/* =============================================
   HEADER.CSS – Site header & navigation
   ============================================= */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding-block: 18px;
  transition: background-color var(--transition-normal),
              box-shadow var(--transition-normal),
              padding var(--transition-normal);
}

/* Nav links & logo are WHITE on transparent header */
.header .nav__link,
.header .header__logo-name,
.header .header__logo-sub {
  color: rgba(255, 255, 255, 0.92);
}

.header .hamburger__line {
  background-color: rgba(255, 255, 255, 0.92);
}

.header .header__hamburger {
  border-color: rgba(255, 255, 255, 0.35);
}

/* Scrolled – warm beige background */
.header.is-scrolled {
  background-color: rgba(247, 238, 231, 0.97);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-header);
  padding-block: 12px;
}

.header.is-scrolled .nav__link,
.header.is-scrolled .header__logo-name,
.header.is-scrolled .header__logo-sub {
  color: var(--color-text);
}

.header.is-scrolled .hamburger__line {
  background-color: var(--color-primary-dark);
}

.header.is-scrolled .header__hamburger {
  border-color: var(--color-border);
}

/* ---- Inner layout ---- */
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

/* ---- Logo ---- */
.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}

.header__logo-img {
  width: 58px;
  height: 58px;
  object-fit: contain;
  flex-shrink: 0;
  /* White-tinted logo on transparent header */
  transition: filter var(--transition-normal);
}

/* Restore original warm colours when scrolled */
.header.is-scrolled .header__logo-img {
  filter: none;
}

.header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.header__logo-name {
  font-family: var(--font-title);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  transition: color var(--transition-normal);
}

.header__logo-sub {
  font-family: var(--font-body);
  font-size: 0.58rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  transition: color var(--transition-normal);
}

/* ---- Navigation ---- */
.header__nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav__link {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  transition: color var(--transition-fast),
              background-color var(--transition-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1.5px;
  background-color: currentColor;
  opacity: 0.6;
  transition: width var(--transition-normal);
}

.nav__link:hover::after,
.nav__link.is-active::after {
  width: calc(100% - 24px);
}

.header.is-scrolled .nav__link:hover,
.header.is-scrolled .nav__link.is-active {
  color: var(--color-primary);
}

/* ---- CTA button ---- */
.header__cta {
  flex-shrink: 0;
}

/* CTA on transparent header: outlined white */
.header .header__cta .btn--primary {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.55);
  color: var(--color-white);
  backdrop-filter: blur(4px);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  padding: 11px 22px;
}

.header .header__cta .btn--primary:hover {
  background-color: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.85);
  box-shadow: 0 4px 20px rgba(0,0,0,0.18);
  transform: translateY(-1px);
}

/* Restore primary style when scrolled */
.header.is-scrolled .header__cta .btn--primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  backdrop-filter: none;
}

.header.is-scrolled .header__cta .btn--primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  box-shadow: 0 8px 28px rgba(62, 35, 23, 0.28);
}

/* ---- Hamburger ---- */
.header__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-small);
  cursor: pointer;
  padding: 6px;
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  background: transparent;
  transition: background-color var(--transition-fast),
              border-color var(--transition-fast);
}

.header__hamburger:hover {
  background-color: rgba(255, 255, 255, 0.12);
}

.hamburger__line {
  display: block;
  width: 20px;
  height: 1.5px;
  border-radius: 2px;
  transition: transform var(--transition-normal),
              opacity var(--transition-normal);
  transform-origin: center;
}

.header__hamburger.is-open .hamburger__line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.header__hamburger.is-open .hamburger__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.header__hamburger.is-open .hamburger__line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ---- Mobile nav overlay ---- */
.header__mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: linear-gradient(160deg, #2e211b 0%, #3d2116 100%);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.header__mobile-nav.is-open {
  display: flex;
  opacity: 1;
}

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin-bottom: 40px;
}

.mobile-nav__link {
  font-family: var(--font-title);
  font-size: 2.4rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.88);
  letter-spacing: 0.05em;
  padding: 10px 28px;
  transition: color var(--transition-fast);
}

.mobile-nav__link:hover,
.mobile-nav__link.is-active {
  color: var(--color-accent);
}

/* Mobile nav logo at top */
.mobile-nav__logo {
  position: absolute;
  top: 24px;
  left: 24px;
  width: 52px;
  height: 52px;
  opacity: 0.7;
  filter: brightness(0) invert(1);
}


.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* ---- Logo ---- */
.header__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  text-decoration: none;
}

.header__logo-img {
  width: 52px;
  height: 52px;
  object-fit: contain;
  flex-shrink: 0;
}

.header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.header__logo-name {
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: 0.04em;
}

.header__logo-sub {
  font-family: var(--font-body);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
}

/* ---- Navigation ---- */
.header__nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav__link {
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text);
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  transition: color var(--transition-fast),
              background-color var(--transition-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1.5px;
  background-color: var(--color-accent);
  transition: width var(--transition-normal);
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--color-primary);
}

.nav__link:hover::after,
.nav__link.is-active::after {
  width: calc(100% - 28px);
}

/* ---- CTA button ---- */
.header__cta {
  flex-shrink: 0;
}

/* ---- Hamburger ---- */
.header__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-small);
  cursor: pointer;
  padding: 6px;
  border: 1.5px solid var(--color-border);
  background: transparent;
  transition: background-color var(--transition-fast);
}

.header__hamburger:hover {
  background-color: rgba(111, 61, 37, 0.06);
}

.hamburger__line {
  display: block;
  width: 22px;
  height: 1.5px;
  background-color: var(--color-primary-dark);
  border-radius: 2px;
  transition: transform var(--transition-normal),
              opacity var(--transition-normal);
  transform-origin: center;
}

/* Hamburger open state */
.header__hamburger.is-open .hamburger__line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.header__hamburger.is-open .hamburger__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.header__hamburger.is-open .hamburger__line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ---- Mobile nav overlay ---- */
.header__mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(247, 238, 231, 0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 36px;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.header__mobile-nav.is-open {
  display: flex;
  opacity: 1;
}

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.mobile-nav__link {
  font-family: var(--font-title);
  font-size: 2rem;
  font-weight: 500;
  color: var(--color-primary-dark);
  letter-spacing: 0.04em;
  padding: 8px 24px;
  transition: color var(--transition-fast);
}

.mobile-nav__link:hover,
.mobile-nav__link.is-active {
  color: var(--color-accent);
}