/**
 * AGNT Unified Header Styles
 * Shared across all pages
 */

/* Header */
header {
  position: sticky !important;
  top: 0 !important;
  z-index: 1000 !important;
  width: 100%;
  background: var(--bg);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid color-mix(in srgb, var(--fg) 10%, transparent);
}

/* Adjust header position when promo banner is visible */
html:has(.promo-banner:not(.hidden)) header {
  top: 32px !important;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-mark {
  height: 30px;
  width: auto;
  /* Logo mark stays the same in both modes (pink color) */
}

.logo {
  height: 40px;
  width: auto;
  display: flex;
  align-items: center;
  transition: filter 0.3s;
}

/* Light mode: invert to make it dark navy */
[data-theme='light'] .logo {
  filter: invert(1) brightness(0.2) sepia(1) saturate(5) hue-rotate(180deg);
}

/* Dark mode: keep white (no filter needed as SVG is already white) */
[data-theme='dark'] .logo {
  filter: none;
}

nav {
  display: flex;
  gap: 40px;
  align-items: center;
}

nav a {
  color: var(--fg);
  text-decoration: none;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  position: relative;
  transition: opacity 0.2s;
}

nav a:hover {
  color: #fff;
  opacity: 1;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--fg);
  transition: width 0.3s;
}

nav a:hover::after {
  width: 100%;
}

/* Nav CTA Button */
.nav-cta {
  padding: 10px 20px;
  border: 2px solid var(--color-green);
  border-radius: 8px;
  background: var(--fg);
  color: var(--bg);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all 0.3s;
  font-family: 'Fira Code', monospace;
  font-weight: 700;
}

.nav-cta:hover {
  background: var(--color-green);
  color: var(--bg);
  transform: translateY(-2px);
}

/* Theme Toggle */
.theme-toggle {
  width: 48px;
  height: 24px;
  border: 2px solid color-mix(in srgb, var(--fg) 10%, transparent);
  border-radius: 16px;
  background: var(--bg);
  cursor: pointer;
  position: relative;
  transition: background 0.3s;
}

.theme-toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--fg);
  transition: transform 0.3s;
}

[data-theme='dark'] .theme-toggle::after {
  transform: translateX(24px);
}

/* Mobile Menu Button - Hidden on desktop */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
  z-index: 1002;
  width: 40px;
  height: 40px;
}

.bar {
  display: block;
  width: 24px;
  height: 2px;
  margin: 5px auto;
  background-color: var(--fg);
  transition: all 0.3s ease-in-out;
}

/* Prevent scrolling when menu is open */
body.menu-open {
  overflow: hidden;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .header-container {
    padding: 15px 20px;
  }

  .logo-container {
    gap: 8px;
  }

  .logo-mark {
    height: 24px;
  }

  .logo {
    height: 28px;
  }

  /* Mobile Menu Button Visible */
  .mobile-menu-btn {
    display: block;
  }

  /* Hamburger Animation */
  .mobile-menu-btn.active .bar:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-btn.active .bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .mobile-menu-btn.active .bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* Navigation Drawer */
  nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: var(--bg);
    flex-direction: column;
    justify-content: center;
    gap: 30px;
    padding: 40px;
    transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.2);
    z-index: 1001;
    border-left: 1px solid color-mix(in srgb, var(--fg) 10%, transparent);
    /* Ensure readability with blurred background support */
    backdrop-filter: blur(20px);
    background: color-mix(in srgb, var(--bg), transparent 5%);
  }

  nav.active {
    right: 0;
  }

  nav a {
    font-size: 16px;
    width: 100%;
    text-align: center;
    padding: 10px 0;
  }

  nav a::after {
    display: none; /* Remove underline hover effect on mobile */
  }

  .nav-cta {
    width: 100%;
    text-align: center;
    padding: 14px;
    margin-top: 10px;
  }

  .theme-toggle {
    margin-top: 20px;
  }
}