/* ========================================
   HEADER & NAVIGATION
   ======================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: #FFFFFF;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
}

/* Logo */
.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header__logo img {
  height: 50px;
  width: auto;
  border-radius: var(--radius-sm);
}

.header__logo-text {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  line-height: 1.2;
}

.header__logo-text span {
  display: block;
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 400;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
}

/* Nav */
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav__link {
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  position: relative;
}

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

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
  border-radius: 1px;
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 60%;
}

.nav__cta {
  padding: 10px 24px;
  font-size: var(--fs-sm);
}

/* Hamburger */
.nav__toggle {
  display: none;
  width: 32px;
  height: 24px;
  position: relative;
  z-index: 1001;
  padding: 0;
}

.nav__toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  position: absolute;
  left: 0;
  transition: all 0.4s cubic-bezier(0.68, -0.6, 0.32, 1.6);
}

.nav__toggle span:nth-child(1) {
  top: 0;
}

.nav__toggle span:nth-child(2) {
  top: 50%;
  transform: translateY(-50%);
}

.nav__toggle span:nth-child(3) {
  bottom: 0;
}

.nav__toggle.active span {
  background: var(--color-white);
}

.nav__toggle.active span:nth-child(1) {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.nav__toggle.active span:nth-child(2) {
  opacity: 0;
  transform: translateX(20px);
}

.nav__toggle.active span:nth-child(3) {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

/* Mobile */
@media (max-width: 1024px) {
  .nav__toggle {
    display: block;
  }

  .nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--color-primary-dark);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--space-2xl);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.4s ease, visibility 0.4s ease;
    z-index: 1000;
  }

  .nav.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav__list {
    flex-direction: column;
    gap: var(--space-lg);
    align-items: center;
  }

  .nav__link {
    font-size: var(--fs-xl);
    color: rgba(255, 255, 255, 0.7);
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.3s ease;
  }

  .nav.open .nav__link {
    transform: translateY(0);
    opacity: 1;
  }

  .nav.open li:nth-child(1) .nav__link { transition-delay: 0.1s; }
  .nav.open li:nth-child(2) .nav__link { transition-delay: 0.15s; }
  .nav.open li:nth-child(3) .nav__link { transition-delay: 0.2s; }
  .nav.open li:nth-child(4) .nav__link { transition-delay: 0.25s; }
  .nav.open li:nth-child(5) .nav__link { transition-delay: 0.3s; }
  .nav.open li:nth-child(6) .nav__link { transition-delay: 0.35s; }
  .nav.open li:nth-child(7) .nav__link { transition-delay: 0.4s; }

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

  .nav__link::after {
    display: none;
  }

  .nav__cta {
    margin-top: var(--space-xl);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease 0.45s;
  }

  .nav.open .nav__cta {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 768px) {
  .header__inner {
    padding: var(--space-xs) var(--space-md);
  }

  .header__logo img {
    height: 34px;
  }

  .header__logo-text {
    font-size: 0.8rem;
  }

  .header__logo-text span {
    font-size: 0.6rem;
  }

  .nav__toggle {
    width: 24px;
    height: 18px;
  }
}

@media (max-width: 1024px) and (max-height: 630px) {
  .nav {
    justify-content: flex-start;
    padding-top: 80px;
    overflow-y: auto;
  }
}