/* ── Site header ────────────────────────────────────────────────────── */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gutter);
  /* Both states use linear-gradient so CSS can interpolate between them */
  background: linear-gradient(to bottom, var(--color-bg) 0%, transparent 100%);
  z-index: var(--z-overlay);
  transition: background var(--transition-slow), box-shadow var(--transition-base);
}

.site-header--scrolled {
  /* Same gradient structure → smooth animated transition */
  background: linear-gradient(to bottom, var(--color-surface) 0%, var(--color-surface) 100%);
  backdrop-filter: blur(16px) saturate(1.6);
  -webkit-backdrop-filter: blur(16px) saturate(1.6);
  box-shadow: 0 1px 0 var(--color-border);
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

/* SVG logo — inline, colored via CSS classes */
.site-header__logo-svg {
  width: 56px;
  height: 28px;
  flex-shrink: 0;
}

.site-header__logo-svg .antennas,
.site-header__logo-svg .tv_border,
.site-header__logo-svg .vura_v  { fill: var(--color-text); }

.site-header__logo-svg .tv_screen {
  fill: var(--color-accent);
  fill-opacity: 0.85;
}

/* Wordmark */
.site-header__logo-text {
  font-size: var(--text-xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-text);
}

.site-header__logo-dot {
  color: var(--color-accent);
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.site-header__nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.site-header__nav-link:hover {
  color: var(--color-text);
}

/* ── Search ─────────────────────────────────────────────────────────── */

.site-header__search {
  display: flex;
  align-items: center;
  position: relative;
  margin-right: auto;
  margin-left: var(--space-6);
}

.site-header__search-trigger {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
  flex-shrink: 0;
  z-index: 1;
}

.site-header__search-trigger:hover { color: var(--color-text); }

.site-header__search-input {
  width: 0;
  opacity: 0;
  padding: 0;
  border: none;
  background: var(--color-surface-2);
  color: var(--color-text);
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  outline: none;
  transition: width var(--transition-base), opacity var(--transition-base), padding var(--transition-base);
  pointer-events: none;
}

.site-header__search-input::placeholder { color: var(--color-text-muted); }

.site-header__search-close {
  display: none;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  transition: color var(--transition-fast);
}

.site-header__search-close:hover { color: var(--color-text); }

/* Open state */
.site-header__search--open .site-header__search-input {
  width: 240px;
  opacity: 1;
  padding: 6px var(--space-3);
  pointer-events: auto;
}

.site-header__search--open .site-header__search-close { display: flex; }
.site-header__search--open .site-header__search-trigger { color: var(--color-text); }

@media (max-width: 767px) {
  .site-header__search {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    margin: 0;
    padding: 0 var(--space-4);
    background: var(--color-bg);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
    z-index: 2;
  }

  .site-header__search--open {
    opacity: 1;
    pointer-events: auto;
  }

  .site-header__search--open .site-header__search-input {
    width: 100%;
    flex: 1;
  }
}

/* ── User dropdown ──────────────────────────────────────────────────── */

.site-header__user-menu {
  position: relative;
}

.site-header__user-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
  color: var(--color-text);
}

.site-header__user-trigger:hover {
  background: var(--color-surface-2);
}

.site-header__user-avatar {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-full);
  background: var(--color-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

.site-header__username {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
}

.site-header__dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  min-width: 180px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  z-index: var(--z-overlay);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.site-header__user-menu--open .site-header__dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.site-header__dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

.site-header__dropdown-item:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

.site-header__dropdown-item--danger:hover {
  background: color-mix(in srgb, var(--color-danger, #e53e3e) 10%, transparent);
  color: var(--color-danger, #e53e3e);
}

.site-header__dropdown-sep {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-1) var(--space-2);
}

.site-header__user {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Hamburger — mobile only */
.site-header__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
}

.site-header__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-fast), width var(--transition-base);
  transform-origin: center;
}

/* Animate hamburger → X when nav is open */
.site-header__hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.site-header__hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.site-header__hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav overlay */
@media (max-width: 767px) {
  .site-header__nav {
    position: fixed;
    inset: 0;
    flex-direction: column;
    justify-content: center;
    background: var(--color-bg);
    gap: var(--space-8);
    font-size: var(--text-xl);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: var(--z-overlay);
  }

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

  .site-header__hamburger {
    display: flex;
    z-index: calc(var(--z-overlay) + 1);
  }
}

/* ── Site main ──────────────────────────────────────────────────────── */

.site-main {
  min-height: 100vh;
  animation: pageFadeIn 0.28s ease-out both;
}

.site-main--exiting {
  animation: pageFadeOut 0.18s ease-in both !important;
  pointer-events: none;
}

@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

@keyframes pageFadeOut {
  from { opacity: 1; }
  to   { opacity: 0; }
}

/* ── Site footer ────────────────────────────────────────────────────── */

.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-8) var(--gutter);
  text-align: center;
}

.site-footer__inner {
  max-width: var(--content-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.site-footer__links {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  justify-content: center;
}

.site-footer__link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.site-footer__link:hover {
  color: var(--color-text);
}

.site-footer__copy {
  font-size: var(--text-sm);
  color: var(--color-text-subtle);
}