/* Header Styles for Event Pulse Collective */

.epc-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(5, 7, 22, 0.96), rgba(5, 7, 22, 0.9));
  border-bottom: 1px solid var(--color-border-subtle);
}

.epc-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.epc-header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.epc-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
}

.epc-header__logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: var(--gradient-accent);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.15), var(--shadow-glow-primary);
  position: relative;
}

.epc-header__logo-mark::after {
  content: "";
  position: absolute;
  inset: 7px;
  border-radius: inherit;
  background: radial-gradient(circle at 30% 20%, #fff, transparent 55%);
  opacity: 0.9;
}

.epc-header__logo-text {
  font-family: var(--font-display);
  font-size: var(--font-size-md);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* Navigation */

.epc-header__nav {
  display: flex;
  align-items: center;
}

.epc-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.epc-header__nav-link {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  position: relative;
  padding: 0.25rem 0;
}

.epc-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: var(--gradient-accent);
  transition: width var(--transition-normal) var(--transition-bezier);
}

.epc-header__nav-link:hover::after,
.epc-header__nav-link:focus-visible::after {
  width: 100%;
}

.epc-header__nav-item--highlight {
  margin-left: var(--space-2);
}

.epc-header__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.3rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-size: var(--font-size-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  background: var(--gradient-accent);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.22);
  box-shadow: var(--shadow-soft);
}

.epc-header__cta:hover,
.epc-header__cta:focus-visible {
  box-shadow: var(--shadow-glow-primary);
}

/* Mobile Toggle */

.epc-header__toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background-color: rgba(5, 7, 22, 0.96);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  padding: 0;
}

.epc-header__toggle-bar {
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background-color: #ffffff;
  transition: transform var(--transition-normal) var(--transition-bezier),
    opacity var(--transition-fast) var(--transition-bezier),
    width var(--transition-fast) var(--transition-bezier);
}

/* Toggle animated state */

.epc-header__toggle[aria-expanded="true"] .epc-header__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.epc-header__toggle[aria-expanded="true"] .epc-header__toggle-bar:nth-child(2) {
  opacity: 0;
  width: 0;
}

.epc-header__toggle[aria-expanded="true"] .epc-header__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile layout */

@media (max-width: 960px) {
  .epc-header__inner {
    padding-top: var(--space-3);
    padding-bottom: var(--space-3);
  }

  .epc-header__toggle {
    display: inline-flex;
  }

  .epc-header__nav {
    position: fixed;
    inset: 0 0 auto 0;
    top: 64px;
    background: radial-gradient(circle at top left, rgba(255, 51, 102, 0.24), transparent 55%),
      rgba(5, 7, 22, 0.97);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-normal) var(--transition-bezier),
      opacity var(--transition-normal) var(--transition-bezier);
  }

  .epc-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-6) var(--space-4) var(--space-6);
    gap: var(--space-3);
  }

  .epc-header__nav-item--highlight {
    width: 100%;
    margin-left: 0;
    margin-top: var(--space-2);
  }

  .epc-header__nav-item--highlight .epc-header__cta {
    width: 100%;
    justify-content: center;
  }

  .epc-header__nav-link {
    font-size: var(--font-size-md);
  }

  .epc-header__nav--open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
}

/* Reduced-motion friendly */

@media (prefers-reduced-motion: reduce) {
  .epc-header__nav,
  .epc-header__toggle-bar {
    transition: none !important;
  }
}