open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.mobile-nav-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  padding: 14px 20px;
  font-size: 1rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  border-radius: 14px;
  transition: background 200ms ease, color 200ms ease;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  background: rgba(99, 102, 241, 0.18);
  color: #ffffff;
}

.mobile-nav-link:focus-visible {
  outline: 2px solid var(--header-indigo);
  outline-offset: -2px;
}

/* Mobile Responsive Breakpoint (< 768px) */
@media (max-width: 768px) {
  .navlinks-wrapper {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .mobile-nav-menu {
    display: block;
  }
  .nav-container {
    height: 64px;
    padding: 0 16px;
  }
  .nav-header[data-scrolled="true"] .nav-container {
    height: 54px;
    margin-top: 8px;
    width: calc(100% - 24px);
    padding: 0 16px;
  }
  .nav-space-holder {
    height: 64px;
  }
  .mobile-nav-menu {
    top: 68px;
  }
}

/* Accessibility: Reduced Motion Override */
@media (prefers-reduced-motion: reduce) {
  .nav-header,
  .nav-container,
  .nav-liquid-pill,
  .mobile-nav-menu,
  .hamburger-line,
  .nav-progress-bar {
    transition: none !important;
  }
  .nav-pulse-line::after {
    animation: none !important;
    display: none !important;
  }
}