/* Header styles for Social Event Flow */

.sef-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: linear-gradient(to bottom, rgba(5, 6, 10, 0.98), rgba(5, 6, 10, 0.92));
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

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

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

.sef-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.sef-header__logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 30% 0, #ffe8b1 0, #f4b544 45%, #c58115 85%);
  box-shadow: var(--shadow-soft);
}

.sef-header__logo-icon {
  color: #120a00;
  font-size: 1.1rem;
}

.sef-header__logo-text {
  display: flex;
  flex-direction: column;
}

.sef-header__logo-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.sef-header__logo-subtitle {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
}

/* Navigation */

.sef-header__nav {
  display: flex;
}

.sef-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  list-style: none;
  margin: 0;
  padding: 0;
}

.sef-header__nav-link {
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  position: relative;
}

.sef-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.4rem;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-strong));
  transition: width var(--transition-base) var(--easing-smooth);
}

.sef-header__nav-link:hover,
.sef-header__nav-link:focus-visible {
  color: var(--color-primary-strong);
}

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

.sef-header__nav-item--cta {
  margin-left: var(--space-4);
}

.sef-header__nav-cta {
  font-size: 0.75rem;
  padding-inline: 1.4rem;
  padding-block: 0.6rem;
}

/* Mobile toggle */

.sef-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(10, 10, 18, 0.9);
  color: var(--color-text);
}

.sef-header__toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: #ffffff;
  transition: transform var(--transition-base) var(--easing-smooth),
    opacity var(--transition-base) var(--easing-smooth),
    width var(--transition-base) var(--easing-smooth);
}

.sef-header__toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.sef-header__toggle--open .sef-header__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.sef-header__toggle--open .sef-header__toggle-bar:nth-child(2) {
  opacity: 0;
  width: 0;
}

.sef-header__toggle--open .sef-header__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Responsive layout */

@media (max-width: 768px) {
  .sef-header__inner {
    padding-block: var(--space-2);
  }

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

  .sef-header__nav {
    position: fixed;
    inset-inline: 0;
    top: 64px;
    background: radial-gradient(circle at top, rgba(244, 181, 68, 0.14), transparent 55%),
      rgba(5, 6, 10, 0.98);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base) var(--easing-smooth),
      transform var(--transition-base) var(--easing-smooth);
  }

  .sef-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--space-4) var(--space-5);
    gap: var(--space-3);
  }

  .sef-header__nav-item--cta {
    width: 100%;
    margin-left: 0;
    margin-top: var(--space-3);
  }

  .sef-header__nav-cta {
    width: 100%;
    justify-content: center;
  }

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

@media (max-width: 480px) {
  .sef-header__logo-subtitle {
    display: none;
  }
}