/* ========================================
   PROFESSIONAL HEADER REDESIGN
   ======================================== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: #ffffff;
    transition: all 0.3s ease;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.06);
}

.main-header.scrolled {
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.1);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 3rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--color-primary);
    text-decoration: none;
}

.logo-icon {
    width: 70px;
    height: 70px;
    color: var(--color-primary);
}

.logo-text {
    letter-spacing: 0.5px;
}

.main-nav {
    display: flex;
    gap: 3rem;
    align-items: center;
}

.nav-link {
    color: #333;
    text-decoration: none;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: var(--color-primary);
}

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

.social-links {
    display: flex;
    gap: 0.75rem;
}

.social-icon {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.3s ease;
}

.social-icon:hover {
    background: var(--color-secondary);
    transform: translateY(-2px);
}