/* ===================================================================
   Virtality Header Navigation Styles
   Shared between landing page and dashboard
   =================================================================== */

/* Header Variables */
:root {
  --header-height: 4rem;
  --header-bg: #ffffff;
  --header-text: #111827;
  --header-border: #e5e7eb;
  --header-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  --header-shadow-scrolled: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* Site Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--header-bg);
  border-bottom: 1px solid var(--header-border);
  z-index: 1000;
  transition: box-shadow 0.2s ease;
}

.site-header.is-scrolled {
  box-shadow: var(--header-shadow-scrolled);
}

.site-header__container {
  max-width: 1400px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
}

/* Brand */
.site-header__brand {
  display: flex;
  align-items: center;
}

.brand-logo-link {
  display: block;
  line-height: 0;
  text-decoration: none;
}

.brand-logo-svg {
  height: 2.5rem; /* 40px */
  width: auto;
  display: block;
  transition: transform 0.2s ease;
}

.brand-logo-link:hover .brand-logo-svg {
  transform: scale(1.05);
}

/* Legacy text logo (fallback) */
.brand-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--header-text);
  margin: 0;
  background: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navigation */
.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav__link {
  color: var(--header-text);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s ease;
  position: relative;
}

.site-nav__link:hover {
  color: #10b981;
}

.site-nav__link::after {
  content: '';
  position: absolute;
  bottom: -0.375rem;
  left: 0;
  width: 0;
  height: 2px;
  background: #10b981;
  transition: width 0.2s ease;
}

.site-nav__link:hover::after {
  width: 100%;
}

/* Mobile Toggle Button */
.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 2rem;
  height: 1.5rem;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.site-header__toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--header-text);
  transition: all 0.3s ease;
}

.site-header__toggle.is-active span:nth-child(1) {
  transform: translateY(0.625rem) rotate(45deg);
}

.site-header__toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.site-header__toggle.is-active span:nth-child(3) {
  transform: translateY(-0.625rem) rotate(-45deg);
}

/* Dashboard-specific Header Styles */
.dashboard-header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
}

.dashboard-header .site-header__container {
  padding: 0 1rem;
}

.dashboard-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.home-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  color: var(--header-text);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 0.375rem;
  transition: background 0.2s ease;
}

.home-link:hover {
  background: #f3f4f6;
}

/* Dropdown Menu */
.nav-dropdown {
  position: relative;
}

.nav-dropdown__button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: transparent;
  border: 1px solid var(--header-border);
  border-radius: 0.375rem;
  color: var(--header-text);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.nav-dropdown__button:hover {
  background: #f3f4f6;
  border-color: #d1d5db;
}

.nav-dropdown__menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  min-width: 10rem;
  background: white;
  border: 1px solid var(--header-border);
  border-radius: 0.5rem;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-0.5rem);
  transition: all 0.2s ease;
  z-index: 1001;
}

.nav-dropdown.is-open .nav-dropdown__menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown__menu a {
  display: block;
  padding: 0.625rem 1rem;
  color: var(--header-text);
  font-size: 0.9375rem;
  text-decoration: none;
  border-radius: 0.375rem;
  transition: background 0.2s ease;
}

.nav-dropdown__menu a:hover {
  background: #f3f4f6;
}

/* Responsive Design */
@media (max-width: 768px) {
  .site-header__container {
    padding: 0 1rem;
  }

  .site-header__toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: white;
    flex-direction: column;
    justify-content: flex-start;
    padding: 2rem;
    gap: 1rem;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
  }

  .site-nav.is-open {
    transform: translateX(0);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }

  .site-nav__list li {
    width: 100%;
  }

  .site-nav__link {
    display: block;
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--header-border);
  }

  .site-nav__link::after {
    display: none;
  }

  .btn--primary {
    width: 100%;
    text-align: center;
  }

  .dashboard-nav {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .home-link,
  .nav-dropdown__button {
    width: 100%;
    justify-content: center;
  }

  .nav-dropdown__menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    margin-top: 0.5rem;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  .site-header,
  .site-nav,
  .site-nav__link::after,
  .site-header__toggle span,
  .nav-dropdown__menu {
    transition: none !important;
  }
}

/* Print */
@media print {
  .site-header {
    position: static;
    border-bottom: 2px solid #000;
  }

  .site-nav,
  .site-header__toggle {
    display: none !important;
  }
}