/* ========================================
   Layout — Header, Main, Footer
   ======================================== */

/* --- Page wrapper --- */
body {
  display: flex;
  flex-direction: column;
}

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--sp-4);
}

/* ============================================
   SITE HEADER — sticky, golden border-bottom
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: var(--color-neutral-950);
  border-bottom: 2px solid var(--color-primary);
}

.site-header__inner {
  display: flex;
  align-items: center;
  height: var(--header-height);
  gap: var(--sp-4);
}

/* --- Brand --- */
.site-header__brand {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-shrink: 0;
  color: var(--color-neutral-300);
  transition: color var(--transition-fast);
}

.site-header__brand:hover {
  color: var(--color-primary-light);
}

.site-header__logo {
  height: 32px;
  width: auto;
}

.site-header__title {
  font-size: var(--text-base);
  font-weight: 700;
  text-transform: uppercase;
  color: inherit;
  white-space: nowrap;
}

@media (max-width: 479px) {
  .site-header__title { display: none; }
}

/* --- Main nav --- */
.nav-menu {
  display: none;
  gap: var(--sp-1);
  margin-left: auto;
}

@media (min-width: 768px) {
  .nav-menu {
    display: flex;
  }
}

.nav-menu__item {
  position: relative;
}

.nav-menu__link {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  padding: var(--sp-2) var(--sp-3);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-neutral-100);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-menu__link:hover,
.nav-menu__link:focus-visible {
  color: var(--color-primary-light);
  background: var(--color-neutral-800);
}

.nav-menu__link--active {
  color: var(--color-primary-light);
  background: var(--color-neutral-800);
}

.nav-menu__link--active::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: var(--sp-3);
  right: var(--sp-3);
  height: 2px;
  background: var(--color-primary-light);
}

/* --- Auth buttons --- */
.site-header__auth {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  margin-left: auto;
}

@media (min-width: 768px) {
  .site-header__auth {
    margin-left: 0;
  }
}

/* --- Hamburger --- */
.hamburger {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: none;
  border: none;
  color: var(--color-neutral-100);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.hamburger:hover {
  background: var(--color-neutral-800);
}

@media (min-width: 768px) {
  .hamburger { display: none; }
}

/* --- Mobile nav overlay --- */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-overlay);
  background: var(--color-neutral-950);
  padding: var(--sp-4);
  flex-direction: column;
  gap: var(--sp-2);
  overflow-y: auto;
}

.mobile-nav.is-open {
  display: flex;
}

.mobile-nav__link {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  font-size: var(--text-lg);
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-neutral-100);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.mobile-nav__link:hover,
.mobile-nav__link--active {
  color: var(--color-primary-light);
  background: var(--color-neutral-800);
}

/* ============================================
   PAGE HEADER (tab-bar + title)
   ============================================ */
.page-header {
  background: var(--color-neutral-500);
  padding: var(--sp-4) 0;
  text-align: center;
}

.page-header__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--sp-2);
}

.tab-bar {
  display: flex;
  justify-content: center;
  gap: var(--sp-1);
  margin-top: var(--sp-2);
  flex-wrap: wrap;
}

.tab-bar__link {
  padding: var(--sp-2) var(--sp-4);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-neutral-200);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.tab-bar__link:hover {
  color: var(--color-primary-light);
  background: var(--color-neutral-600);
}

.tab-bar__link--active {
  color: var(--color-primary-light);
  background: var(--color-neutral-700);
}

/* ============================================
   SITE MAIN
   ============================================ */
.site-main {
  flex: 1;
  padding: var(--sp-6) 0;
}

.site-main__content {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--sp-4);
}

/* ============================================
   SITE FOOTER — golden border-top, 3 columns
   ============================================ */
.site-footer {
  background: var(--color-neutral-950);
  border-top: 2px solid var(--color-primary);
  padding: var(--sp-4) 0;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
  align-items: center;
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-neutral-300);
}

@media (min-width: 768px) {
  .site-footer__inner {
    grid-template-columns: auto 1fr auto;
    text-align: left;
  }
}

.site-footer__brand {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  justify-content: center;
  color: var(--color-neutral-300);
  transition: color var(--transition-fast);
}

@media (min-width: 768px) {
  .site-footer__brand { justify-content: flex-start; }
}

.site-footer__brand:hover {
  color: var(--color-primary-light);
}

.site-footer__brand img {
  height: 20px;
  width: auto;
}

.site-footer__center {
  text-align: center;
}

.site-footer__right {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  justify-content: center;
  color: var(--color-neutral-300);
}

@media (min-width: 768px) {
  .site-footer__right { justify-content: flex-end; }
}

.site-footer__right a {
  color: var(--color-neutral-300);
  transition: color var(--transition-fast);
}

.site-footer__right a:hover {
  color: var(--color-primary-light);
}