/* ============================================
   DATA CREEK System — Header / Navigation
   ============================================ */

.header {
  background: var(--primary);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 70px;
  z-index: 1000;
  transition: var(--transition);
}

.header.scrolled {
  background: var(--dark);
  box-shadow: 0 2px 20px var(--shadow-lg);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

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

.logo-img {
  height: 50px;
  width: auto;
}

.logo-name {
  font-size: 24px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.5px;
  line-height: 1.2;
}

.logo-name .highlight {
  color: #4DD0E1;
}

.logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.5px;
}

.logo-text span {
  color: var(--accent);
}

/* Desktop Navigation */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-links a {
  color: var(--white);
  font-size: var(--font-size-sm);
  font-weight: 500;
  opacity: 0.85;
  padding: 8px 4px;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

.nav-links a:hover {
  opacity: 1;
  color: var(--white);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-links .btn {
  padding: 10px 24px;
  font-size: var(--font-size-sm);
  opacity: 1;
}

.nav-links .btn::after {
  display: none;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
  background: none;
  border: none;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--white);
  transition: var(--transition);
  border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}